camera.hpp

#pragma once

#include "scene/entity.hpp"
#include "core/image.hpp"
#include "ray.hpp"

namespace rt{
class Camera : public Entity{
public:
    Camera(const vector & position, const vector & target, const vector & up, double near = 3.0);

    enum RenderQuality{
        FastRender = 0, 
        RenderLights = 1, 
        RenderAmbientOcclusion = 2, 
        FullRender = 3 
    };

    const vector & target() const;
    void setTarget(const vector & target);

    virtual void render(image & img, int flags = FullRender) const;

protected:
    ray project(int ix, int iy, int width, int height) const;

private:
    vector _target;
    vector _up;
    double _near;
};

}