Aegisub/src/spline.h
arch1t3cht 20cc0b8077 perspective tool: Support drawings
This will not work in more complex cases like lines containing both text
and drawings, but it's correct in simpler ones.
2023-04-29 01:11:38 +02:00

111 lines
4.3 KiB
C++

// Copyright (c) 2007, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
#include "spline_curve.h"
#include <string>
#include <vector>
class VisualToolBase;
class Spline final : private std::vector<SplineCurve> {
/// Visual tool to do the conversion between script and video pixels
const VisualToolBase *coord_translator = nullptr;
/// Spline scale
int scale = 0;
int raw_scale = 0;
/// Video coordinates -> Script coordinates
Vector2D ToScript(Vector2D vec) const;
/// Script coordinates -> Video coordinates
Vector2D FromScript(Vector2D vec) const;
public:
Spline() {};
Spline(const VisualToolBase *scale);
/// Encode to an ASS vector drawing
std::string EncodeToAss() const;
/// Decode an ASS vector drawing
void DecodeFromAss(std::string const& str);
/// Set the scale
/// @param new_scale Power-of-two to scale coordinates by
void SetScale(int new_scale);
/// Get the current scale
int GetScale() const { return raw_scale; }
/// @brief Moves a specific point in the spline
/// @param curve Curve which the point is in
/// @param point Index in the curve
/// @param pos New position
void MovePoint(iterator curve, int point, Vector2D pos);
/// Smooth the spline
void Smooth(float smooth=1.0f);
/// Gets a list of points in the curve
std::vector<float> GetPointList(std::vector<int>& first, std::vector<int>& count);
/// Gets a list of points in the curve
std::vector<float> GetPointList(iterator curve);
/// Get t value and curve of the point closest to reference
void GetClosestParametricPoint(Vector2D reference, iterator& curve, float &t, Vector2D &point);
/// Get closest point on the curve to reference
Vector2D GetClosestPoint(Vector2D reference);
Vector2D GetClosestControlPoint(Vector2D reference);
using std::vector<SplineCurve>::value_type;
using std::vector<SplineCurve>::pointer;
using std::vector<SplineCurve>::reference;
using std::vector<SplineCurve>::const_reference;
using std::vector<SplineCurve>::size_type;
using std::vector<SplineCurve>::difference_type;
using std::vector<SplineCurve>::iterator;
using std::vector<SplineCurve>::const_iterator;
using std::vector<SplineCurve>::reverse_iterator;
using std::vector<SplineCurve>::const_reverse_iterator;
using std::vector<SplineCurve>::back;
using std::vector<SplineCurve>::begin;
using std::vector<SplineCurve>::clear;
using std::vector<SplineCurve>::emplace_back;
using std::vector<SplineCurve>::empty;
using std::vector<SplineCurve>::end;
using std::vector<SplineCurve>::erase;
using std::vector<SplineCurve>::front;
using std::vector<SplineCurve>::insert;
using std::vector<SplineCurve>::operator[];
using std::vector<SplineCurve>::pop_back;
using std::vector<SplineCurve>::push_back;
using std::vector<SplineCurve>::rbegin;
using std::vector<SplineCurve>::rend;
using std::vector<SplineCurve>::size;
};