opengl绘制三维模型轮廓实例

#include<windows.h> #include<GL/glut.h> int angx=0; int angy=0; int angz=0; void display() { GLfloat mat_solid[] = {0.75, 0.75, 0.0, 1.0}; glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(); glRotatef(angx, 1.0, 0.0, 0.0); glRotatef(angy, 0.0, 1.0, 0.0); glRotatef(angz, 0.0, 0.0, 1.0); glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_solid); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDepthMask(0); glutWireCube(0.61); glDepthMask(1); glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE ); glEnable(GL_LIGHTING); glutSolidCube(0.6); glFrontFace(GL_CCW); glDisable(GL_LIGHTING); glDisable(GL_BLEND); glPopMatrix(); glFlush(); } void init() { glClearColor(0.0, 0.0, 0.0, 1.0); glEnable(GL_LIGHT0); glEnable(GL_DEPTH_TEST); } 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); else glOrtho(-1.5*(GLfloat)w/(GLfloat)h,1.5*(GLfloat)w/(GLfloat)h, -1.5, 1.5, -10.0, 10.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } void keyboard(unsigned char key, int x, int y) { switch(key) { case 'a': angx+=10; angx=angx%360; break; case 's': angy+=10; angy=angy%360; break; case 'd': angz+=10; angz=angz%360; break; case 'z': exit(0); break; } glutPostRedisplay(); } int main(int grac, char** agrv) { glutInit(&grac, agrv); glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB |GLUT_DEPTH); glutInitWindowSize(500, 500); glutInitWindowPosition(100,100); glutCreateWindow("OUTLINE TEST"); init(); glutDisplayFunc(display); glutReshapeFunc(reshape); glutKeyboardFunc(keyboard); glutMainLoop(); return 0; }