Initial revision

source/gameengine/SceneGraph/SG_Spatial.cpp

@@ -0,0 +1,283 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+
+#include "SG_Node.h"
+#include "SG_Spatial.h"
+#include "SG_Controller.h"
+#include "SG_ParentRelation.h"
+
+SG_Spatial::
+SG_Spatial(
+	void* clientobj,
+	void* clientinfo,
+	SG_Callbacks callbacks
+): 
+
+	SG_IObject(clientobj,clientinfo,callbacks),
+	m_localPosition(MT_Point3(0,0,0)),
+	m_localScaling(MT_Vector3(1.f,1.f,1.f)),
+	m_localRotation(1,0,0,0,1,0,0,0,1),
+	m_parent_relation (NULL),
+
+	m_worldPosition(MT_Point3(0,0,0)),
+	m_worldScaling(MT_Vector3(1.f,1.f,1.f)),
+	m_worldRotation(0,0,0,0,0,0,0,0,0)
+
+{
+}
+
+SG_Spatial::
+SG_Spatial(
+	const SG_Spatial& other
+) : 
+	SG_IObject(other),
+	m_localPosition(other.m_localPosition),
+	m_localScaling(other.m_localScaling),
+	m_localRotation(other.m_localRotation),
+	m_parent_relation(NULL),
+	m_worldPosition(other.m_worldPosition),
+	m_worldScaling(other.m_worldScaling),
+	m_worldRotation(other.m_worldRotation)
+{
+	// duplicate the parent relation for this object
+	m_parent_relation = other.m_parent_relation->NewCopy();
+}
+	
+SG_Spatial::
+~SG_Spatial()
+{
+	delete (m_parent_relation);
+}
+
+	void
+SG_Spatial::
+SetParentRelation(
+	SG_ParentRelation *relation
+){
+	delete (m_parent_relation);
+	m_parent_relation = relation;
+}
+
+
+/**
+ * Update Spatial Data.
+ * Calculates WorldTransform., (either doing itsself or using the linked SGControllers)
+ */
+
+
+	void 
+SG_Spatial::
+UpdateSpatialData(
+	const SG_Spatial *parent,
+	double time
+){
+
+    bool bComputesWorldTransform = false;
+
+	// update spatial controllers
+	
+	SGControllerList::iterator cit = GetSGControllerList().begin();
+	SGControllerList::const_iterator c_end = GetSGControllerList().end();
+
+	for (;cit!=c_end;++cit)
+	{
+		bComputesWorldTransform = bComputesWorldTransform || (*cit)->Update(time);
+	}
+
+	// If none of the objects updated our values then we ask the
+	// parent_relation object owned by this class to update 
+	// our world coordinates.
+
+	if (!bComputesWorldTransform)
+    {
+		ComputeWorldTransforms(parent);
+    }
+}
+
+void	SG_Spatial::ComputeWorldTransforms(const SG_Spatial *parent)
+{
+	m_parent_relation->UpdateChildCoordinates(this,parent);
+}
+
+
+/**
+ * Position and translation methods
+ */
+
+
+	void 
+SG_Spatial::
+RelativeTranslate(
+	const MT_Vector3& trans,
+	const SG_Spatial *parent,
+	bool local
+){
+	if (local) {
+			m_localPosition += m_localRotation * trans;
+	} else {
+		if (parent) {
+			m_localPosition += trans * parent->GetWorldOrientation();
+		} else {
+			m_localPosition += trans;
+		}
+	}
+}	
+	
+	void 
+SG_Spatial::
+SetLocalPosition(
+	const MT_Point3& trans
+){
+	m_localPosition = trans;
+}
+
+	void				
+SG_Spatial::
+SetWorldPosition(
+	const MT_Point3& trans
+) {
+	m_worldPosition = trans;
+}
+
+/**
+ * Scaling methods.
+ */ 
+
+	void 
+SG_Spatial::
+RelativeScale(
+	const MT_Vector3& scale
+){
+	m_localScaling = m_localScaling * scale;
+}
+
+	void 
+SG_Spatial::
+SetLocalScale(
+	const MT_Vector3& scale
+){
+	m_localScaling = scale;
+}
+
+
+	void				
+SG_Spatial::
+SetWorldScale(
+	const MT_Vector3& scale
+){ 
+	m_worldScaling = scale;
+}
+
+/**
+ * Orientation and rotation methods.
+ */
+
+
+	void 
+SG_Spatial::
+RelativeRotate(
+	const MT_Matrix3x3& rot,
+	bool local
+){
+	m_localRotation = m_localRotation * (
+	local ? 
+		rot 
+	:
+	(GetWorldOrientation().inverse() * rot * GetWorldOrientation()));
+}
+
+	void 
+SG_Spatial::
+SetLocalOrientation(const MT_Matrix3x3& rot)
+{
+	m_localRotation = rot;
+}
+
+
+
+	void				
+SG_Spatial::
+SetWorldOrientation(
+	const MT_Matrix3x3& rot
+) {
+	m_worldRotation = rot;
+}
+
+const 
+	MT_Point3&
+SG_Spatial::
+GetLocalPosition(
+) const	{
+	 return m_localPosition;
+}
+
+const 
+	MT_Matrix3x3&
+SG_Spatial::
+GetLocalOrientation(
+) const	{
+	return m_localRotation;
+}
+
+const 
+	MT_Vector3&	
+SG_Spatial::
+GetLocalScale(
+) const{
+	return m_localScaling;
+}
+
+
+const 
+	MT_Point3&
+SG_Spatial::
+GetWorldPosition(
+) const	{
+	return m_worldPosition;
+}
+
+const 
+	MT_Matrix3x3&	
+SG_Spatial::
+GetWorldOrientation(
+) const	{
+	return m_worldRotation;
+}
+
+const 
+	MT_Vector3&	
+SG_Spatial::
+GetWorldScaling(
+) const	{
+	return m_worldScaling;
+}
+