FGFS-4.1/OpenSceneGraph
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Set up new view dependent overlay technique control methods

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This commit is contained in:
Robert Osfield
2007-05-14 20:23:10 +00:00
parent 55bd6129f4
commit e41cd46da8
3 changed files with 110 additions and 12 deletions
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87
src/osgSim/OverlayNode.cpp
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@@ -22,7 +22,8 @@
using namespace osgSim;
using namespace osg;
OverlayNode::OverlayNode():
OverlayNode::OverlayNode(OverlayTechnique technique):
_overlayTechnique(technique),
_texEnvMode(GL_DECAL),
_textureUnit(1),
_textureSizeHint(1024),
@@ -35,6 +36,7 @@ OverlayNode::OverlayNode():
OverlayNode::OverlayNode(const OverlayNode& copy, const osg::CopyOp& copyop):
osg::Group(copy,copyop),
_overlayTechnique(copy._overlayTechnique),
_overlaySubgraph(copy._overlaySubgraph),
_texEnvMode(copy._texEnvMode),
_textureUnit(copy._textureUnit),
@@ -78,8 +80,34 @@ void OverlayNode::releaseGLObjects(osg::State* state) const
if (_texture.valid()) _texture->releaseGLObjects(state);
}
void OverlayNode::setOverlayTechnique(OverlayTechnique technique)
{
if (_overlayTechnique==technique) return;
_overlayTechnique = technique;
init();
}
void OverlayNode::init()
{
switch(_overlayTechnique)
{
case(OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY):
init_OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY();
break;
case(VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY):
init_VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY();
break;
case(VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY):
init_VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY();
break;
}
}
void OverlayNode::init_OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY()
{
osg::notify(osg::NOTICE)<<"OverlayNode::init() - OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY"<<std::endl;
unsigned int tex_width = _textureSizeHint;
unsigned int tex_height = _textureSizeHint;
@@ -125,8 +153,33 @@ void OverlayNode::init()
setOverlayTextureUnit(_textureUnit);
}
void OverlayNode::init_VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY()
{
osg::notify(osg::NOTICE)<<"OverlayNode::init() - VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY"<<std::endl;
}
void OverlayNode::init_VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY()
{
osg::notify(osg::NOTICE)<<"OverlayNode::init() - VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY"<<std::endl;
}
void OverlayNode::traverse(osg::NodeVisitor& nv)
{
switch(_overlayTechnique)
{
case(OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY):
traverse_OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY(nv);
break;
case(VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY):
traverse_VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY(nv);
break;
case(VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY):
traverse_VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY(nv);
break;
}
}
void OverlayNode::traverse_OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY(osg::NodeVisitor& nv)
{
if (nv.getVisitorType() == osg::NodeVisitor::UPDATE_VISITOR)
{
@@ -276,14 +329,28 @@ void OverlayNode::traverse(osg::NodeVisitor& nv)
}
}
void OverlayNode::traverse_VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY(osg::NodeVisitor& nv)
{
osg::notify(osg::NOTICE)<<"OverlayNode::traverse() - VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY"<<std::endl;
}
void OverlayNode::traverse_VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY(osg::NodeVisitor& nv)
{
osg::notify(osg::NOTICE)<<"OverlayNode::traverse() - VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY"<<std::endl;
}
void OverlayNode::setOverlaySubgraph(osg::Node* node)
{
if (_overlaySubgraph == node) return;
_overlaySubgraph = node;
_camera->removeChildren(0, _camera->getNumChildren());
_camera->addChild(node);
if (_camera.valid())
{
_camera->removeChildren(0, _camera->getNumChildren());
_camera->addChild(node);
}
dirtyOverlayTexture();
}
@@ -296,12 +363,12 @@ void OverlayNode::dirtyOverlayTexture()
void OverlayNode::setOverlayClearColor(const osg::Vec4& color)
{
_camera->setClearColor(color);
if (_camera.valid()) _camera->setClearColor(color);
}
const osg::Vec4& OverlayNode::getOverlayClearColor() const
osg::Vec4 OverlayNode::getOverlayClearColor() const
{
return _camera->getClearColor();
return _camera.valid() ? _camera->getClearColor() : osg::Vec4(1.0f,1.0f,1.0f,1.0f);
}
@@ -316,7 +383,7 @@ void OverlayNode::setOverlayTextureUnit(unsigned int unit)
{
_textureUnit = unit;
_texgenNode->setTextureUnit(_textureUnit);
if (_texgenNode.valid()) _texgenNode->setTextureUnit(_textureUnit);
updateMainSubgraphStateSet();
}
@@ -327,12 +394,14 @@ void OverlayNode::setOverlayTextureSizeHint(unsigned int size)
_textureSizeHint = size;
//_texture->dirtyTextureObject();
_texture->setTextureSize(_textureSizeHint, _textureSizeHint);
_camera->setViewport(0,0,_textureSizeHint,_textureSizeHint);
if (_texture.valid()) _texture->setTextureSize(_textureSizeHint, _textureSizeHint);
if (_camera.valid()) _camera->setViewport(0,0,_textureSizeHint,_textureSizeHint);
}
void OverlayNode::updateMainSubgraphStateSet()
{
if (!_mainSubgraphStateSet) return;
_mainSubgraphStateSet->clear();
_mainSubgraphStateSet->setTextureAttributeAndModes(_textureUnit, _texture.get(), osg::StateAttribute::ON);
_mainSubgraphStateSet->setTextureMode(_textureUnit, GL_TEXTURE_GEN_S, osg::StateAttribute::ON);