WCudaMSE/Tuto_Image/src/cpp/core/04_OpenGL_pure/opengl/MyDisplayable.cpp

   1 #include <iostream>
   2 #include <GL/glew.h>
   3
   4 #include "MyDisplayable.h"
   5
   6 using std::cout;
   7 using std::endl;
   8
   9
  10
  11
  12 /*----------------------------------------------------------------------*\
  13  |*                     Implementation                                  *|
  14  \*---------------------------------------------------------------------*/
  15
  16 /*--------------------------------------*\
  17  |*             Public                  *|
  18  \*-------------------------------------*/
  19
  20 /*----------------------*\
  21 |*      Constructeur    *|
  22  \*---------------------*/
  23
  24 MyDisplayable::MyDisplayable():variateur(IntervalF(0 ,1), 0.01)
  25     {
  26     animationStep();
  27     }
  28
  29 MyDisplayable::~MyDisplayable()
  30     {
  31     // rien
  32     }
  33
  34 /*----------------------*\
  35 |*      Methodes        *|
  36  \*---------------------*/
  37
  38 /*-----------*\
  39 |* Override  *|
  40  \*----------*/
  41
  42 /**
  43  * Override
  44  */
  45 void MyDisplayable::reshape(Panel_A &panel, int w, int h)
  46     {
  47     glViewport(0, 0, w, h);
  48
  49     //Projection
  50     glMatrixMode (GL_PROJECTION);
  51     glLoadIdentity();
  52     double fovy = 45;
  53     if (h <= 0)
  54         {
  55         h = 1;
  56         }
  57     double ratio = w / h;
  58
  59     gluPerspective(fovy, ratio, 1, 10);
  60
  61     //Camera
  62     glMatrixMode (GL_MODELVIEW);
  63     glLoadIdentity();
  64     gluLookAt(0, 0, 3, 0, 0, 0, 0, 1, 0);
  65     }
  66
  67 /**
  68  * Override
  69  *
  70  * Animation:
  71  *      Pour une animation, en fenetrage glut, il faut deriver de
  72  *
  73  *              GLUTWindow
  74  *
  75  *      Puis redéfinir IdlFunc, et faire un repaint dedans
  76  */
  77 void MyDisplayable::display(Panel_A &panel)
  78     {
  79     glEnable (GL_DEPTH_TEST);
  80     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  81
  82     glPushMatrix();
  83
  84     animationStep();
  85     drawScene3D();
  86
  87     glPopMatrix();
  88     glFinish();
  89     }
  90
  91 /**
  92  * Override
  93  */
  94 void MyDisplayable::init(Panel_A &panel)
  95     {
  96     // Create OpenGL resources here (Textures,VBO,PBO,Shaders...)
  97     }
  98
  99 /**
 100  * Override
 101  */
 102 void MyDisplayable::release(Panel_A &panel)
 103     {
 104     //Freen OpenGL resources here!
 105     }
 106
 107 /*--------------------------------------*\
 108  |*             Private                 *|
 109  \*-------------------------------------*/
 110
 111 void MyDisplayable::drawScene3D()
 112     {
 113     glBegin (GL_TRIANGLES);
 114
 115     glColor3f(1, 0, 0);
 116     glVertex3f(-1, -1, 0);
 117     glColor3f(0, 1, 0);
 118     glVertex3f(1, -1, 0);
 119     glColor3f(0, 0, 1);
 120     glVertex3f(0, py, 0);
 121
 122     glEnd();
 123     }
 124
 125 void MyDisplayable::animationStep()
 126     {
 127     py=variateur.varierAndGet();
 128
 129    // cout<<"[MyDisplayable] : py = "<<py<<endl;
 130     }
 131
 132 /*----------------------------------------------------------------------*\
 133  |*                     End                                             *|
 134  \*---------------------------------------------------------------------*/
 135