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simplify algebraically; nudge both cases to look the same

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Glenn Maynard
2005-09-26 21:03:09 +00:00
parent 9110303bff
commit 5ca840d259
1 changed files with 10 additions and 10 deletions
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stepmania/src/ActorScroller.cpp
+10 -10
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@@ -213,24 +213,24 @@ void ActorScroller::PositionItemsAndDrawPrimitives( bool bDrawPrimitives )
if( !m_quadMask.GetHidden() )
{
// write to z buffer so that top and bottom are clipped
float fPositionFullyOnScreenTop = -(m_fNumItemsToDraw-1)/2.f;
float fPositionFullyOnScreenBottom = (m_fNumItemsToDraw-1)/2.f;
float fPositionFullyOffScreenTop = fPositionFullyOnScreenTop - 1;
float fPositionFullyOffScreenBottom = fPositionFullyOnScreenBottom + 1;
// Draw an extra item; this is the one that will be masked.
float fNumItemsToDraw = m_fNumItemsToDraw+1;
float fPositionFullyOnScreenTop = -(fNumItemsToDraw)/2.f;
float fPositionFullyOnScreenBottom = (fNumItemsToDraw)/2.f;
m_exprTransformFunction.PositionItem( &m_quadMask, fPositionFullyOffScreenTop, -1, m_SubActors.size() );
m_exprTransformFunction.PositionItem( &m_quadMask, fPositionFullyOnScreenTop, -1, m_SubActors.size() );
if( bDrawPrimitives ) m_quadMask.Draw();
m_exprTransformFunction.PositionItem( &m_quadMask, fPositionFullyOffScreenBottom, m_SubActors.size(), m_SubActors.size() );
m_exprTransformFunction.PositionItem( &m_quadMask, fPositionFullyOnScreenBottom, m_SubActors.size(), m_SubActors.size() );
if( bDrawPrimitives ) m_quadMask.Draw();
fFirstItemToDraw = fPositionFullyOffScreenTop + m_fCurrentItem;
fLastItemToDraw = fPositionFullyOffScreenBottom + m_fCurrentItem;
fFirstItemToDraw = m_fCurrentItem - fNumItemsToDraw/2.f;
fLastItemToDraw = m_fCurrentItem + fNumItemsToDraw/2.f;
}
else
{
fFirstItemToDraw = m_fCurrentItem - (m_fNumItemsToDraw)/2.f;
fLastItemToDraw = m_fCurrentItem + (m_fNumItemsToDraw)/2.f;
fFirstItemToDraw = m_fCurrentItem - m_fNumItemsToDraw/2.f;
fLastItemToDraw = m_fCurrentItem + m_fNumItemsToDraw/2.f;
}
bool bDelayedDraw = m_bDrawByZPosition && !m_bLoop;