diff options
Diffstat (limited to 'gentpl')
| -rw-r--r-- | gentpl/gentpl.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/gentpl/gentpl.c b/gentpl/gentpl.c index 35b8a35..5f04d54 100644 --- a/gentpl/gentpl.c +++ b/gentpl/gentpl.c @@ -31,10 +31,12 @@ int main(int argc, char **argv) { } im = gdImageCreateFromPng(in); fclose(in); - - if(gdImageSX(im) % 4 != 0 || gdImageSY(im) % 4 != 0) { - printf("Bad dimensions\n"); - exit(1); + + int width = gdImageSX(im); + int height = gdImageSY(im); + + if(width % 4 != 0 || height % 4 != 0) { + printf("Warning: Dimensions (%dx%d) not multiples of 4.\n", width, height); } FILE *out = fopen(argv[2], "wb"); @@ -64,13 +66,19 @@ int main(int argc, char **argv) { for(int i = 0; i < 8; i++) fputc(0, out); - for(int y = 0; y < gdImageSY(im); y += 4) { - for(int x = 0; x < gdImageSX(im); x += 4) { + for(int y = 0; y < height; y += 4) { + for(int x = 0; x < width; x += 4) { for(int y1 = y; y1 < y + 4; y1++) { for(int x1 = x; x1 < x + 4; x1++) { - int p = gdImageGetPixel(im, x1, y1); + int p; + if(x1 >= width || y1 >= height) { + p = 0; + } else { + p = gdImageGetPixel(im, x1, y1); + } unsigned char a = 254 - 2*((unsigned char) gdImageAlpha(im, p)); if(a == 254) a++; + unsigned char r = (unsigned char) gdImageRed(im, p); unsigned char g = (unsigned char) gdImageGreen(im, p); unsigned char b = (unsigned char) gdImageBlue(im, p); |