1 // Owner Drawn Gauge helper class
3 // Written by Harald JOHNSEN, started May 2005.
5 // Copyright (C) 2005 Harald JOHNSEN
7 // Ported to OSG by Tim Moore - Jun 2007
9 // Heavily modified to be usable for the 2d Canvas by Thomas Geymayer - April 2012
10 // Supports now multisampling/mipmapping, usage of the stencil buffer and placing
11 // the texture in the scene by certain filter criteria
13 // This program is free software; you can redistribute it and/or
14 // modify it under the terms of the GNU General Public License as
15 // published by the Free Software Foundation; either version 2 of the
16 // License, or (at your option) any later version.
18 // This program is distributed in the hope that it will be useful, but
19 // WITHOUT ANY WARRANTY; without even the implied warranty of
20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 // General Public License for more details.
23 // You should have received a copy of the GNU General Public License
24 // along with this program; if not, write to the Free Software
25 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
33 #include <osg/Texture2D>
34 #include <osg/AlphaFunc>
35 #include <osg/BlendFunc>
38 #include <osg/NodeVisitor>
40 #include <osg/PolygonMode>
41 #include <osg/ShadeModel>
42 #include <osg/StateSet>
43 #include <osg/FrameBufferObject> // for GL_DEPTH_STENCIL_EXT on Windows
45 #include <osgDB/FileNameUtils>
47 #include <simgear/canvas/CanvasObjectPlacement.hxx>
48 #include <simgear/scene/material/EffectGeode.hxx>
49 #include <simgear/scene/util/RenderConstants.hxx>
51 #include <Canvas/FGCanvasSystemAdapter.hxx>
52 #include <Main/globals.hxx>
53 #include <Scenery/scenery.hxx>
54 #include "od_gauge.hxx"
58 static simgear::canvas::SystemAdapterPtr system_adapter(
59 new canvas::FGCanvasSystemAdapter
62 //------------------------------------------------------------------------------
63 FGODGauge::FGODGauge()
65 setSystemAdapter(system_adapter);
68 //------------------------------------------------------------------------------
69 FGODGauge::~FGODGauge()
75 * Replace a texture in the airplane model with the gauge texture.
77 class ReplaceStaticTextureVisitor:
78 public osg::NodeVisitor
82 typedef osg::ref_ptr<osg::Group> GroupPtr;
83 typedef osg::ref_ptr<osg::Material> MaterialPtr;
85 ReplaceStaticTextureVisitor( const char* name,
86 osg::Texture2D* new_texture ):
87 osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
88 _tex_name( osgDB::getSimpleFileName(name) ),
89 _new_texture(new_texture),
93 ReplaceStaticTextureVisitor( SGPropertyNode* placement,
94 osg::Texture2D* new_texture,
95 osg::NodeCallback* cull_callback = 0,
96 const simgear::canvas::CanvasWeakPtr& canvas =
97 simgear::canvas::CanvasWeakPtr() ):
98 osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
99 _tex_name( osgDB::getSimpleFileName(
100 placement->getStringValue("texture"))
102 _node_name( placement->getStringValue("node") ),
103 _parent_name( placement->getStringValue("parent") ),
105 _new_texture(new_texture),
106 _cull_callback(cull_callback),
109 if( _tex_name.empty()
110 && _node_name.empty()
111 && _parent_name.empty() )
116 "No filter criterion for replacing texture. "
117 " Every texture will be replaced!"
122 * Get a list of groups which have been inserted into the scene graph to
123 * replace the given texture
125 simgear::canvas::Placements& getPlacements()
130 virtual void apply(osg::Geode& node)
132 simgear::EffectGeode* eg = dynamic_cast<simgear::EffectGeode*>(&node);
136 osg::StateSet* ss = eg->getEffect()->getDefaultStateSet();
140 osg::Group *parent = node.getParent(0);
141 if( !_node_name.empty() && getNodeName(*parent) != _node_name )
144 if( !_parent_name.empty() )
146 // Traverse nodes upwards starting at the parent node (skip current
148 const osg::NodePath& np = getNodePath();
150 for( int i = static_cast<int>(np.size()) - 2; i >= 0; --i )
152 const osg::Node* path_segment = np[i];
153 const osg::Node* path_parent = path_segment->getParent(0);
155 // A node without a name is always the parent of the root node of
156 // the model just containing the file name
157 if( path_parent && path_parent->getName().empty() )
160 if( path_segment->getName() == _parent_name )
171 for( size_t unit = 0; unit < ss->getNumTextureAttributeLists(); ++unit )
173 osg::Texture2D* tex = dynamic_cast<osg::Texture2D*>
175 ss->getTextureAttribute(unit, osg::StateAttribute::TEXTURE)
178 if( !tex || !tex->getImage() || tex == _new_texture )
181 if( !_tex_name.empty() )
183 std::string tex_name = tex->getImage()->getFileName();
184 std::string tex_name_simple = osgDB::getSimpleFileName(tex_name);
185 if( !osgDB::equalCaseInsensitive(_tex_name, tex_name_simple) )
189 // insert a new group between the geode an it's parent which overrides
191 GroupPtr group = new osg::Group;
192 group->setName("canvas texture group");
194 parent->removeChild(eg);
195 parent->addChild(group);
198 group->setCullCallback(_cull_callback);
200 osg::StateSet* stateSet = group->getOrCreateStateSet();
201 stateSet->setTextureAttribute( unit, _new_texture,
202 osg::StateAttribute::OVERRIDE );
203 stateSet->setTextureMode( unit, GL_TEXTURE_2D,
204 osg::StateAttribute::ON );
206 _placements.push_back( simgear::canvas::PlacementPtr(
207 new simgear::canvas::ObjectPlacement(_node, group, _canvas)
214 "Replaced texture '" << _tex_name << "'"
215 << " for object '" << parent->getName() << "'"
216 << (!_parent_name.empty() ? " with parent '" + _parent_name + "'"
225 std::string _tex_name, ///<! Name of texture to be replaced
226 _node_name, ///<! Only replace if node name matches
227 _parent_name; ///<! Only replace if any parent node matches
228 /// given name (all the tree upwards)
230 SGPropertyNode_ptr _node;
231 osg::Texture2D *_new_texture;
232 osg::NodeCallback *_cull_callback;
234 simgear::canvas::CanvasWeakPtr _canvas;
235 simgear::canvas::Placements _placements;
237 const std::string& getNodeName(const osg::Node& node) const
239 if( !node.getName().empty() )
240 return node.getName();
242 // Special handling for pick animation which clears the name of the object
243 // and instead sets the name of a parent group with one or two groups
244 // attached (one for normal rendering and one for the picking highlight).
245 osg::Group const* parent = node.getParent(0);
246 if( parent->getName() == "pick render group" )
247 return parent->getParent(0)->getName();
249 return node.getName();
253 //------------------------------------------------------------------------------
254 simgear::canvas::Placements
255 FGODGauge::set_texture( osg::Node* branch,
257 osg::Texture2D* new_texture )
259 ReplaceStaticTextureVisitor visitor(name, new_texture);
260 branch->accept(visitor);
261 return visitor.getPlacements();
264 //------------------------------------------------------------------------------
265 simgear::canvas::Placements
266 FGODGauge::set_aircraft_texture( const char* name,
267 osg::Texture2D* new_texture )
271 globals->get_scenery()->get_aircraft_branch(),
277 //------------------------------------------------------------------------------
278 simgear::canvas::Placements
279 FGODGauge::set_texture( osg::Node* branch,
280 SGPropertyNode* placement,
281 osg::Texture2D* new_texture,
282 osg::NodeCallback* cull_callback,
283 const simgear::canvas::CanvasWeakPtr& canvas )
285 ReplaceStaticTextureVisitor visitor( placement,
289 branch->accept(visitor);
290 return visitor.getPlacements();
293 //------------------------------------------------------------------------------
294 simgear::canvas::Placements
295 FGODGauge::set_aircraft_texture( SGPropertyNode* placement,
296 osg::Texture2D* new_texture,
297 osg::NodeCallback* cull_callback,
298 const simgear::canvas::CanvasWeakPtr& canvas )
302 globals->get_scenery()->get_aircraft_branch(),