85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "shakeeffect.h"
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#include <QGridLayout>
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#include <QLabel>
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#include <QtMath>
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#include <QOpenGLFunctions>
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#include "ui/labelslider.h"
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#include "ui/collapsiblewidget.h"
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#include "timeline/clip.h"
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#include "timeline/sequence.h"
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#include "panels/timeline.h"
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#include "global/debug.h"
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ShakeEffect::ShakeEffect(Clip* c, const EffectMeta *em) : Effect(c, em) {
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SetFlags(Effect::CoordsFlag);
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EffectRow* intensity_row = new EffectRow(this, tr("Intensity"));
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intensity_val = new DoubleField(intensity_row, "intensity");
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intensity_val->SetMinimum(0);
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intensity_val->SetDefault(25);
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EffectRow* rotation_row = new EffectRow(this, tr("Rotation"));
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rotation_val = new DoubleField(rotation_row, "rotation");
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rotation_val->SetMinimum(0);
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rotation_val->SetDefault(10);
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EffectRow* frequency_row = new EffectRow(this, tr("Frequency"));
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frequency_val = new DoubleField(frequency_row, "frequency");
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frequency_val->SetMinimum(0);
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frequency_val->SetDefault(5);
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const auto limit = std::numeric_limits<int32_t>::max();
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for (int i=0;i<RANDOM_VAL_SIZE;i++) {
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random_vals[i] = static_cast<double>(this->randomNumber<int32_t>()) / limit;
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}
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}
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void ShakeEffect::process_coords(double timecode, GLTextureCoords& coords, int) {
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int lim = RANDOM_VAL_SIZE/6;
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double multiplier = intensity_val->GetDoubleAt(timecode)/lim;
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double rotmult = rotation_val->GetDoubleAt(timecode)/lim/10;
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double x = timecode * frequency_val->GetDoubleAt(timecode);
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double xoff = 0;
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double yoff = 0;
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double rotoff = 0;
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for (int i=0;i<lim;i++) {
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int offset = 6*i;
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xoff += qSin((x+random_vals[offset])*random_vals[offset+1]);
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yoff += qSin((x+random_vals[offset+2])*random_vals[offset+3]);
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rotoff += qSin((x+random_vals[offset+4])*random_vals[offset+5]);
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}
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xoff *= multiplier;
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yoff *= multiplier;
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rotoff *= rotmult;
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coords.matrix.translate(xoff, yoff, 0.0);
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coords.matrix.rotate(QQuaternion::fromEulerAngles(0.0f, 0.0f, rotoff));
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}
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