Clementine-audio-player-Mac.../3rdparty/libprojectm/PipelineMerger.cpp

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2010-06-06 23:43:45 +02:00
#include "PipelineMerger.hpp"
#include "RenderItemMatcher.hpp"
#include "RenderItemMergeFunction.hpp"
const double PipelineMerger::e(2.71828182845904523536);
const double PipelineMerger::s(0.5);
void PipelineMerger::mergePipelines(const Pipeline & a, const Pipeline & b, Pipeline & out, RenderItemMatcher::MatchResults & results, RenderItemMergeFunction & mergeFunction, float ratio)
{
const double x = ( ratio - 0.5 ) * 20;
const double sigmoid = 1.0 / ( 1.0 + e - s * x );
const double invratio = 1.0 - ratio;
out.textureWrap = ( ratio < 0.5 ) ? a.textureWrap : b.textureWrap;
out.screenDecay = lerp ( b.screenDecay, a.screenDecay, ratio );
out.drawables.clear();
out.compositeDrawables.clear();
for ( std::vector<RenderItem*>::const_iterator pos = a.drawables.begin();
pos != a.drawables.end(); ++pos )
{
( *pos )->masterAlpha = invratio;
out.drawables.push_back ( *pos );
}
for ( std::vector<RenderItem*>::const_iterator pos = b.drawables.begin();
pos != b.drawables.end();++pos )
{
( *pos )->masterAlpha = ratio;
out.drawables.push_back ( *pos );
}
if(ratio < 0.5)
{
const double local_ratio = (invratio - 0.5) * 2;
for (std::vector<RenderItem*>::const_iterator pos = a.compositeDrawables.begin();
pos != a.compositeDrawables.end(); ++pos)
{
(*pos)->masterAlpha = local_ratio;
out.compositeDrawables.push_back(*pos);
}
}
else
{
const double local_ratio = (ratio - 0.5) * 2;
for (std::vector<RenderItem*>::const_iterator pos = b.compositeDrawables.begin();
pos != b.compositeDrawables.end();++pos)
{
(*pos)->masterAlpha = local_ratio;
out.compositeDrawables.push_back(*pos);
}
}
/*
for (RenderItemMatchList::iterator pos = results.matches.begin(); pos != results.matches.end(); ++pos) {
RenderItem * itemA = pos->first;
RenderItem * itemB = pos->second;
RenderItem * itemC = mergeFunction(itemA, itemB, ratio);
if (itemC == 0) {
itemA->masterAlpha = ratio;
out.drawables.push_back(itemA);
itemB->masterAlpha = invratio;
out.drawables.push_back(itemB);
} else
out.drawables.push_back(itemC);
}
for (std::vector<RenderItem*>::const_iterator pos = results.unmatchedLeft.begin();
pos != results.unmatchedLeft.end(); ++pos)
{
(*pos)->masterAlpha = invratio;
out.drawables.push_back(*pos);
}
for (std::vector<RenderItem*>::const_iterator pos = results.unmatchedRight.begin();
pos != results.unmatchedRight.end(); ++pos)
{
(*pos)->masterAlpha = ratio;
out.drawables.push_back(*pos);
}
*/
if (a.staticPerPixel && b.staticPerPixel)
{
out.staticPerPixel = true;
for (int x=0;x<a.gx;x++)
{
for(int y=0;y<a.gy;y++)
{
out.x_mesh[x][y] = a.x_mesh[x][y]* invratio + b.x_mesh[x][y]*ratio;
}
}
for (int x=0;x<a.gx;x++)
{
for(int y=0;y<a.gy;y++)
{
out.y_mesh[x][y] = a.y_mesh[x][y]* invratio + b.y_mesh[x][y]*ratio;
}
}
}
if(ratio < 0.5)
{
out.compositeShader = a.compositeShader;
out.warpShader = a.warpShader;
}
else
{
out.compositeShader = b.compositeShader;
out.warpShader = b.warpShader;
}
}