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The SoReorganizeAction class reorganizes your scene graph to optimize traversal/rendering. More...
Public Member Functions | |
SoReorganizeAction (SoSimplifier *simplifier=NULL) | |
virtual | ~SoReorganizeAction (void) |
SoSeparator * | getSimplifiedSceneGraph (void) const |
void | generateNormals (SbBool onoff) |
SbBool | areNormalGenerated (void) const |
void | generateTriangleStrips (SbBool onoff) |
SbBool | areTriangleStripGenerated (void) const |
void | generateTexCoords (SbBool onoff) |
SbBool | areTexCoordsGenerated (void) const |
void | generateVPNodes (SbBool onoff) |
SbBool | areVPNodesGenerated (void) |
void | matchIndexArrays (SbBool onoff) |
SbBool | areIndexArraysMatched (void) const |
SoSimplifier * | getSimplifier (void) const |
virtual void | apply (SoNode *root) |
virtual void | apply (SoPath *path) |
virtual void | apply (const SoPathList &pathlist, SbBool obeysrules=FALSE) |
Static Public Member Functions | |
static void | initClass (void) |
static void | startReport (const char *msg) |
static void | finishReport (void) |
Protected Member Functions | |
virtual void | beginTraversal (SoNode *node) |
The SoReorganizeAction class reorganizes your scene graph to optimize traversal/rendering.
Note. This is work-in-progress. pederb, 2005-04-05.
The code below is an example of a program that applies an SoReorganizeAction on a scene graph, converting all shapes into shapes that can be rendered using vertex array or VBO rendering.
#include <Inventor/SoDB.h> #include <Inventor/nodes/SoSeparator.h> #include <Inventor/nodes/SoCoordinate3.h> #include <Inventor/nodes/SoCoordinate4.h> #include <Inventor/nodes/SoNormal.h> #include <Inventor/nodes/SoTextureCoordinate2.h> #include <Inventor/nodes/SoSeparator.h> #include <Inventor/actions/SoWriteAction.h> #include <Inventor/actions/SoSearchAction.h> #include <Inventor/errors/SoDebugError.h> #include <Inventor/nodes/SoShapeHints.h> #include <Inventor/SoInput.h> #include <Inventor/SoOutput.h> #include <Inventor/SoInteraction.h> #include <Inventor/actions/SoReorganizeAction.h> #include <assert.h> #include <stdio.h> static void strip_node(SoType type, SoNode * root) { SoSearchAction sa; sa.setType(type); sa.setSearchingAll(TRUE); sa.setInterest(SoSearchAction::ALL); sa.apply(root); SoPathList & pl = sa.getPaths(); for (int i = 0; i < pl.getLength(); i++) { SoFullPath * p = (SoFullPath*) pl[i]; if (p->getTail()->isOfType(type)) { SoGroup * g = (SoGroup*) p->getNodeFromTail(1); g->removeChild(p->getIndexFromTail(0)); } } sa.reset(); } int main(int argc, char ** argv ) { if (argc < 3) { fprintf(stderr,"Usage: reorganize <infile> <outfile> [nostrip]\n"); return -1; } SbBool strip = TRUE; if (argc > 3) { if (strcmp(argv[3], "nostrip") == 0) strip = FALSE; else { fprintf(stderr,"Usage: reorganize <infile> <outfile> [nostrip]\n"); return -1; } } SoDB::init(); SoInteraction::init(); SoInput input; SbBool ok = input.openFile(argv[1]); if (!ok) { fprintf(stderr,"Unable to open file.\n"); return -1; } SoSeparator * root = SoDB::readAll(&input); SbBool vrml1 = input.isFileVRML1(); SbBool vrml2 = input.isFileVRML2(); if (vrml2) { fprintf(stderr,"VRML2 not supported yet\n"); return -1; } if (!root) { fprintf(stderr,"Unable to read file.\n"); return -1; } root->ref(); fprintf(stderr,"Applying SoReorganizeAction..."); SoReorganizeAction reorg; reorg.apply(root); fprintf(stderr,"done\n"); SoOutput out; if (out.openFile(argv[2])) { if (strip) { // strip coord3, texcoord and normal nodes fprintf(stderr,"stripping old nodes from scene graph\n"); strip_node(SoCoordinate3::getClassTypeId(), root); strip_node(SoCoordinate4::getClassTypeId(), root); strip_node(SoNormal::getClassTypeId(), root); strip_node(SoTextureCoordinate2::getClassTypeId(), root); } fprintf(stderr,"writing target\n"); SoWriteAction wa(&out); wa.apply(root); } root->unref(); return 0; } // main()
SoReorganizeAction::SoReorganizeAction | ( | SoSimplifier * | simplifier = NULL | ) |
A constructor.
SoReorganizeAction::~SoReorganizeAction | ( | void | ) | [virtual] |
The destructor.
void SoReorganizeAction::initClass | ( | void | ) | [static] |
Initializes the run-time type system for this class, and sets up the enabled elements and action method list.
Reimplemented from SoSimplifyAction.
void SoReorganizeAction::apply | ( | SoNode * | root | ) | [virtual] |
Applies the action to the scene graph rooted at root.
Note that you should not apply an action to a node with a zero reference count. The behavior in that case is undefined.
Reimplemented from SoSimplifyAction.
References SoNode::getClassTypeId(), and SbPList::getLength().
Referenced by apply().
void SoReorganizeAction::apply | ( | SoPath * | path | ) | [virtual] |
Applies the action to the parts of the graph defined by path.
Note that an SoPath will also contain all nodes that may influence e.g. geometry nodes in the path. So for instance applying an SoGLRenderAction on an SoPath will render that path as expected in the view, where geometry will get its materials, textures, and other appearance settings correctly.
If the path ends in an SoGroup node, the action will also traverse the tail node's children.
Reimplemented from SoSimplifyAction.
void SoReorganizeAction::apply | ( | const SoPathList & | pathlist, |
SbBool | obeysrules = FALSE |
||
) | [virtual] |
Applies action to the graphs defined by pathlist. If obeysrules is set to TRUE
, pathlist must obey the following four conditions (which is the case for path lists returned from search actions for non-group nodes and path lists returned from picking actions):
All paths must start at the same head node. All paths must be sorted in traversal order. The paths must be unique. No path can continue through the end point of another path.
Reimplemented from SoSimplifyAction.
References apply(), and SbPList::getLength().
void SoReorganizeAction::beginTraversal | ( | SoNode * | node | ) | [protected, virtual] |
This virtual method is called from SoAction::apply(), and is the entry point for the actual scenegraph traversal.
It can be overridden to initialize the action at traversal start, for specific initializations in the action subclasses inheriting SoAction.
Default method just calls traverse(), which any overridden implementation of the method must do too (or call SoAction::beginTraversal()) to trigger the scenegraph traversal.
Reimplemented from SoSimplifyAction.
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