Introduced osgVolume::Layer and Locator classes mirrroring similar classes in osgTerrain.

src/osgVolume/Layer.cpp

@@ -0,0 +1,103 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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 <osgVolume/Layer>
+
+using namespace osgVolume;
+
+Layer::Layer():
+    _minFilter(osg::Texture::LINEAR_MIPMAP_LINEAR),
+    _magFilter(osg::Texture::LINEAR)
+{
+}
+
+Layer::Layer(const Layer& layer,const osg::CopyOp& copyop):
+    osg::Object(layer,copyop),
+    _filename(layer._filename),
+    _minFilter(layer._minFilter),
+    _magFilter(layer._magFilter)
+{
+}
+
+Layer::~Layer()
+{
+}
+
+osg::BoundingSphere Layer::computeBound() const
+{
+    if (!getLocator()) return osg::BoundingSphere();
+    
+    osg::Vec3d left, right;
+    getLocator()->computeLocalBounds(left, right);
+
+    return osg::BoundingSphere((left+right)*0.5, (right-left).length()*0.5);
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// ImageLayer
+//
+ImageLayer::ImageLayer(osg::Image* image):
+    _image(image)
+{
+}
+
+ImageLayer::ImageLayer(const ImageLayer& imageLayer,const osg::CopyOp& copyop):
+    Layer(imageLayer, copyop),
+    _image(imageLayer._image)
+{
+}
+
+void ImageLayer::setImage(osg::Image* image)
+{
+    _image = image;
+}
+
+void ImageLayer::dirty()
+{
+    if (_image.valid()) _image->dirty();
+}
+
+void ImageLayer::setModifiedCount(unsigned int value)
+{
+    if (!_image) return;
+    else _image->setModifiedCount(value);
+}
+
+unsigned int ImageLayer::getModifiedCount() const
+{
+    if (!_image) return 0;
+    else return _image->getModifiedCount();
+}
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// CompositeLayer
+//
+CompositeLayer::CompositeLayer()
+{
+}
+
+CompositeLayer::CompositeLayer(const CompositeLayer& compositeLayer,const osg::CopyOp& copyop):
+    Layer(compositeLayer,copyop)
+{
+}
+
+
+void CompositeLayer::clear()
+{
+    _layers.clear();
+}