openGL 光照示例运行没效果求指导

xinlan0711 2014-05-08 04:39:01

RT：我安装别人关于openGL的例子写完代码运行一点没效果求指导

#include "glut.h"



#define WIDTH 400

#define HEIGHT 400



static GLfloat angle = 0.0f;



void myDisplay(void)

{

	glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BITS);



	glMatrixMode(GL_PROJECTION);

	glLoadIdentity();

	gluPerspective(90.0f, 1.0f, 1.0f, 20.0f);

	glMatrixMode(GL_MODELVIEW);

	glLoadIdentity();

	gluLookAt(0.0, 5.0, -10.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);

        //定义白色光源

	{

		GLfloat sun_light_position[] = {0.0f, 0.0f, 0.0f, 1.0f}; 

		GLfloat sun_light_ambient[] = {0.0f, 0.0f, 0.0f, 1.0f}; 

		GLfloat sun_light_diffuse[] = {1.0f, 1.0f, 1.0f, 1.0f}; 

		GLfloat sun_light_specular[] = {1.0f, 1.0f, 1.0f, 1.0f}; 

		

		glLightfv(GL_LIGHT0, GL_POSITION, sun_light_position); 

		glLightfv(GL_LIGHT0, GL_AMBIENT, sun_light_ambient); 

		glLightfv(GL_LIGHT0, GL_DIFFUSE, sun_light_diffuse); 

		glLightfv(GL_LIGHT0, GL_SPECULAR, sun_light_specular); 

		

		glEnable(GL_LIGHT0); 

		glEnable(GL_LIGHTING); 

		glEnable(GL_DEPTH_TEST); 

	}

        //定义太阳材质并绘制

	{

		GLfloat sun_mat_ambient[] = {0.0f, 0.0f, 0.0f, 1.0f}; 

		GLfloat sun_mat_diffuse[] = {0.0f, 0.0f, 0.0f, 1.0f}; 

		GLfloat sun_mat_specular[] = {0.0f, 0.0f, 0.0f, 1.0f}; 

		GLfloat sun_mat_emission[] = {0.5f, 0.0f, 0.0f, 1.0f}; 

		GLfloat sun_mat_shininess = 0.0f; 



		glMaterialfv(GL_FRONT, GL_AMBIENT, sun_mat_ambient); 

		glMaterialfv(GL_FRONT, GL_DIFFUSE, sun_mat_diffuse); 

		glMaterialfv(GL_FRONT, GL_SPECULAR, sun_mat_specular); 

		glMaterialfv(GL_FRONT, GL_EMISSION, sun_mat_emission); 

		glMaterialf (GL_FRONT, GL_SHININESS, sun_mat_shininess); 

		glutSolidSphere(2.0, 40, 32); 

	}

        //定义地球材质并绘制

	{

		GLfloat earth_mat_ambient[] = {0.0f, 0.0f, 0.5f, 1.0f}; 

		GLfloat earth_mat_diffuse[] = {0.0f, 0.0f, 0.5f, 1.0f}; 

		GLfloat earth_mat_specular[] = {0.0f, 0.0f, 1.0f, 1.0f}; 

		GLfloat earth_mat_emission[] = {0.0f, 0.0f, 0.0f, 1.0f}; 

		GLfloat earth_mat_shininess = 30.0f; 

		

		glMaterialfv(GL_FRONT, GL_AMBIENT, earth_mat_ambient); 

		glMaterialfv(GL_FRONT, GL_DIFFUSE, earth_mat_diffuse); 

		glMaterialfv(GL_FRONT, GL_SPECULAR, earth_mat_specular); 

		glMaterialfv(GL_FRONT, GL_EMISSION, earth_mat_emission); 

		glMaterialf (GL_FRONT, GL_SHININESS, earth_mat_shininess); 

		

		glRotatef(angle, 0.0f, -1.0f, 0.0f); 

		glTranslatef(5.0f, 0.0f, 0.0f); 

		glutSolidSphere(2.0, 40, 32); 

	}

	glFlush();

	glutSwapBuffers();

}



void myIdle(void) 

{ 

	angle += 1.0f; 

	if( angle >= 360.0f ) 

		angle = 0.0f; 

	myDisplay(); 

} 

int main(int argc, char* argv[]) 

{ 

	glutInit(&argc, argv); 

	glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE); 

	glutInitWindowPosition(200, 200); 

	glutInitWindowSize(WIDTH, HEIGHT);

	glutCreateWindow("OpenGL光照演示"); 

	glutDisplayFunc(&myDisplay); 

	glutIdleFunc(&myIdle); 

	glutMainLoop(); 

	return 0; 

}