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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_GEOMETRY_THREE_POINT_CUBIC_BEZIER_H_
#define UI_GFX_GEOMETRY_THREE_POINT_CUBIC_BEZIER_H_
#include "base/component_export.h"
#include "ui/gfx/geometry/cubic_bezier.h"
namespace gfx {
class COMPONENT_EXPORT(GEOMETRY) ThreePointCubicBezier {
public:
// Creates a curve composed of two cubic curves sharing a common midpoint. The
// curve runs through the (0,0), the midpoint, and (1,1). |p1x|, |p1y|, |p2x|,
// and |p2y| are the coordinates of the control points for the first curve and
// |p3x|, |p3y|, |p4x|, and |p4y| are the coordinates of the control points
// for the second curve.
ThreePointCubicBezier(double p1x,
double p1y,
double p2x,
double p2y,
double midpointx,
double midpointy,
double p3x,
double p3y,
double p4x,
double p4y);
ThreePointCubicBezier(const ThreePointCubicBezier& other);
ThreePointCubicBezier& operator=(const ThreePointCubicBezier&) = delete;
// Evaluates y at the given x.
double Solve(double x) const;
private:
CubicBezier first_curve_;
CubicBezier second_curve_;
double midpointx_;
double midpointy_;
};
} // namespace gfx
#endif // UI_GFX_GEOMETRY_THREE_POINT_CUBIC_BEZIER_H_
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