84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
#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 "project/clip.h"
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#include "project/sequence.h"
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#include "panels/timeline.h"
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#include "debug.h"
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ShakeEffect::ShakeEffect(Clip *c, const EffectMeta *em) : Effect(c, em) {
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enable_coords = true;
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EffectRow* intensity_row = add_row("Intensity:");
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intensity_val = intensity_row->add_field(EFFECT_FIELD_DOUBLE);
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intensity_val->id = "intensity";
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intensity_val->set_double_minimum_value(0);
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EffectRow* rotation_row = add_row("Rotation:");
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rotation_val = rotation_row->add_field(EFFECT_FIELD_DOUBLE);
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rotation_val->id = "rotation";
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rotation_val->set_double_minimum_value(0);
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EffectRow* frequency_row = add_row("Frequency:");
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frequency_val = frequency_row->add_field(EFFECT_FIELD_DOUBLE);
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frequency_val->id = "frequency";
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frequency_val->set_double_minimum_value(0);
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// set defaults
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intensity_val->set_double_default_value(25);
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rotation_val->set_double_default_value(10);
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frequency_val->set_double_default_value(5);
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srand(QDateTime::currentMSecsSinceEpoch());
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for (int i=0;i<RANDOM_VAL_SIZE;i++) {
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random_vals[i] = (double)rand()/RAND_MAX;
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}
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connect(intensity_val, SIGNAL(changed()), this, SLOT(field_changed()));
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connect(rotation_val, SIGNAL(changed()), this, SLOT(field_changed()));
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connect(frequency_val, SIGNAL(changed()), this, SLOT(field_changed()));
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}
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void ShakeEffect::process_coords(double timecode, GLTextureCoords& coords) {
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int lim = RANDOM_VAL_SIZE/6;
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double multiplier = intensity_val->get_double_value(timecode)/lim;
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double rotmult = rotation_val->get_double_value(timecode)/lim/10;
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double x = timecode * frequency_val->get_double_value(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.vertexTopLeftX += xoff;
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coords.vertexTopRightX += xoff;
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coords.vertexBottomLeftX += xoff;
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coords.vertexBottomRightX += xoff;
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coords.vertexTopLeftY += yoff;
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coords.vertexTopRightY += yoff;
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coords.vertexBottomLeftY += yoff;
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coords.vertexBottomRightY += yoff;
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glRotatef(rotoff, 0, 0, 1);
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}
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