godot/thirdparty/thorvg/src/common/tvgLines.cpp

/*
 * Copyright (c) 2020 - 2024 the ThorVG project. All rights reserved.

 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:

 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "tvgMath.h"
#include "tvgLines.h"

#define BEZIER_EPSILON …

/************************************************************************/
/* Internal Class Implementation                                        */
/************************************************************************/

static float _lineLengthApprox(const Point& pt1, const Point& pt2)
{ … }


static float _lineLength(const Point& pt1, const Point& pt2)
{ … }


template<typename LengthFunc>
float _bezLength(const Bezier& cur, LengthFunc lineLengthFunc)
{ … }


template<typename LengthFunc>
float _bezAt(const Bezier& bz, float at, float length, LengthFunc lineLengthFunc)
{ … }


/************************************************************************/
/* External Class Implementation                                        */
/************************************************************************/

namespace tvg
{

float lineLength(const Point& pt1, const Point& pt2)
{ … }


void lineSplitAt(const Line& cur, float at, Line& left, Line& right)
{ … }


void bezSplit(const Bezier& cur, Bezier& left, Bezier& right)
{ … }


float bezLength(const Bezier& cur)
{ … }


float bezLengthApprox(const Bezier& cur)
{ … }


void bezSplitLeft(Bezier& cur, float at, Bezier& left)
{ … }


float bezAt(const Bezier& bz, float at, float length)
{ … }


float bezAtApprox(const Bezier& bz, float at, float length)
{ … }


void bezSplitAt(const Bezier& cur, float at, Bezier& left, Bezier& right)
{ … }


Point bezPointAt(const Bezier& bz, float t)
{ … }


float bezAngleAt(const Bezier& bz, float t)
{ … }


}