Easing functions as enum

src/PyEasing.h

@@ -0,0 +1,29 @@
+#pragma once
+#include "Common.h"
+#include "Python.h"
+#include "Animation.h"
+
+// Module-level Easing enum class (created at runtime using Python's IntEnum)
+// Stored as a module attribute: mcrfpy.Easing
+
+class PyEasing {
+public:
+    // Create the Easing enum class and add to module
+    // Returns the enum class (new reference), or NULL on error
+    static PyObject* create_enum_class(PyObject* module);
+
+    // Helper to extract easing function from Python arg
+    // Accepts Easing enum, string (for backwards compatibility), int, or None
+    // Returns 1 on success, 0 on error (with exception set)
+    // If arg is None, sets *out_func to linear and sets *was_none to true
+    static int from_arg(PyObject* arg, EasingFunction* out_func, bool* was_none = nullptr);
+
+    // Convert easing enum value to string name
+    static const char* easing_name(int value);
+
+    // Cached reference to the Easing enum class for fast type checking
+    static PyObject* easing_enum_class;
+
+    // Number of easing functions
+    static const int NUM_EASING_FUNCTIONS = 32;
+};