Lines Matrix and points Matrix with OpenGL(GLUT)

Matriz De Lineas

Código fuente:

/*

 * GLUT Shapes Demo

 *

 * Written by Nigel Stewart November 2003

 *

 * This program is test harness for the sphere, cone

 * and torus shapes in GLUT.

 *

 * Spinning wireframe and smooth shaded shapes are

 * displayed until the ESC or q key is pressed.  The

 * number of geometry stacks and slices can be adjusted

 * using the + and - keys.

 */

#ifdef __APPLE__

#include <GLUT/glut.h>

#else

#include <GL/gl.h>

#include <GL/glut.h>

#endif

#include <stdlib.h>

static void display(void)

{

 glMatrixMode(GL_PROJECTION);

 glLoadIdentity();

 glClear(GL_COLOR_BUFFER_BIT);

 glPointSize(10);

 glLineWidth(5);

 glColor3f(1.0,0.0,0.0);

 glBegin(GL_LINES);

    for(double i=-1;i<=1;i+=0.1)

      {

        glVertex2d(-1,-i);

        glVertex2d(1,-i);

        glVertex2d(i,-1);

        glVertex2d(i,1);

      }

     glEnd();

     glFlush();

}

int main(int argc, char *argv[])

{

  glutInit(&argc,argv);

  glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);

  glutInitWindowSize(300,300);

  glutInitWindowPosition(0,0);

  glutCreateWindow("Matriz de Lineas");

  glutDisplayFunc(display);

  glutMainLoop();

}

Resultado:

Matriz de Puntos 

Código Fuente:

/*

 * GLUT Shapes Demo

 *

 * Written by Nigel Stewart November 2003

 *

 * This program is test harness for the sphere, cone

 * and torus shapes in GLUT.

 *

 * Spinning wireframe and smooth shaded shapes are

 * displayed until the ESC or q key is pressed.  The

 * number of geometry stacks and slices can be adjusted

 * using the + and - keys.

 */

#ifdef __APPLE__

#include <GLUT/glut.h>

#else

#include <GL/gl.h>

#include <GL/glut.h>

#endif

#include <stdlib.h>

static void display(void)

{

 glMatrixMode(GL_PROJECTION);

 glLoadIdentity();

 glClear(GL_COLOR_BUFFER_BIT);

 glPointSize(10);

 glLineWidth(5);

 glColor3f(1.0,0.0,0.0);

 glBegin(GL_POINTS);

    for(double x=-1; x<=1;x+=0.1)

    {

        for(double y=1;y>=-1;y-=0.1)

        {

            glVertex2f(x,y);

        }

    }

     glEnd();

     glFlush();

}

int main(int argc, char *argv[])

{

  glutInit(&argc,argv);

  glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);

  glutInitWindowSize(300,300);

  glutInitWindowPosition(0,0);

  glutCreateWindow("Matriz de Puntos");

  glutDisplayFunc(display);

  glutMainLoop();

}

Resultado: