Lines Matching refs:dy
187 int dx, dy, incr1, incr2, D, x, y, xend, c, pixels_left; in VGLLine() local
191 dy = SL_ABSOLUTE(y2, y1, sign_y); in VGLLine()
198 if (dy > dx) { /* chooses axis of greatest movement (make dx) */ in VGLLine()
201 SL_SWAP(dx, dy); in VGLLine()
230 incr2 = 4 * dy - 2 * dx; in VGLLine()
232 c = 2 * dy; in VGLLine()
298 c = 2 * (dy - dx); in VGLLine()
407 int bsq2 = b*b*2, d = bsq-asq*b+asq/4, dx = 0, dy = asq2*b; in VGLEllipse() local
409 while (dx<dy) { in VGLEllipse()
412 y--; dy-=asq2; d-=dy; in VGLEllipse()
416 d+=(3*(asq-bsq)/2-(dx+dy))/2; in VGLEllipse()
422 y--; dy-=asq2; d+=asq-dy; in VGLEllipse()
443 int bsq2 = b*b*2, d = bsq-asq*b+asq/4, dx = 0, dy = asq2*b; in VGLFilledEllipse() local
445 while (dx<dy) { in VGLFilledEllipse()
448 y--; dy-=asq2; d-=dy; in VGLFilledEllipse()
452 d+=(3*(asq-bsq)/2-(dx+dy))/2; in VGLFilledEllipse()
458 y--; dy-=asq2; d+=asq-dy; in VGLFilledEllipse()