working rotation and zoom. pan bad

inc/util.hpp

@@ -5,45 +5,9 @@
 template<class T> struct array {
     T* data;
     size_t len;
-    T& operator[](int i);
+    inline T& operator[](int i) { return data[i]; }
 };
 
 typedef unsigned int uint;
 
 bool read_file(array<char>* out, const char* filepath);
-
-struct vec4 {
-    float x;
-    float y;
-    float z;
-    float w;
-};
-
-struct vec3 {
-    float x;
-    float y;
-    float z;
-};
-
-struct vec2 {
-    float x;
-    float y;
-};
-
-struct vec4i {
-    int x;
-    int y;
-    int z;
-    int w;
-};
-
-struct vec3i {
-    int x;
-    int y;
-    int z;
-};
-
-struct vec2i {
-    int x;
-    int y;
-};