export tree functions to a class

inc/Math.hpp

@@ -0,0 +1,12 @@
+#include "raylib.h"
+#include "raymath.h"
+
+Color ColorLerp(Color c1, Color c2, float amount)
+{
+  Color ret{0};
+  ret.r = Clamp(Lerp(c1.r, c2.r, amount), 0, 255);
+  ret.g = Clamp(Lerp(c1.g, c2.g, amount), 0, 255);
+  ret.b = Clamp(Lerp(c1.b, c2.b, amount), 0, 255);
+  ret.a = Clamp(Lerp(c1.a, c2.a, amount), 0, 255);
+  return ret;
+}

inc/Tree.hpp

@@ -0,0 +1,43 @@
+
+#include "raylib.h";
+#include <cstdint>
+#include <vector>
+#include <list>
+
+#define MAX_DEPTH 11
+
+struct branch
+{
+  Color color;
+  uint8_t numOfBranches;
+  float lenghthRatio;
+};
+
+struct draw_args
+{
+  Vector2 start;
+  float angleDeg;
+  float lenghth;
+  int dep;
+};
+
+class Tree
+{
+
+public:
+  Tree(int size);
+  ~Tree();
+  void Draw(Rectangle dest);
+  void new_tree();
+  void generate_tree();
+  void draw_tree(draw_args first);
+  void draw_branch(draw_args arg);
+  Vector2 draw_line(Vector2 start, float angleDeg, float lenghth, int dep);
+
+private:
+  int size = 0;
+  RenderTexture2D target = {0};
+  Vector2 start = {0};
+  std::vector<branch> tree;
+  std::list<draw_args> draw_calls;
+};