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split out GetCenteringMatrix

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Glenn Maynard
2006-03-26 21:59:29 +00:00
parent 6d115f5b55
commit 7b17d06133
2 changed files with 14 additions and 6 deletions
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stepmania/src/RageDisplay.cpp
+13 -6
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@@ -613,15 +613,15 @@ void RageDisplay::ChangeCentering( int iTranslateX, int iTranslateY, int iAddWid
UpdateCentering();
}
void RageDisplay::UpdateCentering()
RageMatrix RageDisplay::GetCenteringMatrix( float fTranslateX, float fTranslateY, float fAddWidth, float fAddHeight ) const
{
// in screen space, left edge = -1, right edge = 1, bottom edge = -1. top edge = 1
float fWidth = (float) GetActualVideoModeParams().width;
float fHeight = (float) GetActualVideoModeParams().height;
float fPercentShiftX = SCALE( g_iTranslateX, 0, fWidth, 0, +2.0f );
float fPercentShiftY = SCALE( g_iTranslateY, 0, fHeight, 0, -2.0f );
float fPercentScaleX = SCALE( g_iAddWidth, 0, fWidth, 1.0f, 2.0f );
float fPercentScaleY = SCALE( g_iAddHeight, 0, fHeight, 1.0f, 2.0f );
float fPercentShiftX = SCALE( fTranslateX, 0, fWidth, 0, +2.0f );
float fPercentShiftY = SCALE( fTranslateY, 0, fHeight, 0, -2.0f );
float fPercentScaleX = SCALE( fAddWidth, 0, fWidth, 1.0f, 2.0f );
float fPercentScaleY = SCALE( fAddHeight, 0, fHeight, 1.0f, 2.0f );
RageMatrix m1;
RageMatrix m2;
@@ -635,7 +635,14 @@ void RageDisplay::UpdateCentering()
fPercentScaleX,
fPercentScaleY,
1 );
RageMatrixMultiply( &m_Centering, &m1, &m2 );
RageMatrix mOut;
RageMatrixMultiply( &mOut, &m1, &m2 );
return mOut;
}
void RageDisplay::UpdateCentering()
{
m_Centering = GetCenteringMatrix( (float) g_iTranslateX, (float) g_iTranslateY, (float) g_iAddWidth, (float) g_iAddHeight );
}
bool RageDisplay::SaveScreenshot( RString sPath, GraphicsFileFormat format )