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Added new function to tile the contents of a GWorld. It is overloaded, with one version tiling the entire source GWorld, and the other taking a Rect which specifies a portion of the source GWorld to use when tiling. Both versions take a Rect to define the area to tile within, and an optional mode parameter which can be used to set the mode used for CopyBits.

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git-svn-id: http://openexile.googlecode.com/svn/trunk@89 4ebdad44-0ea0-11de-aab3-ff745001d230
This commit is contained in:
Niemand
2009-06-05 05:06:15 +00:00
parent c958e5b01c
commit 91f5435b9d
2 changed files with 55 additions and 0 deletions
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52
osx/boe.graphics.cpp
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@@ -2929,3 +2929,55 @@ void HideShowMenuBar( )
}
*/
void tileImage(Rect area, GWorldPtr img, short mode){
RgnHandle clip= NewRgn();
RectRgn(clip,&area);
GrafPtr cur_port;
GetPort(&cur_port);
const BitMap* drawDest = GetPortBitMapForCopyBits(cur_port);
PixMapHandle drawSource = GetPortPixMap(img);
Rect imgRect;
GetPortBounds(img, &imgRect);
int imgWidth=imgRect.right-imgRect.left;
int imgHeight=imgRect.bottom-imgRect.top;
int x,y;
unsigned int hrep = (int)((double(area.right-area.left)/imgWidth)+0.5);
unsigned int vrep = (int)((double(area.bottom-area.top)/imgHeight)+0.5);
for(unsigned int i=0; i<vrep; i++){
for(unsigned int j=0; j<hrep; j++){
x=area.left+i*imgWidth;
y=area.top+j*imgHeight;
Rect targetRect={y,x,y+imgHeight,x+imgWidth};
CopyBits((BitMap*)*drawSource, drawDest,&imgRect,&targetRect,mode,clip);
}
}
DisposeRgn(clip);
}
void tileImage(Rect area, GWorldPtr img, Rect srcRect, short mode){
RgnHandle clip= NewRgn();
RectRgn(clip,&area);
GrafPtr cur_port;
GetPort(&cur_port);
const BitMap* drawDest = GetPortBitMapForCopyBits(cur_port);
PixMapHandle drawSource = GetPortPixMap(img);
int srcWidth=srcRect.right-srcRect.left;
int srcHeight=srcRect.bottom-srcRect.top;
int x,y;
unsigned int hrep = (int)((double(area.right-area.left)/srcWidth)+0.5);
unsigned int vrep = (int)((double(area.bottom-area.top)/srcHeight)+0.5);
for(unsigned int i=0; i<vrep; i++){
for(unsigned int j=0; j<hrep; j++){
x=area.left+i*srcWidth;
y=area.top+j*srcHeight;
Rect targetRect={y,x,y+srcHeight,x+srcWidth};
CopyBits((BitMap*)*drawSource, drawDest,&srcRect,&targetRect,mode,clip);
}
}
DisposeRgn(clip);
}