void CCOrbitCamera::sphericalRadius(float *newRadius, float *zenith, float *azimuth)
{
    float ex, ey, ez, cx, cy, cz, x, y, z;
    float r; // radius
    float s;

    CCCamera* pCamera = m_pTarget->getCamera();
    pCamera->getEyeXYZ(&ex, &ey, &ez);
    pCamera->getCenterXYZ(&cx, &cy, &cz);

    x = ex-cx;
    y = ey-cy;
    z = ez-cz;

    r = sqrtf( powf(x,2) + powf(y,2) + powf(z,2));
    s = sqrtf( powf(x,2) + powf(y,2));
    if( s == 0.0f )
        s = FLT_EPSILON;
    if(r==0.0f)
        r = FLT_EPSILON;

    *zenith = acosf( z/r);
    if( x < 0 )
        *azimuth= (float)M_PI - asinf(y/s);
    else
        *azimuth = asinf(y/s);

    *newRadius = r / CCCamera::getZEye();                
}
示例#2
0
	//
	// CameraAction
	//
	void CCActionCamera::startWithTarget(CCNode *pTarget)
	{
		CCActionInterval::startWithTarget(pTarget);
		
		CCCamera *camera = pTarget->getCamera();
		camera->getCenterXYZ(&m_fCenterXOrig, &m_fCenterYOrig, &m_fCenterZOrig);
		camera->getEyeXYZ(&m_fEyeXOrig, &m_fEyeYOrig, &m_fEyeZOrig);
		camera->getUpXYZ(&m_fUpXOrig, &m_fUpYOrig, &m_fUpZOrig);
	}