3D-Sierpinski-gasket.rar_3D Sierpinski_steps

#include "stdio.h" #include "stdlib.h" #include "GL/glut.h" typedef float point[3]; point v[]= {{0.0,0.0,1.0},{0.0,0.9,-0.3},{-0.8,-0.4,-0.3},{0.8,-0.4,-0.3}}; static float theta[]={0.0,0.0,0.0}; int n; void triangle(point a,point b,point c) { glBegin(GL_POLYGON); glNormal3fv(a); glVertex3fv(a); glVertex3fv(b); glVertex3fv(c); glEnd(); } void divide_triangle(point a,point b,point c,int m) { point v1,v2,v3; int j; if(m>0) { for(j=0;j<3;j++) j="0;j<3;j++)" j="0;j<3;j++)"> void tetrahedron(int m) { glColor3f(1.0,0.0,0.0); divide_triangle(v[0],v[1],v[2],m); glColor3f(0.0,1.0,0.0); divide_triangle(v[3],v[2],v[1],m); glColor3f(0.0,0.0,1.0); divide_triangle(v[0],v[3],v[1],m); glColor3f(0.0,0.0,0.0); divide_triangle(v[0],v[2],v[3],m); } void display(void) { glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); glLoadIdentity(); tetrahedron(n); glFlush(); } void myReshape(int w,int h) { glViewport(0,0,w,h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); if(w<=h) glOrtho(-2.0,2.0,-2.0*(GLfloat)h/(GLfloat)w,2.0*(GLfloat)h/(GLfloat)w,-10.0,10.0); else glOrtho(-2.0*(GLfloat)w/(GLfloat)h,2.0*(GLfloat)w/(GLfloat)h,-2.0,2.0,-10.0,10.0); glMatrixMode(GL_MODELVIEW); glutPostRedisplay(); } void main(int argc, char **argv) { printf("No. of subdivisions\n"); scanf("%d",&n); glutInit(&argc,argv); glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH); glutInitWindowSize(500,500); glutCreateWindow("3dgasket"); glutReshapeFunc(myReshape); glutDisplayFunc(display); glEnable(GL_DEPTH_TEST); //extremely important..! glClearColor(1.0,1.0,1.0,1.0); glutMainLoop(); }