LogalDeveloper/Minecraft-Overviewer
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initial support for map overlays

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This commit is contained in:
Aaron Griffith
2011-03-28 02:50:36 -04:00
parent 4977ae8767
commit 9f69f099ad
13 changed files with 216 additions and 79 deletions
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10
src/composite.c
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@@ -273,7 +273,8 @@ alpha_over_wrap(PyObject *self, PyObject *args)
* also, it multiplies instead of doing an over operation
*/
PyObject *
tint_with_mask(PyObject *dest, unsigned char sr, unsigned char sg, unsigned char sb,
tint_with_mask(PyObject *dest, unsigned char sr, unsigned char sg,
unsigned char sb, unsigned char sa,
PyObject *mask, int dx, int dy, int xsize, int ysize) {
/* libImaging handles */
Imaging imDest, imMask;
@@ -332,9 +333,11 @@ tint_with_mask(PyObject *dest, unsigned char sr, unsigned char sg, unsigned char
out++;
*out = MULDIV255(*out, sb, tmp1);
out++;
*out = MULDIV255(*out, sa, tmp1);
out++;
} else if (*inmask == 0) {
/* do nothing -- source is fully transparent */
out += 3;
out += 4;
} else {
/* general case */
@@ -345,9 +348,10 @@ tint_with_mask(PyObject *dest, unsigned char sr, unsigned char sg, unsigned char
out++;
*out = MULDIV255(*out, (255 - *inmask) + MULDIV255(sb, *inmask, tmp1), tmp2);
out++;
*out = MULDIV255(*out, (255 - *inmask) + MULDIV255(sa, *inmask, tmp1), tmp2);
out++;
}
out++;
inmask += mask_stride;
}
}