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OrbWorks Community Forum • View topic - how to save a part of the graphics ?
Page 1 of 1

PostPosted: Fri Mar 02, 2001 6:34 am
by croizetf
hello,

I am newbye in pocketc developping and I am wondering how to save and restore a small region of the graphic screen (idem as saveg and restoreg but only for some rect area of the graphic screen).

I had a look to PocketC toolbox but I am not really sure how to do that with this.

Any help or piece of code would be appreciated.

regards

Francois Croizet

(France)

PostPosted: Tue Mar 06, 2001 6:40 pm
by jstadolnik
Here's a program showing how to do it, as well as how to rotate and enlarge an image.

Joe

-------

//copyrect.c
library "PToolboxLib"
main() {

graph_on();
ClearBuf();
CustomBuf(1,20,20); //create a 20 by 20 scratch buffer

line(1,0,0,159,160);
line(1,0,159,159,0);
line(1,0,75,159,75);

//Copy screen center to custom buffer
SetDrawBuf(1);
CopyRect(0,0,0,70,70,20,20,0,0,0);
SetDrawBuf(0);

//Can use next line instead of 3 lines above
//CopyRect(0,0,0,70,70,20,20,0,1,-1);

//Copy buffer to top of display
CopyRect(1,70,0,0,0,20,20,0,0,0);

//Copy & rotate buffer to left corner
CopyRect(1,0,140,0,0,20,20,0,0,1);

//Copy & zoomX2 buffer to right corner
CopyRect(1,120,120,0,0,20,20,0,2,0);

event(1);
}