From Jay Zuckerman, fixes to AutoTransform so that it includes checking of

previous position value.
This commit is contained in:
Robert Osfield 2004-08-05 15:15:51 +00:00
parent 009cda4134
commit e9f4ed87bc
2 changed files with 215 additions and 207 deletions

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@ -1,106 +1,108 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library 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
* OpenSceneGraph Public License for more details.
*/
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_AUTOTRANSFORM
#define OSG_AUTOTRANSFORM 1
#ifndef OSG_AUTOTRANSFORM
#define OSG_AUTOTRANSFORM 1
#include <osg/AnimationPath>
#include <osg/Group>
#include <osg/Transform>
#include <osg/Quat>
#include <osg/Group>
#include <osg/Transform>
#include <osg/Quat>
namespace osg {
namespace osg {
/** AutoTransform - is Transform the automatically scales or rotates
* to keep its children relative to screen space coordinates.
*/
class SG_EXPORT AutoTransform : public Transform
{
public :
AutoTransform();
* to keep its children relative to screen space coordinates.
*/
class SG_EXPORT AutoTransform : public Transform
{
public :
AutoTransform();
AutoTransform(const AutoTransform& pat,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
AutoTransform(const AutoTransform& pat,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
virtual osg::Object* cloneType() const { return new AutoTransform (); }
virtual osg::Object* clone(const osg::CopyOp& copyop) const { return new AutoTransform (*this,copyop); }
virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const AutoTransform *>(obj)!=NULL; }
virtual const char* className() const { return "AutoTransform"; }
virtual const char* libraryName() const { return "osg"; }
virtual osg::Object* cloneType() const { return new AutoTransform (); }
virtual osg::Object* clone(const osg::CopyOp& copyop) const { return new AutoTransform (*this,copyop); }
virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const AutoTransform *>(obj)!=NULL; }
virtual const char* className() const { return "AutoTransform"; }
virtual const char* libraryName() const { return "osg"; }
virtual void accept(NodeVisitor& nv);
virtual void accept(NodeVisitor& nv);
virtual AutoTransform* asAutoTransform() { return this; }
virtual const AutoTransform* asAutoTransform() const { return this; }
virtual AutoTransform* asAutoTransform() { return this; }
virtual const AutoTransform* asAutoTransform() const { return this; }
inline void setPosition(const Vec3& pos) { _position = pos; _matrixDirty=true; dirtyBound(); }
inline const Vec3& getPosition() const { return _position; }
inline const Vec3& getPosition() const { return _position; }
inline void setRotation(const Quat& quat) { _rotation = quat; _matrixDirty=true; dirtyBound(); }
inline const Quat& getRotation() const { return _rotation; }
inline const Quat& getRotation() const { return _rotation; }
inline void setScale(float scale) { _scale.set(scale,scale,scale); _matrixDirty=true; dirtyBound(); }
inline void setScale(const Vec3& scale) { _scale = scale; dirtyBound(); }
inline const Vec3& getScale() const { return _scale; }
inline void setScale(const Vec3& scale) { _scale = scale; dirtyBound(); }
inline const Vec3& getScale() const { return _scale; }
inline void setPivotPoint(const Vec3& pivot) { _pivotPoint = pivot; _matrixDirty=true; dirtyBound(); }
inline const Vec3& getPivotPoint() const { return _pivotPoint; }
inline const Vec3& getPivotPoint() const { return _pivotPoint; }
void setAutoUpdateEyeMovementTolerance(float tolerance) { _autoUpdateEyeMovementTolerance = tolerance; }
float getAutoUpdateEyeMovementTolerance() const { return _autoUpdateEyeMovementTolerance; }
void setAutoUpdateEyeMovementTolerance(float tolerance) { _autoUpdateEyeMovementTolerance = tolerance; }
float getAutoUpdateEyeMovementTolerance() const { return _autoUpdateEyeMovementTolerance; }
void setAutoRotateToScreen(bool autoRotateToScreen) { _autoRotateToScreen = autoRotateToScreen; _matrixDirty=true; }
bool getAutoRotateToScreen() const { return _autoRotateToScreen; }
bool getAutoRotateToScreen() const { return _autoRotateToScreen; }
void setAutoScaleToScreen(bool autoScaleToScreen) { _autoScaleToScreen = autoScaleToScreen; _matrixDirty=true; }
bool getAutoScaleToScreen() const { return _autoScaleToScreen; }
bool getAutoScaleToScreen() const { return _autoScaleToScreen; }
virtual bool computeLocalToWorldMatrix(Matrix& matrix,NodeVisitor* nv) const;
virtual bool computeLocalToWorldMatrix(Matrix& matrix,NodeVisitor* nv) const;
virtual bool computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor* nv) const;
virtual bool computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor* nv) const;
protected :
virtual ~AutoTransform() {}
protected :
virtual ~AutoTransform() {}
Vec3 _position;
Vec3 _pivotPoint;
float _autoUpdateEyeMovementTolerance;
bool _autoRotateToScreen;
bool _autoScaleToScreen;
mutable Quat _rotation;
mutable Vec3 _scale;
mutable bool _firstTimeToInitEyePoint;
mutable osg::Vec3 _previousEyePoint;
mutable int _previousWidth;
mutable int _previousHeight;
mutable osg::Matrix _previousProjection;
mutable osg::Vec3 _previousPosition;
void computeMatrix() const;
mutable bool _matrixDirty;
mutable osg::Matrix _cachedMatrix;
};
Vec3 _position;
Vec3 _pivotPoint;
float _autoUpdateEyeMovementTolerance;
bool _autoRotateToScreen;
bool _autoScaleToScreen;
mutable Quat _rotation;
mutable Vec3 _scale;
mutable bool _firstTimeToInitEyePoint;
mutable osg::Vec3 _previousEyePoint;
mutable int _previousWidth;
mutable int _previousHeight;
mutable osg::Matrix _previousProjection;
}
void computeMatrix() const;
mutable bool _matrixDirty;
mutable osg::Matrix _cachedMatrix;
};
}
#endif
#endif

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@ -1,33 +1,33 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library 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
* OpenSceneGraph Public License for more details.
*/
#include <osg/AutoTransform>
#include <osg/CullStack>
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library 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
* OpenSceneGraph Public License for more details.
*/
#include <osg/AutoTransform>
#include <osg/CullStack>
using namespace osg;
using namespace osg;
AutoTransform::AutoTransform():
_autoUpdateEyeMovementTolerance(0.0f),
_autoRotateToScreen(false),
_autoScaleToScreen(false),
_scale(1.0f,1.0f,1.0f),
_firstTimeToInitEyePoint(true),
_matrixDirty(true)
{
// setNumChildrenRequiringUpdateTraversal(1);
}
AutoTransform::AutoTransform():
_autoUpdateEyeMovementTolerance(0.0f),
_autoRotateToScreen(false),
_autoScaleToScreen(false),
_scale(1.0f,1.0f,1.0f),
_firstTimeToInitEyePoint(true),
_matrixDirty(true)
{
// setNumChildrenRequiringUpdateTraversal(1);
}
AutoTransform::AutoTransform(const AutoTransform& pat,const CopyOp& copyop):
Transform(pat,copyop),
AutoTransform::AutoTransform(const AutoTransform& pat,const CopyOp& copyop):
Transform(pat,copyop),
_position(pat._position),
_pivotPoint(pat._pivotPoint),
_autoUpdateEyeMovementTolerance(pat._autoUpdateEyeMovementTolerance),
@ -37,131 +37,137 @@ AutoTransform::AutoTransform(const AutoTransform& pat,const CopyOp& copyop):
_scale(pat._scale),
_firstTimeToInitEyePoint(true),
_matrixDirty(true)
{
// setNumChildrenRequiringUpdateTraversal(getNumChildrenRequiringUpdateTraversal()+1);
}
{
// setNumChildrenRequiringUpdateTraversal(getNumChildrenRequiringUpdateTraversal()+1);
}
bool AutoTransform::computeLocalToWorldMatrix(Matrix& matrix,NodeVisitor*) const
{
if (_matrixDirty) computeMatrix();
if (_referenceFrame==RELATIVE_TO_PARENTS)
{
matrix.preMult(_cachedMatrix);
}
else // absolute
{
matrix = _cachedMatrix;
}
return true;
}
bool AutoTransform::computeLocalToWorldMatrix(Matrix& matrix,NodeVisitor*) const
{
if (_matrixDirty) computeMatrix();
if (_referenceFrame==RELATIVE_TO_PARENTS)
{
matrix.preMult(_cachedMatrix);
}
else // absolute
{
matrix = _cachedMatrix;
}
return true;
}
bool AutoTransform::computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor*) const
{
if (_referenceFrame==RELATIVE_TO_PARENTS)
{
matrix.postMult(osg::Matrix::translate(-_position)*
osg::Matrix::rotate(_rotation.inverse())*
osg::Matrix::scale(1.0f/_scale.x(),1.0f/_scale.y(),1.0f/_scale.z())*
osg::Matrix::translate(_pivotPoint));
}
else // absolute
{
matrix = osg::Matrix::translate(-_position)*
osg::Matrix::rotate(_rotation.inverse())*
osg::Matrix::scale(1.0f/_scale.x(),1.0f/_scale.y(),1.0f/_scale.z())*
osg::Matrix::translate(_pivotPoint);
}
return true;
}
bool AutoTransform::computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor*) const
{
if (_referenceFrame==RELATIVE_TO_PARENTS)
{
matrix.postMult(osg::Matrix::translate(-_position)*
osg::Matrix::rotate(_rotation.inverse())*
osg::Matrix::scale(1.0f/_scale.x(),1.0f/_scale.y(),1.0f/_scale.z())*
osg::Matrix::translate(_pivotPoint));
}
else // absolute
{
matrix = osg::Matrix::translate(-_position)*
osg::Matrix::rotate(_rotation.inverse())*
osg::Matrix::scale(1.0f/_scale.x(),1.0f/_scale.y(),1.0f/_scale.z())*
osg::Matrix::translate(_pivotPoint);
}
return true;
}
void AutoTransform::computeMatrix() const
{
if (!_matrixDirty) return;
_cachedMatrix.set(osg::Matrix::translate(-_pivotPoint)*
osg::Matrix::scale(_scale)*
osg::Matrix::rotate(_rotation)*
osg::Matrix::translate(_position));
_matrixDirty = false;
}
void AutoTransform::computeMatrix() const
{
if (!_matrixDirty) return;
_cachedMatrix.set(osg::Matrix::translate(-_pivotPoint)*
osg::Matrix::scale(_scale)*
osg::Matrix::rotate(_rotation)*
osg::Matrix::translate(_position));
_matrixDirty = false;
}
void AutoTransform::accept(NodeVisitor& nv)
{
// if app traversal update the frame count.
if (nv.getVisitorType()==NodeVisitor::UPDATE_VISITOR)
{
}
else
if (nv.getVisitorType()==NodeVisitor::CULL_VISITOR)
{
void AutoTransform::accept(NodeVisitor& nv)
{
// if app traversal update the frame count.
if (nv.getVisitorType()==NodeVisitor::UPDATE_VISITOR)
{
}
else
if (nv.getVisitorType()==NodeVisitor::CULL_VISITOR)
{
CullStack* cs = dynamic_cast<CullStack*>(&nv);
if (cs)
{
CullStack* cs = dynamic_cast<CullStack*>(&nv);
if (cs)
{
int width = _previousWidth;
int height = _previousHeight;
int width = _previousWidth;
int height = _previousHeight;
osg::Viewport* viewport = cs->getViewport();
if (viewport)
{
width = viewport->width();
height = viewport->height();
}
osg::Viewport* viewport = cs->getViewport();
if (viewport)
{
width = viewport->width();
height = viewport->height();
}
const osg::Vec3& eyePoint = cs->getEyeLocal();
osg::Vec3 eyePoint = cs->getEyeLocal();
osg::Vec3 position = getPosition();
const osg::Matrix& projection = cs->getProjectionMatrix();
bool doUpdate = _firstTimeToInitEyePoint;
if (!_firstTimeToInitEyePoint)
{
osg::Vec3 dv = _previousEyePoint-eyePoint;
if (dv.length2()>getAutoUpdateEyeMovementTolerance()*(eyePoint-getPosition()).length2())
{
doUpdate = true;
}
else if (width!=_previousWidth || height!=_previousHeight)
{
doUpdate = true;
}
bool doUpdate = _firstTimeToInitEyePoint;
if (!_firstTimeToInitEyePoint)
{
osg::Vec3 dv = _previousEyePoint-eyePoint;
if (dv.length2()>getAutoUpdateEyeMovementTolerance()*(eyePoint-getPosition()).length2())
{
doUpdate = true;
}
else if (width!=_previousWidth || height!=_previousHeight)
{
doUpdate = true;
}
else if (projection != _previousProjection)
{
doUpdate = true;
}
}
_firstTimeToInitEyePoint = false;
{
doUpdate = true;
}
else if (position != _previousPosition)
{
doUpdate = true;
}
}
_firstTimeToInitEyePoint = false;
if (doUpdate)
{
if (doUpdate)
{
if (getAutoScaleToScreen())
{
float size = 1.0f/cs->pixelSize(getPosition(),1.0f);
setScale(size);
}
if (getAutoScaleToScreen())
{
float size = 1.0f/cs->pixelSize(getPosition(),1.0f);
setScale(size);
}
if (getAutoRotateToScreen())
{
osg::Quat rotation;
cs->getModelViewMatrix().get(rotation);
setRotation(rotation.inverse());
}
if (getAutoRotateToScreen())
{
osg::Quat rotation;
cs->getModelViewMatrix().get(rotation);
setRotation(rotation.inverse());
}
_previousEyePoint = eyePoint;
_previousWidth = width;
_previousHeight = height;
_previousProjection = projection;
_previousEyePoint = eyePoint;
_previousWidth = width;
_previousHeight = height;
_previousProjection = projection;
_previousPosition = position;
_matrixDirty = true;
}
_matrixDirty = true;
}
}
}
// now do the proper accept
Transform::accept(nv);
}
}
}
// now do the proper accept
Transform::accept(nv);
}