#pragma once typedef struct { float m[4][4]; } Matrix4x4; Matrix4x4 identity(); void mult_4x4(Matrix4x4 *multiplicant, Matrix4x4 *multiplier); void apply_rotation(Matrix4x4 *model, float angle); Matrix4x4 orthographic_projection_2d(float left, float right, float bottom, float top); int max(int a, int b); float maxf(float a, float b); float clampf(float value, float min, float max); float to_radians(float degrees);