Canvas.h

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#pragma once
 
#include "graphics/Color.h"
#include "graphics/Drawable.h"
 
#include <optional>
 
namespace eve::image {
class ImageData;
}
 
namespace eve::graphics {
 
class Texture;
 
class Canvas : public Drawable {
public:
    // Canvas adds a canvas-to-canvas composite overload; keep the base
    // Drawable::draw(Graphics*, mat4) visible (it is overridden by the
    // concrete canvas implementations).
    using Drawable::draw;
 
    Canvas() {}
    ~Canvas() override {}
 
    virtual int getWidth() const = 0;
    virtual int getHeight() const = 0;
 
    virtual Texture *getTexture() = 0;
 
    virtual void clear(std::optional<Color> color, std::optional<int> stencil,
                       std::optional<double> depth) = 0;
 
    virtual Color getPixel(int x, int y) = 0;
 
    virtual image::ImageData *newImageData() = 0;
 
    virtual image::ImageData *newHDRImageData() { return nullptr; }
 
    virtual void draw(Canvas *C, const glm::mat4 &matrix) const = 0;
};
 
}  // namespace eve::graphics