socg/myglwidget.cpp

   1 #include <iostream>
   2 #include <QKeyEvent>
   3 #include <QtOpenGL>
   4
   5 #include <cmath>
   6
   7 #include "axis.h"
   8 #include "camera.h"
   9 #include "coordsAndAngles.h"
  10 #include "myglwidget.h"
  11 #include "workerthread.h"
  12
  13 // Non-default arguments must come first
  14 MyGLWidget::MyGLWidget(Axis *pAxisX, Axis *pAxisY, Axis *pAxisZ,
  15                        Camera *pCamera, Sphere * pSphere, QWidget *parent)
  16     : QGLWidget(parent)
  17 {
  18     qDebug("MyGLWidget::MyGLWidget()");
  19
  20     m_pAxisX = pAxisX;
  21     m_pAxisY = pAxisY;
  22     m_pAxisZ = pAxisZ;
  23
  24     m_pCamera = pCamera;
  25     m_pSphere = pSphere;
  26 }
  27
  28 MyGLWidget::~MyGLWidget()
  29 {
  30     qDebug("MyGLWidget::~MyGLWidget()");
  31 }
  32
  33 void MyGLWidget::initializeGL()
  34 {
  35     qDebug("MyGLWidget::initializeGL()");
  36
  37     // Enable backface culling
  38     glEnable(GL_CULL_FACE);
  39
  40     // Clear color is set to black
  41     glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
  42     glShadeModel(GL_SMOOTH);
  43
  44     // Reset modelview matrix
  45     glMatrixMode(GL_MODELVIEW);
  46     glLoadIdentity();
  47
  48     // We don't need to call drawSphere() here,
  49     // since the resizeGL() will be called upon
  50     // the initial creation of the window.
  51 }
  52
  53 void MyGLWidget::paintGL()
  54 {
  55     qDebug("MyGLWidget::paintGL()");
  56
  57     // Clear scene
  58     glClear(GL_COLOR_BUFFER_BIT);
  59
  60     glMatrixMode(GL_PROJECTION);
  61     glLoadIdentity();
  62     gluPerspective(90, 1, 0.01, 100);
  63
  64     // Reset modelview matrix
  65     glMatrixMode(GL_MODELVIEW);
  66     glLoadIdentity();
  67
  68     //gluLookAt(1, 1, 1, 0, 0, -1, 0, 1, 0);
  69     gluLookAt(m_pCamera->getEyeX(),
  70               m_pCamera->getEyeY(),
  71               m_pCamera->getEyeZ(),
  72               m_pCamera->getCenterX(),
  73               m_pCamera->getCenterY(),
  74               m_pCamera->getCenterZ(),
  75               m_pCamera->getUpX(),
  76               m_pCamera->getUpY(),
  77               m_pCamera->getUpZ());
  78
  79     // Draw global axis system
  80     m_pAxisX->draw(0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f);
  81     m_pAxisY->draw(0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);
  82     m_pAxisZ->draw(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f);
  83
  84     // Rotate appropriately
  85     qDebug("xP = %f\tyP = %f\tzP = %f\txA = %f\tyA = %f\tzA = %f",
  86            m_pCoordsAndAngles->getXPos(),
  87            m_pCoordsAndAngles->getYPos(),
  88            m_pCoordsAndAngles->getZPos(),
  89            m_pCoordsAndAngles->getXAngle(),
  90            m_pCoordsAndAngles->getYAngle(),
  91            m_pCoordsAndAngles->getZAngle());
  92
  93     glTranslatef(0, -m_pCoordsAndAngles->getXPos()/700, 0);
  94
  95     glRotatef(m_pCoordsAndAngles->getXAngle(), 1.0f, 0.0f, 0.0f);
  96     glRotatef(m_pCoordsAndAngles->getYAngle(), 0.0f, 1.0f, 0.0f);
  97     glRotatef(m_pCoordsAndAngles->getZAngle(), 0.0f, 0.0f, 1.0f);
  98
  99     // Local Axis
 100     if (m_pAxisX->isLocal() || m_pAxisY->isLocal() || m_pAxisZ->isLocal()) {
 101         m_pAxisX->draw(0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f);
 102         m_pAxisY->draw(0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);
 103         m_pAxisZ->draw(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f);
 104     }
 105
 106     // Draw sphere
 107     m_pSphere->draw();
 108
 109     glFlush();
 110 }
 111
 112 void MyGLWidget::resizeGL(int width, int height)
 113 {
 114     qDebug("MyGLWidget::resizeGL()\n"
 115            "New width = %d\tNew height = %d", width, height);
 116
 117     // Update viewport to cover the whole screen
 118     glViewport(0, 0, width, height);
 119
 120     // Reset projection matrix
 121     glMatrixMode(GL_PROJECTION);
 122     glLoadIdentity();
 123     //gluPerspective(45.0, (GLfloat)width/(GLfloat)height, 0.1f, 100.0f);
 124
 125     // Reset modelview matrix
 126     glMatrixMode(GL_MODELVIEW);
 127     glLoadIdentity();
 128 }
 129
 130 void MyGLWidget::setAxis(axis_t axis, const Axis *pAxis)
 131 {
 132     qDebug("MyGLWidget::setAxis()");
 133
 134     switch(axis) {
 135     case AXIS_X:
 136         m_pAxisX = pAxis;
 137         break;
 138     case AXIS_Y:
 139         m_pAxisY = pAxis;
 140         break;
 141     case AXIS_Z:
 142         m_pAxisZ = pAxis;
 143         break;
 144     };
 145 }
 146
 147 void MyGLWidget::setCamera(const Camera *pCamera)
 148 {
 149     qDebug("MyGLWidget::setCamera()");
 150
 151     m_pCamera = pCamera;
 152 }
 153
 154 void MyGLWidget::setSphere(const Sphere *pSphere)
 155 {
 156     qDebug("MyGLWidget::setSphere()");
 157
 158     m_pSphere = pSphere;
 159 }
 160
 161 void MyGLWidget::setCoordsAndAngles(const CoordsAndAngles *pCoordsAndAngles)
 162 {
 163     qDebug("MyGLWidget::setCoordsAndAngles()");
 164
 165     m_pCoordsAndAngles = pCoordsAndAngles;
 166 }