VRS::SceneGraphBuilder Class Reference
#include <vrs/scenegraphbuilder.h>
Public Member Functions | |
| virtual ID | service () const |
| The service name of this handler is SceneGraphBuilder. | |
| virtual ID | target () const =0 |
| virtual SO< SceneNode > | buildSceneGraph (Engine *engine, Shape *shape)=0 |
| virtual bool | handle (Engine *engine, const Shape *shape) |
| virtual bool | isCachable () const |
| VRS_TYPEINFO (SceneGraphBuilder, Handler) | |
Detailed Description
Abstract Base Class for substituting shapes by scene graphs. NOTE: If a shape object is referenced multiple times by a scene graph, the shape will always be substituted by the same scene graph constructed for the first occurence of the shape during scene graph traversal!Member Function Documentation
| virtual ID VRS::SceneGraphBuilder::service | ( | ) | const [virtual] |
| virtual ID VRS::SceneGraphBuilder::target | ( | ) | const [pure virtual] |
The stack class is the name of the shape class for which the handler provides the build service.
Implements VRS::Handler.
| virtual SO<SceneNode> VRS::SceneGraphBuilder::buildSceneGraph | ( | Engine * | engine, | |
| Shape * | shape | |||
| ) | [pure virtual] |
Creates a scene graph representation for the given shape. This method must be implemented by the sub classes. NOTE: A SceneGraphBuilder must not produce global PolyAttributes.
Will be called from the processor in order to try to build the scene graph for the given shape. Returns true if a scene graph has been created, otherwise false.
| virtual bool VRS::SceneGraphBuilder::isCachable | ( | ) | const [virtual] |
Normally, SceneGraphBuilder derivations produces scenegraphs only once per frame, i.e. in the first call of buildSceneGraph(). In subsequent calls (e.g. for multi-pass rendering) the SceneGraphBuilder uses the same SceneThing that have been produced in the first call in a frame. If a SceneGraphBuilder derivation needs to provide different SceneGraphs during one frame, it must overlad isCachable() and return false.
| VRS::SceneGraphBuilder::VRS_TYPEINFO | ( | SceneGraphBuilder | , | |
| Handler | ||||
| ) |
The documentation for this class was generated from the following file: