#pragma once

#include "core/effect.hpp"

namespace effector {

// Pushes every pixel along a smooth random noise field: a haze at low strength,
// melted paint at high. The swirl mode follows the field's contour lines,
// which turns the image into eddies instead of ripples.
// 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 WarpEffect : public Effect {
public:
    std::string name() const override { return "warp"; }
    std::string title() const override { return "Warp"; }
    std::string description() const override {
        return "Pushes every pixel along a smooth random noise field, from a gentle haze to "
               "molten eddies.";
    }
    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