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 * @param putpixel Putpixel function used to print bitmap
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 * @param putpixel Putpixel function used to print bitmap
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 */
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 */
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int ppm_draw(unsigned char *data, size_t datasz, unsigned int sx,
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int ppm_draw(unsigned char *data, size_t datasz, unsigned int sx,
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         unsigned int sy,
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         unsigned int sy,
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         unsigned int maxwidth, unsigned int maxheight,
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         unsigned int maxwidth, unsigned int maxheight,
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         void (*putpixel)(int,unsigned int, unsigned int, int),int vp)
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         putpixel_cb_t putpixel,void *vport)
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{
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{
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    unsigned int width, height;
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    unsigned int width, height;
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    unsigned int maxcolor;
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    unsigned int maxcolor;
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    int i;
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    int i;
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    void *maxdatap = data + datasz;
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    void *maxdatap = data + datasz;
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            data += 3;
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            data += 3;
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            continue;
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            continue;
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        }
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        }
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        color = ((data[0]*coef) << 16) + ((data[1]*coef) << 8) + data[2]*coef;
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        color = ((data[0]*coef) << 16) + ((data[1]*coef) << 8) + data[2]*coef;
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        (*putpixel)(vp, sx+(i % width), sy+(i / width), color);
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        (*putpixel)(vport, sx+(i % width), sy+(i / width), color);
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        data += 3;
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        data += 3;
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    }
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    }
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}
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}