//-----------------------------------------------------------------------
Real Node::getSquaredViewDepth(const Camera* cam) const
{
Vector3 diff = _getDerivedPosition() - cam->getDerivedPosition();
// NB use squared length rather than real depth to avoid square root
return diff.squaredLength();
}
//---------------------------------------------------------------------
void Bone::setBindingPose(void)
{
setInitialState();
// Save inverse derived position/scale/orientation, used for calculate offset transform later
mBindDerivedInversePosition = - _getDerivedPosition();
mBindDerivedInverseScale = Vector3::UNIT_SCALE / _getDerivedScale();
mBindDerivedInverseOrientation = _getDerivedOrientation().Inverse();
}
// [7/30/2008 zhangxiang]
const Matrix4 &sgNode::getFullTransform(void) const{
if(m_bCachedTransformOutOfDate){
// Use derived values
m_CachedTransform.makeTransform(
_getDerivedPosition(),
_getDerivedScale(),
_getDerivedOrientation());
m_bCachedTransformOutOfDate = false;
}
return m_CachedTransform;
}
//-----------------------------------------------------------------------
bool InstancedEntity::findVisible( Camera *camera ) const
{
//Object is active
bool retVal = isInScene();
if (retVal)
{
//check object is explicitly visible
retVal = isVisible();
//Object's bounding box is viewed by the camera
if( retVal && camera )
retVal = camera->isVisible(Sphere(_getDerivedPosition(),getBoundingRadius()));
}
return retVal;
}
//---------------------------------------------------------------------
void Bone::_getOffsetTransform(Matrix4& m) const
{
// Combine scale with binding pose inverse scale,
// NB just combine as equivalent axes, no shearing
Vector3 scale = _getDerivedScale() * mBindDerivedInverseScale;
// Combine orientation with binding pose inverse orientation
Quaternion rotate = _getDerivedOrientation() * mBindDerivedInverseOrientation;
// Combine position with binding pose inverse position,
// Note that translation is relative to scale & rotation,
// so first reverse transform original derived position to
// binding pose bone space, and then transform to current
// derived bone space.
Vector3 translate = _getDerivedPosition() + rotate * (scale * mBindDerivedInversePosition);
m.makeTransform(translate, scale, rotate);
}
//-----------------------------------------------------------------------
Real Node::getSquaredViewDepth(const Camera* cam) const
{
Vector3 diff = _getDerivedPosition() - cam->getDerivedPosition();
#if 1
Matrix4 viewObectMat;
if (cam)
{
Matrix4 viewMat(cam->getViewMatrix(false));
Matrix4 objMat(_getFullTransform());
viewObectMat =viewMat * objMat ;
}
viewObectMat.getTrans(diff);
diff.x =0;
diff.z =0;
#endif
// NB use squared length rather than real depth to avoid square root
return diff.squaredLength();
}
//-----------------------------------------------------------------------
void SceneNode::lookAt( const Vector3& targetPoint, TransformSpace relativeTo,
const Vector3& localDirectionVector)
{
// Calculate ourself origin relative to the given transform space
Vector3 origin;
switch (relativeTo)
{
default: // Just in case
case TS_WORLD:
origin = _getDerivedPosition();
break;
case TS_PARENT:
origin = mPosition;
break;
case TS_LOCAL:
origin = Vector3::ZERO;
break;
}
setDirection(targetPoint - origin, relativeTo, localDirectionVector);
}
/** Save the node's current position as the previous position
*/
void PCZSceneNode::savePrevPosition(void)
{
mPrevPosition = _getDerivedPosition();
}
//-----------------------------------------------------------------------
const Vector3& Node::getWorldPosition(void) const
{
return _getDerivedPosition();
}
//-----------------------------------------------------------------------
Real InstancedEntity::getSquaredViewDepth( const Camera* cam ) const
{
return _getDerivedPosition().squaredDistance(cam->getDerivedPosition());
}
// [7/30/2008 zhangxiang] mabe a bug...
void sgNode::setAbsolutePosition(const Vector3 &aPos){
Vector3 aTranslate = aPos - _getDerivedPosition();
translate(aTranslate, TS_PARENT);
}
// [8/2/2008 zhangxiang]
Vector3 sgNode::position(void) const{
return _getDerivedPosition();
}
// [7/30/2008 zhangxiang]
const Vector3 &sgNode::absolutePosition(void) const{
return _getDerivedPosition();
}
