/* pipe the output to sort|uniq -u and you'll get the errors. */
int main(int argc, char** argv)
{
sraRegionPtr region, region1, region2;
sraRectangleIterator* i;
sraRect rect;
rfbBool b;
region = sraRgnCreateRect(10, 10, 600, 300);
region1 = sraRgnCreateRect(40, 50, 350, 200);
region2 = sraRgnCreateRect(0, 0, 20, 40);
sraRgnPrint(region);
printf("\n[(10-300)[(10-600)]]\n\n");
b = sraRgnSubtract(region, region1);
printf("%s ",b?"true":"false");
sraRgnPrint(region);
printf("\ntrue [(10-50)[(10-600)](50-200)[(10-40)(350-600)](200-300)[(10-600)]]\n\n");
sraRgnOr(region, region2);
printf("%ld\n6\n\n", sraRgnCountRects(region));
i = sraRgnGetIterator(region);
while(sraRgnIteratorNext(i, &rect))
printf("%dx%d+%d+%d ",
rect.x2-rect.x1,rect.y2-rect.y1,
rect.x1,rect.y1);
sraRgnReleaseIterator(i);
printf("\n20x10+0+0 600x30+0+10 590x10+10+40 30x150+10+50 250x150+350+50 590x100+10+200 \n\n");
i = sraRgnGetReverseIterator(region,1,0);
while(sraRgnIteratorNext(i, &rect))
printf("%dx%d+%d+%d ",
rect.x2-rect.x1,rect.y2-rect.y1,
rect.x1,rect.y1);
sraRgnReleaseIterator(i);
printf("\n20x10+0+0 600x30+0+10 590x10+10+40 250x150+350+50 30x150+10+50 590x100+10+200 \n\n");
i = sraRgnGetReverseIterator(region,1,1);
while(sraRgnIteratorNext(i, &rect))
printf("%dx%d+%d+%d ",
rect.x2-rect.x1,rect.y2-rect.y1,
rect.x1,rect.y1);
sraRgnReleaseIterator(i);
printf("\n590x100+10+200 250x150+350+50 30x150+10+50 590x10+10+40 600x30+0+10 20x10+0+0 \n\n");
sraRgnDestroy(region);
sraRgnDestroy(region1);
sraRgnDestroy(region2);
return(0);
}
void rfbDoCopyRegion(rfbScreenInfoPtr screen,sraRegionPtr copyRegion,int dx,int dy)
{
sraRectangleIterator* i;
sraRect rect;
int j,widthInBytes,bpp=screen->serverFormat.bitsPerPixel/8,
rowstride=screen->paddedWidthInBytes;
char *in,*out;
/* copy it, really */
i = sraRgnGetReverseIterator(copyRegion,dx<0,dy<0);
while(sraRgnIteratorNext(i,&rect)) {
widthInBytes = (rect.x2-rect.x1)*bpp;
out = screen->frameBuffer+rect.x1*bpp+rect.y1*rowstride;
in = screen->frameBuffer+(rect.x1-dx)*bpp+(rect.y1-dy)*rowstride;
if(dy<0)
for(j=rect.y1;j<rect.y2;j++,out+=rowstride,in+=rowstride)
memmove(out,in,widthInBytes);
else {
out += rowstride*(rect.y2-rect.y1-1);
in += rowstride*(rect.y2-rect.y1-1);
for(j=rect.y2-1;j>=rect.y1;j--,out-=rowstride,in-=rowstride)
memmove(out,in,widthInBytes);
}
}
sraRgnReleaseIterator(i);
rfbScheduleCopyRegion(screen,copyRegion,dx,dy);
}
double rect_overlap(int x1, int y1, int x2, int y2, int X1, int Y1,
int X2, int Y2) {
double a, A, o;
sraRegionPtr r, R;
sraRectangleIterator *iter;
sraRect rt;
a = nabs((x2 - x1) * (y2 - y1));
A = nabs((X2 - X1) * (Y2 - Y1));
r = sraRgnCreateRect(x1, y1, x2, y2);
R = sraRgnCreateRect(X1, Y1, X2, Y2);
sraRgnAnd(r, R);
o = 0.0;
iter = sraRgnGetIterator(r);
while (sraRgnIteratorNext(iter, &rt)) {
o += nabs( (rt.x2 - rt.x1) * (rt.y2 - rt.y1) );
}
sraRgnReleaseIterator(iter);
sraRgnDestroy(r);
sraRgnDestroy(R);
if (a < A) {
o = o/a;
} else {
o = o/A;
}
return o;
}