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343 lines
7.9 KiB
343 lines
7.9 KiB
/***************************************************************************
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gloscope.cpp - description
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-------------------
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begin : Jan 17 2004
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copyright : (C) 2004 by Adam Pigg
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email : adam@piggz.co.uk
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***************************************************************************/
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/***************************************************************************
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* *
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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 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <config.h>
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#ifdef HAVE_TQGLWIDGET
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#include <cmath>
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#include "glanalyzer.h"
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#include <kdebug.h>
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GLAnalyzer::GLAnalyzer( TQWidget *parent )
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: Analyzer::Base3D(parent, 15)
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, m_oldy(32, -10.0f)
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, m_peaks(32)
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{}
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GLAnalyzer::~GLAnalyzer()
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{}
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// METHODS =====================================================
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void GLAnalyzer::analyze( const Scope &s )
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{
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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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{
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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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{
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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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{
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if (s[i] > peak)
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{
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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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{
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//kdDebug() << "Scope item " << i << " value: " << s[i] << endl;
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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 amarok
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y = float(s[i+offset] * mfactor); //This make it kinda dynamically 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) // Going Down Too Much
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{
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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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{
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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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{
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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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{
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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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{
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if (m_peaks[i].delay <= 0)
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{
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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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{
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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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{
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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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{
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glMatrixMode( GL_MODELVIEW );
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#if 0
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glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
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#else
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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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{
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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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{
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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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{
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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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{
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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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{
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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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