#include <GL/glut.h>
void OnDisplay(void)
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glEnable(GL_DEPTH_TEST);
	glMatrixMode(GL_MODELVIEW);

	GLfloat light_position[] = { 0.0, 0.0, 100.0, 0.0 };
	glLightfv(GL_LIGHT0, GL_POSITION, light_position);

	glEnable(GL_LIGHTING);
	glEnable(GL_LIGHT0);


	//	glColor3f(1.0,0.0,0.0);
	//	glRectf(0.0f,0.0f,10.0f,10.0f);
	glutSolidSphere(50.0, 20, 20);

	/*	glTranslatef(0.0f,50.0,0.0f);
		glColor3f(0.0f,1.0f,0.0f);
		glutSolidSphere(10.0f,20,20);

		glLoadIdentity();

		glTranslatef(50.0f,0.0,0.0);
		glColor3f(0.0,0.0,1.0);
		glutSolidSphere(10.0,20,20);*/
	glFlush();
	glutSwapBuffers();
}
void OnReshape(int w, int h)
{
	glViewport(0, 0, w, h);

	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();

	//	gluOrtho2D(0,100,0,100);
	glOrtho(-200, 200, -200, 200, 0.1, 100);
	gluLookAt(0.0, 0.0, 100, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

}
void main(int argc, char** argv)
{
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_RGB);
	glutInitWindowSize(400, 400);
	glutInitWindowPosition(400, 400);
	glutCreateWindow("kkk");
	glutDisplayFunc(OnDisplay);
	glutReshapeFunc(OnReshape);
	glutMainLoop();

}