/*

 * Copyright 2023 Google LLC

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#ifndef SkSweepGradientShader_DEFINED

#define SkSweepGradientShader_DEFINED

#include "include/core/SkFlattenable.h"

#include "include/core/SkPoint.h"

#include "include/core/SkScalar.h"

#include "src/shaders/gradients/SkGradientBaseShader.h"

class SkArenaAlloc;

class SkMatrix;

class SkRasterPipeline;

class SkReadBuffer;

class SkWriteBuffer;

class SkSweepGradient final : public SkGradientBaseShader {

public:

    SkSweepGradient(const SkPoint& center, SkScalar t0, SkScalar t1, const Descriptor&);

    GradientType asGradient(GradientInfo* info, SkMatrix* localMatrix) const override;

    const SkPoint& center() const { return fCenter; }

    SkScalar tBias() const { return fTBias; }

    SkScalar tScale() const { return fTScale; }

protected:

    void flatten(SkWriteBuffer& buffer) const override;

    void appendGradientStages(SkArenaAlloc* alloc,

                              SkRasterPipeline* tPipeline,

                              SkRasterPipeline* postPipeline) const override;

private:

    friend void ::SkRegisterSweepGradientShaderFlattenable();

    SK_FLATTENABLE_HOOKS(SkSweepGradient)

    const SkPoint fCenter;

    const SkScalar fTBias;

    const SkScalar fTScale;

};

#endif