Added rotation and zoom splines to note columns, with the help of a couple new classes. Reorganized args to NoteDisplay functions into helper structures. Made splines have 3 modes controlling their behavior. Hold twisting is now handled by an AA rotation and hold drawing in general is now more complex.

Docs/Luadoc/Lua.xml

@@ -970,7 +970,7 @@
 		<Class base='ActorFrame' name='NoteField'>
 			<Function name='DidHoldNote'/>
 			<Function name='DidTapNote'/>
-			<Function name='GetColumnActors'/>
+			<Function name='get_column_actors'/>
 			<Function name='SetPressed'/>
 			<Function name='SetDidHoldNoteCallback'/>
 			<Function name='SetDidTapNoteCallback'/>

Docs/Luadoc/LuaDocumentation.xml

@@ -2959,7 +2959,7 @@ save yourself some time, copy this for undocumented things:
 		Makes the NoteField act as if a tap note was hit in the column, with the given score and bright setting. <br />
 		The callback for DidTapNote will not be called.
 	</Function>
-	<Function name='GetColumnActors' return='{actor}' arguments=''>
+	<Function name='get_column_actors' return='{actor}' arguments=''>
 		Returns a table of the actors for the columns.
 	</Function>
 	<Function name='SetDidHoldNoteCallback' return= '' arguments='function callback'>

src/ArrowEffects.h

@@ -19,6 +19,14 @@ public:
 		return GetYOffset( pPlayerState, iCol, fNoteBeat, fThrowAway, bThrowAway, bAbsolute );
 	}
 
+	static void GetXYZPos(const PlayerState* player_state, int col, float y_offset, float y_reverse_offset, vector<float>& ret, bool with_reverse= true)
+	{
+		ASSERT(ret.size() == 3);
+		ret[0]= GetXPos(player_state, col, y_offset);
+		ret[1]= GetYPos(player_state, col, y_offset, y_reverse_offset, with_reverse);
+		ret[2]= GetZPos(player_state, col, y_offset);
+	}
+
 	/**
 	 * @brief Retrieve the actual display position.
 	 *

src/CubicSpline.cpp

@@ -265,6 +265,11 @@ void CubicSpline::set_results(size_t last, vector<float>& diagonals, vector<floa
 		m_points[i].b= results[i];
 		m_points[i].c= (3 * diff) - (2 * results[i]) - results[next];
 		m_points[i].d= (2 * -diff) + results[i] + results[next];
+#define UNNAN(n) if(n != n) { n = 0.0f; }
+		UNNAN(m_points[i].b);
+		UNNAN(m_points[i].c);
+		UNNAN(m_points[i].d);
+#undef UNNAN
 	}
 	// Solving is now complete.
 }
@@ -275,17 +280,25 @@ float CubicSpline::evaluate(float t, bool loop) const
 	{
 		return 0.0f;
 	}
+	int flort= static_cast<int>(t);
 	if(loop)
 	{
-		float max_t= m_points.size() + 1.0f;
+		float max_t= m_points.size();
-		while(t > max_t) { t-= max_t; }
+		while(t >= max_t) { t-= max_t; }
 		while(t < 0.0f) { t+= max_t; }
+		flort= static_cast<int>(t);
 	}
-	int flort= static_cast<int>(t);
+	else
-	if(flort < 0)
+	{
+		if(flort <= 0)
 		{
 			return m_points[0].a;
 		}
+		else if(static_cast<size_t>(flort) >= m_points.size() - 1)
+		{
+			return m_points[m_points.size() - 1].a;
+		}
+	}
 	size_t p= min(static_cast<size_t>(flort), m_points.size()-1);
 	float tfrac= t - static_cast<float>(flort);
 	float tsq= tfrac * tfrac;
@@ -294,12 +307,56 @@ float CubicSpline::evaluate(float t, bool loop) const
 		(m_points[p].c * tsq) + (m_points[p].d * tcub);
 }
 
+float CubicSpline::evaluate_derivative(float t, bool loop) const
+{
+	if(m_points.empty())
+	{
+		return 0.0f;
+	}
+	int flort= static_cast<int>(t);
+	if(loop)
+	{
+		float max_t= m_points.size();
+		while(t >= max_t) { t-= max_t; }
+		while(t < 0.0f) { t+= max_t; }
+		flort= static_cast<int>(t);
+	}
+	else
+	{
+		if(static_cast<size_t>(flort) >= m_points.size() - 1)
+		{
+			return 0.0f;
+		}
+	}
+	size_t p= min(static_cast<size_t>(flort), m_points.size()-1);
+	float tfrac= t - static_cast<float>(flort);
+	float tsq= tfrac * tfrac;
+	return m_points[p].b + (2.0f * m_points[p].c * tfrac) +
+		(3.0f * m_points[p].d * tsq);
+}
+
 void CubicSpline::set_point(size_t i, float v)
 {
 	ASSERT_M(i < m_points.size(), "CubicSpline::set_point requires the index to be less than the number of points.");
 	m_points[i].a= v;
 }
 
+void CubicSpline::set_coefficients(size_t i, float b, float c, float d)
+{
+	ASSERT_M(i < m_points.size(), "CubicSpline: point index must be less than the number of points.");
+	m_points[i].b= b;
+	m_points[i].c= c;
+	m_points[i].d= d;
+}
+
+void CubicSpline::get_coefficients(size_t i, float& b, float& c, float& d)
+{
+	ASSERT_M(i < m_points.size(), "CubicSpline: point index must be less than the number of points.");
+	b= m_points[i].b;
+	c= m_points[i].c;
+	d= m_points[i].d;
+}
+
 void CubicSpline::resize(size_t s)
 {
 	m_points.resize(s);
@@ -346,6 +403,15 @@ void CubicSplineN::evaluate(float t, vector<float>& v) const
 	}
 }
 
+void CubicSplineN::evaluate_derivative(float t, vector<float>& v) const
+{
+	for(spline_cont_t::const_iterator spline= m_splines.begin();
+			spline != m_splines.end(); ++spline)
+	{
+		v.push_back(spline->evaluate_derivative(t, loop));
+	}
+}
+
 void CubicSplineN::set_point(size_t i, vector<float> const& v)
 {
 	ASSERT_M(v.size() == m_splines.size(), "CubicSplineN::set_point requires the passed point to be the same dimension as the spline.");
@@ -356,6 +422,30 @@ void CubicSplineN::set_point(size_t i, vector<float> const& v)
 	m_dirty= true;
 }
 
+void CubicSplineN::set_coefficients(size_t i, vector<float> const& b,
+	vector<float> const& c, vector<float> const& d)
+{
+	ASSERT_M(b.size() == c.size() && c.size() == d.size() &&
+		d.size() == m_splines.size(), "CubicSplineN: coefficient vectors must be "
+		"the same dimension as the spline.");
+	for(size_t n= 0; n < m_splines.size(); ++n)
+	{
+		m_splines[n].set_coefficients(i, b[n], c[n], d[n]);
+	}
+}
+
+void CubicSplineN::get_coefficients(size_t i, vector<float>& b,
+	vector<float>& c, vector<float>& d)
+{
+	ASSERT_M(b.size() == c.size() && c.size() == d.size() &&
+		d.size() == m_splines.size(), "CubicSplineN: coefficient vectors must be "
+		"the same dimension as the spline.");
+	for(size_t n= 0; n < m_splines.size(); ++n)
+	{
+		m_splines[n].get_coefficients(i, b[n], c[n], d[n]);
+	}
+}
+
 void CubicSplineN::resize(size_t s)
 {
 	for(spline_cont_t::iterator spline= m_splines.begin();
@@ -412,31 +502,47 @@ struct LunaCubicSplineN : Luna<CubicSplineN>
 		}
 		return 1;
 	}
+	static int evaluate_derivative(T* p, lua_State* L)
+	{
+		vector<float> pos;
+		p->evaluate_derivative(FArg(1), pos);
+		lua_createtable(L, pos.size(), 0);
+		for(size_t i= 0; i < pos.size(); ++i)
+		{
+			lua_pushnumber(L, pos[i]);
+			lua_rawseti(L, -2, i+1);
+		}
+		return 1;
+	}
+	static void get_element_table_from_stack(T* p, lua_State* L, int s,
+		size_t limit, vector<float>& ret)
+	{
+		size_t elements= lua_objlen(L, s);
+		// Too many elements is not an error because allowing it allows the user
+		// to reuse the same position data set after changing the dimension size.
+		// The same is true for too few elements.
+		for(size_t e= 0; e < elements; ++e)
+		{
+			lua_rawgeti(L, s, e+1);
+			ret.push_back(FArg(-1));
+		}
+		while(ret.size() < limit)
+		{
+			ret.push_back(0.0f);
+		}
+	}
 	static void set_point_from_stack(T* p, lua_State* L, size_t i, int s)
 	{
 		if(!lua_istable(L, s))
 		{
 			luaL_error(L, "Spline point must be a table.");
 		}
-		size_t elements= lua_objlen(L, s);
-		// Too many elements is not an error because allowing it allows the user
-		// to reuse the same position data set after changing the dimension size.
-		// The same is true for too few elements.
 		vector<float> pos;
-		for(size_t e= 0; e < elements; ++e)
+		get_element_table_from_stack(p, L, s, p->dimension(), pos);
-		{
-			lua_rawgeti(L, s, e+1);
-			pos.push_back(FArg(-1));
-		}
-		while(pos.size() < p->dimension())
-		{
-			pos.push_back(0.0f);
-		}
 		p->set_point(i, pos);
 	}
 	static int set_point(T* p, lua_State* L)
 	{
-		vector<float> pos;
 		int i= IArg(1)-1;
 		if(i < 0)
 		{
@@ -449,6 +555,62 @@ struct LunaCubicSplineN : Luna<CubicSplineN>
 		set_point_from_stack(p, L, static_cast<size_t>(i), 2);
 		COMMON_RETURN_SELF;
 	}
+	static void set_coefficients_from_stack(T* p, lua_State* L, size_t i, int s)
+	{
+		if(!lua_istable(L, s) || !lua_istable(L, s+1) || !lua_istable(L, s+2))
+		{
+			luaL_error(L, "Spline coefficient args must be three tables.");
+		}
+		size_t limit= p->dimension();
+		vector<float> b; get_element_table_from_stack(p, L, s, limit, b);
+		vector<float> c; get_element_table_from_stack(p, L, s+1, limit, c);
+		vector<float> d; get_element_table_from_stack(p, L, s+2, limit, d);
+		p->set_coefficients(i, b, c, d);
+	}
+	static int set_coefficients(T* p, lua_State* L)
+	{
+		int i= IArg(1)-1;
+		if(i < 0)
+		{
+			luaL_error(L, "Cannot set spline coefficients at index less than 1.");
+		}
+		if(static_cast<size_t>(i) >= p->size())
+		{
+			luaL_error(L, "Cannot set spline coefficients at index greater than size.");
+		}
+		set_coefficients_from_stack(p, L, i, 2);
+		COMMON_RETURN_SELF;
+	}
+	static int get_coefficients(T* p, lua_State* L)
+	{
+		int i= IArg(1)-1;
+		if(i < 0)
+		{
+			luaL_error(L, "Cannot get spline coefficients at index less than 1.");
+		}
+		if(static_cast<size_t>(i) >= p->size())
+		{
+			luaL_error(L, "Cannot get spline coefficients at index greater than size.");
+		}
+		size_t limit= p->dimension();
+		vector<vector<float> > coeff(3);
+		coeff[0].resize(limit);
+		coeff[1].resize(limit);
+		coeff[2].resize(limit);
+		p->get_coefficients(i, coeff[0], coeff[1], coeff[2]);
+		lua_createtable(L, 3, 0);
+		for(size_t co= 0; co < coeff.size(); ++co)
+		{
+			lua_createtable(L, limit, 0);
+			for(size_t v= 0; v < limit; ++v)
+			{
+				lua_pushnumber(L, coeff[co][v]);
+				lua_rawseti(L, -2, v+1);
+			}
+			lua_rawseti(L, -2, co+1);
+		}
+		return 1;
+	}
 	static int resize(T* p, lua_State* L)
 	{
 		int siz= IArg(1);
@@ -503,7 +665,10 @@ struct LunaCubicSplineN : Luna<CubicSplineN>
 	{
 		ADD_METHOD(solve);
 		ADD_METHOD(evaluate);
+		ADD_METHOD(evaluate_derivative);
 		ADD_METHOD(set_point);
+		ADD_METHOD(set_coefficients);
+		ADD_METHOD(get_coefficients);
 		ADD_METHOD(resize);
 		ADD_METHOD(size);
 		ADD_METHOD(redimension);

src/CubicSpline.h

@@ -10,7 +10,10 @@ struct CubicSpline
 	void solve_looped();
 	void solve_straight();
 	float evaluate(float t, bool loop) const;
+	float evaluate_derivative(float t, bool loop) const;
 	void set_point(size_t i, float v);
+	void set_coefficients(size_t i, float b, float c, float d);
+	void get_coefficients(size_t i, float& b, float& c, float& d);
 	void resize(size_t s);
 	size_t size() const;
 	bool empty() const;
@@ -33,7 +36,12 @@ struct CubicSplineN
 	{}
 	void solve();
 	void evaluate(float t, vector<float>& v) const;
+	void evaluate_derivative(float t, vector<float>& v) const;
 	void set_point(size_t i, vector<float> const& v);
+	void set_coefficients(size_t i, vector<float> const& b,
+		vector<float> const& c, vector<float> const& d);
+	void get_coefficients(size_t i, vector<float>& b,
+		vector<float>& c, vector<float>& d);
 	void resize(size_t s);
 	size_t size() const;
 	void redimension(size_t d);

src/GhostArrowRow.cpp

@@ -56,23 +56,8 @@ void GhostArrowRow::Update( float fDeltaTime )
 {
 	for( unsigned c=0; c<m_Ghost.size(); c++ )
 	{
-		vector<float> spline_pos;
-		(*m_renderers)[c].m_spline.evaluate((*m_renderers)[c].m_receptor_t, spline_pos);
 		m_Ghost[c]->Update( fDeltaTime );
-
+		(*m_renderers)[c].UpdateReceptorGhostStuff(m_Ghost[c]);
-		float fX = ArrowEffects::GetXPos( m_pPlayerState, c, 0 );
-		float fY = ArrowEffects::GetYPos( m_pPlayerState, c, 0, m_fYReverseOffsetPixels );
-		float fZ = ArrowEffects::GetZPos( m_pPlayerState, c, 0 );
-
-		m_Ghost[c]->SetX( fX + spline_pos[0] );
-		m_Ghost[c]->SetY( fY + spline_pos[1] );
-		m_Ghost[c]->SetZ( fZ + spline_pos[2] );
-
-		const float fRotation = ArrowEffects::ReceptorGetRotationZ( m_pPlayerState );
-		m_Ghost[c]->SetRotationZ( fRotation );
-
-		const float fZoom = ArrowEffects::GetZoom( m_pPlayerState );
-		m_Ghost[c]->SetZoom( fZoom );
 	}
 
 	for( unsigned i = 0; i < m_bHoldShowing.size(); ++i )

src/NoteDisplay.cpp

@@ -17,6 +17,9 @@
 #include "Foreach.h"
 #include "RageMath.h"
 
+static const double PI_180= PI / 180.0;
+static const double PI_180R= 180.0 / PI;
+
 const RString& NoteNotePartToString( NotePart i );
 /** @brief A foreach loop going through the different NoteParts. */
 #define FOREACH_NotePart( i ) FOREACH_ENUM( NotePart, i )
@@ -43,6 +46,15 @@ XToString( NoteColorType );
 StringToX( NoteColorType );
 LuaXType( NoteColorType );
 
+static const char* NoteColumnSplineModeNames[] = {
+	"Disabled",
+	"Offset",
+	"Position",
+};
+XToString(NoteColumnSplineMode);
+StringToX(NoteColumnSplineMode);
+LuaXType(NoteColumnSplineMode);
+
 static bool IsVectorZero( const RageVector2 &v )
 {
 	return v.x == 0  &&  v.y == 0;
@@ -277,6 +289,101 @@ XToString( ActiveType );
 
 
 
+float NCSplineHandler::BeatToTValue(float song_beat, float note_beat) const
+{
+	float relative_beat= note_beat;
+	// This allows someone to do something really fancy like having a spline
+	// that extends the length of the song.  Think of arrows tracing a path
+	// as the song progresses. -Kyz
+	if(m_subtract_song_beat_from_curr)
+	{
+		relative_beat-= song_beat;
+		return (relative_beat / m_beats_per_t) - m_receptor_t;
+	}
+	return relative_beat / m_beats_per_t;
+}
+
+void NCSplineHandler::EvalForBeat(float song_beat, float note_beat, vector<float>& ret) const
+{
+	float t_value= BeatToTValue(song_beat, note_beat);
+	m_spline.evaluate(t_value, ret);
+}
+
+void NCSplineHandler::EvalDerivForBeat(float song_beat, float note_beat, vector<float>& ret) const
+{
+	float t_value= BeatToTValue(song_beat, note_beat);
+	m_spline.evaluate_derivative(t_value, ret);
+}
+
+void NCSplineHandler::EvalForReceptor(float song_beat, vector<float>& ret) const
+{
+	float t_value= m_receptor_t;
+	if(!m_subtract_song_beat_from_curr)
+	{
+		t_value= song_beat / m_beats_per_t;
+	}
+	m_spline.evaluate(t_value, ret);
+}
+
+void NoteColumnRenderArgs::spae_pos_for_beat(PlayerState const* state,
+	float beat, float y_offset, float y_reverse_offset,
+	vector<float>& sp_pos, vector<float>& ae_pos) const
+{
+	switch(pos_handler->m_spline_mode)
+	{
+		case NCSM_Disabled:
+			ArrowEffects::GetXYZPos(state, column, y_offset, y_reverse_offset, ae_pos);
+			sp_pos.resize(3);
+			// Sure, resize is supposed to call the default constructor, and for
+			// numbers the default constructor is supposed to set it to zero, but
+			// I got bit for relying on that once. -Kyz
+			sp_pos[0]= sp_pos[1]= sp_pos[2]= 0.0f;
+			break;
+		case NCSM_Offset:
+			ArrowEffects::GetXYZPos(state, column, y_offset, y_reverse_offset, ae_pos);
+			pos_handler->EvalForBeat(song_beat, beat, sp_pos);
+			break;
+		case NCSM_Position:
+			pos_handler->EvalForBeat(song_beat, beat, sp_pos);
+			break;
+	}
+}
+void NoteColumnRenderArgs::spae_zoom_for_beat(PlayerState const* state, float beat,
+	vector<float>& sp_zoom, vector<float>& ae_zoom) const
+{
+	switch(zoom_handler->m_spline_mode)
+	{
+		case NCSM_Disabled:
+			ae_zoom[0]= ae_zoom[1]= ae_zoom[2]= ArrowEffects::GetZoom(state);
+			sp_zoom.resize(3);
+			sp_zoom[0]= sp_zoom[1]= sp_zoom[2]= 0.0f;
+			break;
+		case NCSM_Offset:
+			ae_zoom[0]= ae_zoom[1]= ae_zoom[2]= ArrowEffects::GetZoom(state);
+			zoom_handler->EvalForBeat(song_beat, beat, sp_zoom);
+			break;
+		case NCSM_Position:
+			zoom_handler->EvalForBeat(song_beat, beat, sp_zoom);
+			break;
+	}
+}
+void NoteColumnRenderArgs::SetPRZForActor(Actor* actor,
+	vector<float> const& sp_pos, vector<float> const& ae_pos,
+	vector<float> const& sp_rot, vector<float> const& ae_rot,
+	vector<float> const& sp_zoom, vector<float> const& ae_zoom) const
+{
+	actor->SetX(sp_pos[0] + ae_pos[0]);
+	actor->SetY(sp_pos[1] + ae_pos[1]);
+	actor->SetZ(sp_pos[2] + ae_pos[2]);
+	actor->SetRotationX(sp_rot[0] * PI_180R + ae_rot[0]);
+	actor->SetRotationY(sp_rot[1] * PI_180R + ae_rot[1]);
+	actor->SetRotationZ(sp_rot[2] * PI_180R + ae_rot[2]);
+	actor->SetZoomX(sp_zoom[0] + ae_zoom[0]);
+	actor->SetZoomY(sp_zoom[1] + ae_zoom[1]);
+	actor->SetZoomZ(sp_zoom[2] + ae_zoom[2]);
+}
+
+
 NoteDisplay::NoteDisplay()
 {
 	cache = new NoteMetricCache_t;
@@ -342,15 +449,9 @@ bool NoteDisplay::IsOnScreen( float fBeat, int iCol, int iDrawDistanceAfterTarge
 	return true;
 }
 
-float NoteDisplay::BeatToTValue(CommonColumnRenderArgs const& args, float beat) const
+bool NoteDisplay::DrawHoldsInRange(NoteFieldRenderArgs const& field_args,
-{
+	NoteColumnRenderArgs const& column_args,
-	float song_beat= m_pPlayerState->GetDisplayedPosition().m_fSongBeatVisible;
+	vector<NoteData::TrackMap::const_iterator> const& tap_set)
-	float relative_beat= beat - song_beat;
-	return (relative_beat / args.beats_per_t) - args.receptor_t;
-}
-
-bool NoteDisplay::DrawHoldsInRange(CommonColumnRenderArgs const& args,
-	int column, vector<NoteData::TrackMap::const_iterator> const& tap_set)
 {
 	bool any_upcoming = false;
 	for(vector<NoteData::TrackMap::const_iterator>::const_iterator tapit=
@@ -367,18 +468,18 @@ bool NoteDisplay::DrawHoldsInRange(CommonColumnRenderArgs const& args,
 		float throw_away;
 		bool start_past_peak = false;
 		bool end_past_peak = false;
-		float start_y	= ArrowEffects::GetYOffset(m_pPlayerState, column,
+		float start_y	= ArrowEffects::GetYOffset(m_pPlayerState, column_args.column,
 			NoteRowToVisibleBeat(m_pPlayerState, start_row), throw_away,
 			start_past_peak);
-		float end_y	= ArrowEffects::GetYOffset(m_pPlayerState, column,
+		float end_y	= ArrowEffects::GetYOffset(m_pPlayerState, column_args.column,
 			NoteRowToVisibleBeat(m_pPlayerState, end_row), throw_away,
 			end_past_peak);
-		bool tail_visible = args.draw_pixels_after_targets <= end_y &&
+		bool tail_visible = field_args.draw_pixels_after_targets <= end_y &&
-			end_y <= args.draw_pixels_before_targets;
+			end_y <= field_args.draw_pixels_before_targets;
-		bool head_visible = args.draw_pixels_after_targets <= start_y  &&
+		bool head_visible = field_args.draw_pixels_after_targets <= start_y  &&
-			start_y <= args.draw_pixels_before_targets;
+			start_y <= field_args.draw_pixels_before_targets;
-		bool straddling_visible = start_y <= args.draw_pixels_after_targets &&
+		bool straddling_visible = start_y <= field_args.draw_pixels_after_targets &&
-			args.draw_pixels_before_targets <= end_y;
+			field_args.draw_pixels_before_targets <= end_y;
 		bool straddling_peak = start_past_peak && !end_past_peak;
 		if(!(tail_visible || head_visible || straddling_visible || straddling_peak))
 		{
@@ -393,21 +494,21 @@ bool NoteDisplay::DrawHoldsInRange(CommonColumnRenderArgs const& args,
 		const bool is_holding = tn.HoldResult.bHeld;
 		if(hold_ghost_showing)
 		{
-			args.ghost_row->SetHoldShowing(column, tn);
+			field_args.ghost_row->SetHoldShowing(column_args.column, tn);
 		}
 
-		ASSERT_M(NoteRowToBeat(start_row) > -2000, ssprintf("%i %i %i", start_row, end_row, column));
+		ASSERT_M(NoteRowToBeat(start_row) > -2000, ssprintf("%i %i %i", start_row, end_row, column_args.column));
 
 		bool in_selection_range = false;
-		if(*args.selection_begin_marker != -1 && *args.selection_end_marker != -1)
+		if(*field_args.selection_begin_marker != -1 && *field_args.selection_end_marker != -1)
 		{
-			in_selection_range = (*args.selection_begin_marker <= start_row &&
+			in_selection_range = (*field_args.selection_begin_marker <= start_row &&
-				end_row < *args.selection_end_marker);
+				end_row < *field_args.selection_end_marker);
 		}
 
-		DrawHold(tn, args, column, start_row, is_holding, result,
+		DrawHold(tn, field_args, column_args, start_row, is_holding, result,
 			use_addition_coloring,
-			in_selection_range ? args.selection_glow : args.fail_fade);
+			in_selection_range ? field_args.selection_glow : field_args.fail_fade);
 
 		bool note_upcoming = NoteRowToBeat(start_row) >
 			m_pPlayerState->GetDisplayedPosition().m_fSongBeat;
@@ -416,8 +517,9 @@ bool NoteDisplay::DrawHoldsInRange(CommonColumnRenderArgs const& args,
 	return any_upcoming;
 }
 
-bool NoteDisplay::DrawTapsInRange(CommonColumnRenderArgs const& args,
+bool NoteDisplay::DrawTapsInRange(NoteFieldRenderArgs const& field_args,
-	int column, vector<NoteData::TrackMap::const_iterator> const& tap_set)
+	NoteColumnRenderArgs const& column_args,
+	vector<NoteData::TrackMap::const_iterator> const& tap_set)
 {
 	bool any_upcoming= false;
 	// draw notes from furthest to closest
@@ -430,8 +532,8 @@ bool NoteDisplay::DrawTapsInRange(CommonColumnRenderArgs const& args,
 		// TRICKY: If boomerang is on, then all notes in the range
 		// [first_row,last_row] aren't necessarily visible.
 		// Test every note to make sure it's on screen before drawing.
-		if(!IsOnScreen(NoteRowToBeat(tap_row), column,
+		if(!IsOnScreen(NoteRowToBeat(tap_row), column_args.column,
-				args.draw_pixels_after_targets, args.draw_pixels_before_targets))
+				field_args.draw_pixels_after_targets, field_args.draw_pixels_before_targets))
 		{
 			continue; // skip
 		}
@@ -451,9 +553,9 @@ bool NoteDisplay::DrawTapsInRange(CommonColumnRenderArgs const& args,
 		bool hold_begins_on_this_beat = false;
 		if(DrawHoldHeadForTapsOnSameRow())
 		{
-			for(int c2= 0; c2 < args.note_data->GetNumTracks(); ++c2)
+			for(int c2= 0; c2 < field_args.note_data->GetNumTracks(); ++c2)
 			{
-				const TapNote &tmp = args.note_data->GetTapNote(c2, tap_row);
+				const TapNote &tmp = field_args.note_data->GetTapNote(c2, tap_row);
 				if(tmp.type == TapNoteType_HoldHead &&
 					tmp.subType == TapNoteSubType_Hold)
 				{
@@ -467,9 +569,9 @@ bool NoteDisplay::DrawTapsInRange(CommonColumnRenderArgs const& args,
 		bool roll_begins_on_this_beat = false;
 		if(DrawRollHeadForTapsOnSameRow())
 		{
-			for(int c2= 0; c2 < args.note_data->GetNumTracks(); ++c2)
+			for(int c2= 0; c2 < field_args.note_data->GetNumTracks(); ++c2)
 			{
-				const TapNote &tmp = args.note_data->GetTapNote(c2, tap_row);
+				const TapNote &tmp = field_args.note_data->GetTapNote(c2, tap_row);
 				if(tmp.type == TapNoteType_HoldHead &&
 					tmp.subType == TapNoteSubType_Roll)
 				{
@@ -480,19 +582,20 @@ bool NoteDisplay::DrawTapsInRange(CommonColumnRenderArgs const& args,
 		}
 
 		bool in_selection_range = false;
-		if(*args.selection_begin_marker != -1 && *args.selection_end_marker != -1)
+		if(*field_args.selection_begin_marker != -1 && *field_args.selection_end_marker != -1)
 		{
-			in_selection_range = *args.selection_begin_marker <= tap_row &&
+			in_selection_range = *field_args.selection_begin_marker <= tap_row &&
-				tap_row < *args.selection_end_marker;
+				tap_row < *field_args.selection_end_marker;
 		}
 
 		bool is_addition = (tn.source == TapNoteSource_Addition);
 		bool hopo_possible = (tn.bHopoPossible);
 		bool use_addition_coloring = is_addition || hopo_possible;
-		DrawTap(tn, args, column, NoteRowToVisibleBeat(m_pPlayerState, tap_row),
+		DrawTap(tn, field_args, column_args,
+			NoteRowToVisibleBeat(m_pPlayerState, tap_row),
 			hold_begins_on_this_beat, roll_begins_on_this_beat,
 			use_addition_coloring,
-			in_selection_range ? args.selection_glow : args.fail_fade);
+			in_selection_range ? field_args.selection_glow : field_args.fail_fade);
 
 		any_upcoming |= NoteRowToBeat(tap_row) >
 			m_pPlayerState->GetDisplayedPosition().m_fSongBeat;
@@ -614,28 +717,24 @@ struct StripBuffer
 };
 
 void NoteDisplay::DrawHoldPart(vector<Sprite*> &vpSpr,
-	CommonColumnRenderArgs const& args, int iCol, int fYStep,
+	NoteFieldRenderArgs const& field_args,
+	NoteColumnRenderArgs const& column_args, int fYStep,
 	float fPercentFadeToFail, float fColorScale, bool bGlow,
 	float fOverlappedTime, float fYTop, float fYBottom, float fYStartPos,
 	float fYEndPos, bool bWrapping, bool bAnchorToTop,
-	bool bFlipTextureVertically, float top_t, float bottom_t)
+	bool bFlipTextureVertically, float top_beat, float bottom_beat)
 {
 	ASSERT( !vpSpr.empty() );
 
+	float ae_zoom= ArrowEffects::GetZoom(m_pPlayerState);
 	Sprite *pSprite = vpSpr.front();
-	FOREACH( Sprite *, vpSpr, s )
-	{
-		(*s)->SetZoom( ArrowEffects::GetZoom(m_pPlayerState) );
-		ASSERT( (*s)->GetUnzoomedWidth() == pSprite->GetUnzoomedWidth() );
-		ASSERT( (*s)->GetUnzoomedHeight() == pSprite->GetUnzoomedHeight() );
-	}
 
 	// draw manually in small segments
 	RectF rect = *pSprite->GetCurrentTextureCoordRect();
 	if( bFlipTextureVertically )
 		swap( rect.top, rect.bottom );
-	const float fFrameWidth		= pSprite->GetZoomedWidth();
+	const float fFrameWidth		= pSprite->GetUnzoomedWidth();
-	const float fFrameHeight	= pSprite->GetZoomedHeight();
+	const float fFrameHeight	= pSprite->GetUnzoomedHeight() * ae_zoom;
 
 	/* Only draw the section that's within the range specified.  If a hold note is
 	 * very long, don't process or draw the part outside of the range.  Don't change
@@ -674,6 +773,10 @@ void NoteDisplay::DrawHoldPart(vector<Sprite*> &vpSpr,
 	const float fTexCoordRight	= rect.right;
 	const float fTexCoordCenter	= (fTexCoordLeft+fTexCoordRight)/2;
 
+	// pos_z_vec will be used later to orient the hold.  Read below. -Kyz
+	static RageVector3 const pos_z_vec(0.0f, 0.0f, 1.0f);
+	static RageVector3 const pos_y_vec(0.0f, 1.0f, 0.0f);
+
 	StripBuffer queue;
 	for( float fY = fYStartPos; !bLast; fY += fYStep )
 	{
@@ -683,50 +786,165 @@ void NoteDisplay::DrawHoldPart(vector<Sprite*> &vpSpr,
 			bLast = true;
 		}
 
-		float curtsy= top_t;
+		const float fYOffset		= ArrowEffects::GetYOffsetFromYPos( m_pPlayerState, column_args.column, fY, m_fYReverseOffsetPixels );
-		if(top_t != bottom_t)
+
+		float cur_beat= top_beat;
+		if(top_beat != bottom_beat)
 		{
-			curtsy= SCALE(fY, fYTop, fYBottom, top_t, bottom_t);
+			cur_beat= SCALE(fY, fYTop, fYBottom, top_beat, bottom_beat);
+		}
+
+		// Fun times ahead with vector math.  If the notes are being moved by the
+		// position spline, the vectors used to position the edges of the strip
+		// need to be adjusted or the hold will vanish when the notes move
+		// horizontally.
+		// To accomplish this, we use the derivative at the current point from
+		// AE and the position spline.  That gives us the forward vector for the
+		// strip, pointing to where the next center vert will be. (step 1)
+		// The vectors pointing left and right to the edges of the strip are
+		// obtained from the cross product of the forward vector and pos_z_vec.
+		// (unless the forward vec is too close to pos_z_vec or -pos_z_vec, in
+		// which case pos_y_vec is used)  The result of a cross product is a
+		// vector perpendicular to both, so forward crossed with pos_z_vec gives
+		// us the left vector.  Right is of course -left. (step 2)
+		// After that step, the left and right vectors need to be rotated around
+		// the forward vector axis by the y rotation value, to allow the hold to
+		// twist. (step 3)
+		// Steps will be labeled where they occur below. -Kyz
+		// TODO:  Figure out whether it's worth the time investment to figure out
+		// a way to skip the complex vector handling if the spline is disabled.
+
+		vector<float> sp_pos;
+		vector<float> sp_pos_forward;
+		vector<float> sp_rot;
+		vector<float> sp_zoom;
+		vector<float> ae_pos(3, 0.0f);
+		vector<float> ae_rot(3, 0.0f);
+
+		// (step 1 of vector handling, part 1)
+		// ArrowEffects only contributes to the Y component of the vector to
+		// maintain the old behavior of how holds are drawn when they wave back
+		// and forth. -Kyz
+		RageVector3 render_forward(0.0f, 1.0f, 0.0f);
+		column_args.spae_pos_for_beat(m_pPlayerState, cur_beat,
+			fYOffset, m_fYReverseOffsetPixels, sp_pos, ae_pos);
+		// fX and fZ are sp_pos[0] + ae_pos[0] and sp_pos[2] + ae_pos[2]. -Kyz
+		// fY is the actual y position that should be used, not whatever spae
+		// fetched from ArrowEffects. -Kyz
+		switch(column_args.pos_handler->m_spline_mode)
+		{
+			case NCSM_Disabled:
+				ae_pos[1]= fY;
+				sp_pos_forward.resize(3);
+				sp_pos_forward[0]= sp_pos_forward[1]= sp_pos_forward[2]= 0.0f;
+				break;
+			case NCSM_Offset:
+				ae_pos[1]= fY;
+				column_args.pos_handler->EvalDerivForBeat(column_args.song_beat, cur_beat, sp_pos_forward);
+				VectorFloatNormalize(sp_pos_forward);
+				break;
+			case NCSM_Position:
+				ae_pos[1]= 0.0f;
+				render_forward.y= 0.0f;
+				column_args.pos_handler->EvalDerivForBeat(column_args.song_beat, cur_beat, sp_pos_forward);
+				VectorFloatNormalize(sp_pos_forward);
+				break;
+		}
+
+		render_forward.x+= sp_pos_forward[0];
+		render_forward.y+= sp_pos_forward[1];
+		render_forward.z+= sp_pos_forward[2];
+		// Normalize the vector so it'll be easy to test when determining whether
+		// to use pos_z_vec or pos_y_vec for the cross product in step 2.
+		RageVec3Normalize(&render_forward, &render_forward);
+
+		// Holds are only affected by the x axis of the zoom spline because they
+		// are flat sprites. -Kyz
+		float render_width= fFrameWidth;
+		switch(column_args.zoom_handler->m_spline_mode)
+		{
+			case NCSM_Disabled:
+				render_width= fFrameWidth * ae_zoom;
+				break;
+			case NCSM_Offset:
+				column_args.zoom_handler->EvalForBeat(column_args.song_beat, cur_beat, sp_zoom);
+				render_width= fFrameWidth * (ae_zoom + sp_zoom[0]);
+				break;
+			case NCSM_Position:
+				column_args.zoom_handler->EvalForBeat(column_args.song_beat, cur_beat, sp_zoom);
+				render_width= fFrameWidth * sp_zoom[0];
+				break;
 		}
-		vector<float> spline_pos;
-		args.spline->evaluate(curtsy, spline_pos);
 
-		const float fYOffset		= ArrowEffects::GetYOffsetFromYPos( m_pPlayerState, iCol, fY, m_fYReverseOffsetPixels );
-		const float fZ			= ArrowEffects::GetZPos( m_pPlayerState, iCol, fYOffset ) + spline_pos[2];
 		const float fFrameWidthScale	= ArrowEffects::GetFrameWidthScale( m_pPlayerState, fYOffset, fOverlappedTime );
-		const float fScaledFrameWidth	= fFrameWidth * fFrameWidthScale;
+		const float fScaledFrameWidth	= render_width * fFrameWidthScale;
 
-		float fX			= ArrowEffects::GetXPos( m_pPlayerState, iCol, fYOffset ) + spline_pos[0];
+		// Can't use the same code as for taps because hold bodies can only rotate
+		// around the y axis. -Kyz
+		switch(column_args.rot_handler->m_spline_mode)
+		{
+			case NCSM_Disabled:
+				// XXX: Actor rotations use degrees, Math uses radians. Convert here.
+				ae_rot[1]= ArrowEffects::GetRotationY(m_pPlayerState, fYOffset) * PI_180;
+				sp_rot.resize(3);
+				sp_rot[0]= sp_rot[1]= sp_rot[2]= 0.0f;
+				break;
+			case NCSM_Offset:
+				ae_rot[1]= ArrowEffects::GetRotationY(m_pPlayerState, fYOffset) * PI_180;
+				column_args.rot_handler->EvalForBeat(column_args.song_beat, cur_beat, sp_rot);
+				break;
+			case NCSM_Position:
+				column_args.rot_handler->EvalForBeat(column_args.song_beat, cur_beat, sp_rot);
+				break;
+		}
 
-		// XXX: Actor rotations use degrees, RageFastCos/Sin use radians. Convert here.
+		RageVector3 center_vert(sp_pos[0] + ae_pos[0],
-		const float fRotationY		= ArrowEffects::GetRotationY( m_pPlayerState, fYOffset ) * PI/180;
+			sp_pos[1] + ae_pos[1], sp_pos[2] + ae_pos[2]);
 
-		// if we're rotating, we need to modify the X and Z coords for the outer edges.
+		// Special case for hold caps, which have the same top and bottom beat.
-		const float fRotOffsetX		= (fScaledFrameWidth/2) * RageFastCos(fRotationY);
+		if(top_beat == bottom_beat && fY != fYStartPos)
-		const float fRotOffsetZ		= (fScaledFrameWidth/2) * RageFastSin(fRotationY);
+		{
+			center_vert.x+= render_forward.x;
+			center_vert.y+= render_forward.y;
+			center_vert.z+= render_forward.z;
+		}
 
-		//const float fXLeft			= fX - (fScaledFrameWidth/2);
+		const float render_roty= (sp_rot[1] + ae_rot[1]);
-		const float fXLeft			= fX - fRotOffsetX;
+
-		const float fXCenter		= fX;
+		// (step 2 of vector handling)
-		//const float fXRight		= fX + (fScaledFrameWidth/2);
+		RageVector3 render_left;
-		const float fXRight		= fX + fRotOffsetX;
+		if(abs(render_forward.z) > 0.9f) // 0.9 arbitrariliy picked.
-		const float fZLeft			= fZ - fRotOffsetZ;
+		{
-		const float fZCenter	= fZ;
+			RageVec3Cross(&render_left, &render_forward, &pos_y_vec);
-		const float fZRight		= fZ + fRotOffsetZ;
+		}
+		else
+		{
+			RageVec3Cross(&render_left, &render_forward, &pos_z_vec);
+		}
+		RageAARotate(&render_left, &render_forward, render_roty);
+		const float half_width= fScaledFrameWidth * .5f;
+		render_left.x*= half_width;
+		render_left.y*= half_width;
+		render_left.z*= half_width;
+
+		RageVector3 const left_vert(center_vert.x + render_left.x,
+			center_vert.y + render_left.y, center_vert.z + render_left.z);
+		RageVector3 const right_vert(center_vert.x - render_left.x,
+			center_vert.y - render_left.y, center_vert.z - render_left.z);
 
 		const float fDistFromTop	= fY - fYTop;
 		float fTexCoordTop		= SCALE( fDistFromTop, 0, fFrameHeight, rect.top, rect.bottom );
 		fTexCoordTop += fAddToTexCoord;
 
-		const float fAlpha		= ArrowGetAlphaOrGlow( bGlow, m_pPlayerState, iCol, fYOffset, fPercentFadeToFail, m_fYReverseOffsetPixels, args.draw_pixels_before_targets, args.fade_before_targets );
+		const float fAlpha		= ArrowGetAlphaOrGlow( bGlow, m_pPlayerState, column_args.column, fYOffset, fPercentFadeToFail, m_fYReverseOffsetPixels, field_args.draw_pixels_before_targets, field_args.fade_before_targets );
 		const RageColor color		= RageColor(fColorScale,fColorScale,fColorScale,fAlpha);
 
 		if( fAlpha > 0 )
 			bAllAreTransparent = false;
 
-		queue.v[0].p = RageVector3(fXLeft,  fY + spline_pos[1], fZLeft);  queue.v[0].c = color; queue.v[0].t = RageVector2(fTexCoordLeft,  fTexCoordTop);
+		queue.v[0].p = left_vert;  queue.v[0].c = color; queue.v[0].t = RageVector2(fTexCoordLeft,  fTexCoordTop);
-		queue.v[1].p = RageVector3(fXCenter, fY + spline_pos[1], fZCenter); queue.v[1].c = color; queue.v[1].t = RageVector2(fTexCoordCenter, fTexCoordTop);
+		queue.v[1].p = center_vert; queue.v[1].c = color; queue.v[1].t = RageVector2(fTexCoordCenter, fTexCoordTop);
-		queue.v[2].p = RageVector3(fXRight, fY + spline_pos[1], fZRight);  queue.v[2].c = color; queue.v[2].t = RageVector2(fTexCoordRight, fTexCoordTop);
+		queue.v[2].p = right_vert;  queue.v[2].c = color; queue.v[2].t = RageVector2(fTexCoordRight, fTexCoordTop);
 		queue.v+=3;
 
 		if( queue.Free() < 3 || bLast )
@@ -753,10 +971,11 @@ void NoteDisplay::DrawHoldPart(vector<Sprite*> &vpSpr,
 }
 
 void NoteDisplay::DrawHoldBody(const TapNote& tn,
-	CommonColumnRenderArgs const& args, int iCol, float fBeat,
+	NoteFieldRenderArgs const& field_args,
+	NoteColumnRenderArgs const& column_args, float fBeat,
 	bool bIsBeingHeld, float fYHead, float fYTail, bool bIsAddition,
 	float fPercentFadeToFail, float fColorScale, bool bGlow,
-	float top_t, float bottom_t)
+	float top_beat, float bottom_beat)
 {
 	vector<Sprite*> vpSprTop;
 	Sprite *pSpriteTop = GetHoldSprite( m_HoldTopCap, NotePart_HoldTopCap, fBeat, tn.subType == TapNoteSubType_Roll, bIsBeingHeld && !cache->m_bHoldActiveIsAddLayer );
@@ -780,7 +999,7 @@ void NoteDisplay::DrawHoldBody(const TapNote& tn,
 		vpSprBottom.push_back( pSprBottom );
 	}
 
-	const bool bReverse = m_pPlayerState->m_PlayerOptions.GetCurrent().GetReversePercentForColumn(iCol) > 0.5f;
+	const bool bReverse = m_pPlayerState->m_PlayerOptions.GetCurrent().GetReversePercentForColumn(column_args.column) > 0.5f;
 	bool bFlipHoldBody = bReverse && cache->m_bFlipHoldBodyWhenReverse;
 	if( bFlipHoldBody )
 	{
@@ -814,55 +1033,56 @@ void NoteDisplay::DrawHoldBody(const TapNote& tn,
 	const float fFrameHeightTop	= pSpriteTop->GetUnzoomedHeight();
 	const float fFrameHeightBottom	= pSpriteBottom->GetUnzoomedHeight();
 
-	float fYStartPos = ArrowEffects::GetYPos( m_pPlayerState, iCol,
+	float fYStartPos = ArrowEffects::GetYPos( m_pPlayerState, column_args.column,
-		args.draw_pixels_after_targets, m_fYReverseOffsetPixels );
+		field_args.draw_pixels_after_targets, m_fYReverseOffsetPixels );
-	float fYEndPos = ArrowEffects::GetYPos( m_pPlayerState, iCol,
+	float fYEndPos = ArrowEffects::GetYPos( m_pPlayerState, column_args.column,
-		args.draw_pixels_before_targets, m_fYReverseOffsetPixels );
+		field_args.draw_pixels_before_targets, m_fYReverseOffsetPixels );
 	if( bReverse )
 		swap( fYStartPos, fYEndPos );
 
 	bool bTopAnchor = bReverse && cache->m_bTopHoldAnchorWhenReverse;
 
 	// Draw the top cap
-	DrawHoldPart(vpSprTop, args, iCol, fYStep, fPercentFadeToFail,
+	DrawHoldPart(vpSprTop, field_args, column_args, fYStep, fPercentFadeToFail,
 		fColorScale, bGlow,
 		tn.HoldResult.fOverlappedTime,
 		fYHead-fFrameHeightTop, fYHead,
 		fYStartPos, fYEndPos,
-		false, bTopAnchor, bFlipHoldBody, top_t, top_t);
+		false, bTopAnchor, bFlipHoldBody, top_beat, top_beat);
 
 	// Draw the body
-	DrawHoldPart(vpSprBody, args, iCol, fYStep, fPercentFadeToFail,
+	DrawHoldPart(vpSprBody, field_args, column_args, fYStep, fPercentFadeToFail,
 		fColorScale, bGlow,
 		tn.HoldResult.fOverlappedTime,
 		fYHead, fYTail,
 		fYStartPos, fYEndPos,
-		true, bTopAnchor, bFlipHoldBody, top_t, bottom_t);
+		true, bTopAnchor, bFlipHoldBody, top_beat, bottom_beat);
 
 	// Draw the bottom cap
-	DrawHoldPart(vpSprBottom, args, iCol, fYStep, fPercentFadeToFail,
+	DrawHoldPart(vpSprBottom, field_args, column_args, fYStep, fPercentFadeToFail,
 		fColorScale, bGlow,
 		tn.HoldResult.fOverlappedTime,
 		fYTail, fYTail+fFrameHeightBottom,
 		max(fYStartPos, fYHead), fYEndPos,
-		false, bTopAnchor, bFlipHoldBody, bottom_t, bottom_t);
+		false, bTopAnchor, bFlipHoldBody, bottom_beat, bottom_beat);
 }
 
 void NoteDisplay::DrawHold(const TapNote& tn,
-	CommonColumnRenderArgs const& args, int iCol, int iRow, bool bIsBeingHeld,
+	NoteFieldRenderArgs const& field_args,
+	NoteColumnRenderArgs const& column_args, int iRow, bool bIsBeingHeld,
 	const HoldNoteResult &Result, bool bIsAddition, float fPercentFadeToFail)
 {
 	int iEndRow = iRow + tn.iDuration;
-	float top_t= BeatToTValue(args, NoteRowToVisibleBeat(m_pPlayerState, iRow));
+	float top_beat= NoteRowToVisibleBeat(m_pPlayerState, iRow);
-	float bottom_t= BeatToTValue(args, NoteRowToVisibleBeat(m_pPlayerState, iEndRow));
+	float bottom_beat= NoteRowToVisibleBeat(m_pPlayerState, iEndRow);
 	if(bIsBeingHeld)
 	{
-		top_t= args.receptor_t;
+		top_beat= column_args.song_beat;
 	}
 
 	// bDrawGlowOnly is a little hacky.  We need to draw the diffuse part and the glow part one pass at a time to minimize state changes
 
-	bool bReverse = m_pPlayerState->m_PlayerOptions.GetCurrent().GetReversePercentForColumn(iCol) > 0.5f;
+	bool bReverse = m_pPlayerState->m_PlayerOptions.GetCurrent().GetReversePercentForColumn(column_args.column) > 0.5f;
 	float fStartBeat = NoteRowToBeat( max(tn.HoldResult.iLastHeldRow, iRow) );
 	float fThrowAway = 0;
 
@@ -872,11 +1092,11 @@ void NoteDisplay::DrawHold(const TapNote& tn,
 	if( tn.HoldResult.bActive  &&  tn.HoldResult.fLife > 0 )
 		;	// use the default values filled in above
 	else
-		fStartYOffset = ArrowEffects::GetYOffset( m_pPlayerState, iCol, fStartBeat, fThrowAway, bStartIsPastPeak );
+		fStartYOffset = ArrowEffects::GetYOffset( m_pPlayerState, column_args.column, fStartBeat, fThrowAway, bStartIsPastPeak );
 	
 	float fEndPeakYOffset	= 0;
 	bool bEndIsPastPeak = false;
-	float fEndYOffset	= ArrowEffects::GetYOffset( m_pPlayerState, iCol, NoteRowToBeat(iEndRow), fEndPeakYOffset, bEndIsPastPeak );
+	float fEndYOffset	= ArrowEffects::GetYOffset( m_pPlayerState, column_args.column, NoteRowToBeat(iEndRow), fEndPeakYOffset, bEndIsPastPeak );
 
 	// In boomerang, the arrows reverse direction at Y offset value fPeakAtYOffset.  
 	// If fPeakAtYOffset lies inside of the hold we're drawing, then the we 
@@ -889,8 +1109,8 @@ void NoteDisplay::DrawHold(const TapNote& tn,
 	if( bReverse )
 		swap( fStartYOffset, fEndYOffset );
 
-	const float fYHead		= ArrowEffects::GetYPos( m_pPlayerState, iCol, fStartYOffset, m_fYReverseOffsetPixels );
+	const float fYHead		= ArrowEffects::GetYPos( m_pPlayerState, column_args.column, fStartYOffset, m_fYReverseOffsetPixels );
-	const float fYTail		= ArrowEffects::GetYPos( m_pPlayerState, iCol, fEndYOffset, m_fYReverseOffsetPixels );
+	const float fYTail		= ArrowEffects::GetYPos( m_pPlayerState, column_args.column, fEndYOffset, m_fYReverseOffsetPixels );
 
 	const float fColorScale		= SCALE( tn.HoldResult.fLife, 0.0f, 1.0f, cache->m_fHoldLetGoGrayPercent, 1.0f );
 
@@ -899,6 +1119,9 @@ void NoteDisplay::DrawHold(const TapNote& tn,
 	/* The body and caps should have no overlap, so their order doesn't matter.
 	 * Draw the head last, so it appears on top. */
 	float fBeat = NoteRowToBeat(iRow);
+	// Side note:  I don't know why these two checks were commented out and I
+	// didn't bother to update them when rewriting the arguments that are
+	// passed to the note drawing functions. -Kyz
 	/*
 	if( !cache->m_bHoldHeadIsAboveWavyParts )
 	{
@@ -912,8 +1135,8 @@ void NoteDisplay::DrawHold(const TapNote& tn,
 	}
 	*/
 
-	DrawHoldBody(tn, args, iCol, fBeat, bIsBeingHeld, fYHead, fYTail, bIsAddition, fPercentFadeToFail, fColorScale, false, top_t, bottom_t);
+	DrawHoldBody(tn, field_args, column_args, fBeat, bIsBeingHeld, fYHead, fYTail, bIsAddition, fPercentFadeToFail, fColorScale, false, top_beat, bottom_beat);
-	DrawHoldBody(tn, args, iCol, fBeat, bIsBeingHeld, fYHead, fYTail, bIsAddition, fPercentFadeToFail, fColorScale, true, top_t, bottom_t);
+	DrawHoldBody(tn, field_args, column_args, fBeat, bIsBeingHeld, fYHead, fYTail, bIsAddition, fPercentFadeToFail, fColorScale, true, top_beat, bottom_beat);
 
 	/* These set the texture mode themselves. */
 	// this part was modified in pumpmania, where it flips the draw order
@@ -921,56 +1144,76 @@ void NoteDisplay::DrawHold(const TapNote& tn,
 	if( cache->m_bHoldTailIsAboveWavyParts )
 	{
 		Actor *pActor = GetHoldActor( m_HoldTail, NotePart_HoldTail, NoteRowToBeat(iRow), tn.subType == TapNoteSubType_Roll, bIsBeingHeld );
-		DrawActor(tn, pActor, NotePart_HoldTail, args, iCol, bFlipHeadAndTail ? fStartYOffset : fEndYOffset, fBeat, bIsAddition, fPercentFadeToFail, fColorScale, false);
+		DrawActor(tn, pActor, NotePart_HoldTail, field_args, column_args, bFlipHeadAndTail ? fStartYOffset : fEndYOffset, fBeat, bIsAddition, fPercentFadeToFail, fColorScale, false);
 	}
 	if( cache->m_bHoldHeadIsAboveWavyParts )
 	{
 		Actor *pActor = GetHoldActor( m_HoldHead, NotePart_HoldHead, NoteRowToBeat(iRow), tn.subType == TapNoteSubType_Roll, bIsBeingHeld );
-		DrawActor(tn, pActor, NotePart_HoldHead, args, iCol, bFlipHeadAndTail ? fEndYOffset : fStartYOffset, fBeat, bIsAddition, fPercentFadeToFail, fColorScale, bIsBeingHeld);
+		DrawActor(tn, pActor, NotePart_HoldHead, field_args, column_args, bFlipHeadAndTail ? fEndYOffset : fStartYOffset, fBeat, bIsAddition, fPercentFadeToFail, fColorScale, bIsBeingHeld);
 	}
 }
 
 void NoteDisplay::DrawActor(const TapNote& tn, Actor* pActor, NotePart part,
-	CommonColumnRenderArgs const& args, int iCol, float fYOffset, float fBeat,
+	NoteFieldRenderArgs const& field_args, NoteColumnRenderArgs const& column_args, float fYOffset, float fBeat,
 	bool bIsAddition, float fPercentFadeToFail, float fColorScale,
 	bool is_being_held)
 {
 	if (tn.type == TapNoteType_AutoKeysound && !GAMESTATE->m_bInStepEditor) return;
-	if(fYOffset < args.draw_pixels_after_targets ||
+	if(fYOffset < field_args.draw_pixels_after_targets ||
-		fYOffset > args.draw_pixels_before_targets)
+		fYOffset > field_args.draw_pixels_before_targets)
 		return;
-	float spline_t= BeatToTValue(args, fBeat);
+	float spline_beat= fBeat;
-	if(is_being_held) { spline_t= args.receptor_t; }
+	if(is_being_held) { spline_beat= column_args.song_beat; }
-	vector<float> spline_pos;
+
-	args.spline->evaluate(spline_t, spline_pos);
+	const float fAlpha	= ArrowEffects::GetAlpha(	m_pPlayerState, column_args.column, fYOffset, fPercentFadeToFail, m_fYReverseOffsetPixels, field_args.draw_pixels_before_targets, field_args.fade_before_targets );
-	const float fY		= ArrowEffects::GetYPos(	m_pPlayerState, iCol, fYOffset, m_fYReverseOffsetPixels ) + spline_pos[1];
+	const float fGlow	= ArrowEffects::GetGlow(	m_pPlayerState, column_args.column, fYOffset, fPercentFadeToFail, m_fYReverseOffsetPixels, field_args.draw_pixels_before_targets, field_args.fade_before_targets );
-	const float fX		= ArrowEffects::GetXPos(	m_pPlayerState, iCol, fYOffset ) + spline_pos[0];
-	const float fZ		= ArrowEffects::GetZPos(	m_pPlayerState, iCol, fYOffset ) + spline_pos[2];
-	const float fAlpha	= ArrowEffects::GetAlpha(	m_pPlayerState, iCol, fYOffset, fPercentFadeToFail, m_fYReverseOffsetPixels, args.draw_pixels_before_targets, args.fade_before_targets );
-	const float fGlow	= ArrowEffects::GetGlow(	m_pPlayerState, iCol, fYOffset, fPercentFadeToFail, m_fYReverseOffsetPixels, args.draw_pixels_before_targets, args.fade_before_targets );
 	const RageColor diffuse	= RageColor(fColorScale,fColorScale,fColorScale,fAlpha);
 	const RageColor glow	= RageColor(1,1,1,fGlow);
-	float fRotationX	= 0, fRotationZ	= 0;
-	const float fRotationY = ArrowEffects::GetRotationY( m_pPlayerState, fYOffset );
 
 	bool bIsHoldHead = tn.type == TapNoteType_HoldHead;
 	bool bIsHoldCap = bIsHoldHead || tn.type == TapNoteType_HoldTail;
 	
-	fRotationZ = ArrowEffects::GetRotationZ( m_pPlayerState, fBeat, bIsHoldHead );
-	if( !bIsHoldCap )
-	{
-		fRotationX = ArrowEffects::GetRotationX( m_pPlayerState, fYOffset );
-	}
-
 	if( tn.type != TapNoteType_HoldHead )
 		fColorScale		*= ArrowEffects::GetBrightness(	m_pPlayerState, fBeat );
 
-	pActor->SetRotationX( fRotationX );
+	// same logical structure as in UpdateReceptorGhostStuff, I just haven't
-	pActor->SetRotationY( fRotationY );
+	// figured out a good way to combine them. -Kyz
-	pActor->SetRotationZ( fRotationZ );
+	vector<float> sp_pos;
-	pActor->SetXY( fX, fY );
+	vector<float> sp_rot;
-	pActor->SetZ( fZ );
+	vector<float> sp_zoom;
-	pActor->SetZoom( ArrowEffects::GetZoom(m_pPlayerState) );
+	vector<float> ae_pos(3, 0.0f);
+	vector<float> ae_rot(3, 0.0f);
+	vector<float> ae_zoom(3, 0.0f);
+	column_args.spae_pos_for_beat(m_pPlayerState, spline_beat,
+		fYOffset, m_fYReverseOffsetPixels, sp_pos, ae_pos);
+
+	switch(column_args.rot_handler->m_spline_mode)
+	{
+		case NCSM_Disabled:
+			if(!bIsHoldCap)
+			{
+				ae_rot[0]= ArrowEffects::GetRotationX(m_pPlayerState, fYOffset);
+			}
+			ae_rot[1]= ArrowEffects::GetRotationY(m_pPlayerState, fYOffset);
+			ae_rot[2]= ArrowEffects::GetRotationZ(m_pPlayerState, fBeat, bIsHoldHead);
+			sp_rot.resize(3);
+			sp_rot[0]= sp_rot[1]= sp_rot[2]= 0.0f;
+			break;
+		case NCSM_Offset:
+			if(!bIsHoldCap)
+			{
+				ae_rot[0]= ArrowEffects::GetRotationX(m_pPlayerState, fYOffset);
+			}
+			ae_rot[1]= ArrowEffects::GetRotationY(m_pPlayerState, fYOffset);
+			ae_rot[2]= ArrowEffects::GetRotationZ(m_pPlayerState, fBeat, bIsHoldHead);
+			column_args.rot_handler->EvalForBeat(column_args.song_beat, spline_beat, sp_rot);
+			break;
+		case NCSM_Position:
+			column_args.rot_handler->EvalForBeat(column_args.song_beat, spline_beat, sp_rot);
+			break;
+	}
+	column_args.spae_zoom_for_beat(m_pPlayerState, spline_beat, sp_zoom, ae_zoom);
+	column_args.SetPRZForActor(pActor, sp_pos, ae_pos, sp_rot, ae_rot, sp_zoom, ae_zoom);
 	// [AJ] this two lines (and how they're handled) piss off many people:
 	pActor->SetDiffuse( diffuse );
 	pActor->SetGlow( glow );
@@ -1004,7 +1247,8 @@ void NoteDisplay::DrawActor(const TapNote& tn, Actor* pActor, NotePart part,
 }
 
 void NoteDisplay::DrawTap(const TapNote& tn,
-	CommonColumnRenderArgs const& args, int iCol, float fBeat,
+	NoteFieldRenderArgs const& field_args,
+	NoteColumnRenderArgs const& column_args, float fBeat,
 	bool bOnSameRowAsHoldStart, bool bOnSameRowAsRollStart,
 	bool bIsAddition, float fPercentFadeToFail)
 {
@@ -1078,21 +1322,89 @@ void NoteDisplay::DrawTap(const TapNote& tn,
 		pActor->HandleMessage( msg );
 	}
 
-	const float fYOffset = ArrowEffects::GetYOffset( m_pPlayerState, iCol, fBeat );
+	const float fYOffset = ArrowEffects::GetYOffset( m_pPlayerState, column_args.column, fBeat );
 	// this is the line that forces the (1,1,1,x) part of the noteskin diffuse -aj
-	DrawActor(tn, pActor, part, args, iCol, fYOffset, fBeat, bIsAddition, fPercentFadeToFail, 1.0f, false);
+	DrawActor(tn, pActor, part, field_args, column_args, fYOffset, fBeat, bIsAddition, fPercentFadeToFail, 1.0f, false);
 
 	if( tn.type == TapNoteType_Attack )
 		pActor->PlayCommand( "UnsetAttack" );
 }
 
+void NoteColumnRenderer::UpdateReceptorGhostStuff(Actor* receptor) const
+{
+	PlayerState const* player_state= m_field_render_args->player_state;
+	float song_beat= player_state->GetDisplayedPosition().m_fSongBeatVisible;
+	// sp_* will be filled with the settings from the splines.
+	// ae_* will be filled with the settings from ArrowEffects.
+	// The two together will be applied to the actor.
+	// sp_* will be zeroes in NCSM_Disabled, and ae_* will be zeroes in
+	// NCSM_Position, so the setting step won't have to check the mode. -Kyz
+	// sp_* are sized by the spline evaluate function.
+	vector<float> sp_pos;
+	vector<float> sp_rot;
+	vector<float> sp_zoom;
+	vector<float> ae_pos(3, 0.0f);
+	vector<float> ae_rot(3, 0.0f);
+	vector<float> ae_zoom(3, 0.0f);
+	switch(m_pos_handler.m_spline_mode)
+	{
+		case NCSM_Disabled:
+			ArrowEffects::GetXYZPos(player_state, m_column, 0, m_field_render_args->reverse_offset_pixels, ae_pos);
+			sp_pos.resize(3);
+			// Sure, resize is supposed to call the default constructor, and for
+			// numbers the default constructor is supposed to set it to zero, but
+			// I got bit for relying on that once. -Kyz
+			sp_pos[0]= sp_pos[1]= sp_pos[2]= 0.0f;
+			break;
+		case NCSM_Offset:
+			ArrowEffects::GetXYZPos(player_state, m_column, 0, m_field_render_args->reverse_offset_pixels, ae_pos);
+			m_pos_handler.EvalForReceptor(song_beat, sp_pos);
+			break;
+		case NCSM_Position:
+			m_pos_handler.EvalForReceptor(song_beat, sp_pos);
+			break;
+	}
+	switch(m_rot_handler.m_spline_mode)
+	{
+		case NCSM_Disabled:
+			ae_rot[2]= ArrowEffects::ReceptorGetRotationZ(player_state);
+			sp_rot.resize(3);
+			sp_rot[0]= sp_rot[1]= sp_rot[2]= 0.0f;
+			break;
+		case NCSM_Offset:
+			ae_rot[2]= ArrowEffects::ReceptorGetRotationZ(player_state);
+			m_rot_handler.EvalForReceptor(song_beat, sp_rot);
+			break;
+		case NCSM_Position:
+			m_rot_handler.EvalForReceptor(song_beat, sp_rot);
+			break;
+	}
+	switch(m_zoom_handler.m_spline_mode)
+	{
+		case NCSM_Disabled:
+			ae_zoom[0]= ae_zoom[1]= ae_zoom[2]= ArrowEffects::GetZoom(player_state);
+			sp_zoom.resize(3);
+			sp_zoom[0]= sp_zoom[1]= sp_zoom[2]= 0.0f;
+			break;
+		case NCSM_Offset:
+			ae_zoom[0]= ae_zoom[1]= ae_zoom[2]= ArrowEffects::GetZoom(player_state);
+			m_zoom_handler.EvalForReceptor(song_beat, sp_zoom);
+			break;
+		case NCSM_Position:
+			m_zoom_handler.EvalForReceptor(song_beat, sp_zoom);
+			break;
+	}
+	m_column_render_args.SetPRZForActor(receptor, sp_pos, ae_pos, sp_rot, ae_rot, sp_zoom, ae_zoom);
+}
+
 void NoteColumnRenderer::DrawPrimitives()
 {
-	m_render_args->spline= &m_spline;
+	m_column_render_args.song_beat= m_field_render_args->player_state->GetDisplayedPosition().m_fSongBeatVisible;
-	m_render_args->receptor_t= m_receptor_t;
+	m_column_render_args.pos_handler= &m_pos_handler;
-	m_render_args->beats_per_t= m_beats_per_t;
+	m_column_render_args.rot_handler= &m_rot_handler;
-	m_render_args->first_beat= NoteRowToBeat(m_render_args->first_row);
+	m_column_render_args.zoom_handler= &m_zoom_handler;
-	m_render_args->last_beat= NoteRowToBeat(m_render_args->last_row);
+	m_field_render_args->first_beat= NoteRowToBeat(m_field_render_args->first_row);
+	m_field_render_args->last_beat= NoteRowToBeat(m_field_render_args->last_row);
 	bool any_upcoming= false;
 	// Build lists of holds and taps for each player number, then pass those
 	// lists to the displays to draw.
@@ -1101,8 +1413,8 @@ void NoteColumnRenderer::DrawPrimitives()
 	vector<vector<NoteData::TrackMap::const_iterator> > holds(PLAYER_INVALID+1);
 	vector<vector<NoteData::TrackMap::const_iterator> > taps(PLAYER_INVALID+1);
 	NoteData::TrackMap::const_iterator begin, end;
-	m_render_args->note_data->GetTapNoteRangeInclusive(m_column,
+	m_field_render_args->note_data->GetTapNoteRangeInclusive(m_column,
-		m_render_args->first_row, m_render_args->last_row+1, begin, end);
+		m_field_render_args->first_row, m_field_render_args->last_row+1, begin, end);
 	for(; begin != end; ++begin)
 	{
 		TapNote const& tn= begin->second;
@@ -1133,7 +1445,7 @@ void NoteColumnRenderer::DrawPrimitives()
 #define DTS_INNER(pn, tap_set, draw_func, disp) \
 	if(!tap_set[pn].empty()) \
 	{ \
-		any_upcoming|= disp->draw_func(*m_render_args, m_column, tap_set[pn]); \
+		any_upcoming|= disp->draw_func(*m_field_render_args, m_column_render_args, tap_set[pn]); \
 	}
 #define DRAW_TAP_SET(tap_set, draw_func) \
 	FOREACH_PlayerNumber(pn) \
@@ -1146,12 +1458,12 @@ void NoteColumnRenderer::DrawPrimitives()
 	DTS_INNER(PLAYER_INVALID, taps, DrawTapsInRange, m_displays[PLAYER_INVALID]);
 #undef DTS_INNER
 #undef DRAW_TAP_SET
-	m_render_args->receptor_row->SetNoteUpcoming(m_column, any_upcoming);
+	m_field_render_args->receptor_row->SetNoteUpcoming(m_column, any_upcoming);
 }
 
 #include "LuaBinding.h"
 
-struct LunaNoteColumnRenderer : Luna<NoteColumnRenderer>
+struct LunaNCSplineHandler : Luna<NCSplineHandler>
 {
 	static int get_spline(T* p, lua_State* L)
 	{
@@ -1166,22 +1478,66 @@ struct LunaNoteColumnRenderer : Luna<NoteColumnRenderer>
 		p->member= FArg(1); \
 		COMMON_RETURN_SELF; \
 	}
+#define SET_B(member, name) \
+	static int name(T* p, lua_State* L) \
+	{ \
+		p->member= BArg(1); \
+		COMMON_RETURN_SELF; \
+	}
 	SET_T(m_receptor_t, set_receptor_t);
 	SET_T(m_beats_per_t, set_beats_per_t);
+	SET_B(m_subtract_song_beat_from_curr, set_subtract_song_beat);
+#undef SET_T
+#undef SET_B
+	static int set_spline_mode(T* p, lua_State* L)
+	{
+		p->m_spline_mode= Enum::Check<NoteColumnSplineMode>(L, 1);
+		COMMON_RETURN_SELF;
+	}
+	DEFINE_METHOD(get_spline_mode, m_spline_mode);
+	DEFINE_METHOD(get_subtract_song_beat, m_subtract_song_beat_from_curr);
+
+	LunaNCSplineHandler()
+	{
+		ADD_METHOD(get_spline);
+		ADD_METHOD(get_beats_per_t);
+		ADD_METHOD(set_beats_per_t);
+		ADD_METHOD(get_receptor_t);
+		ADD_METHOD(set_receptor_t);
+		ADD_METHOD(get_spline_mode);
+		ADD_METHOD(set_spline_mode);
+		ADD_METHOD(get_subtract_song_beat);
+		ADD_METHOD(set_subtract_song_beat);
+	}
+};
+
+LUA_REGISTER_CLASS(NCSplineHandler);
+
+struct LunaNoteColumnRenderer : Luna<NoteColumnRenderer>
+{
+#define GET_HANDLER(member, name) \
+	static int name(T* p, lua_State* L) \
+	{ \
+		p->member.PushSelf(L); \
+		return 1; \
+	}
+	GET_HANDLER(m_pos_handler, get_pos_handler);
+	GET_HANDLER(m_rot_handler, get_rot_handler);
+	GET_HANDLER(m_zoom_handler, get_zoom_handler);
+#undef GET_HANDLER
 
 	LunaNoteColumnRenderer()
 	{
-		ADD_METHOD(get_spline);
+		ADD_METHOD(get_pos_handler);
-		ADD_METHOD(get_receptor_t);
+		ADD_METHOD(get_rot_handler);
-		ADD_METHOD(get_beats_per_t);
+		ADD_METHOD(get_zoom_handler);
-		ADD_METHOD(set_receptor_t);
-		ADD_METHOD(set_beats_per_t);
 	}
 };
 
 LUA_REGISTER_DERIVED_CLASS(NoteColumnRenderer, Actor)
 
 /*
+ * NoteColumnRenderer and associated spline stuff (c) Eric Reese 2014-2015
  * (c) 2001-2006 Brian Bugh, Ben Nordstrom, Chris Danford, Steve Checkoway
  * All rights reserved.
  * 

src/NoteDisplay.h

@@ -87,16 +87,24 @@ enum ActiveType
 #define FOREACH_ActiveType( i ) FOREACH_ENUM( ActiveType, i )
 const RString &ActiveTypeToString( ActiveType at );
 
+enum NoteColumnSplineMode
+{
+	NCSM_Disabled,
+	NCSM_Offset,
+	NCSM_Position,
+	NUM_NoteColumnSplineMode,
+	NoteColumnSplineMode_Invalid
+};
+
 // A little pod struct to carry the data the NoteField needs to pass to the
 // NoteDisplay during rendering.
-struct CommonColumnRenderArgs
+struct NoteFieldRenderArgs
 {
+	PlayerState const* player_state; // to look up PlayerOptions
+	float reverse_offset_pixels;
 	ReceptorArrowRow* receptor_row;
 	GhostArrowRow* ghost_row;
 	NoteData const* note_data;
-	CubicSplineN const* spline;
-	float receptor_t;
-	float beats_per_t;
 	float first_beat;
 	float last_beat;
 	int first_row;
@@ -110,6 +118,52 @@ struct CommonColumnRenderArgs
 	float fade_before_targets;
 };
 
+// NCSplineHandler exists to allow NoteColumnRenderer to have separate
+// splines for position, rotation, and zoom, while concisely presenting the
+// same interface for all three.
+struct NCSplineHandler
+{
+	NCSplineHandler()
+	{
+		m_spline.redimension(3);
+		m_spline.m_owned_by_actor= true;
+		m_spline_mode= NCSM_Disabled;
+		m_receptor_t= 0.0f;
+		m_beats_per_t= 1.0f;
+		m_subtract_song_beat_from_curr= true;
+	}
+	float BeatToTValue(float song_beat, float note_beat) const;
+	void EvalForBeat(float song_beat, float note_beat, vector<float>& ret) const;
+	void EvalDerivForBeat(float song_beat, float note_beat, vector<float>& ret) const;
+	void EvalForReceptor(float song_beat, vector<float>& ret) const;
+
+	CubicSplineN m_spline;
+	NoteColumnSplineMode m_spline_mode;
+	float m_receptor_t;
+	float m_beats_per_t;
+	bool m_subtract_song_beat_from_curr;
+
+	void PushSelf(lua_State* L);
+};
+
+struct NoteColumnRenderArgs
+{
+	void spae_pos_for_beat(PlayerState const* state,
+		float beat, float y_offset, float y_reverse_offset,
+		vector<float>& sp_pos, vector<float>& ae_pos) const;
+	void spae_zoom_for_beat(PlayerState const* state, float beat,
+		vector<float>& sp_zoom, vector<float>& ae_zoom) const;
+	void SetPRZForActor(Actor* actor,
+		vector<float> const& sp_pos, vector<float> const& ae_pos,
+		vector<float> const& sp_rot, vector<float> const& ae_rot,
+		vector<float> const& sp_zoom, vector<float> const& ae_zoom) const;
+	NCSplineHandler const* pos_handler;
+	NCSplineHandler const* rot_handler;
+	NCSplineHandler const* zoom_handler;
+	float song_beat;
+	int column;
+};
+
 /** @brief Draws TapNotes and HoldNotes. */
 class NoteDisplay
 {
@@ -122,11 +176,12 @@ public:
 	static void Update( float fDeltaTime );
 
 	bool IsOnScreen( float fBeat, int iCol, int iDrawDistanceAfterTargetsPixels, int iDrawDistanceBeforeTargetsPixels ) const;
-	float BeatToTValue(CommonColumnRenderArgs const& args, float beat) const;
 
-	bool DrawHoldsInRange(CommonColumnRenderArgs const& args, int column,
+	bool DrawHoldsInRange(NoteFieldRenderArgs const& field_args,
+		NoteColumnRenderArgs const& column_args,
 		vector<NoteData::TrackMap::const_iterator> const& tap_set);
-	bool DrawTapsInRange(CommonColumnRenderArgs const& args, int column,
+	bool DrawTapsInRange(NoteFieldRenderArgs const& field_args,
+		NoteColumnRenderArgs const& column_args,
 		vector<NoteData::TrackMap::const_iterator> const& tap_set);
 	/**
 	 * @brief Draw the TapNote onto the NoteField.
@@ -141,11 +196,13 @@ public:
 	 * @param fDrawDistanceAfterTargetsPixels how much to draw after the receptors.
 	 * @param fDrawDistanceBeforeTargetsPixels how much ot draw before the receptors.
 	 * @param fFadeInPercentOfDrawFar when to start fading in. */
-	void DrawTap(const TapNote& tn, CommonColumnRenderArgs const& args,
+	void DrawTap(const TapNote& tn, NoteFieldRenderArgs const& field_args,
-		int iCol, float fBeat, bool bOnSameRowAsHoldStart,
+		NoteColumnRenderArgs const& column_args, float fBeat,
+		bool bOnSameRowAsHoldStart,
 		bool bOnSameRowAsRollBeat, bool bIsAddition, float fPercentFadeToFail);
-	void DrawHold(const TapNote& tn, CommonColumnRenderArgs const& args,
+	void DrawHold(const TapNote& tn, NoteFieldRenderArgs const& field_args,
-		int iCol, int iRow, bool bIsBeingHeld, const HoldNoteResult &Result,
+		NoteColumnRenderArgs const& column_args, int iRow, bool bIsBeingHeld,
+		const HoldNoteResult &Result,
 		bool bIsAddition, float fPercentFadeToFail);
 
 	bool DrawHoldHeadForTapsOnSameRow() const;
@@ -158,19 +215,22 @@ private:
 	Sprite *GetHoldSprite( NoteColorSprite ncs[NUM_HoldType][NUM_ActiveType], NotePart part, float fNoteBeat, bool bIsRoll, bool bIsBeingHeld );
 
 	void DrawActor(const TapNote& tn, Actor* pActor, NotePart part,
-		CommonColumnRenderArgs const& args, int iCol, float fYOffset, float fBeat,
+		NoteFieldRenderArgs const& field_args,
+		NoteColumnRenderArgs const& column_args, float fYOffset, float fBeat,
 		bool bIsAddition, float fPercentFadeToFail, float fColorScale,
 		bool is_being_held);
-	void DrawHoldBody(const TapNote& tn, CommonColumnRenderArgs const& args,
+	void DrawHoldBody(const TapNote& tn, NoteFieldRenderArgs const& field_args,
-		int iCol, float fBeat, bool bIsBeingHeld, float fYHead, float fYTail,
+		NoteColumnRenderArgs const& column_args, float fBeat, bool bIsBeingHeld,
+		float fYHead, float fYTail,
 		bool bIsAddition, float fPercentFadeToFail, float fColorScale,
-		bool bGlow, float top_t, float bottom_t);
+		bool bGlow, float top_beat, float bottom_beat);
 	void DrawHoldPart(vector<Sprite*> &vpSpr,
-		CommonColumnRenderArgs const& args, int iCol, int fYStep,
+		NoteFieldRenderArgs const& field_args,
+		NoteColumnRenderArgs const& column_args, int fYStep,
 		float fPercentFadeToFail, float fColorScale, bool bGlow,
 		float fOverlappedTime, float fYTop, float fYBottom, float fYStartPos,
 		float fYEndPos, bool bWrapping, bool bAnchorToTop,
-		bool bFlipTextureVertically, float top_t, float bottom_t);
+		bool bFlipTextureVertically, float top_beat, float bottom_beat);
 
 	const PlayerState	*m_pPlayerState;	// to look up PlayerOptions
 	NoteMetricCache_t	*cache;
@@ -196,21 +256,24 @@ private:
 // actors so they can move with the rest of the column.  I didn't use
 // ActorProxy because the receptor/ghost actors need to pull in the parent
 // state of their rows and the parent state of the column. -Kyz
-class NoteColumnRenderer : public Actor
-{
-	public:
-	NoteColumnRenderer()
-	{
-		m_spline.redimension(3);
-		m_spline.m_owned_by_actor= true;
-	}
-	NoteDisplay* m_displays[PLAYER_INVALID+1];
-	CommonColumnRenderArgs* m_render_args;
-	int m_column;
-	float m_receptor_t;
-	float m_beats_per_t;
-	CubicSplineN m_spline;
 
+struct NoteColumnRenderer : public Actor
+{
+	NoteDisplay* m_displays[PLAYER_INVALID+1];
+	NoteFieldRenderArgs* m_field_render_args;
+	NoteColumnRenderArgs m_column_render_args;
+	int m_column;
+	// m_column_render_args has pointers to these fields that are updated
+	// every frame instead of using m_column_render_args directly so that they
+	// can be moved into a tween state later. -Kyz
+	NCSplineHandler m_pos_handler;
+	NCSplineHandler m_rot_handler;
+	NCSplineHandler m_zoom_handler;
+
+	// UpdateReceptorGhostStuff takes care of the logic for making the ghost
+	// and receptor positions follow the splines.  It's called by their row
+	// update functions. -Kyz
+	void UpdateReceptorGhostStuff(Actor* receptor) const;
 	virtual void DrawPrimitives();
 	virtual void PushSelf(lua_State* L);
 };
@@ -218,6 +281,7 @@ class NoteColumnRenderer : public Actor
 #endif
 
 /**
+ * NoteColumnRenderer and associated spline stuff (c) Eric Reese 2014-2015
  * @file
  * @author Brian Bugh, Ben Nordstrom, Chris Danford, Steve Checkoway (c) 2001-2006
  * @section LICENSE

src/NoteField.cpp

@@ -63,11 +63,11 @@ NoteField::NoteField()
 
 	// I decided to do it this way because I don't want to dig through
 	// ScreenEdit to change all the places it touches the markers. -Kyz
-	m_ColumnRenderArgs.selection_begin_marker= &m_iBeginMarker;
+	m_FieldRenderArgs.selection_begin_marker= &m_iBeginMarker;
-	m_ColumnRenderArgs.selection_end_marker= &m_iEndMarker;
+	m_FieldRenderArgs.selection_end_marker= &m_iEndMarker;
 	m_iBeginMarker = m_iEndMarker = -1;
 
-	m_ColumnRenderArgs.fail_fade = -1;
+	m_FieldRenderArgs.fail_fade = -1;
 
 	m_StepCallback.SetFromNil();
 	m_SetPressedCallback.SetFromNil();
@@ -192,7 +192,7 @@ void NoteField::Load(
 	m_iDrawDistanceBeforeTargetsPixels = iDrawDistanceBeforeTargetsPixels;
 	ASSERT( m_iDrawDistanceBeforeTargetsPixels >= m_iDrawDistanceAfterTargetsPixels );
 
-	m_ColumnRenderArgs.fail_fade = -1;
+	m_FieldRenderArgs.fail_fade = -1;
 
 	//int i1 = m_pNoteData->GetNumTracks();
 	//int i2 = GAMESTATE->GetCurrentStyle()->m_iColsPerPlayer;
@@ -248,9 +248,11 @@ void NoteField::Load(
 
 void NoteField::InitColumnRenderers()
 {
-	m_ColumnRenderArgs.receptor_row= &(m_pCurDisplay->m_ReceptorArrowRow);
+	m_FieldRenderArgs.player_state= m_pPlayerState;
-	m_ColumnRenderArgs.ghost_row= &(m_pCurDisplay->m_GhostArrowRow);
+	m_FieldRenderArgs.reverse_offset_pixels= m_fYReverseOffsetPixels;
-	m_ColumnRenderArgs.note_data= m_pNoteData;
+	m_FieldRenderArgs.receptor_row= &(m_pCurDisplay->m_ReceptorArrowRow);
+	m_FieldRenderArgs.ghost_row= &(m_pCurDisplay->m_GhostArrowRow);
+	m_FieldRenderArgs.note_data= m_pNoteData;
 	m_ColumnRenderers.resize(GAMESTATE->GetCurrentStyle()->m_iColsPerPlayer);
 	for(size_t ncr= 0; ncr < m_ColumnRenderers.size(); ++ncr)
 	{
@@ -260,7 +262,8 @@ void NoteField::InitColumnRenderers()
 		}
 		m_ColumnRenderers[ncr].m_displays[PLAYER_INVALID]= &(m_pCurDisplay->display[ncr]);
 		m_ColumnRenderers[ncr].m_column= ncr;
-		m_ColumnRenderers[ncr].m_render_args= &m_ColumnRenderArgs;
+		m_ColumnRenderers[ncr].m_column_render_args.column= ncr;
+		m_ColumnRenderers[ncr].m_field_render_args= &m_FieldRenderArgs;
 	}
 	m_pCurDisplay->m_ReceptorArrowRow.SetColumnRenderers(m_ColumnRenderers);
 	m_pCurDisplay->m_GhostArrowRow.SetColumnRenderers(m_ColumnRenderers);
@@ -305,11 +308,11 @@ void NoteField::Update( float fDeltaTime )
 	cur->m_ReceptorArrowRow.Update( fDeltaTime );
 	cur->m_GhostArrowRow.Update( fDeltaTime );
 
-	if( m_ColumnRenderArgs.fail_fade >= 0 )
+	if( m_FieldRenderArgs.fail_fade >= 0 )
-		m_ColumnRenderArgs.fail_fade = min( m_ColumnRenderArgs.fail_fade + fDeltaTime/FADE_FAIL_TIME, 1 );
+		m_FieldRenderArgs.fail_fade = min( m_FieldRenderArgs.fail_fade + fDeltaTime/FADE_FAIL_TIME, 1 );
 
 	// Update fade to failed
-	m_pCurDisplay->m_ReceptorArrowRow.SetFadeToFailPercent( m_ColumnRenderArgs.fail_fade );
+	m_pCurDisplay->m_ReceptorArrowRow.SetFadeToFailPercent( m_FieldRenderArgs.fail_fade );
 
 	NoteDisplay::Update( fDeltaTime );
 	/* Update all NoteDisplays. Hack: We need to call this once per frame, not
@@ -861,41 +864,41 @@ void NoteField::DrawPrimitives()
 	const PlayerOptions &current_po = m_pPlayerState->m_PlayerOptions.GetCurrent();
 
 	// Adjust draw range depending on some effects
-	m_ColumnRenderArgs.draw_pixels_after_targets= m_iDrawDistanceAfterTargetsPixels;
+	m_FieldRenderArgs.draw_pixels_after_targets= m_iDrawDistanceAfterTargetsPixels;
 	// HACK: If boomerang and centered are on, then we want to draw much 
 	// earlier so that the notes don't pop on screen.
 	float fCenteredTimesBoomerang = 
 		current_po.m_fScrolls[PlayerOptions::SCROLL_CENTERED] * 
 		current_po.m_fAccels[PlayerOptions::ACCEL_BOOMERANG];
-	m_ColumnRenderArgs.draw_pixels_after_targets += int(SCALE( fCenteredTimesBoomerang, 0.f, 1.f, 0.f, -SCREEN_HEIGHT/2 ));
+	m_FieldRenderArgs.draw_pixels_after_targets += int(SCALE( fCenteredTimesBoomerang, 0.f, 1.f, 0.f, -SCREEN_HEIGHT/2 ));
-	m_ColumnRenderArgs.draw_pixels_before_targets = m_iDrawDistanceBeforeTargetsPixels;
+	m_FieldRenderArgs.draw_pixels_before_targets = m_iDrawDistanceBeforeTargetsPixels;
 
 	float fDrawScale = 1;
 	fDrawScale *= 1 + 0.5f * fabsf( current_po.m_fPerspectiveTilt );
 	fDrawScale *= 1 + fabsf( current_po.m_fEffects[PlayerOptions::EFFECT_MINI] );
 
-	m_ColumnRenderArgs.draw_pixels_after_targets = (int)(m_ColumnRenderArgs.draw_pixels_after_targets * fDrawScale);
+	m_FieldRenderArgs.draw_pixels_after_targets = (int)(m_FieldRenderArgs.draw_pixels_after_targets * fDrawScale);
-	m_ColumnRenderArgs.draw_pixels_before_targets = (int)(m_ColumnRenderArgs.draw_pixels_before_targets * fDrawScale);
+	m_FieldRenderArgs.draw_pixels_before_targets = (int)(m_FieldRenderArgs.draw_pixels_before_targets * fDrawScale);
 
 
 	// Probe for first and last notes on the screen
-	float fFirstBeatToDraw = FindFirstDisplayedBeat( m_pPlayerState, m_ColumnRenderArgs.draw_pixels_after_targets );
+	float fFirstBeatToDraw = FindFirstDisplayedBeat( m_pPlayerState, m_FieldRenderArgs.draw_pixels_after_targets );
-	float fLastBeatToDraw = FindLastDisplayedBeat( m_pPlayerState, m_ColumnRenderArgs.draw_pixels_before_targets );
+	float fLastBeatToDraw = FindLastDisplayedBeat( m_pPlayerState, m_FieldRenderArgs.draw_pixels_before_targets );
 
 	m_pPlayerState->m_fLastDrawnBeat = fLastBeatToDraw;
 
-	m_ColumnRenderArgs.first_row  = BeatToNoteRow(fFirstBeatToDraw);
+	m_FieldRenderArgs.first_row  = BeatToNoteRow(fFirstBeatToDraw);
-	m_ColumnRenderArgs.last_row   = BeatToNoteRow(fLastBeatToDraw);
+	m_FieldRenderArgs.last_row   = BeatToNoteRow(fLastBeatToDraw);
 
 	//LOG->Trace( "start = %f.1, end = %f.1", fFirstBeatToDraw-fSongBeat, fLastBeatToDraw-fSongBeat );
-	//LOG->Trace( "Drawing elements %d through %d", m_ColumnRenderArgs.first_row, m_ColumnRenderArgs.last_row );
+	//LOG->Trace( "Drawing elements %d through %d", m_FieldRenderArgs.first_row, m_FieldRenderArgs.last_row );
 
-#define IS_ON_SCREEN( fBeat )  ( fFirstBeatToDraw <= (fBeat) && (fBeat) <= fLastBeatToDraw && IsOnScreen( fBeat, 0, m_ColumnRenderArgs.draw_pixels_after_targets, m_ColumnRenderArgs.draw_pixels_before_targets ) )
+#define IS_ON_SCREEN( fBeat )  ( fFirstBeatToDraw <= (fBeat) && (fBeat) <= fLastBeatToDraw && IsOnScreen( fBeat, 0, m_FieldRenderArgs.draw_pixels_after_targets, m_FieldRenderArgs.draw_pixels_before_targets ) )
 
 	// Draw board
 	if( SHOW_BOARD )
 	{
-		DrawBoard( m_ColumnRenderArgs.draw_pixels_after_targets, m_ColumnRenderArgs.draw_pixels_before_targets );
+		DrawBoard( m_FieldRenderArgs.draw_pixels_after_targets, m_FieldRenderArgs.draw_pixels_before_targets );
 	}
 
 	// Draw Receptors
@@ -918,7 +921,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < tSigs.size(); i++)
 		{
 			const TimeSignatureSegment *ts = ToTimeSignature(tSigs[i]);
-			int iSegmentEndRow = (i + 1 == tSigs.size()) ? m_ColumnRenderArgs.last_row : tSigs[i+1]->GetRow();
+			int iSegmentEndRow = (i + 1 == tSigs.size()) ? m_FieldRenderArgs.last_row : tSigs[i+1]->GetRow();
 
 			// beat bars every 16th note
 			int iDrawBeatBarsEveryRows = BeatToNoteRow( ((float)ts->GetDen()) / 4 ) / 4;
@@ -961,7 +964,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_SCROLL]->size(); i++)
 		{
 			ScrollSegment *seg = ToScroll( segs[SEGMENT_SCROLL]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -973,7 +976,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_BPM]->size(); i++)
 		{
 			const BPMSegment *seg = ToBPM( segs[SEGMENT_BPM]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -985,7 +988,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_STOP]->size(); i++)
 		{
 			const StopSegment *seg = ToStop( segs[SEGMENT_STOP]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -997,7 +1000,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_DELAY]->size(); i++)
 		{
 			const DelaySegment *seg = ToDelay( segs[SEGMENT_DELAY]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -1009,7 +1012,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_WARP]->size(); i++)
 		{
 			const WarpSegment *seg = ToWarp( segs[SEGMENT_WARP]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -1021,7 +1024,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_TIME_SIG]->size(); i++)
 		{
 			const TimeSignatureSegment *seg = ToTimeSignature( segs[SEGMENT_TIME_SIG]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -1033,7 +1036,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_TICKCOUNT]->size(); i++)
 		{
 			const TickcountSegment *seg = ToTickcount( segs[SEGMENT_TICKCOUNT]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -1045,7 +1048,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_COMBO]->size(); i++)
 		{
 			const ComboSegment *seg = ToCombo( segs[SEGMENT_COMBO]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -1057,7 +1060,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_LABEL]->size(); i++)
 		{
 			const LabelSegment *seg = ToLabel( segs[SEGMENT_LABEL]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -1069,7 +1072,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_SPEED]->size(); i++)
 		{
 			const SpeedSegment *seg = ToSpeed( segs[SEGMENT_SPEED]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -1082,7 +1085,7 @@ void NoteField::DrawPrimitives()
 		for (i = 0; i < segs[SEGMENT_FAKE]->size(); i++)
 		{
 			const FakeSegment *seg = ToFake( segs[SEGMENT_FAKE]->at(i) );
-			if( seg->GetRow() >= m_ColumnRenderArgs.first_row && seg->GetRow() <= m_ColumnRenderArgs.last_row )
+			if( seg->GetRow() >= m_FieldRenderArgs.first_row && seg->GetRow() <= m_FieldRenderArgs.last_row )
 			{
 				float fBeat = seg->GetBeat();
 				if( IS_ON_SCREEN(fBeat) )
@@ -1102,8 +1105,8 @@ void NoteField::DrawPrimitives()
 				float fSecond = a->fStartSecond;
 				float fBeat = timing.GetBeatFromElapsedTime( fSecond );
 
-				if( BeatToNoteRow(fBeat) >= m_ColumnRenderArgs.first_row &&
+				if( BeatToNoteRow(fBeat) >= m_FieldRenderArgs.first_row &&
-					BeatToNoteRow(fBeat) <= m_ColumnRenderArgs.last_row)
+					BeatToNoteRow(fBeat) <= m_FieldRenderArgs.last_row)
 				{
 					if( IS_ON_SCREEN(fBeat) )
 						DrawAttackText( fBeat, *a );
@@ -1121,8 +1124,8 @@ void NoteField::DrawPrimitives()
 				FOREACH_CONST(Attack, attacks, a)
 				{
 					float fBeat = timing.GetBeatFromElapsedTime(a->fStartSecond);
-					if (BeatToNoteRow(fBeat) >= m_ColumnRenderArgs.first_row &&
+					if (BeatToNoteRow(fBeat) >= m_FieldRenderArgs.first_row &&
-						BeatToNoteRow(fBeat) <= m_ColumnRenderArgs.last_row &&
+						BeatToNoteRow(fBeat) <= m_FieldRenderArgs.last_row &&
 						IS_ON_SCREEN(fBeat))
 					{
 						this->DrawAttackText(fBeat, *a);
@@ -1206,20 +1209,20 @@ void NoteField::DrawPrimitives()
 		{
 			int iBegin = m_iBeginMarker;
 			int iEnd = m_iEndMarker;
-			CLAMP( iBegin, m_ColumnRenderArgs.first_row, m_ColumnRenderArgs.last_row );
+			CLAMP( iBegin, m_FieldRenderArgs.first_row, m_FieldRenderArgs.last_row );
-			CLAMP( iEnd, m_ColumnRenderArgs.first_row, m_ColumnRenderArgs.last_row );
+			CLAMP( iEnd, m_FieldRenderArgs.first_row, m_FieldRenderArgs.last_row );
 			DrawAreaHighlight( iBegin, iEnd );
 		}
 		else if( m_iBeginMarker != -1 )
 		{
-			if( m_iBeginMarker >= m_ColumnRenderArgs.first_row &&
+			if( m_iBeginMarker >= m_FieldRenderArgs.first_row &&
-				m_iBeginMarker <= m_ColumnRenderArgs.last_row )
+				m_iBeginMarker <= m_FieldRenderArgs.last_row )
 				DrawMarkerBar( m_iBeginMarker );
 		}
 		else if( m_iEndMarker != -1 )
 		{
-			if( m_iEndMarker >= m_ColumnRenderArgs.first_row &&
+			if( m_iEndMarker >= m_FieldRenderArgs.first_row &&
-				m_iEndMarker <= m_ColumnRenderArgs.last_row )
+				m_iEndMarker <= m_FieldRenderArgs.last_row )
 			DrawMarkerBar( m_iEndMarker );
 		}
 	}
@@ -1233,9 +1236,9 @@ void NoteField::DrawPrimitives()
 		 ssprintf("NumTracks %d != ColsPerPlayer %d",m_pNoteData->GetNumTracks(), 
 			  GAMESTATE->GetCurrentStyle()->m_iColsPerPlayer));
 
-	m_ColumnRenderArgs.selection_glow= SCALE(
+	m_FieldRenderArgs.selection_glow= SCALE(
 		RageFastCos(RageTimer::GetTimeSinceStartFast()*2), -1, 1, 0.1f, 0.3f);
-	m_ColumnRenderArgs.fade_before_targets= FADE_BEFORE_TARGETS_PERCENT;
+	m_FieldRenderArgs.fade_before_targets= FADE_BEFORE_TARGETS_PERCENT;
 
 	for( int j=0; j<m_pNoteData->GetNumTracks(); j++ )	// for each arrow column
 	{
@@ -1248,7 +1251,7 @@ void NoteField::DrawPrimitives()
 
 void NoteField::FadeToFail()
 {
-	m_ColumnRenderArgs.fail_fade = max( 0.0f, m_ColumnRenderArgs.fail_fade );	// this will slowly increase every Update()
+	m_FieldRenderArgs.fail_fade = max( 0.0f, m_FieldRenderArgs.fail_fade );	// this will slowly increase every Update()
 		// don't fade all over again if this is called twice
 }
 
@@ -1446,7 +1449,7 @@ public:
 		return 0;
 	}
 
-	static int GetColumnActors(T* p, lua_State* L)
+	static int get_column_actors(T* p, lua_State* L)
 	{
 		lua_createtable(L, p->m_ColumnRenderers.size(), 0);
 		for(size_t i= 0; i < p->m_ColumnRenderers.size(); ++i)
@@ -1467,7 +1470,7 @@ public:
 		ADD_METHOD(SetPressed);
 		ADD_METHOD(DidTapNote);
 		ADD_METHOD(DidHoldNote);
-		ADD_METHOD(GetColumnActors);
+		ADD_METHOD(get_column_actors);
 	}
 };
 

src/NoteField.h

@@ -105,7 +105,7 @@ protected:
 		~NoteDisplayCols() { delete [] display; }
 	};
 
-	CommonColumnRenderArgs m_ColumnRenderArgs;
+	NoteFieldRenderArgs m_FieldRenderArgs;
 
 	/* All loaded note displays, mapped by their name. */
 	map<RString, NoteDisplayCols *> m_NoteDisplays;

src/RageMath.cpp

@@ -41,6 +41,22 @@ void RageVec3Normalize( RageVector3* pOut, const RageVector3* pV )
 	pOut->z = pV->z * scale;
 }
 
+void VectorFloatNormalize(vector<float>& v)
+{
+	ASSERT_M(v.size() == 3, "Can't normalize a non-3D vector.");
+	float scale = 1.0f / sqrtf(v[0]*v[0] + v[1]*v[1] + v[2]*v[2]);
+	v[0]*= scale;
+	v[1]*= scale;
+	v[2]*= scale;
+}
+
+void RageVec3Cross(RageVector3* ret, RageVector3 const* a, RageVector3 const* b)
+{
+	ret->x= (a->y * b->z) - (a->z * b->y);
+	ret->y= ((a->x * b->z) - (a->z * b->x));
+	ret->z= (a->x * b->y) - (a->y * b->x);
+}
+
 void RageVec3TransformCoord( RageVector3* pOut, const RageVector3* pV, const RageMatrix* pM )
 {
 	RageVector4 temp( pV->x, pV->y, pV->z, 1.0f );	// translate
@@ -314,6 +330,21 @@ void RageMatrixRotationXYZ( RageMatrix* pOut, float rX, float rY, float rZ )
 	pOut->m33 = 1;
 }
 
+void RageAARotate(RageVector3* inret, RageVector3 const* axis, float angle)
+{
+	float ha= angle/2.0f;
+	float ca2= RageFastCos(ha);
+	float sa2= RageFastSin(ha);
+	RageVector4 quat(axis->x * sa2, axis->y * sa2, axis->z * sa2, ca2);
+	RageVector4 quatc(-quat.x, -quat.y, -quat.z, ca2);
+	RageVector4 point(inret->x, inret->y, inret->z, 0.0f);
+	RageQuatMultiply(&point, quat, point);
+	RageQuatMultiply(&point, point, quatc);
+	inret->x= point.x;
+	inret->y= point.y;
+	inret->z= point.z;
+}
+
 void RageQuatMultiply( RageVector4* pOut, const RageVector4 &pA, const RageVector4 &pB )
 {
 	RageVector4 out;

src/RageMath.h

@@ -18,6 +18,8 @@ void RageVec3AddToBounds( const RageVector3 &p, RageVector3 &mins, RageVector3 &
 
 void RageVec2Normalize( RageVector2* pOut, const RageVector2* pV );
 void RageVec3Normalize( RageVector3* pOut, const RageVector3* pV );
+void VectorFloatNormalize(vector<float>& v);
+void RageVec3Cross(RageVector3* ret, RageVector3 const* a, RageVector3 const* b);
 void RageVec3TransformCoord( RageVector3* pOut, const RageVector3* pV, const RageMatrix* pM );
 void RageVec3TransformNormal( RageVector3* pOut, const RageVector3* pV, const RageMatrix* pM );
 void RageVec4TransformCoord( RageVector4* pOut, const RageVector4* pV, const RageMatrix* pM );
@@ -34,6 +36,7 @@ void RageMatrixRotationX( RageMatrix* pOut, float fTheta );
 void RageMatrixRotationY( RageMatrix* pOut, float fTheta );
 void RageMatrixRotationZ( RageMatrix* pOut, float fTheta );
 void RageMatrixRotationXYZ( RageMatrix* pOut, float rX, float rY, float rZ );
+void RageAARotate(RageVector3* inret, RageVector3 const* axis, float angle);
 void RageQuatFromHPR(RageVector4* pOut, RageVector3 hpr );
 void RageQuatFromPRH(RageVector4* pOut, RageVector3 prh );
 void RageMatrixFromQuat( RageMatrix* pOut, const RageVector4 q );

src/ReceptorArrowRow.cpp

@@ -53,8 +53,6 @@ void ReceptorArrowRow::Update( float fDeltaTime )
 
 	for( unsigned c=0; c<m_ReceptorArrow.size(); c++ )
 	{
-		vector<float> spline_pos;
-		(*m_renderers)[c].m_spline.evaluate((*m_renderers)[c].m_receptor_t, spline_pos);
 		// m_fDark==1 or m_fFadeToFailPercent==1 should make fBaseAlpha==0
 		float fBaseAlpha = (1 - m_pPlayerState->m_PlayerOptions.GetCurrent().m_fDark);
 		if( m_fFadeToFailPercent != -1 )
@@ -65,18 +63,7 @@ void ReceptorArrowRow::Update( float fDeltaTime )
 		m_ReceptorArrow[c]->SetBaseAlpha( fBaseAlpha );
 
 		// set arrow XYZ
-		float fX = ArrowEffects::GetXPos( m_pPlayerState, c, 0 );
+		(*m_renderers)[c].UpdateReceptorGhostStuff(m_ReceptorArrow[c]);
-		const float fY = ArrowEffects::GetYPos( m_pPlayerState, c, 0, m_fYReverseOffsetPixels );
-		const float fZ = ArrowEffects::GetZPos( m_pPlayerState, c, 0 );
-		m_ReceptorArrow[c]->SetX( fX + spline_pos[0] );
-		m_ReceptorArrow[c]->SetY( fY + spline_pos[1] );
-		m_ReceptorArrow[c]->SetZ( fZ + spline_pos[2] );
-
-		const float fRotation = ArrowEffects::ReceptorGetRotationZ( m_pPlayerState );
-		m_ReceptorArrow[c]->SetRotationZ( fRotation );
-
-		const float fZoom = ArrowEffects::GetZoom( m_pPlayerState );
-		m_ReceptorArrow[c]->SetZoom( fZoom );
 	}
 }