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#include "glwaveformrendererrgb.h"
#include "waveformwidgetrenderer.h"
#include "waveform/waveform.h"
#include "waveform/waveformwidgetfactory.h"
#include "widget/wwidget.h"
#include "widget/wskincolor.h"
#include "util/math.h"
GLWaveformRendererRGB::GLWaveformRendererRGB(
WaveformWidgetRenderer* waveformWidgetRenderer)
: WaveformRendererSignalBase(waveformWidgetRenderer) {
initializeOpenGLFunctions();
}
GLWaveformRendererRGB::~GLWaveformRendererRGB() {
}
void GLWaveformRendererRGB::onSetup(const QDomNode& /* node */) {
}
void GLWaveformRendererRGB::draw(QPainter* painter, QPaintEvent* /*event*/) {
TrackPointer pTrack = m_waveformRenderer->getTrackInfo();
if (!pTrack) {
return;
}
ConstWaveformPointer waveform = pTrack->getWaveform();
if (waveform.isNull()) {
return;
}
const int dataSize = waveform->getDataSize();
if (dataSize <= 1) {
return;
}
const WaveformData* data = waveform->data();
if (data == NULL) {
return;
}
double firstVisualIndex = m_waveformRenderer->getFirstDisplayedPosition() * dataSize;
double lastVisualIndex = m_waveformRenderer->getLastDisplayedPosition() * dataSize;
const double lineWidth = (1.0 / m_waveformRenderer->getVisualSamplePerPixel()) + 1.5;
const int firstIndex = int(firstVisualIndex + 0.5);
firstVisualIndex = firstIndex - firstIndex % 2;
const int lastIndex = int(lastVisualIndex + 0.5);
lastVisualIndex = lastIndex + lastIndex % 2;
// Reset device for native painting
painter->beginNativePainting();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Per-band gain from the EQ knobs.
float allGain(1.0), lowGain(1.0), midGain(1.0), highGain(1.0);
getGains(&allGain, &lowGain, &midGain, &highGain);
const float kHeightScaleFactor = 255.0 / sqrtf(255 * 255 * 3);
if (m_alignment == Qt::AlignCenter) {
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
if (m_orientation == Qt::Vertical) {
glRotatef(90.0f, 0.0f, 0.0f, 1.0f);
glScalef(-1.0f, 1.0f, 1.0f);
}
glOrtho(firstVisualIndex, lastVisualIndex, -255.0, 255.0, -10.0, 10.0);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glScalef(1.0f, allGain, 1.0f);
glLineWidth(1.2);
glDisable(GL_LINE_SMOOTH);
// Draw reference line
glBegin(GL_LINES); {
glColor4f(m_axesColor_r, m_axesColor_g, m_axesColor_b, m_axesColor_a);
glVertex2f(firstVisualIndex, 0);
glVertex2f(lastVisualIndex, 0);
}
glEnd();
glLineWidth(lineWidth);
glEnable(GL_LINE_SMOOTH);
glBegin(GL_LINES); {
int firstIndex = math_max(static_cast<int>(firstVisualIndex), 0);
int lastIndex = math_min(static_cast<int>(lastVisualIndex), dataSize);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
float left_low = lowGain * (float) data[visualIndex].filtered.low;
float left_mid = midGain * (float) data[visualIndex].filtered.mid;
float left_high = highGain * (float) data[visualIndex].filtered.high;
float left_all = sqrtf(left_low * left_low + left_mid * left_mid + left_high * left_high) * kHeightScaleFactor;
float left_red = left_low * m_rgbLowColor_r + left_mid * m_rgbMidColor_r + left_high * m_rgbHighColor_r;
float left_green = left_low * m_rgbLowColor_g + left_mid * m_rgbMidColor_g + left_high * m_rgbHighColor_g;
float left_blue = left_low * m_rgbLowColor_b + left_mid * m_rgbMidColor_b + left_high * m_rgbHighColor_b;
float left_max = math_max3(left_red, left_green, left_blue);
if (left_max > 0.0f) { // Prevent division by zero
glColor4f(left_red / left_max, left_green / left_max, left_blue / left_max, 0.8f);
glVertex2f(visualIndex, 0.0f);
glVertex2f(visualIndex, left_all);
}
float right_low = lowGain * (float) data[visualIndex+1].filtered.low;
float right_mid = midGain * (float) data[visualIndex+1].filtered.mid;
float right_high = highGain * (float) data[visualIndex+1].filtered.high;
float right_all = sqrtf(right_low * right_low + right_mid * right_mid + right_high * right_high) * kHeightScaleFactor;
float right_red = right_low * m_rgbLowColor_r + right_mid * m_rgbMidColor_r + right_high * m_rgbHighColor_r;
float right_green = right_low * m_rgbLowColor_g + right_mid * m_rgbMidColor_g + right_high * m_rgbHighColor_g;
float right_blue = right_low * m_rgbLowColor_b + right_mid * m_rgbMidColor_b + right_high * m_rgbHighColor_b;
float right_max = math_max3(right_red, right_green, right_blue);
if (right_max > 0.0f) { // Prevent division by zero
glColor4f(right_red / right_max, right_green / right_max, right_blue / right_max, 0.8f);
glVertex2f(visualIndex, 0.0f);
glVertex2f(visualIndex, -1.0f * right_all);
}
}
}
glEnd();
} else { // top || bottom
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
if (m_orientation == Qt::Vertical) {
glRotatef(90.0f, 0.0f, 0.0f, 1.0f);
glScalef(-1.0f, 1.0f, 1.0f);
}
if (m_alignment == Qt::AlignBottom || m_alignment == Qt::AlignRight) {
glOrtho(firstVisualIndex, lastVisualIndex, 0.0, 255.0, -10.0, 10.0);
} else {
glOrtho(firstVisualIndex, lastVisualIndex, 255.0, 0.0, -10.0, 10.0);
}
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glScalef(1.0f, allGain, 1.0f);
glLineWidth(lineWidth);
glEnable(GL_LINE_SMOOTH);
glBegin(GL_LINES); {
int firstIndex = math_max(static_cast<int>(firstVisualIndex), 0);
int lastIndex = math_min(static_cast<int>(lastVisualIndex), dataSize);
for (int visualIndex = firstIndex;
visualIndex < lastIndex;
visualIndex += 2) {
float low = lowGain * (float) math_max(data[visualIndex].filtered.low, data[visualIndex+1].filtered.low);
float mid = midGain * (float) math_max(data[visualIndex].filtered.mid, data[visualIndex+1].filtered.mid);
float high = highGain * (float) math_max(data[visualIndex].filtered.high, data[visualIndex+1].filtered.high);
float all = sqrtf(low * low + mid * mid + high * high) * kHeightScaleFactor;
float red = low * m_rgbLowColor_r + mid * m_rgbMidColor_r + high * m_rgbHighColor_r;
float green = low * m_rgbLowColor_g + mid * m_rgbMidColor_g + high * m_rgbHighColor_g;
float blue = low * m_rgbLowColor_b + mid * m_rgbMidColor_b + high * m_rgbHighColor_b;
float max = math_max3(red, green, blue);
if (max > 0.0f) { // Prevent division by zero
glColor4f(red / max, green / max, blue / max, 0.9f);
glVertex2f(float(visualIndex), 0.0f);
glVertex2f(float(visualIndex), all);
}
}
}
glEnd();
}
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
painter->endNativePainting();
}
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