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99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
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/* If you are missing that file, acquire a complete release at teeworlds.com. */
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#include <base/system.h>
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#include <engine/external/pnglite/pnglite.h>
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typedef struct
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{
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unsigned char r, g, b, a;
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} CPixel;
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static CPixel Sample(int x, int y, int w, int h, CPixel *pData, int Pitch, float u, float v)
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{
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x = x + (int)(w*u);
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y = y + (int)(h*v);
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return pData[y*Pitch+x];
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}
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static void TilesetBorderfix(int w, int h, CPixel *pSrc, CPixel *pDest)
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{
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int TileW = w/16;
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int TileH = h/16;
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mem_zero(pDest, sizeof(CPixel)*w*h);
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for(int ty = 0; ty < 16; ty++)
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{
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for(int tx = 0; tx < 16; tx++)
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{
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for(int y = 0; y < TileH-2; y++)
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{
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for(int x = 0; x < TileW-2; x++)
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{
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float u = 0.5f/TileW + x/(float)(TileW-2);
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float v = 0.5f/TileH + y/(float)(TileH-2);
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int k = (ty*TileH+1+y)*w + tx*TileW+x+1;
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pDest[k] = Sample(tx*TileW, ty*TileH, TileW, TileH, pSrc, w, u, v);
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if(x == 0) pDest[k-1] = pDest[k];
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if(x == TileW-2-1) pDest[k+1] = pDest[k];
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if(y == 0) pDest[k-w] = pDest[k];
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if(y == TileH-2-1) pDest[k+w] = pDest[k];
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if(x == 0 && y == 0) pDest[k-w-1] = pDest[k];
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if(x == TileW-2-1 && y == 0) pDest[k-w+1] = pDest[k];
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if(x == 0 && y == TileH-2-1) pDest[k+w-1] = pDest[k];
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if(x == TileW-2-1 && y == TileH-2-1) pDest[k+w+1] = pDest[k];
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}
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}
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}
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}
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}
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int FixFile(const char *pFileName)
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{
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png_t Png;
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CPixel *pBuffer[2] = {0,0};
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png_init(0, 0);
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png_open_file(&Png, pFileName);
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if(Png.color_type != PNG_TRUECOLOR_ALPHA)
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{
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dbg_msg("tileset_borderfix", "%s: not an RGBA image", pFileName);
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return 1;
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}
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int w = Png.width;
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int h = Png.height;
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pBuffer[0] = (CPixel*)mem_alloc(w*h*sizeof(CPixel), 1);
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pBuffer[1] = (CPixel*)mem_alloc(w*h*sizeof(CPixel), 1);
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png_get_data(&Png, (unsigned char *)pBuffer[0]);
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png_close_file(&Png);
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TilesetBorderfix(w, h, pBuffer[0], pBuffer[1]);
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// save here
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png_open_file_write(&Png, pFileName);
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png_set_data(&Png, w, h, 8, PNG_TRUECOLOR_ALPHA, (unsigned char *)pBuffer[1]);
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png_close_file(&Png);
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return 0;
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}
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int main(int argc, const char **argv)
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{
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dbg_logger_stdout();
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if(argc == 1)
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{
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dbg_msg("usage", "%s FILE1 [ FILE2... ]", argv[0]);
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return -1;
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}
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for(int i = 1; i < argc; i++)
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FixFile(argv[i]);
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return 0;
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}
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