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| 變方向旋轉 |
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#include <GL/glut.h>
#include <stdio.h>
#include <math.h>
void mouse (int button,int state,int x,int y)
{
if(state==GLUT_DOWN)
printf(" glVertex2f((%d-150)/150.0,-(%d-150)/150.0); \n", x, y);
}
void display()
{
glClearColor(150/255.0,170/255.0,55/255.0,1);
glClear(GL_COLOR_BUFFER_BIT);
glColor3ub(175,193,81);
glPushMatrix();
glBegin(GL_POLYGON);
for(float angle=0;angle<3.14159265357989*2;angle+=0.1){
glVertex2f( 0.2*cos(angle),0.2*sin(angle));
}
glEnd();
glPopMatrix();
glPushMatrix();
glTranslatef(0,0.5,0);
glBegin(GL_POLYGON);
for(float angle=0; angle<3.14159265357989*2;angle+=0.1){
glVertex2f( 0.2*cos(angle),0.2*sin(angle));
}
glEnd();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.5,0,0);
glBegin(GL_POLYGON);
for(float angle=0; angle<3.14159265357989*2;angle+=0.1){
glVertex2f( 0.2*cos(angle),0.2*sin(angle));
}
glEnd();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutCreateWindow("hello3D");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMainLoop();
}


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