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#include "balls.h"
void
drawbg(Image *walls, Image *bg) {
draw(screen, screen->r, walls, nil, ZP);
draw(screen, screen->r, bg, nil, ZP);
flushimage(display, Refnone);
}
Image *
alloccircle(int fg, int bg, uint radius) {
Image *m, *fill;
uint d;
d = 2*radius; /* diameter */
printf("alloccircle: d=%u\n", d);
m = allocimage(display, Rect(0, 0, d, d), RGBA32, 0, bg);
if (m == nil)
return nil;
fill = allocimage(display, Rect(0, 0, 1, 1), RGBA32, 1, fg);
if (fill == nil) {
free(m);
return nil;
}
fillellipse(m, Pt(radius, radius), radius, radius, fill, ZP);
freeimage(fill);
return m;
}
void
drawcircle(Image *m, Point pos) {
uint radius;
Rectangle r;
radius = Dx(m->r)/2;
r = Rpt(subpt(pos, Pt(radius, radius)), addpt(pos, Pt(radius, radius)));
draw(screen, r, m, nil, ZP);
}
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