
#include <GL/glut.h>
#include <stdio.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);
glBegin(GL_POLYGON);
glVertex2f((158-150)/150.0,(46-150)/150.0);
glVertex2f((52-150)/150.0,(156-150)/150.0);
glVertex2f((163-150)/150.0,(231-150)/150.0);
glVertex2f((251-150)/150.0,(146-150)/150.0);
glEnd();
glBegin(GL_POLYGON);
glVertex2f((41-150)/150.0,-(23-150)/150.0);
glVertex2f((13-150)/150.0,-(73-150)/150.0);
glVertex2f((96-150)/150.0,-(49-150)/150.0);
glEnd();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("hello3D");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMainLoop();
}

#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(150/255.0,170/255.0,55/255.2,1);
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("hello");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMainLoop();
}
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