2D太阳系绘制(2)

void earth();

int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) {

UNREFERENCED_PARAMETER(hPrevInstance); UNREFERENCED_PARAMETER(lpCmdLine); char *argv[] = {\, \};

int argc = 2; // must/should match the number of strings in argv glutInit(&argc, argv); //初始化GLUT库； glutInitWindowSize(700,700); //设置显示窗口大小

glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB); //设置显示模式；（注意双缓冲） glutCreateWindow(\); // 创建显示窗口 glutDisplayFunc(Display); //注册显示回调函数 glutReshapeFunc(Reshape); //注册窗口改变回调函数 myinit();

glutTimerFunc(200, mytime, 10); glutMainLoop(); //进入事件处理循环 return 0; }

void myinit() { }

void Display(void) {

glClear(GL_COLOR_BUFFER_BIT);

glMatrixMode(GL_MODELVIEW); //设置矩阵模式为模型变换模式，表示在世界坐标系下 glLoadIdentity(); //将当前矩阵设置为单位矩阵

glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glEnable(GL_BLEND); glEnable(GL_POINT_SMOOTH);

glHint(GL_POINT_SMOOTH_HINT, GL_NICEST); glEnable(GL_LINE_SMOOTH);

glHint(GL_LINE_SMOOTH_HINT, GL_NICEST); glEnable(GL_POLYGON_SMOOTH);

glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST); glPointSize(10); glLineWidth(8);

sun(); earth();

glutSwapBuffers(); //双缓冲的刷新模式； }

void sun() {

glPushMatrix(); glPushMatrix();

glColor3f(1,0,0); glutWireSphere(rs,40,40); glRotatef(as,0,0,1);

glPopMatrix(); glColor3f(1,1,0); }

void earth() {

glColor3f(1,1,0); glBegin(GL_POINTS); glVertex2f(xs+rs,ys); glEnd(); glPopMatrix(); glPushMatrix(); glPushMatrix(); glColor3f(0,0,1); glutWireSphere(re,40,40); glPopMatrix(); glTranslatef(xe,ye,0); glRotatef(ae,0,0,1); glTranslatef(-xe,-ye,0); glPushMatrix(); glRotatef(aes,0,0,1); glBegin(GL_POINTS); glVertex2f(xs+rs,ys); glEnd();

glPopMatrix();

}

glPopMatrix();

void mytime(int value) {

glutPostRedisplay(); //重画，相当于重新调用Display(),改编后的变量得以传给绘制函数

glutTimerFunc(200, mytime, 10); }

void Reshape(GLsizei w,GLsizei h) {

glMatrixMode(GL_PROJECTION); //投影矩阵模式 glLoadIdentity(); //矩阵堆栈清空 glViewport(0,0,w,h); //设置视区大小

gluOrtho2D(-xm-rm-10,xm+rm+10,-xm-rm-10,xm+rm+10); //设置裁剪窗口大小 glMatrixMode(GL_MODELVIEW); //模型矩阵模式 }

as+=1; ae+=1; aes+=1;

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说综合文库2D太阳系绘制(2)在线全文阅读。