Lines Matching defs:x0
246 int x0, y0, x2, y2, r;
248 x0 = hpos + dx1; /* center */
250 x2 = x0 + dx2; /* "to" */
253 conicarc(x0, -y0, hpos, -vpos, x2, -y2, r, r);
275 conicarc(x, y, x0, y0, x1, y1, a, b)
307 radius = sqrt((float)(sqr(x0 - x) + sqr(y0 - y)));
311 xc = x0;
318 slope = atan2((double)(y0 - y), (double)(x0 - x) );
319 if (slope == 0.0 && x0 < x)
321 x0 = x + radius * cos(slope) + 0.5;
329 xs = x0 - x;