Filling in branch from trunk
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Martin Poirier
330
source/gameengine/SceneGraph/SG_Spatial.cpp
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330
source/gameengine/SceneGraph/SG_Spatial.cpp
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/**
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* $Id$
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*
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* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version. The Blender
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* Foundation also sells licenses for use in proprietary software under
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* the Blender License. See http://www.blender.org/BL/ for information
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* about this.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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*/
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#include "SG_Node.h"
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#include "SG_Spatial.h"
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#include "SG_Controller.h"
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#include "SG_ParentRelation.h"
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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SG_Spatial::
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SG_Spatial(
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void* clientobj,
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void* clientinfo,
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SG_Callbacks callbacks
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):
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SG_IObject(clientobj,clientinfo,callbacks),
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m_localPosition(MT_Point3(0.0,0.0,0.0)),
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m_localRotation(MT_Matrix3x3(1.0,0.0,0.0,0.0,1.0,0.0,0.0,0.0,1.0)),
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m_localScaling(MT_Vector3(1.f,1.f,1.f)),
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m_worldPosition(MT_Point3(0.0,0.0,0.0)),
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m_worldRotation(MT_Matrix3x3(1.0,0.0,0.0,0.0,1.0,0.0,0.0,0.0,1.0)),
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m_worldScaling(MT_Vector3(1.f,1.f,1.f)),
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m_parent_relation (NULL),
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m_bbox(MT_Point3(-1.0, -1.0, -1.0), MT_Point3(1.0, 1.0, 1.0)),
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m_radius(1.0)
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{
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}
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SG_Spatial::
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SG_Spatial(
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const SG_Spatial& other
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) :
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SG_IObject(other),
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m_localPosition(other.m_localPosition),
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m_localRotation(other.m_localRotation),
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m_localScaling(other.m_localScaling),
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m_worldPosition(other.m_worldPosition),
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m_worldRotation(other.m_worldRotation),
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m_worldScaling(other.m_worldScaling),
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m_parent_relation(NULL),
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m_bbox(other.m_bbox),
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m_radius(other.m_radius)
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{
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// duplicate the parent relation for this object
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m_parent_relation = other.m_parent_relation->NewCopy();
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}
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SG_Spatial::
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~SG_Spatial()
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{
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delete (m_parent_relation);
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}
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void
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SG_Spatial::
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SetParentRelation(
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SG_ParentRelation *relation
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){
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delete (m_parent_relation);
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m_parent_relation = relation;
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}
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/**
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* Update Spatial Data.
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* Calculates WorldTransform., (either doing itsself or using the linked SGControllers)
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*/
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bool
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SG_Spatial::
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UpdateSpatialData(
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const SG_Spatial *parent,
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double time
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){
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bool bComputesWorldTransform = false;
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// update spatial controllers
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SGControllerList::iterator cit = GetSGControllerList().begin();
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SGControllerList::const_iterator c_end = GetSGControllerList().end();
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for (;cit!=c_end;++cit)
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{
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if ((*cit)->Update(time))
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bComputesWorldTransform = true;
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}
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// If none of the objects updated our values then we ask the
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// parent_relation object owned by this class to update
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// our world coordinates.
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if (!bComputesWorldTransform)
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bComputesWorldTransform = ComputeWorldTransforms(parent);
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return bComputesWorldTransform;
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}
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bool SG_Spatial::ComputeWorldTransforms(const SG_Spatial *parent)
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{
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return m_parent_relation->UpdateChildCoordinates(this,parent);
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}
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/**
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* Position and translation methods
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*/
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void
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SG_Spatial::
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RelativeTranslate(
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const MT_Vector3& trans,
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const SG_Spatial *parent,
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bool local
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){
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if (local) {
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m_localPosition += m_localRotation * trans;
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} else {
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if (parent) {
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m_localPosition += trans * parent->GetWorldOrientation();
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} else {
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m_localPosition += trans;
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}
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}
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}
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void
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SG_Spatial::
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SetLocalPosition(
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const MT_Point3& trans
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){
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m_localPosition = trans;
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}
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void
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SG_Spatial::
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SetWorldPosition(
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const MT_Point3& trans
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) {
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m_worldPosition = trans;
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}
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/**
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* Scaling methods.
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*/
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void
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SG_Spatial::
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RelativeScale(
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const MT_Vector3& scale
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){
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m_localScaling = m_localScaling * scale;
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}
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void
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SG_Spatial::
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SetLocalScale(
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const MT_Vector3& scale
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){
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m_localScaling = scale;
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}
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void
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SG_Spatial::
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SetWorldScale(
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const MT_Vector3& scale
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){
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m_worldScaling = scale;
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}
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/**
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* Orientation and rotation methods.
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*/
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void
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SG_Spatial::
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RelativeRotate(
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const MT_Matrix3x3& rot,
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bool local
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){
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m_localRotation = m_localRotation * (
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local ?
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rot
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:
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(GetWorldOrientation().inverse() * rot * GetWorldOrientation()));
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}
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void
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SG_Spatial::
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SetLocalOrientation(const MT_Matrix3x3& rot)
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{
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m_localRotation = rot;
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}
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void
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SG_Spatial::
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SetWorldOrientation(
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const MT_Matrix3x3& rot
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) {
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m_worldRotation = rot;
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}
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const
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MT_Point3&
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SG_Spatial::
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GetLocalPosition(
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) const {
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return m_localPosition;
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}
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const
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MT_Matrix3x3&
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SG_Spatial::
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GetLocalOrientation(
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) const {
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return m_localRotation;
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}
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const
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MT_Vector3&
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SG_Spatial::
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GetLocalScale(
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) const{
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return m_localScaling;
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}
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const
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MT_Point3&
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SG_Spatial::
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GetWorldPosition(
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) const {
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return m_worldPosition;
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}
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const
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MT_Matrix3x3&
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SG_Spatial::
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GetWorldOrientation(
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) const {
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return m_worldRotation;
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}
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const
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MT_Vector3&
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SG_Spatial::
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GetWorldScaling(
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) const {
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return m_worldScaling;
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}
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SG_BBox& SG_Spatial::BBox()
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{
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return m_bbox;
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}
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void SG_Spatial::SetBBox(SG_BBox& bbox)
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{
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m_bbox = bbox;
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}
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MT_Transform SG_Spatial::GetWorldTransform() const
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{
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return MT_Transform(m_worldPosition,
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m_worldRotation.scaled(
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m_worldScaling[0], m_worldScaling[1], m_worldScaling[2]));
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}
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bool SG_Spatial::inside(const MT_Point3 &point) const
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{
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MT_Scalar radius = m_worldScaling[m_worldScaling.closestAxis()]*m_radius;
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return (m_worldPosition.distance2(point) <= radius*radius) ?
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m_bbox.transform(GetWorldTransform()).inside(point) :
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false;
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}
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void SG_Spatial::getBBox(MT_Point3 *box) const
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{
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m_bbox.get(box, GetWorldTransform());
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}
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void SG_Spatial::getAABBox(MT_Point3 *box) const
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{
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m_bbox.getaa(box, GetWorldTransform());
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}
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