#pragma once

// ============================================================================
// camera.h - 摄像机
// ============================================================================

#include "../include/engine_api.h"
#include "../ASM/math_c_fallback.h"

typedef enum {
    CAMERA_PERSPECTIVE,
    CAMERA_ORTHOGRAPHIC,
} CameraType;

typedef struct {
    CameraType type;
    Vec3 position;
    Vec3 target;
    Vec3 up;
    float fov_y;
    float aspect;
    float near_z;
    float far_z;
    float ortho_width;
    float ortho_height;
    Mat4 view;
    Mat4 projection;
    int dirty;
} Camera;

// 创建默认透视摄像机
Camera camera_perspective(float fov_y, float aspect, float near_z, float far_z);

// 创建正交摄像机
Camera camera_orthographic(float width, float height, float near_z, float far_z);

// 更新矩阵
void camera_update(Camera* camera);

// 获取矩阵
const Mat4* camera_get_view(Camera* camera);
const Mat4* camera_get_projection(Camera* camera);

// 移动
void camera_move_forward(Camera* camera, float distance);
void camera_move_right(Camera* camera, float distance);
void camera_move_up(Camera* camera, float distance);

// 旋转
void camera_rotate_yaw(Camera* camera, float angle);
void camera_rotate_pitch(Camera* camera, float angle);

// 设置目标
void camera_look_at(Camera* camera, Vec3 target);