Lines Matching refs:vec_estart
509 U_PAIRF vec_estart; // define a unit vector from the center to estart
525 vec_estart.x = (estart.x - center->x); // initial vector, not unit length
526 vec_estart.y = (estart.y - center->y);
527 scale = sqrt(vec_estart.x*vec_estart.x + vec_estart.y*vec_estart.y);
529 vec_estart.x /= scale; // now a unit vector
530 vec_estart.y /= scale;
548 ratio.x = vec_estart.x/radii.x;
549 ratio.y = vec_estart.y/radii.y;
553 start->x = center->x + scale * vec_estart.x;
554 start->y = center->y + scale * vec_estart.y;
567 cross = vec_estart.x * vec_eend.y - vec_estart.y * vec_eend.x;