danbai.rar_OpenGL绘制单摆_opengl 画单摆_opengl单摆_单摆OpenGL_用Openg|画两两

#include <gl/glut.h> #include <math.h> #define WIDTH 800 #define HEIGHT 800 static double PI = 3.141592653 ; float angle=0.0 ; int up = 1 ; double k = 0.0 ; double x=0.0, y=0.0 ; void init() { glClearColor(0.0,0.0,0.0,0.0) ; glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); } void myDisplay(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) ; glShadeModel(GL_FLAT) ; glEnable(GL_DEPTH_TEST) ; glMatrixMode(GL_PROJECTION) ; glLoadIdentity(); gluPerspective(90.0f, 1.0f, 1.0f, 2000.0f); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); gluLookAt(0, 0, 5, 0, 0, 0, 0, 1, 0) ; //定义白色光源 GLfloat light_position[] = {0.0f, 5.0f, 0.0f, 1.0f}; GLfloat light_ambient[] = {1.0f, 1.0f, 1.0f, 1.0f}; GLfloat light_diffuse[] = {1.0f, 1.0f, 1.0f, 1.0f}; GLfloat light_specular[] = {1.0f, 1.0f, 1.0f, 1.0f}; glLightfv(GL_LIGHT0, GL_POSITION, light_position); glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient); glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse); glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular); //开启光照 glEnable(GL_LIGHT0) ; glEnable(GL_LIGHTING) ; glEnable(GL_LINE_SMOOTH) ; //画摆线 glBegin(GL_LINES); glVertex3f(x, y, 0.0); glVertex3f(0.0, 4.0, 0.0); glEnd(); //移动坐标系并画摆球 glTranslatef(x, y, 0.0) ; glutSolidSphere(0.3, 40, 40) ; glutSwapBuffers(); } /* void myIdle() { //读取文件数据 //通过加速度算X,Y值 //给XY 赋值 //没有定义时间频率 if(up) k += 0.5 ; else if(!up) k -= 0.5 ; if( k > 15) up = 0 ; if( k < -15) up = 1 ; x = 5.0*sin( PI*k/180.0 ) ; y = 5.0*( 1 - cos( PI*k/180.0 )) ; myDisplay() ; }*/ void TimerFunction(int value){ //k就是摆角 下面的IF 是 改变摆角的 你把IF 段注释 然后 在这里用 函数 得到 K 就可以了 。 下面的X Y就是 摆球的中心 if(up) k += 0.5 ; else if(!up) k -= 0.5 ; if( k > 30) up = 0 ; if( k < -30) up = 1 ; x = 5.0*sin( PI*k/180.0 ) ; y = 5.0*( 1 - cos( PI*k/180.0 )) ; glutPostRedisplay(); glutTimerFunc(5,TimerFunction,1); } int main(int argc, char* argv[]) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE|GLUT_DEPTH); glutInitWindowPosition(100, 100); glutInitWindowSize(WIDTH, HEIGHT); glutCreateWindow("单摆光照演示"); init(); glutDisplayFunc(myDisplay); //glutIdleFunc(myIdle); glutTimerFunc(5,TimerFunction,1); glutMainLoop(); return 0; }