Lines Matching refs:y0
243 int x0, y0, x2, y2, r; in drawarc() local
246 y0 = vpos + dy1; in drawarc()
248 y2 = y0 + dy2; in drawarc()
250 conicarc(x0, -y0, hpos, -vpos, x2, -y2, r, r); in drawarc()
272 conicarc(int x, int y, int x0, int y0, int x1, int y1, int a, int b) in conicarc() argument
304 radius = sqrt((float)(sqr(x0 - x) + sqr(y0 - y))); in conicarc()
309 yc = y0; in conicarc()
315 slope = atan2((double)(y0 - y), (double)(x0 - x) ); in conicarc()
319 y0 = y + radius * sin(slope) + 0.5; in conicarc()
327 ys = y0 - y; in conicarc()