Arthus week07

week7

滑鼠打光

step1:打開glut專案檔

在main中加入glutMotionFunc(motion);

step2:加入新的function

void motion(int x,int y)

{

    light_position[0]= (x-150)/150.0 *3;

    light_position[1]= -(y/150)/150.0 *2;

    glLightfv(GL_LIGHT0,GL_POSITION,light_position);

    glutPostRedisplay();

}

step3:把 const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };

的const刪掉

step4:完成