From 0d4e96974672988078a4807e255ffc8abcb6baa8 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 24 Jan 2003 09:37:56 +0000
Subject: [PATCH] Added support for osg::Transform::asMatrixTransform,
 asPositionAttitudeTransform and as DOFTransform.

---
 include/osg/DOFTransform              | 3 +++
 include/osg/MatrixTransform           | 4 ++++
 include/osg/PositionAttitudeTransform | 2 ++
 include/osg/Transform                 | 9 +++++++++
 4 files changed, 18 insertions(+)

diff --git a/include/osg/DOFTransform b/include/osg/DOFTransform
index 8f4ea6764..bb1fd62fd 100644
--- a/include/osg/DOFTransform
+++ b/include/osg/DOFTransform
@@ -52,6 +52,9 @@ class SG_EXPORT DOFTransform : public Transform
 
         META_Node(osg, DOFTransform);
 
+        virtual DOFTransform* asDOFTransform() { return this; }
+        virtual const DOFTransform* asDOFTransform() const { return this; }
+
         virtual void traverse(NodeVisitor& nv);
 
         void setMinHPR(const Vec3& hpr) { _minHPR = hpr;}
diff --git a/include/osg/MatrixTransform b/include/osg/MatrixTransform
index 6f27002c4..8bd9dd924 100644
--- a/include/osg/MatrixTransform
+++ b/include/osg/MatrixTransform
@@ -37,6 +37,10 @@ class SG_EXPORT MatrixTransform : public Transform
 
         META_Node(osg, MatrixTransform);
 
+        virtual MatrixTransform* asMatrixTransform() { return this; }
+        virtual const MatrixTransform* asMatrixTransform() const { return this; }
+
+
         /** Set the transform's matrix.*/
         void setMatrix(const Matrix& mat) { _matrix = mat; _inverseDirty=true; dirtyBound(); }
         
diff --git a/include/osg/PositionAttitudeTransform b/include/osg/PositionAttitudeTransform
index 4021fc8f5..16e97f581 100644
--- a/include/osg/PositionAttitudeTransform
+++ b/include/osg/PositionAttitudeTransform
@@ -38,6 +38,8 @@ class SG_EXPORT PositionAttitudeTransform : public Transform
 
         META_Node(osg, PositionAttitudeTransform);
 
+        virtual PositionAttitudeTransform* asPositionAttitudeTransform() { return this; }
+        virtual const PositionAttitudeTransform* asPositionAttitudeTransform() const { return this; }
 
         inline void setPosition(const Vec3& pos) { _position = pos; dirtyBound(); }
         
diff --git a/include/osg/Transform b/include/osg/Transform
index e1c6707be..5c5cff45b 100644
--- a/include/osg/Transform
+++ b/include/osg/Transform
@@ -57,6 +57,15 @@ class SG_EXPORT Transform : public Group
         virtual Transform* asTransform() { return this; }
         virtual const Transform* asTransform() const { return this; }
 
+        virtual MatrixTransform* asMatrixTransform() { return 0; }
+        virtual const MatrixTransform* asMatrixTransform() const { return 0; }
+
+        virtual PositionAttitudeTransform* asPositionAttitudeTransform() { return 0; }
+        virtual const PositionAttitudeTransform* asPositionAttitudeTransform() const { return 0; }
+
+        virtual DOFTransform* asDOFTransform() { return 0; }
+        virtual const DOFTransform* asDOFTransform() const { return 0; }
+
         enum ReferenceFrame
         {
             RELATIVE_TO_PARENTS,