blender/source/gameengine/Ketsji/KX_SG_NodeRelationships.cpp
Chris Want 5d0a207ecb Patch from GSR that a) fixes a whole bunch of GPL/BL license
blocks that were previously missed; and b) greatly increase my
ohloh stats!
2008-04-16 22:40:48 +00:00

337 lines
7.5 KiB
C++

/**
* $Id$
* ***** BEGIN GPL 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.
*
* 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 LICENSE BLOCK *****
*/
#include "KX_SG_NodeRelationships.h"
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/**
* Implementation of classes defined in KX_SG_NodeRelationships.h
*/
/**
* first of all KX_NormalParentRelation
*/
KX_NormalParentRelation *
KX_NormalParentRelation::
New(
) {
return new KX_NormalParentRelation();
}
bool
KX_NormalParentRelation::
UpdateChildCoordinates(
SG_Spatial * child,
const SG_Spatial * parent
){
MT_assert(child != NULL);
// This way of accessing child coordinates is a bit cumbersome
// be nice to have non constant reference access to these values.
const MT_Vector3 & child_scale = child->GetLocalScale();
const MT_Point3 & child_pos = child->GetLocalPosition();
const MT_Matrix3x3 & child_rotation = child->GetLocalOrientation();
// the childs world locations which we will update.
MT_Vector3 child_w_scale;
MT_Point3 child_w_pos;
MT_Matrix3x3 child_w_rotation;
if (parent) {
const MT_Vector3 & p_world_scale = parent->GetWorldScaling();
const MT_Point3 & p_world_pos = parent->GetWorldPosition();
const MT_Matrix3x3 & p_world_rotation = parent->GetWorldOrientation();
child_w_scale = p_world_scale * child_scale;
child_w_rotation = p_world_rotation * child_rotation;
child_w_pos = p_world_pos + p_world_scale *
(p_world_rotation * child_pos);
} else {
child_w_scale = child_scale;
child_w_pos = child_pos;
child_w_rotation = child_rotation;
}
child->SetWorldScale(child_w_scale);
child->SetWorldPosition(child_w_pos);
child->SetWorldOrientation(child_w_rotation);
return parent != NULL;
}
SG_ParentRelation *
KX_NormalParentRelation::
NewCopy(
){
return new KX_NormalParentRelation();
}
KX_NormalParentRelation::
~KX_NormalParentRelation(
){
//nothing to do
}
KX_NormalParentRelation::
KX_NormalParentRelation(
){
// nothing to do
}
/**
* Next KX_VertexParentRelation
*/
KX_VertexParentRelation *
KX_VertexParentRelation::
New(
){
return new KX_VertexParentRelation();
}
/**
* Method inherited from KX_ParentRelation
*/
bool
KX_VertexParentRelation::
UpdateChildCoordinates(
SG_Spatial * child,
const SG_Spatial * parent
){
MT_assert(child != NULL);
const MT_Vector3 & child_scale = child->GetLocalScale();
const MT_Point3 & child_pos = child->GetLocalPosition();
const MT_Matrix3x3 & child_rotation = child->GetLocalOrientation();
// the childs world locations which we will update.
MT_Vector3 child_w_scale;
MT_Point3 child_w_pos;
MT_Matrix3x3 child_w_rotation;
if (parent) {
// This is a vertex parent so we do not inherit orientation
// information.
// const MT_Vector3 & p_world_scale = parent->GetWorldScaling(); /*unused*/
const MT_Point3 & p_world_pos = parent->GetWorldPosition();
// const MT_Matrix3x3 & p_world_rotation = parent->GetWorldOrientation(); /*unused*/
child_w_scale = child_scale;
child_w_rotation = child_rotation;
child_w_pos = p_world_pos + child_pos;
} else {
child_w_scale = child_scale;
child_w_pos = child_pos;
child_w_rotation = child_rotation;
}
child->SetWorldScale(child_w_scale);
child->SetWorldPosition(child_w_pos);
child->SetWorldOrientation(child_w_rotation);
return parent != NULL;
}
/**
* Method inherited from KX_ParentRelation
*/
SG_ParentRelation *
KX_VertexParentRelation::
NewCopy(
){
return new KX_VertexParentRelation();
};
KX_VertexParentRelation::
~KX_VertexParentRelation(
){
//nothing to do
}
KX_VertexParentRelation::
KX_VertexParentRelation(
){
//nothing to do
}
/**
* Slow parent relationship
*/
KX_SlowParentRelation *
KX_SlowParentRelation::
New(
MT_Scalar relaxation
){
return new KX_SlowParentRelation(relaxation);
}
/**
* Method inherited from KX_ParentRelation
*/
bool
KX_SlowParentRelation::
UpdateChildCoordinates(
SG_Spatial * child,
const SG_Spatial * parent
){
MT_assert(child != NULL);
const MT_Vector3 & child_scale = child->GetLocalScale();
const MT_Point3 & child_pos = child->GetLocalPosition();
const MT_Matrix3x3 & child_rotation = child->GetLocalOrientation();
// the childs world locations which we will update.
MT_Vector3 child_w_scale;
MT_Point3 child_w_pos;
MT_Matrix3x3 child_w_rotation;
if (parent) {
// This is a slow parent relation
// first compute the normal child world coordinates.
MT_Vector3 child_n_scale;
MT_Point3 child_n_pos;
MT_Matrix3x3 child_n_rotation;
const MT_Vector3 & p_world_scale = parent->GetWorldScaling();
const MT_Point3 & p_world_pos = parent->GetWorldPosition();
const MT_Matrix3x3 & p_world_rotation = parent->GetWorldOrientation();
child_n_scale = p_world_scale * child_scale;
child_n_rotation = p_world_rotation * child_rotation;
child_n_pos = p_world_pos + p_world_scale *
(p_world_rotation * child_pos);
if (m_initialized) {
// get the current world positions
child_w_scale = child->GetWorldScaling();
child_w_pos = child->GetWorldPosition();
child_w_rotation = child->GetWorldOrientation();
// now 'interpolate' the normal coordinates with the last
// world coordinates to get the new world coordinates.
// problem 1:
// The child world scale needs to be initialized in some way for this
// to make sense
// problem 2:
// This is way of doing interpolation is nonsense
int i;
MT_Scalar weight = MT_Scalar(1)/(m_relax + 1);
for (i=0;i <3 ;i++) {
child_w_scale[i] = (m_relax * child_w_scale[i] + child_n_scale[i]) * weight;
child_w_pos[i] = (m_relax * child_w_pos[i] + child_n_pos[i]) * weight;
child_w_rotation[0][i] = (m_relax * child_w_rotation[0][i] + child_n_rotation[0][i]) * weight;
child_w_rotation[1][i] = (m_relax * child_w_rotation[1][i] + child_n_rotation[1][i]) * weight;
child_w_rotation[2][i] = (m_relax * child_w_rotation[2][i] + child_n_rotation[2][i]) * weight;
}
//FIXME: update physics controller.
} else {
child_w_scale = child_n_scale;
child_w_pos = child_n_pos;
child_w_rotation = child_n_rotation;
m_initialized = true;
}
} else {
child_w_scale = child_scale;
child_w_pos = child_pos;
child_w_rotation = child_rotation;
}
child->SetWorldScale(child_w_scale);
child->SetWorldPosition(child_w_pos);
child->SetWorldOrientation(child_w_rotation);
return parent != NULL;
}
/**
* Method inherited from KX_ParentRelation
*/
SG_ParentRelation *
KX_SlowParentRelation::
NewCopy(
){
return new KX_SlowParentRelation(m_relax);
}
KX_SlowParentRelation::
KX_SlowParentRelation(
MT_Scalar relaxation
):
m_relax(relaxation),
m_initialized(false)
{
//nothing to do
}
KX_SlowParentRelation::
~KX_SlowParentRelation(
){
//nothing to do
}