mirror of
https://github.com/42wim/matterbridge.git
synced 2024-11-22 02:32:02 -08:00
53cafa9f3d
This commit adds support for go/cgo tgs conversion when building with the -tags `cgo` The default binaries are still "pure" go and uses the old way of converting. * Move lottie_convert.py conversion code to its own file * Add optional libtgsconverter * Update vendor * Apply suggestions from code review * Update bridge/helper/libtgsconverter.go Co-authored-by: Wim <wim@42.be>
136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) 2020 Samsung Electronics Co., Ltd. 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 "vector_vbezier.h"
|
|
#include <cmath>
|
|
#include "vector_vline.h"
|
|
|
|
V_BEGIN_NAMESPACE
|
|
|
|
VBezier VBezier::fromPoints(const VPointF &p1, const VPointF &p2,
|
|
const VPointF &p3, const VPointF &p4)
|
|
{
|
|
VBezier b;
|
|
b.x1 = p1.x();
|
|
b.y1 = p1.y();
|
|
b.x2 = p2.x();
|
|
b.y2 = p2.y();
|
|
b.x3 = p3.x();
|
|
b.y3 = p3.y();
|
|
b.x4 = p4.x();
|
|
b.y4 = p4.y();
|
|
return b;
|
|
}
|
|
|
|
float VBezier::length() const
|
|
{
|
|
const auto len = VLine::length(x1, y1, x2, y2) +
|
|
VLine::length(x2, y2, x3, y3) +
|
|
VLine::length(x3, y3, x4, y4);
|
|
|
|
const auto chord = VLine::length(x1, y1, x4, y4);
|
|
|
|
if ((len - chord) > 0.01) {
|
|
VBezier left, right;
|
|
split(&left, &right);
|
|
return left.length() + right.length();
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
VBezier VBezier::onInterval(float t0, float t1) const
|
|
{
|
|
if (t0 == 0 && t1 == 1) return *this;
|
|
|
|
VBezier bezier = *this;
|
|
|
|
VBezier result;
|
|
bezier.parameterSplitLeft(t0, &result);
|
|
float trueT = (t1 - t0) / (1 - t0);
|
|
bezier.parameterSplitLeft(trueT, &result);
|
|
|
|
return result;
|
|
}
|
|
|
|
float VBezier::tAtLength(float l, float totalLength) const
|
|
{
|
|
float t = 1.0;
|
|
const float error = 0.01f;
|
|
if (l > totalLength || vCompare(l, totalLength)) return t;
|
|
|
|
t *= 0.5;
|
|
|
|
float lastBigger = 1.0;
|
|
for (int num = 0; num < 100500; num++) {
|
|
VBezier right = *this;
|
|
VBezier left;
|
|
right.parameterSplitLeft(t, &left);
|
|
float lLen = left.length();
|
|
if (fabs(lLen - l) < error) return t;
|
|
|
|
if (lLen < l) {
|
|
t += (lastBigger - t) * 0.5f;
|
|
} else {
|
|
lastBigger = t;
|
|
t -= t * 0.5f;
|
|
}
|
|
}
|
|
vWarning << "no convergence";
|
|
return t;
|
|
}
|
|
|
|
void VBezier::splitAtLength(float len, VBezier *left, VBezier *right)
|
|
{
|
|
float t;
|
|
|
|
*right = *this;
|
|
t = right->tAtLength(len);
|
|
right->parameterSplitLeft(t, left);
|
|
}
|
|
|
|
VPointF VBezier::derivative(float t) const
|
|
{
|
|
// p'(t) = 3 * (-(1-2t+t^2) * p0 + (1 - 4 * t + 3 * t^2) * p1 + (2 * t - 3 *
|
|
// t^2) * p2 + t^2 * p3)
|
|
|
|
float m_t = 1.0f - t;
|
|
|
|
float d = t * t;
|
|
float a = -m_t * m_t;
|
|
float b = 1 - 4 * t + 3 * d;
|
|
float c = 2 * t - 3 * d;
|
|
|
|
return 3 * VPointF(a * x1 + b * x2 + c * x3 + d * x4,
|
|
a * y1 + b * y2 + c * y3 + d * y4);
|
|
}
|
|
|
|
float VBezier::angleAt(float t) const
|
|
{
|
|
if (t < 0 || t > 1) {
|
|
return 0;
|
|
}
|
|
return VLine({}, derivative(t)).angle();
|
|
}
|
|
|
|
V_END_NAMESPACE
|