319 lines
7.4 KiB
C++
319 lines
7.4 KiB
C++
/* This file is part of Clementine.
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Copyright 2004, Adam Pigg <adam@piggz.co.uk>
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Copyright 2009, David Sansome <davidsansome@gmail.com>
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Copyright 2014, Krzysztof Sobiecki <sobkas@gmail.com>
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Copyright 2014, John Maguire <john.maguire@gmail.com>
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Clementine 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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Clementine 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 Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* Original Author: Adam Pigg <adam@piggz.co.uk> 2004
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*/
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#include <config.h>
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#ifdef HAVE_QGLWIDGET
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#include <kdebug.h>
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#include <cmath>
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#include "glanalyzer.h"
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GLAnalyzer::GLAnalyzer(QWidget* parent)
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: Analyzer::Base3D(parent, 15), m_oldy(32, -10.0f), m_peaks(32) {}
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GLAnalyzer::~GLAnalyzer() {}
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void GLAnalyzer::analyze(const Scope& s) {
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// kdDebug() << "Scope Size: " << s.size() << endl;
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/* Scope t(32);
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if (s.size() != 32)
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{
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Analyzer::interpolate(s, t);
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}
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else
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{
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t = s;
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}*/
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uint offset = 0;
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static float peak;
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float mfactor = 0.0;
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static int drawcount;
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if (s.size() == 64) {
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offset = 8;
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}
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glRotatef(0.25f, 0.0f, 1.0f, 0.5f); // Rotate the scene
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drawFloor();
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drawcount++;
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if (drawcount > 25) {
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drawcount = 0;
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peak = 0.0;
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}
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for (uint i = 0; i < 32; i++) {
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if (s[i] > peak) {
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peak = s[i];
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}
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}
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mfactor = 20 / peak;
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for (uint i = 0; i < 32; i++) {
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// Calculate new horizontal position (x) depending on number of samples
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x = -16.0f + i;
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// Calculating new vertical position (y) depending on the data passed by
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// amarok
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y = static_cast<float>(s[i + offset] *
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mfactor); // This make it kinda dynamically
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// resize depending on the data
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// Some basic bounds checking
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if (y > 30)
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y = 30;
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else if (y < 0)
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y = 0;
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if ((y - m_oldy[i]) < -0.6f) {
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y = m_oldy[i] - 0.7f;
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}
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if (y < 0.0f) {
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y = 0.0f;
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}
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m_oldy[i] = y; // Save value as last value
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// Peak Code
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if (m_oldy[i] > m_peaks[i].level) {
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m_peaks[i].level = m_oldy[i];
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m_peaks[i].delay = 30;
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}
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if (m_peaks[i].delay > 0) {
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m_peaks[i].delay--;
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}
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if (m_peaks[i].level > 1.0f) {
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if (m_peaks[i].delay <= 0) {
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m_peaks[i].level -= 0.4f;
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}
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}
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// Draw the bar
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drawBar(x, y);
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drawPeak(x, m_peaks[i].level);
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}
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updateGL();
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}
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void GLAnalyzer::initializeGL() {
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// Clear frame (next fading will be preferred to clearing)
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glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Set clear color to black
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glClear(GL_COLOR_BUFFER_BIT);
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// Set the shading model
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glShadeModel(GL_SMOOTH);
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// Set the polygon mode to fill
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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// Enable depth testing for hidden line removal
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glEnable(GL_DEPTH_TEST);
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// Set blend parameters for 'composting alpha'
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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}
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void GLAnalyzer::resizeGL(int w, int h) {
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glViewport(0, 0, (GLint)w, (GLint)h);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(-16.0f, 16.0f, -10.0f, 10.0f, -50.0f, 100.0f);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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}
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void GLAnalyzer::paintGL() {
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glMatrixMode(GL_MODELVIEW);
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_BLEND);
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glPushMatrix();
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glLoadIdentity();
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glBegin(GL_TRIANGLE_STRIP);
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glColor4f(0.0f, 0.0f, 0.1f, 0.08f);
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glVertex2f(20.0f, 10.0f);
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glVertex2f(-20.0f, 10.0f);
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glVertex2f(20.0f, -10.0f);
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glVertex2f(-20.0f, -10.0f);
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glEnd();
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glPopMatrix();
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glDisable(GL_BLEND);
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glEnable(GL_DEPTH_TEST);
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glClear(GL_DEPTH_BUFFER_BIT);
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#endif
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// swapBuffers();
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glFlush();
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}
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void GLAnalyzer::drawBar(float xPos, float height) {
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glPushMatrix();
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// Sets color to blue
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// Set the colour depending on the height of the bar
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glColor3f((height / 40) + 0.5f, (height / 40) + 0.625f, 1.0f);
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glTranslatef(xPos, -10.0f, 0.0f);
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glScalef(1.0f, height, 3.0f);
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drawCube();
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// Set colour to full blue
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// glColor3f(0.0f, 0.0f, 1.0f);
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// drawFrame();
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glPopMatrix();
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}
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void GLAnalyzer::drawFloor() {
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glPushMatrix();
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// Sets color to amarok blue
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glColor3f(0.5f, 0.625f, 1.0f);
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glTranslatef(-16.0f, -11.0f, -4.0f);
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glScalef(32.0f, 1.0f, 10.0f);
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drawCube();
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// Set colour to full blue
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glColor3f(0.0f, 0.0f, 1.0f);
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drawFrame();
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glPopMatrix();
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}
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void GLAnalyzer::drawPeak(float xPos, float ypos) {
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glPushMatrix();
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// Set the colour to red
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glColor3f(1.0f, 0.0f, 0.0f);
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glTranslatef(xPos, ypos - 10.0f, 0.0f);
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glScalef(1.0f, 1.0f, 3.0f);
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drawCube();
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glPopMatrix();
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}
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void GLAnalyzer::drawCube() {
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glPushMatrix();
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glBegin(GL_POLYGON);
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// This is the top face
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glVertex3f(0.0f, 1.0f, 0.0f);
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glVertex3f(1.0f, 1.0f, 0.0f);
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glVertex3f(1.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 0.0f);
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// This is the front face
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glVertex3f(0.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 1.0f, 0.0f);
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glVertex3f(0.0f, 1.0f, 0.0f);
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glVertex3f(0.0f, 0.0f, 0.0f);
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// This is the right face
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glVertex3f(1.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 1.0f);
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glVertex3f(1.0f, 1.0f, 1.0f);
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glVertex3f(1.0f, 1.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 0.0f);
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// This is the left face
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glVertex3f(0.0f, 0.0f, 0.0f);
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glVertex3f(0.0f, 0.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 0.0f);
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glVertex3f(0.0f, 0.0f, 0.0f);
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// This is the bottom face
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glVertex3f(0.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 1.0f);
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glVertex3f(0.0f, 0.0f, 1.0f);
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glVertex3f(0.0f, 0.0f, 0.0f);
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// This is the back face
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glVertex3f(0.0f, 0.0f, 1.0f);
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glVertex3f(1.0f, 0.0f, 1.0f);
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glVertex3f(1.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 0.0f, 1.0f);
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glEnd();
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glPopMatrix();
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}
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void GLAnalyzer::drawFrame() {
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glPushMatrix();
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glBegin(GL_LINES);
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// This is the top face
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glVertex3f(0.0f, 1.0f, 0.0f);
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glVertex3f(1.0f, 1.0f, 0.0f);
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glVertex3f(1.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 0.0f);
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// This is the front face
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glVertex3f(0.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 1.0f, 0.0f);
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glVertex3f(0.0f, 1.0f, 0.0f);
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glVertex3f(0.0f, 0.0f, 0.0f);
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// This is the right face
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glVertex3f(1.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 1.0f);
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glVertex3f(1.0f, 1.0f, 1.0f);
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glVertex3f(1.0f, 1.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 0.0f);
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// This is the left face
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glVertex3f(0.0f, 0.0f, 0.0f);
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glVertex3f(0.0f, 0.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 0.0f);
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glVertex3f(0.0f, 0.0f, 0.0f);
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// This is the bottom face
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glVertex3f(0.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 0.0f);
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glVertex3f(1.0f, 0.0f, 1.0f);
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glVertex3f(0.0f, 0.0f, 1.0f);
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glVertex3f(0.0f, 0.0f, 0.0f);
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// This is the back face
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glVertex3f(0.0f, 0.0f, 1.0f);
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glVertex3f(1.0f, 0.0f, 1.0f);
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glVertex3f(1.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 1.0f, 1.0f);
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glVertex3f(0.0f, 0.0f, 1.0f);
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glEnd();
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glPopMatrix();
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}
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#endif
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