轉轉轉

void keyboard(unsigned char key,int x,int y)
{
if(key=='a')angleX+=5;
if(key=='b')angleX-=5;
glutPostRedisplay();
}
//鍵盤事件

float angleX=0;

void keyboard(unsigned char key,int x,int y)

{

printf("%c %d %d\n",key,x,y);

if(key=='a')angleX+=5;

if(key=='b')angleX-=5;

glutPostRedisplay();

}

//鍵盤事件與滑鼠的座標

void myLight()

{

const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

}

//打光

void mouse(int button,int state,int x,int y)

{

printf("%d %d %d %d\n",button,state,x,y);

startX=x;

}

void motion(int x,int y)

{

printf("%d %d\n",x,y);

angleX=x-startX;

glutPostRedisplay();

}

//滑鼠事件

float angleY=0,startY=0;

在 mouse 的函式裡面加入startY=y;

在 motion的還是裡面加入 angleY-y-startY;

//讓Y軸旋轉

float dist=sqrt(angleX*angleX + angleY*angleY);

glRotatef(dist,-angleY,-angleX,0);

glMultMatrixf(m);

glGetFloatv(GL_MODELVIEW_MATRIX,m);

//任意軸旋轉