#include<GL/glut.h>
void display()
{
glBegin(GL_POLYGON);
glColor3f(1,1,0);
glVertex3f(0,0,0);
glVertex3f(0,1,0);
glVertex3f(1,1,0);
glEnd();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("hello 3D");
glutDisplayFunc(display);
glutMainLoop();
}

#include <GL/glut.h>
void display()
{
///glutSolidTeapot(0.3);
glClearColor(2, 2, 2, 2);
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_POLYGON);
glColor3f(47/255.0,122/255.0,215/255.0);
glVertex3f(0.0, 0.0, 0.0);
glVertex3f(1.0, 0.0, 0.0);
glVertex3f(1.0, 1.0, 0.0);
glEnd();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("hello");
glutDisplayFunc(display);
glutMainLoop();
}

三、
1.以小畫家設定形狀顏色及座標
2.以滑鼠點擊印出程式
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