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CubicSDR
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CubicSDR/src/panel/SpectrumPanel.cpp

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// Copyright (c) Charles J. Cliffe
// SPDX-License-Identifier: GPL-2.0+
#include "SpectrumPanel.h"
#include <sstream>
#include <iostream>
#include <iomanip>
#include "ColorTheme.h"
#include "CubicSDRDefs.h"
SpectrumPanel::SpectrumPanel() {
floorValue = 0;
ceilValue = 1;
showDb = false;
fftSize = DEFAULT_FFT_SIZE;
bandwidth = DEFAULT_DEMOD_BW;
freq = 0;
setFill(GLPANEL_FILL_GRAD_Y);
setFillColor(ThemeMgr::mgr.currentTheme->fftBackground * 2.0, ThemeMgr::mgr.currentTheme->fftBackground);
dbPanelCeil.setMarginPx(0);
dbPanelCeil.setFill(GLPanel::GLPANEL_FILL_GRAD_X);
dbPanelCeil.setFillColor(RGBA4f(0.2f,0.2f,0.2f,5.0f), RGBA4f(0.2f,0.2f,0.2f,0.0f));
dbPanelFloor.setMarginPx(0);
dbPanelFloor.setFill(GLPanel::GLPANEL_FILL_GRAD_X);
dbPanelFloor.setFillColor(RGBA4f(0.2f,0.2f,0.2f,5.0f), RGBA4f(0.2f,0.2f,0.2f,0.0f));
}
float SpectrumPanel::getFloorValue() {
return floorValue;
}
void SpectrumPanel::setFloorValue(float floorValue) {
this->floorValue = floorValue;
}
float SpectrumPanel::getCeilValue() {
return ceilValue;
}
void SpectrumPanel::setCeilValue(float ceilValue) {
this->ceilValue = ceilValue;
}
void SpectrumPanel::setFreq(long long freq) {
this->freq = freq;
}
long long SpectrumPanel::getFreq() {
return freq;
}
void SpectrumPanel::setBandwidth(long long bandwidth) {
this->bandwidth = bandwidth;
}
long long SpectrumPanel::getBandwidth() {
return bandwidth;
}
void SpectrumPanel::setFFTSize(int fftSize_in) {
this->fftSize = fftSize_in;
}
int SpectrumPanel::getFFTSize() {
return fftSize;
}
void SpectrumPanel::setShowDb(bool showDb) {
this->showDb = showDb;
if (showDb) {
addChild(&dbPanelCeil);
addChild(&dbPanelFloor);
} else {
removeChild(&dbPanelCeil);
removeChild(&dbPanelFloor);
}
}
bool SpectrumPanel::getShowDb() {
return showDb;
}
void SpectrumPanel::setPoints(std::vector<float> &points) {
this->points.assign(points.begin(), points.end());
}
void SpectrumPanel::setPeakPoints(std::vector<float> &points) {
this->peak_points.assign(points.begin(), points.end());
}
void SpectrumPanel::drawPanelContents() {
glDisable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
glHint( GL_LINE_SMOOTH_HINT, GL_NICEST );
glLoadMatrixf(transform * (CubicVR::mat4::translate(-1.0f, -0.75f, 0.0f) * CubicVR::mat4::scale(2.0f, 1.5f, 1.0f)));
if (points.size()) {
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
double range = ceilValue-floorValue;
double ranges[3][4] = { { 90.0, 5000.0, 10.0, 100.0 }, { 20.0, 150.0, 10.0, 10.0 }, { -20.0, 30.0, 10.0, 1.0 } };
for (int i = 0; i < 3; i++) {
double p = 0;
double rangeMin = ranges[i][0];
double rangeMax = ranges[i][1];
double rangeTrans = ranges[i][2];
double rangeStep = ranges[i][3];
if (range >= rangeMin && range <= rangeMax) {
double a = 1.0;
if (range <= rangeMin+rangeTrans) {
a *= (range-rangeMin)/rangeTrans;
}
if (range >= rangeMax-rangeTrans) {
a *= (rangeTrans-(range-(rangeMax-rangeTrans)))/rangeTrans;
}
glColor4f(0.12f, 0.12f, 0.12f, a);
glBegin(GL_LINES);
for (double l = floorValue; l<=ceilValue+rangeStep; l+=rangeStep) {
p += rangeStep/range;
glVertex2f(0,p); glVertex2f(1,p);
}
glEnd();
}
}
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glColor3f(ThemeMgr::mgr.currentTheme->fftLine.r, ThemeMgr::mgr.currentTheme->fftLine.g, ThemeMgr::mgr.currentTheme->fftLine.b);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, &points[0]);
glDrawArrays(GL_LINE_STRIP, 0, points.size() / 2);
if (peak_points.size()) {
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glColor4f(0, 1.0, 0, 0.5);
glVertexPointer(2, GL_FLOAT, 0, &peak_points[0]);
glDrawArrays(GL_LINE_STRIP, 0, peak_points.size() / 2);
}
glDisableClientState(GL_VERTEX_ARRAY);
}
GLint vp[4];
glGetIntegerv( GL_VIEWPORT, vp);
float viewHeight = (float) vp[3];
float viewWidth = (float) vp[2];
glLoadMatrixf(transform);
long long leftFreq = (double) freq - ((double) bandwidth / 2.0);
long long rightFreq = leftFreq + (double) bandwidth;
long long hzStep = 1000000;
long double mhzStep = (100000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
double mhzVisualStep = 0.1;
std::stringstream label;
label.precision(1);
double fontScale = GLFont::getScaleFactor();
if (mhzStep * 0.5 * viewWidth < 40 * fontScale) {
mhzStep = (250000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 0.25;
if (mhzStep * 0.5 * viewWidth < 40 * fontScale) {
mhzStep = (500000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 0.5;
}
if (mhzStep * 0.5 * viewWidth < 40 * fontScale) {
mhzStep = (1000000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 1.0;
}
if (mhzStep * 0.5 * viewWidth < 40 * fontScale) {
mhzStep = (2500000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 2.5;
}
if (mhzStep * 0.5 * viewWidth < 40 * fontScale) {
mhzStep = (5000000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 5.0;
}
if (mhzStep * 0.5 * viewWidth < 40 * fontScale) {
mhzStep = (10000000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 10.0;
}
if (mhzStep * 0.5 * viewWidth < 40 * fontScale) {
mhzStep = (50000000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 50.0;
}
} else if (mhzStep * 0.5 * viewWidth > 350 * fontScale) {
mhzStep = (10000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 0.01;
label.precision(2);
}
long long firstMhz = (leftFreq / hzStep) * hzStep;
long double mhzStart = ((long double) (firstMhz - leftFreq) / (long double) (rightFreq - leftFreq)) * 2.0;
long double currentMhz = trunc(floor(firstMhz / (long double)1000000.0));
double hPos = 1.0 - (16.0 / viewHeight) * GLFont::getScaleFactor();
double lMhzPos = 1.0 - (5.0 / viewHeight);
int fontSize = 12;
if (viewHeight > 135) {
fontSize = 16;
hPos = 1.0 - (18.0 / viewHeight) * GLFont::getScaleFactor();
}
GLFont::Drawer refDrawingFont = GLFont::getFont(fontSize, GLFont::getScaleFactor());
for (double m = -1.0 + mhzStart, mMax = 1.0 + ((mhzStart>0)?mhzStart:-mhzStart); m <= mMax; m += mhzStep) {
if (m < -1.0) {
currentMhz += mhzVisualStep;
continue;
}
if (m > 1.0) {
break;
}
label << std::fixed << currentMhz;
double fractpart, intpart;
fractpart = modf(currentMhz, &intpart);
if (fractpart < 0.001) {
glLineWidth(4.0);
glColor3f(ThemeMgr::mgr.currentTheme->freqLine.r, ThemeMgr::mgr.currentTheme->freqLine.g, ThemeMgr::mgr.currentTheme->freqLine.b);
} else {
glLineWidth(1.0);
glColor3f(ThemeMgr::mgr.currentTheme->freqLine.r * 0.65, ThemeMgr::mgr.currentTheme->freqLine.g * 0.65,
ThemeMgr::mgr.currentTheme->freqLine.b * 0.65);
}
glDisable(GL_TEXTURE_2D);
glBegin(GL_LINES);
glVertex2f(m, lMhzPos);
glVertex2f(m, 1);
glEnd();
glColor4f(ThemeMgr::mgr.currentTheme->text.r, ThemeMgr::mgr.currentTheme->text.g, ThemeMgr::mgr.currentTheme->text.b,1.0);
refDrawingFont.drawString(label.str(), m, hPos, GLFont::GLFONT_ALIGN_CENTER, GLFont::GLFONT_ALIGN_CENTER, 0, 0, true);
label.str(std::string());
currentMhz += mhzVisualStep;
}
glLineWidth(1.0);
if (showDb) {
float dbPanelWidth = (1.0 / viewWidth)*88.0 * GLFont::getScaleFactor();
float dbPanelHeight = (1.0/viewHeight)*14.0 * GLFont::getScaleFactor();
std::stringstream ssLabel("");
if (getCeilValue() != getFloorValue() && fftSize) {
ssLabel << std::fixed << std::setprecision(1) << (20.0 * log10(2.0*(getCeilValue())/(double)fftSize)) << "dB";
}
dbPanelCeil.setText(ssLabel.str(), GLFont::GLFONT_ALIGN_RIGHT);
dbPanelCeil.setSize(dbPanelWidth, dbPanelHeight);
dbPanelCeil.setPosition(-1.0 + dbPanelWidth, 1.0 - dbPanelHeight);
ssLabel.str("");
if (getCeilValue() != getFloorValue() && fftSize) {
ssLabel << (20.0 * log10(2.0*(getFloorValue())/(double)fftSize)) << "dB";
}
dbPanelFloor.setText(ssLabel.str(), GLFont::GLFONT_ALIGN_RIGHT);
dbPanelFloor.setSize(dbPanelWidth, dbPanelHeight);
dbPanelFloor.setPosition(-1.0 + dbPanelWidth, - 1.0 + dbPanelHeight);
}
}
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