64 lines
998 B
C++
64 lines
998 B
C++
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#include<hgl/graph/TileData.h>
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namespace hgl
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{
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namespace graph
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{
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namespace
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{
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void AnalyseSize(int &fw,int &fh,const int w,const int h,const int count,const int max_texture_size)
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{
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int total,tw,th,t;
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fw=fh=0;
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tw=max_texture_size;
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while(tw>=w)
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{
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th=max_texture_size;
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while(th>=h)
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{
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t=(tw/w)*(th/h);
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if(!fw)
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{
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fw=tw;
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fh=th;
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total=t;
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}
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else
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{
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if(t==count)
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{
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//正好，就要这么大的
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fw=tw;
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fh=th;
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return;
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}
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else
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if(t>count) //要比要求的最大值大
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{
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if(t<total) //找到最接近最大值的
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{
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//比现在选中的更节省
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fw=tw;
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fh=th;
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total=t;
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}
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}
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}
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th>>=1;
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}
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tw>>=1;
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}
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}//void AnalyseSize
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}//namespace
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}//namespace graph
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}//namespace hgl
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