diff --git a/src/lib/ecore/ecore_anim.c b/src/lib/ecore/ecore_anim.c index 3aa1a6850d..3b8f98713d 100644 --- a/src/lib/ecore/ecore_anim.c +++ b/src/lib/ecore/ecore_anim.c @@ -317,15 +317,9 @@ _pos_map_cubic_bezier(double pos, if (x1 == y1 && x2 == y2) return pos; /* Bezier Cubic formula: - y(t) = (1 - t)^3 + 3t(1 - t)^2 + 3t^2(1 - t) + t^3 */ - - /* orignal */ - // return (pow((1 - pos), 3) * 0) + (3 * pos * pow((1 - pos), 2) * y1) + - // (3 * pow(pos, 2) * (1 - pos) * y2) + (pow(pos, 3) * 1); - - /* simpler one */ - return (3 * pos * pow((1 - pos), 2) * y1) + - (3 * pow(pos, 2) * (1 - pos) * y2) + (pow(pos, 3) * 1); + y(t) = (1 - t)^3 + 3t(1 - t)^2 + 3t^2(1 - t) + t^3 */ + return (pow((1 - pos), 3) * 0) + (3 * pos * pow((1 - pos), 2) * y1) + + (3 * pow(pos, 2) * (1 - pos) * y2) + (pow(pos, 3) * 1); } #define DBL_TO(Fp) eina_f32p32_double_to(Fp)