3 * Copyright (C) 2006-2007 Mathias Froehlich
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 #ifndef SG_SCALE_TRANSFORM_HXX
23 #define SG_SCALE_TRANSFORM_HXX
25 #include <osg/Transform>
26 #include <simgear/math/SGMath.hxx>
28 class SGScaleTransform : public osg::Transform {
31 SGScaleTransform(const SGScaleTransform&,
32 const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
34 META_Node(simgear, SGScaleTransform);
36 void setCenter(const SGVec3f& center)
37 { setCenter(toVec3d(center)); }
38 void setCenter(const SGVec3d& center)
39 { _center = center; dirtyBound(); }
40 const SGVec3d& getCenter() const
43 void setScaleFactor(const SGVec3d& scaleFactor)
45 double boundScale = normI(scaleFactor);
46 if (_boundScale < boundScale || 5*boundScale < _boundScale) {
47 _boundScale = boundScale;
50 _scaleFactor = scaleFactor;
52 void setScaleFactor(double scaleFactor)
54 double boundScale = fabs(scaleFactor);
55 if (_boundScale < boundScale || 5*boundScale < _boundScale) {
56 _boundScale = boundScale;
59 _scaleFactor = SGVec3d(scaleFactor, scaleFactor, scaleFactor);
61 const SGVec3d& getScaleFactor() const
62 { return _scaleFactor; }
65 virtual bool computeLocalToWorldMatrix(osg::Matrix& matrix,
66 osg::NodeVisitor* nv) const;
67 virtual bool computeWorldToLocalMatrix(osg::Matrix& matrix,
68 osg::NodeVisitor* nv) const;
69 virtual osg::BoundingSphere computeBound() const;
74 mutable double _boundScale;