Add easing functions

engine/tests/CMakeLists.txt

@@ -22,3 +22,6 @@ target_link_libraries(pan_test LINK_PRIVATE Breeze)
 
 add_executable(ui_test ui_test.c)
 target_link_libraries(ui_test LINK_PRIVATE Breeze)
+
+add_executable(ease_test ease_test.c)
+target_link_libraries(ease_test LINK_PRIVATE Breeze)

engine/tests/ease_test.c

@@ -0,0 +1,59 @@
+#define BZ_ENTRYPOINT
+#include <breeze.h>
+
+#include <raylib.h>
+#include <rlImGui.h>
+
+bool init(int *game) {
+    rlImGuiSetup(true);
+
+    return true;
+}
+
+void render(float dt, int *game) {
+
+    static f32 x = 0;
+
+    x += dt * 2;
+
+    //f32 eased = bzEase(BZ_EASE_INOUT_SINE, x);
+    f32 eased = bzEase(BZ_EASE_OUT_ELASTIC, x);
+
+    Rectangle rect = {
+            500, 500, 200, 400
+    };
+    Vector2 origin = {rect.width * 0.5f, rect.height};
+
+    BeginDrawing();
+    ClearBackground(WHITE);
+
+    f32 rotation = 45 * (1 - eased);
+    DrawRectanglePro(rect, origin, rotation, RED);
+
+
+    if (IsKeyReleased(KEY_SPACE)) {
+        x = 0.0f;
+    }
+
+
+    rlImGuiBegin();
+
+    igBegin("Easing", NULL, 0);
+    igText("x: %.2f", x);
+    igText("eased: %.2f", eased);
+    igText("rotation: %.2f", rotation);
+    if (igSmallButton("Reset")) {
+        x = 0.0f;
+    }
+    igEnd();
+
+    rlImGuiEnd();
+    EndDrawing();
+}
+
+bool bzMain(BzAppDesc *appDesc, int argc, const char **argv) {
+    appDesc->init = (BzAppInitFunc) init;
+    appDesc->render = (BzAppRenderFunc) render;
+
+    return true;
+}