Working Broken

Coin

Member

Posts: 102
Joined: 2005.01

Post: #1

Feb 14, 2005 — 03:27 PM

why wont this GLUT/GL thingy work?

Code:

#include <stdlib.h>

#include <GLUT/glut.h>

void display(void)

{    

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glLoadIdentity();

    glTranslatef(-1.5f,0.0f,-6.0f);

    glBegin(GL_TRIANGLES);          

        glColor3f(0.5f , 0.5f, 0.8f);

        glVertex3f( 0.0f, 1.0f, 0.0f);

        glColor3f(0.5f , 0.8f, 0.5f);

        glVertex3f(-1.0f,-1.0f, 0.0f);

        glColor3f(0.8f , 0.5f, 0.5f);

        glVertex3f( 1.0f,-1.0f, 0.0f);                         

    glEnd();   

    glTranslatef(3.0f,0.0f,0.0f);    

    glColor3f(1.0f, 0.5f, 0.5f);

    glBegin(GL_QUADS);                                             

        glVertex3f(-1.0f, 1.0f, 0.0f);                          

        glVertex3f( 1.0f, 1.0f, 0.0f);                          

        glVertex3f( 1.0f,-1.0f, 0.0f);                          

        glVertex3f(-1.0f,-1.0f, 0.0f);                          

    glEnd();

    glutSwapBuffers();

}

void reshape(int width, int height)

{

    glViewport(0, 0, width, height);

}

void idle(void)

{

    glutPostRedisplay();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(640, 480);

    glutCreateWindow("Some Drawings n' Stuff");

    glutDisplayFunc(display);

    glutReshapeFunc(reshape);

    glutIdleFunc(idle);

    glutMainLoop();

    return EXIT_SUCCESS;

}

it draws a blank window. i want it to draw a quad and trianlge

edit:fixed it (the problem is in the display func anyway)

Duane

Member

Posts: 567
Joined: 2004.07

Post: #2

Feb 14, 2005 — 03:37 PM

we need all of the code.

It's not magic, it's Ruby.

Coin

Member

Posts: 102
Joined: 2005.01

Post: #3

Feb 15, 2005 — 08:06 PM

fixed the code (and by that i mean the code here is the same as i have.. althought it doesnt work!)

it draws a black square

OneSadCookie

Luminary

Posts: 5,125
Joined: 2002.04

Post: #4

Feb 15, 2005 — 08:13 PM

as discussed on IRC, you're drawing things outside of OpenGL's default coordinate system. Either change where you're drawing your objects, or change the coordinate system.

Vertizor

Unregistered

Post: #5

Feb 16, 2005 — 08:17 AM

In your reshape() routine, you haven't set up your camera.

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