[Résolu]Jarre qui ne s'affiche pas à lécran

Posté(e) le 22 octobre 200618 a

Bonjour,

mon programme ne m'affiche pas de jarre à l'écran.

J'ai cherché pour savoir ce qui clochait mais je ne trouve rien.

Voici le code :

#include <GL/glut.h>
#include <stdlib.h>
#include <math.h>
#define PI 3.14159263

GLfloat jarre_2d[]={0,0,
		3,0,
		4,2,
		4,5,
		3,7,
		1,9,
		1,11,
		3,13};

void lathe(int nbr_vertices, GLfloat profile[], float angle, int nbr_sections) {

 int s, v;
 float theta1, theta2, x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4;

 for(s=0; s<nbr_sections; s++) {

theta1 = (s*1.0)*angle/nbr_sections*PI/180;
theta2 = (s+1.0)*angle/nbr_sections*PI/180;

for(v=0; v<nbr_vertices-1; v++) {
  x1 = profile[v*2]*cos(theta1);
  y1 = profile[v*2+1];
  z1 = profile[v*2]*sin(theta1);

  x2 = profile[v*2+2]*cos(theta1);
  y2 = profile[v*2+3];
  z2 = profile[v*2+2]*sin(theta1);

  x3 = profile[v*2+2]*cos(theta2);
  y3 = profile[v*2+3];
  z3 = profile[v*2+2]*sin(theta2);

  x4 = profile[v*2]*cos(theta2);
  y4 = profile[v*2+1];
  z4 = profile[v*2]*sin(theta2);

  glBegin(GL_POLYGON);
  glVertex3f(x1,y1,z1);
  glVertex3f(x2,y2,z2);
  glVertex3f(x3,y3,z3);
  glVertex3f(x4,y4,z4);
  glEnd();

}   
 }
}


void display(void)
{
 glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT|GL_DOUBLE); // Clear the colour and depth buffer

 glLoadIdentity(); // Clear matrix stack

 // We set the camera in position 50,50,100 and we look at origo
 gluLookAt(50,50,100,0,0,0,0,1,0);

 glColor3f(0.6,0.2,1.0);

 // jarre
 glTranslatef(-8,2,20);
 glScalef(10,10,10);
 lathe(8, jarre_2d, 360.0, 16);

 glFlush(); // Makes sure that we output the model to the graphics card
 glutSwapBuffers();
}

// Called when a key is pressed
void key(unsigned char k, int x, int y)
{
 if( k == 'q' ) exit(0);
}

void reshape(int width,int height)
{
 glViewport(0,0,width,height); // Reset The Current Viewport

 glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
 glLoadIdentity(); // Reset The Projection Matrix

 // Calculate The Aspect Ratio Of The Window
 gluPerspective(45.0f,(float)640/(float)480,0.1f,1000.0f);
 // Always keeps the same aspect as a 640 wide and 480 high window

 glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
 glLoadIdentity(); // Reset The Modelview Matrix
}

void init()
{
 glClearColor(0,0,0,0);
 glClearDepth(1.0); // Enables Clearing Of The Depth Buffer
 glDepthFunc(GL_LESS); // The Type Of Depth Test To Do
 glEnable(GL_DEPTH_TEST); // Enables Depth Testing
 glShadeModel(GL_SMOOTH); // Enables Smooth Color Shading
}

int main(int argc, char *argv[])
{
 glutInit(&argc, argv);
 glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE); // We want rgb display functionality
 glutInitWindowSize(640,480); // Set the window dimensions
 glutInitWindowPosition(0,0); // Set the window starting point
 glutCreateWindow("Exercise 1"); // Set the caption and launch the window

 init();

 // Last things before rendering starts
 glutDisplayFunc(display); // This will be called every frame
 glutReshapeFunc(reshape); // Reshape the window when something changes
 glutKeyboardFunc(key); // Callback for input

 glutMainLoop(); // Starts the main program

 // We will not reach this point unless exit(0) is called (see function keyCB)

 return 0;
}

Merci

Modifié le 23 octobre 200618 a par Premium

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