Switching SceneItems to smarts

archive/animation/easing.cpp

@@ -0,0 +1,66 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "easing.hpp"
+
+float_t easeTimeToEase(
+  const float_t start,
+  const float_t current,
+  const float_t duration
+) {
+  return (current - start) / duration;
+}
+
+float_t easeLinear(const float_t t) {
+  return t;
+}
+
+float_t easeInQuad(const float_t t) {
+  return t * t;
+}
+
+float_t easeOutQuad(const float_t t) {
+  return t * (2 - t);
+}
+
+float_t easeOutCubic(const float_t t) {
+  return 1 - powf(1 - t, 3);
+}
+
+float_t easeInOutQuad(const float_t t) {
+  return t < .5 ? 2 * t * t : -1 + (4 - 2 * t) * t;
+}
+
+float_t easeInCubic(const float_t t) {
+  return t * t * t;
+}
+
+float_t easeInOutCubic(const float_t t) {
+  return t < .5 ? 4 * t * t * t : (t - 1) * (2 * t - 2) * (2 * t - 2) + 1;
+}
+
+float_t easeInQuart(const float_t t) {
+  return t * t * t * t;
+}
+
+float_t easeOutQuart(const float_t t) {
+  return 1 - (t-1)*(t-1)*(t-1)*(t-1);
+}
+
+float_t easeInOutQuart(const float_t t) {
+  return t < .5 ? 8*t*t*t*t : 1-8*(t-1)*(t-1)*(t-1)*(t-1);
+}
+
+float_t easeInQuint(const float_t t) {
+  return t*t*t*t*t;
+}
+
+float_t easeOutQuint(const float_t t) {
+  return 1 + (t-1)*(t-1)*(t-1)*(t-1)*(t-1);
+}
+
+float_t easeInOutQuint(const float_t t) {
+  return t<.5 ? 16*t*t*t*t*t : 1+16*(t-1)*(t-1)*(t-1)*(t-1)*(t-1);
+}