ACG::SceneGraph Namespace Reference

Namespaces
	DrawModes
	GLSL
	This namespace contains all the classes and functions for handling GLSL shader and program objects.

Classes
class	ArrayResourceManagerNodeT
class	ArrowNode
class	BaseNode
class	BoundingBoxAction
class	BoundingBoxNode
class	BSplineCurveNodeT
class	BSplineSurfaceNodeT
class	CameraNode
class	CartesianClippingNode
class	CheckDirtyAction
class	ClippingNode
class	CollectActiveDrawModesAction
class	CollectDrawModesAction
class	CoordFrameNode
class	CoordinateSystemNode
	Node for displaying coordinate systems. More...
class	CoordsysNode
class	DrawAction
struct	enable_if
struct	enable_if< false, T >
class	EnvMapNode
class	FindNodeAction
class	GlutPrimitiveNode
class	GridNode
class	LightNode
class	LightSource
	Structure to hold options for one LightSource. More...
class	LightSourceHandle
class	LightSourceNode
class	LineNode
struct	LockModT
class	LockNodeT
class	ManipulatorNode
class	Material
class	MaterialNode
class	MeshNodeBase
class	MeshNodeT
class	MouseEventAction
class	MultiPassInfoAction
class	OBJNode
class	OSDTransformNode
class	PickAction
class	PointNode
class	PolyLineNodeT
class	PrincipalAxisNode
struct	PrincipalComponent
class	PtrResourceManagerNodeT
class	QtManipulatorNode
class	QtTranslationManipulatorNode
class	QtWidgetNode
class	QuadNode
struct	SelectionModT
class	SelectionNodeT
class	SeparatorNode
class	SetDrawModesAction
class	ShaderNode
class	SkeletonNodeT
class	SliceNode
class	SplatCloudNode
struct	StatusModT
class	StatusNodeBaseT
class	StatusNodeBaseT< Mesh, Mod, false >
class	StatusNodeBaseT< Mesh, Mod, true >
class	StatusNodeT
class	StatusViewNodeT
class	StencilRefNode
class	Strip
	class for managing a single triangle strip. More...
class	StripProcessorT
class	SwitchNode
class	TextNode
class	Texture3DNode
class	TextureNode
class	TextureRenderInfo
class	TrackballNode
class	TransformNode
class	TranslationManipulatorNode
class	TriangleNode
class	TriStripNodeDeprecatedT
class	VolumeMeshNodeT

Typedefs
typedef unsigned int	uint

Enumerations
enum	PickTarget {   PICK_CELL, PICK_FACE, PICK_EDGE, PICK_VERTEX,   PICK_ANYTHING, PICK_FRONT_EDGE, PICK_FRONT_VERTEX, PICK_SPLINE }
	What target to use for picking. More...

Functions
BaseNode *	find_node (BaseNode *_root, unsigned int _node_idx)
	Find a node in the scene graph. More...
BaseNode *	find_hidden_node (BaseNode *_root, unsigned int _node_idx)
	Find a node in the scene graph. More...
template<typename Action >
enable_if< has_enter< Action, void(Action::*)(BaseNode *) >::value, void >::type	if_has_enter (Action &_action, BaseNode *_node)
template<typename Action >
enable_if<!has_enter< Action, void(Action::*)(BaseNode *) >::value, void >::type	if_has_enter (Action &, BaseNode *)
template<typename Action >
enable_if< has_leave< Action, void(Action::*)(BaseNode *) >::value, void >::type	if_has_leave (Action &_action, BaseNode *_node)
template<typename Action >
enable_if<!has_enter< Action, void(Action::*)(BaseNode *) >::value, void >::type	if_has_leave (Action &, BaseNode *)
template<class Action >
void	traverse (BaseNode *_node, Action &_action)
template<class Action >
void	traverse_all (BaseNode *_node, Action &_action)
template<class Action >
void	traverse_multipass (BaseNode *_node, Action &_action, const unsigned int &_pass)
template<class Action >
void	traverse_multipass (BaseNode *_node, Action &_action, GLState &_state, DrawModes::DrawMode=DrawModes::DEFAULT)
void	analyzeSceneGraph (ACG::SceneGraph::BaseNode *_root, unsigned int &_maxPasses, ACG::Vec3d &_bbmin, ACG::Vec3d &_bbmax)
	Analyze the SceneGraph <ACG/Scenegraph/SceneGraphAnalysis.hh> More...
bool	stripTextureCompare (const Strip &i, const Strip &j)
	Compare function for sorting Strips depending on their texture index.
stream replacements
These stream provide replacements for clog, cout, and cerr. They have the advantage that they can easily be multiplexed. See also OpenMesh::mostream
OPENMESHDLLEXPORT OpenMesh::mostream &	omlog ()
OPENMESHDLLEXPORT OpenMesh::mostream &	omout ()
OPENMESHDLLEXPORT OpenMesh::mostream &	omerr ()

Variables
const Vec4f	cylinder_color (0.8f, 0.4f, 0.4f, 1.0f)
const Vec4f	sphere_color (0.8f, 0.4f, 0.4f, 1.0f)
const Vec4f	select_color (1.0f, 0.1f, 0.1f, 1.0f)
const float	SCALE_CONST = 5.0f
const Vec4f	colors [4][6]
const float	axis_length = 0.1f

Detailed Description

This namespace holds the ACG scene graph, all its nodes and helpers.

Enumeration Type Documentation

enum ACG::SceneGraph::PickTarget

What target to use for picking.

Enumerator
PICK_CELL	picks faces (may not be implemented for all nodes)
PICK_FACE	picks faces (should be implemented for all nodes)
PICK_EDGE	picks edges (may not be implemented for all nodes)
PICK_VERTEX	picks verices (may not be implemented for all nodes)
PICK_ANYTHING	pick any of the prior targets (should be implemented for all nodes)
PICK_FRONT_EDGE	picks only visible front edges (may not be implemented for all nodes)
PICK_FRONT_VERTEX	picks only visible front verices (may not be implemented for all nodes)
PICK_SPLINE	Pick spline curve or surface (picks u or u,v coords respectively)

Definition at line 99 of file BaseNode.hh.

Function Documentation

ACGDLLEXPORT void ACG::SceneGraph::analyzeSceneGraph	(	ACG::SceneGraph::BaseNode *	_root,
		unsigned int &	_maxPasses,
		ACG::Vec3d &	_bbmin,
		ACG::Vec3d &	_bbmax
	)

Analyze the SceneGraph <ACG/Scenegraph/SceneGraphAnalysis.hh>

Parameters

_root	Root node of the scenegraph
_maxPasses	Returns the maximal number of render passes
_bbmin	Returns lower left of the bounding box
_bbmax	Returns upper right of the bounding box

Definition at line 62 of file SceneGraphAnalysis.cc.

ACGDLLEXPORT BaseNode * ACG::SceneGraph::find_hidden_node	(	BaseNode *	_root,
		unsigned int	_node_idx
	)

Find a node in the scene graph.

Traverses scenegraph just like the find_node function, but includes hidden nodes.

Definition at line 99 of file SceneGraph.cc.

ACGDLLEXPORT BaseNode * ACG::SceneGraph::find_node	(	BaseNode *	_root,
		unsigned int	_node_idx
	)

Find a node in the scene graph.

Traverse scenegraph starting at _root, looking for a node whose id is _node_idx . Returns 0 if node wasn't found.

Parameters

_root	The root node where the traversal starts (not necessary the root node of the scenegraph)
_node_idx	The node index this function should look for

Returns

0 if the node was not found, otherwise a pointer to the node.

Definition at line 83 of file SceneGraph.cc.

template<class Action >

void ACG::SceneGraph::traverse	(	BaseNode *	_node,
		Action &	_action
	)

Traverse the scenegraph starting at the node _node and apply the action _action to each node. This traversal function will call the enter/leave functions of the action if they have been implemented.

Definition at line 143 of file SceneGraph.hh.

template<class Action >

void ACG::SceneGraph::traverse_all	(	BaseNode *	_node,
		Action &	_action
	)

Traverse the scenegraph exactly like the traverse() function does, but also include hidden nodes.

Definition at line 208 of file SceneGraph.hh.

template<class Action >

void ACG::SceneGraph::traverse_multipass	(	BaseNode *	_node,
		Action &	_action,
		const unsigned int &	_pass
	)

Traverse the scenegraph starting at the node _node and apply the action _action to each node. This traversal function will call the enter/leave functions of the action if they have been implemented. This function traverses the scene graph multiple times if multipass rendering is turned on. GLState holds attributes to control render passes. Attention: Render passes are 1-indexed.
!!! You should ot use this function directly. Use the traverse_multipass function which controls the glstate too. This function will also manage the passes for you!!!

Definition at line 260 of file SceneGraph.hh.

template<class Action >

void ACG::SceneGraph::traverse_multipass	(	BaseNode *	_node,
		Action &	_action,
		GLState &	_state,
		DrawModes::DrawMode	= DrawModes::DEFAULT
	)

Traverse the scenegraph starting at the node _node and apply the action action to each node. When arriving at a node, its BaseNode::enter() function is called, then _action is applied and the node's children are traversed. After that the BaseNode::leave() method is called. Do this in multiple passes.

You have to initialize glstate before doing this:
In the state you give here use GLState::set_max_render_passes to set the maximum number of renderpasses that should be performed. This is not computed here, as the number only changes if the scenegraph is changed and not for all render calls.

See also

ACG::SceneGraph::BaseNode

Definition at line 335 of file SceneGraph.hh.

Variable Documentation

const Vec4f ACG::SceneGraph::colors[4][6]

Initial value:

= {
  
  {
    
    Vec4f(0.2f,0.2f,0.2f,1.0f), Vec4f(0.5f,0.5f,0.5f,1.0f), Vec4f(0.8f,0.8f,0.8f,1.0f),
    
    Vec4f(0.2f,0.2f,0.2f,0.2f), Vec4f(0.5f,0.5f,0.5f,0.4f), Vec4f(0.8f,0.8f,0.8f,0.6f)
  },
  
  {
    
    Vec4f(0.2f,0.0f,0.0f,1.0f), Vec4f(0.5f,0.0f,0.0f,1.0f), Vec4f(0.8f,0.0f,0.0f,1.0f),
    
    Vec4f(0.3f,0.1f,0.1f,0.2f), Vec4f(0.5f,0.2f,0.2f,0.4f), Vec4f(0.8f,0.4f,0.4f,0.6f)
  },
  
  {
    
    Vec4f(0.0f,0.2f,0.0f,1.0f), Vec4f(0.0f,0.5f,0.0f,1.0f), Vec4f(0.0f,0.8f,0.0f,1.0f),
    
    Vec4f(0.1f,0.3f,0.1f,0.2f), Vec4f(0.2f,0.5f,0.2f,0.4f), Vec4f(0.4f,0.8f,0.4f,0.6f)
  },
  
  {
    
    Vec4f(0.0f,0.0f,0.2f,1.0f), Vec4f(0.0f,0.0f,0.5f,1.0f), Vec4f(0.0f,0.0f,0.8f,1.0f),
    
    Vec4f(0.1f,0.1f,0.3f,0.2f), Vec4f(0.2f,0.2f,0.5f,0.4f), Vec4f(0.4f,0.4f,0.8f,0.6f)
  }
}

Definition at line 84 of file TranslationManipulatorNode.cc.