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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
void
rtgrpblib_draw_circular_arc(RASTER *restrict raster, double x0, double y0,
double semiwidth, double semiheight, double start, double end)
{
double inc, v, x, y, prevX, prevY;
if (start == end)
return;
/* TODO precalculate intersection with raster box */
inc = fmax(semiwidth, semiheight);
inc *= 2 * M_PI;
inc *= end - start;
inc = raster->draftness / inc;
v = start;
prevX = x0 + semiwidth * cos(start);
prevY = y0 + semiheight * sin(start);
for (; (v += inc) < end; prevX = x, prevY = y) {
x = x0 + semiwidth * cos(v);
y = y0 + semiheight * sin(v);
rtgrpblib_draw_linear_bezier(raster, prevX, prevY, x, y);
}
x = x0 + semiwidth * cos(end);
y = y0 + semiheight * sin(end);
rtgrpblib_draw_linear_bezier(raster, prevX, prevY, x, y);
}
#else
int
main(void)
{
return 0; /* TODO add test */
}
#endif
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