cudoku/zephr_math.h

#pragma once

typedef struct {
    float m[4][4];
} Matrix4x4;

typedef struct Size {
  int width;
  int height;
} Size;

typedef struct Sizef {
  float width;
  float height;
} Sizef;

typedef struct Vec2 {
  int x;
  int y;
} Vec2;

typedef struct Vec2f {
  float x;
  float y;
} Vec2f;

typedef struct Vec4f {
  float x;
  float y;
  float z;
  float w;
} Vec4f;

typedef struct Color {
  float r;
  float g;
  float b;
  float a;
} Color;

float to_radians(float degrees);
Matrix4x4 identity();
void mult_4x4(Matrix4x4 *multiplicant, Matrix4x4 *multiplier);
void apply_scale(Matrix4x4 *matrix, Sizef scale);
void apply_rotation(Matrix4x4 *model, float angle);
void apply_translation(Matrix4x4 *matrix, Vec2f pos);
Matrix4x4 orthographic_projection_2d(float left, float right, float bottom, float top);