Attachment 60303 Details for Bug 176150 – test program with GLUT for Linux

test program with GLUT for Linux

glut_linux.cc (text/plain), 3.26 KB, created by supertat

on 2007-03-06 00:52:57 EST

(hide)

Description:

Filename:

MIME Type:

Creator: supertat

Created: 2007-03-06 00:52:57 EST

Size: 3.26 KB

patch

obsolete

>#include <iostream>
>#include <GL/glut.h>
>#include <cmath>
>#include <sys/time.h>
>using namespace std;
>
>/* return current time (in seconds) */
>static int
>current_time(void)
>{
>   struct timeval tv;
>#ifdef __VMS
>   (void) gettimeofday(&tv, NULL );
>#else
>   struct timezone tz;
>   (void) gettimeofday(&tv, &tz);
>#endif
>   return (int) tv.tv_sec;
>}
>
>
>
>#ifndef M_PI
>#define M_PI 3.14159265
>#endif
>
>int rot = 0;
>   
>
>void drawTorus(float r, float R, int nsides, int rings) {
>    float ringDelta = 2.0f * M_PI / rings;
>    float sideDelta = 2.0f * M_PI / nsides;
>    float theta = 0.0f, cosTheta = 1.0f, sinTheta = 0.0f;
>    for (int i = rings - 1; i >= 0; i--) {
>    float theta1 = theta + ringDelta;
>    float cosTheta1 = (float) cos(theta1);
>    float sinTheta1 = (float) sin(theta1);
>    glBegin(GL_QUAD_STRIP);
>    float phi = 0.0f;
>    for (int j = nsides; j >= 0; j--) {
>        phi += sideDelta;
>        float cosPhi = (float) cos(phi);
>        float sinPhi = (float) sin(phi);
>        float dist = R + r * cosPhi;
>        glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
>        glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
>        glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
>        glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi);
>            }
>        glEnd();
>        theta = theta1;
>        cosTheta = cosTheta1;
>        sinTheta = sinTheta1;
>        }
>}
>
>void myInit(char *progname)
>{
>    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA);
>    glutInitWindowSize(640, 480);
>    glutInitWindowPosition(0,0);
>    glutCreateWindow(progname);
>    glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
>    glColor3f(1.0f, 0.0f, 0.0f);
>    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
>    glClearDepth(1.0);
>    glLineWidth(2);
>    glEnable(GL_DEPTH_TEST);
>}
>
>void myIdle()
>{    
>    glutPostRedisplay();
>                    
>    /* calc framerate */
>      {
>         static int t0 = -1;
>         
>         static int frames = 0;
>         int t = current_time();
>
>         if (t0 < 0)
>            t0 = t;
>
>         frames++;
>
>         if (t - t0 >= 5.0) {
>            GLfloat seconds = t - t0;
>            GLfloat fps = frames / seconds;
>            printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds,
>                   fps);
>            t0 = t;
>            frames = 0;
>         }
>      }
>}
>
>void myDisplay()
>{    
>    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>    glClearColor(.3f, .5f, .8f, 1.0f);
>    glLoadIdentity();
>    glTranslatef(0.0f, 0.0f, -10.0f);
>    float frot = rot;
>    glRotatef(0.15f * rot, 2.0f * frot, 10.0f * frot, 1.0f);
>    glRotatef(0.3f * rot, 3.0f * frot, 1.0f * frot, 1.0f);
>    rot++;
>    glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
>    glColor3f(0.9f, 0.9f, 0.9f);
>    drawTorus(1, 1.9f + ((float) sin((0.004f * frot))), 15, 15);
>    glutSwapBuffers();
>}
>
>void myReshape(int width, int height)
>{
>    float fAspect = width / height;
>    glViewport(0, 0, width, height);
>    glMatrixMode(GL_PROJECTION);
>    glLoadIdentity();
>
>    gluPerspective(45.0f, fAspect, 0.5f, 400.0f);
>    glMatrixMode(GL_MODELVIEW);
>    glLoadIdentity();
>}
>
>int main(int argc, char** argv)
>{
>    glutInit(&argc, argv);
>    myInit(argv[0]);
>    glutReshapeFunc(myReshape);
>    glutIdleFunc(myIdle);
>    glutDisplayFunc(myDisplay);
>    glutMainLoop();
>    
>    return 0;
>}

Actions: View

Attachments on bug 176150: 60136 | 60137 | 60138 | 60302 | 60303 | 60304 | 60305 | 60522