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added RCopyArea

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This commit is contained in:
kojima
2004-10-24 05:01:55 +00:00
parent 4638216209
commit 363b6032f5
2 changed files with 75 additions and 0 deletions
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72
wrlib/raster.c
View File

@@ -384,6 +384,78 @@ RCombineArea(RImage *image, RImage *src, int sx, int sy, unsigned width,
}
void
RCopyArea(RImage *image, RImage *src, int sx, int sy, unsigned width,
unsigned height, int dx, int dy)
{
int x, y, dwi, swi;
unsigned char *d;
unsigned char *s;
if(!calculateCombineArea(image, src, &sx, &sy, &width, &height, &dx, &dy))
return;
if (!HAS_ALPHA(src)) {
if (!HAS_ALPHA(image)) {
swi = src->width * 3;
dwi = image->width * 3;
s = src->data + (sy*(int)src->width + sx) * 3;
d = image->data + (dy*(int)image->width + dx) * 3;
for (y=0; y < height; y++) {
memcpy(d, s, width*3);
d += dwi;
s += swi;
}
} else {
swi = (src->width - width) * 3;
dwi = (image->width - width) * 4;
s = src->data + (sy*(int)src->width + sx) * 3;
d = image->data + (dy*(int)image->width + dx) * 4;
for (y=0; y < height; y++) {
for (x=0; x < width; x++) {
*d++ = *s++;
*d++ = *s++;
*d++ = *s++;
d++;
}
d += dwi;
s += swi;
}
}
} else {
int dalpha = HAS_ALPHA(image);
swi = src->width * 4;
s = src->data + (sy*(int)src->width + sx) * 4;
if (dalpha) {
dwi = image->width * 4;
d = image->data + (dy*(int)image->width + dx) * 4;
} else {
dwi = image->width * 3;
d = image->data + (dy*(int)image->width + dx) * 3;
}
if (dalpha) {
for (y=0; y < height; y++) {
memcpy(d, s, width*4);
d += dwi;
s += swi;
}
} else {
for (y=0; y < height; y++) {
memcpy(d, s, width*3);
d += dwi;
s += swi;
}
}
}
}
void
RCombineAreaWithOpaqueness(RImage *image, RImage *src, int sx, int sy,
unsigned width, unsigned height, int dx, int dy,

3
wrlib/wraster.h
View File

@@ -347,6 +347,9 @@ void RCombineImages(RImage *image, RImage *src);
void RCombineArea(RImage *image, RImage *src, int sx, int sy, unsigned width,
unsigned height, int dx, int dy);
void RCopyArea(RImage *image, RImage *src, int sx, int sy, unsigned width,
unsigned height, int dx, int dy);
void RCombineImagesWithOpaqueness(RImage *image, RImage *src, int opaqueness);
void RCombineAreaWithOpaqueness(RImage *image, RImage *src, int sx, int sy,