终于搞定第一个像样的简单opengl程序，不过纹理贴图部分目前还是一头雾水啊，明天一定将其搞定。
先上个实例图：
功能很简单，使用鼠标的左中右键分别设置球体颜色的 RGB参数以调整颜色。
按a或d使球体旋转
代码如下// display.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include #include #include #include #include const GLfloat lightPosition[] = {10.0,10.0,10.0,0.0}; const GLfloat whiteLight[] = {0.8,0.8,0.8,1.0}; GLfloat matSpecular [] = {0.3,0.3,0.3,1.0}; GLfloat matShininess [] = {20.0}; GLfloat matEmission [] = {0.3,0.3,0.3,1.0}; GLfloat spin = 0; void init() { glClearColor(0.3,0.3,0.3,1.0); glClearDepth(1.0); glShadeModel(GL_SMOOTH); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_DEPTH_TEST); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glLightfv(GL_LIGHT0,GL_POSITION,lightPosition); glLightfv(GL_LIGHT0,GL_DIFFUSE,whiteLight); glLightfv(GL_LIGHT0,GL_SPECULAR,whiteLight); } void display() { glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); glMatrixMode(GL_PROJECTION); glLoadIdentity();; glOrtho(-10.0,10.0,-10.0,10.0,-10.0,10.0); glMatrixMode(GL_MODELVIEW); glPushMatrix(); glRotatef(spin,0.0,1.0,0.0); glMaterialfv(GL_FRONT,GL_SPECULAR,matSpecular); glMaterialfv(GL_FRONT,GL_SHININESS,matShininess); glMaterialfv(GL_FRONT,GL_EMISSION,matEmission); glutSolidSphere(3.0,16,16); glPopMatrix(); glFlush(); } void reshape(int w,int h) { glViewport(0.0,0.0,(GLsizei) w,(GLsizei) h); } void keyboardFunc(unsigned char key,int x,int y) { switch(key) { case 'a': spin +=30; break; case 'd': spin -=30; break; } if(spin<360) spin +=360; else if(spin>=360) spin -=360; glutPostRedisplay(); } void mouseFunc(int button,int state,int x,int y) { if(state==GLUT_DOWN){ switch (button) { case GLUT_LEFT_BUTTON: matEmission[0]+=1.0; if(matEmission[0]>1.0) matEmission[0]-=1.1; break; case GLUT_MIDDLE_BUTTON: matEmission[1]+=1.0; if(matEmission[1]>1.0) matEmission[1]-=1.1; break; case GLUT_RIGHT_BUTTON: matEmission[2]+=1.0; if(matEmission[2]>1.0) matEmission[2]-=1.1; break; } glutPostRedisplay(); } } int main(int argc,char *argv[]) { glutInit(&argc,argv); glutInitDisplayMode(GLUT_SINGLE|GLUT_RGBA|GLUT_DEPTH); glutInitWindowSize(450,450); glutInitWindowPosition(150,150); glutCreateWindow("rotate sphere"); glutDisplayFunc(display); glutReshapeFunc(reshape); glutKeyboardFunc(keyboardFunc); glutMouseFunc(mouseFunc); init(); glutMainLoop(); return EXIT_SUCCESS; }
