Develop
2003.04.23 10:45
[c] OpenGL 시어핀스키 가스킷(p.73 - 첫시간)
Views 8789 Comment 0
#include<GL/glut.h>
void myinit(void);
void display(void);
void main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize(500, 500);
glutInitWindowPosition(0, 0);
glutCreateWindow("Simple OpenGL example");
glutDisplayFunc(display);
myinit();
glutMainLoop();
}
void myinit(void)
{
glClearColor(1.0, 1.0, 1.0, 0.0);
glColor3f(1.0, 0.0, 0.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0.0, 500.0, 0.0, 500.0);
glMatrixMode(GL_MODELVIEW);
}
void display(void)
{
typedef GLfloat point2[2];
point2 vertices[3] = { {0.0, 0.0}, {250.0, 500.0}, {500.0, 0.0} };
int i, j, k;
int rand();
point2 p = {75.0, 50.0};
glClear(GL_COLOR_BUFFER_BIT);
for(k=0; k<500; k++)
{
j = (rand()) % 3;
p[0] = (p[0]+vertices[j][0])/2.0;
p[1] = (p[1]+vertices[j][1])/2.0;
glBegin(GL_POINTS);
glVertex2fv(p);
glEnd();
}
glFlush();
}
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