计算机图形学-光照模型

#include<gl/glut.h>#include<stdlib.h>void init(void){GLfloat mat_specular[]={1.0,1.0,1.0,1.0};GLfloat mat_shininess[]={50.0};GLfloat light_position[]={1.0,1.0,1.0,0.0};GLfloat white_light[]={1.0,1.0,1.0,1.0};GLfloat Light_Model_Ambient[]={0.2,0.2,0.2,1.0};glClearColor (0.0,0.0,0.0,0.0);glShadeModel(GL_SMOOTH);glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular);glMaterialfv(GL_FRONT,GL_SHININESS,mat_shininess);glLightfv(GL_LIGHT0,GL_POSITION, light_position);glLightfv(GL_LIGHT0,GL_DIFFUSE, white_light);glLightfv(GL_LIGHT0,GL_SPECULAR, white_light);glLightModelfv(GL_LIGHT_MODEL_AMBIENT, Light_Model_Ambient);glEnable(GL_LIGHTING);glEnable(GL_LIGHT0);glEnable(GL_DEPTH_TEST);}void display(void){glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);glutSolidTeapot(0.5);glFlush();}void reshape(int w, int h){glViewport(0,0,(GLsizei)w, (GLsizei) h);glMatrixMode(GL_PROJECTION);glLoadIdentity();if(w<=h)   glOrtho(-1.5,1.5,-1.5*(GLfloat)h/(GLfloat)w,1.5*(GLfloat)h/(GLfloat)w,-10.0,10.0);elseglOrtho(-1.5*(GLfloat)w/(GLfloat)h, 1.5*(GLfloat)w/(GLfloat)h,-1.5,1.5,-10.0,10.0);glMatrixMode(GL_MODELVIEW);glLoadIdentity();}int main(int argc, char** argv){glutInit(&argc,argv);glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH);glutInitWindowSize(500,500);glutInitWindowPosition(100,100);glutCreateWindow(argv[0]);init();glutDisplayFunc(display);glutReshapeFunc(reshape);glutMainLoop();return 0;}