#pragma once

#include "core/effect.hpp"

namespace effector {

// Tears its input apart: random bands of rows (or columns) are pushed sideways by a
// random distance each, the way a video signal loses its sync.
// A pure transform: it needs no source images, and leading a chain with
// sources loaded it starts from a crop of a randomly chosen one.
class SlitShiftEffect : public Effect {
public:
    std::string name() const override { return "slitshift"; }
    std::string title() const override { return "Slit shift"; }
    std::string description() const override {
        return "Tears random bands of its input sideways, like a video signal losing sync; "
               "overlapping bands add their shifts up.";
    }
    const std::vector<ParamSpec>& params() const override;
    bool needsSources() const override { return false; }

    Image render(const std::vector<Image>& sources, int width, int height, Rng& rng,
                 const ParamValues& values) const override;
};

}  // namespace effector