#ifndef CAMERA_H

#include "engine.h"
#include "point.h"
#include "util.h"
#include <cmath>


// STRUCTURE
struct Camera
{
    inline Camera(void)
    {
        position.x = 0.0f;
        position.y = 0.0f;
        position.z = 0.0f;

        rotation.x = 0.0f;
        rotation.y = 0.0f;
        rotation.z = 0.0f;

        zClipBias0 =
            (CAMERA_FAR_CLIP + CAMERA_NEAR_CLIP)
            / (CAMERA_FAR_CLIP - CAMERA_NEAR_CLIP);

        zClipBias1 =
            (-2.0f * CAMERA_FAR_CLIP * CAMERA_NEAR_CLIP)
            / (CAMERA_FAR_CLIP - CAMERA_NEAR_CLIP);

        xZoom = 1.0f / tanf(DEG_TO_RAD(CAMERA_FOV/2.0f));
        yZoom = (xZoom * WINDOW_WIDTH) / WINDOW_HEIGHT;

        xScale = (0.5f * WINDOW_WIDTH) - 0.5f;
        yScale = (0.5f * WINDOW_HEIGHT) - 0.5f;
    }

    Point position;
    Point rotation;
    float zClipBias0, zClipBias1;
    float xZoom, yZoom;
    float xScale, yScale;
};


#define CAMERA_H
#endif