bool pathFromSelectionIdWalk( GLuint selectionId, ScenePlug::ScenePath &path ) const
{
if( m_selectionId == selectionId )
{
path.push_back( m_name );
return true;
}
else
{
for( std::vector<SceneGraph *>::const_iterator it = m_children.begin(), eIt = m_children.end(); it != eIt; ++it )
{
/// \todo Should be able to prune recursion based on knowledge that child
/// selection ids are always greater than parent selection ids.
if( (*it)->pathFromSelectionIdWalk( selectionId, path ) )
{
if( m_name != IECore::InternedString() )
{
path.push_back( m_name );
}
return true;
}
}
}
return false;
}
bool pathFromSelectionId( GLuint selectionId, ScenePlug::ScenePath &path ) const
{
path.clear();
const bool result = pathFromSelectionIdWalk( selectionId, path );
std::reverse( path.begin(), path.end() );
return result;
}
virtual task *execute()
{
ContextPtr context = new Context( *m_context );
context->set( ScenePlug::scenePathContextName, m_scenePath );
Context::Scope scopedContext( context );
m_scenePlug->transformPlug()->getValue();
m_scenePlug->boundPlug()->getValue();
m_scenePlug->attributesPlug()->getValue();
m_scenePlug->objectPlug()->getValue();
ConstInternedStringVectorDataPtr childNamesData = m_scenePlug->childNamesPlug()->getValue();
const vector<InternedString> &childNames = childNamesData->readable();
set_ref_count( 1 + childNames.size() );
ScenePlug::ScenePath childPath = m_scenePath;
childPath.push_back( InternedString() ); // space for the child name
for( vector<InternedString>::const_iterator it = childNames.begin(), eIt = childNames.end(); it != eIt; it++ )
{
childPath[m_scenePath.size()] = *it;
SceneTraversalTask *t = new( allocate_child() ) SceneTraversalTask( m_scenePlug, m_context, childPath );
spawn( *t );
}
wait_for_all();
return 0;
}
void operator()( const tbb::blocked_range<int> &range ) const
{
for( int i=range.begin(); i!=range.end(); ++i )
{
ScenePlug::ScenePath childScenePath = m_parent.m_scenePath;
childScenePath.push_back( m_childNames[i] );
SceneProceduralPtr sceneProcedural = new SceneProcedural( m_parent, childScenePath );
m_childProcedurals[ i ] = sceneProcedural;
}
}
void applySelectionWalk( const PathMatcher &selection, const ScenePlug::ScenePath &path, bool check )
{
const unsigned m = check ? selection.match( path ) : 0;
m_selected = m & Filter::ExactMatch;
ScenePlug::ScenePath childPath = path;
childPath.push_back( IECore::InternedString() ); // space for the child name
for( std::vector<SceneGraph *>::const_iterator it = m_children.begin(), eIt = m_children.end(); it != eIt; ++it )
{
childPath.back() = (*it)->m_name;
(*it)->applySelectionWalk( selection, childPath, m & Filter::DescendantMatch );
}
}
GafferScene::ConstPathMatcherDataPtr BranchCreator::computeSet( const IECore::InternedString &setName, const Gaffer::Context *context, const ScenePlug *parent ) const
{
ConstPathMatcherDataPtr inputSetData = inPlug()->set( setName );
ConstCompoundDataPtr mapping = boost::static_pointer_cast<const CompoundData>( mappingPlug()->getValue() );
if( !mapping->readable().size() )
{
return inputSetData;
}
ScenePlug::ScenePath parentPath = mapping->member<InternedStringVectorData>( g_parentKey )->readable();
ConstPathMatcherDataPtr branchSetData = computeBranchSet( parentPath, setName, context );
if( !branchSetData )
{
return inputSetData;
}
const PathMatcher &branchSet = branchSetData->readable();
if( branchSet.isEmpty() )
{
return inputSetData;
}
const CompoundData *forwardMapping = mapping->member<CompoundData>( g_forwardMappingKey );
PathMatcherDataPtr outputSetData = inputSetData->copy();
PathMatcher &outputSet = outputSetData->writable();
vector<InternedString> outputPrefix( parentPath );
for( PathMatcher::RawIterator pIt = branchSet.begin(), peIt = branchSet.end(); pIt != peIt; ++pIt )
{
const ScenePlug::ScenePath &branchPath = *pIt;
if( !branchPath.size() )
{
continue; // Skip root
}
assert( branchPath.size() == 1 );
const InternedStringData *outputName = forwardMapping->member<InternedStringData>( branchPath[0], /* throwExceptions = */ true );
outputPrefix.resize( parentPath.size() + 1 );
outputPrefix.back() = outputName->readable();
outputSet.addPaths( branchSet.subTree( *pIt ), outputPrefix );
pIt.prune(); // We only want to visit the first level
}
return outputSetData;
}
void ScenePlug::pathToString( const ScenePlug::ScenePath &path, std::string &s )
{
if( !path.size() )
{
s = "/";
}
else
{
s.clear();
for( ScenePlug::ScenePath::const_iterator it = path.begin(), eIt = path.end(); it != eIt; it++ )
{
s += "/" + it->string();
}
}
}
void path( ScenePlug::ScenePath &p )
{
if( !m_parent )
{
return;
}
m_parent->path( p );
p.push_back( m_name );
}
void ScenePlug::stringToPath( const std::string &s, ScenePlug::ScenePath &path )
{
typedef boost::tokenizer<boost::char_separator<char> > Tokenizer;
Tokenizer tokenizer( s, boost::char_separator<char>( "/" ) );
for( Tokenizer::const_iterator it = tokenizer.begin(), eIt = tokenizer.end(); it != eIt; it++ )
{
path.push_back( *it );
}
}
void InteractiveRender::updateShadersWalk( const ScenePlug::ScenePath &path )
{
/// \todo Keep a track of the hashes of the shaders at each path,
/// and use it to only update the shaders when they've changed.
ConstCompoundObjectPtr attributes = inPlug()->attributes( path );
// terminate recursion for invisible locations
ConstBoolDataPtr visibility = attributes->member<BoolData>( SceneInterface::visibilityName );
if( visibility && ( !visibility->readable() ) )
{
return;
}
ConstObjectVectorPtr shader = attributes->member<ObjectVector>( "shader" );
if( shader )
{
std::string name;
ScenePlug::pathToString( path, name );
CompoundDataMap parameters;
parameters["exactscopename"] = new StringData( name );
{
EditBlock edit( m_renderer.get(), "attribute", parameters );
for( ObjectVector::MemberContainer::const_iterator it = shader->members().begin(), eIt = shader->members().end(); it != eIt; it++ )
{
const StateRenderable *s = runTimeCast<const StateRenderable>( it->get() );
if( s )
{
s->render( m_renderer.get() );
}
}
}
}
ConstInternedStringVectorDataPtr childNames = inPlug()->childNames( path );
ScenePlug::ScenePath childPath = path;
childPath.push_back( InternedString() ); // for the child name
for( vector<InternedString>::const_iterator it=childNames->readable().begin(); it!=childNames->readable().end(); it++ )
{
childPath[path.size()] = *it;
updateShadersWalk( childPath );
}
}
bool SceneView::expandWalk( const GafferScene::ScenePlug::ScenePath &path, size_t depth, PathMatcher &expanded, PathMatcher &selected )
{
bool result = false;
ConstInternedStringVectorDataPtr childNamesData = preprocessedInPlug<ScenePlug>()->childNames( path );
const vector<InternedString> &childNames = childNamesData->readable();
if( childNames.size() )
{
// expand ourselves to show our children, and make sure we're
// not selected - we only want selection at the leaf levels of
// our expansion.
result |= expanded.addPath( path );
result |= selected.removePath( path );
ScenePlug::ScenePath childPath = path;
childPath.push_back( InternedString() ); // room for the child name
for( vector<InternedString>::const_iterator cIt = childNames.begin(), ceIt = childNames.end(); cIt != ceIt; cIt++ )
{
childPath.back() = *cIt;
if( depth == 1 )
{
// at the bottom of the expansion - just select the child
result |= selected.addPath( childPath );
}
else
{
// continue the expansion
result |= expandWalk( childPath, depth - 1, expanded, selected );
}
}
}
else
{
// we have no children, just make sure we're selected to mark the
// leaf of the expansion.
result |= selected.addPath( path );
}
return result;
}
const TransformTool::Selection &CameraTool::cameraSelection()
{
if( !m_cameraSelectionDirty )
{
return m_cameraSelection;
}
m_cameraSelection = TransformTool::Selection();
ScenePlug::ScenePath cameraPath = this->cameraPath();
if( !cameraPath.empty() )
{
m_cameraSelection = TransformTool::Selection(
scenePlug(),
cameraPath,
view()->getContext()
);
}
m_cameraSelectionDirty = false;
return m_cameraSelection;
}
void SceneView::collapseSelection()
{
PathMatcher &selection = const_cast<GafferScene::PathMatcherData *>( m_sceneGadget->getSelection() )->writable();
std::vector<string> toCollapse;
selection.paths( toCollapse );
if( !toCollapse.size() )
{
return;
}
GafferScene::PathMatcherData *expandedData = expandedPaths();
PathMatcher &expanded = expandedData->writable();
for( vector<string>::const_iterator it = toCollapse.begin(), eIt = toCollapse.end(); it != eIt; ++it )
{
/// \todo It would be nice to be able to get ScenePaths out of
/// PathMatcher::paths() directly.
ScenePlug::ScenePath path;
ScenePlug::stringToPath( *it, path );
if( !expanded.removePath( path ) )
{
if( path.size() <= 1 )
{
continue;
}
selection.removePath( path );
path.pop_back(); // now the parent path
expanded.removePath( path );
selection.addPath( path );
}
}
// See comment in expandSelection().
getContext()->changedSignal()( getContext(), "ui:scene:expandedPaths" );
// See comment in expandSelection().
transferSelectionToContext();
}
void SceneWriter::writeLocation( const GafferScene::ScenePlug *scene, const ScenePlug::ScenePath &scenePath, Context *context, IECore::SceneInterface *output, double time ) const
{
context->set( ScenePlug::scenePathContextName, scenePath );
ConstCompoundObjectPtr attributes = scene->attributesPlug()->getValue();
for( CompoundObject::ObjectMap::const_iterator it = attributes->members().begin(), eIt = attributes->members().end(); it != eIt; it++ )
{
output->writeAttribute( it->first, it->second.get(), time );
}
if( scenePath.empty() )
{
ConstCompoundObjectPtr globals = scene->globalsPlug()->getValue();
output->writeAttribute( "gaffer:globals", globals.get(), time );
}
ConstObjectPtr object = scene->objectPlug()->getValue();
if( object->typeId() != IECore::NullObjectTypeId && scenePath.size() > 0 )
{
output->writeObject( object.get(), time );
}
Imath::Box3f b = scene->boundPlug()->getValue();
output->writeBound( Imath::Box3d( Imath::V3f( b.min ), Imath::V3f( b.max ) ), time );
if( scenePath.size() )
{
Imath::M44f t = scene->transformPlug()->getValue();
Imath::M44d transform(
t[0][0], t[0][1], t[0][2], t[0][3],
t[1][0], t[1][1], t[1][2], t[1][3],
t[2][0], t[2][1], t[2][2], t[2][3],
t[3][0], t[3][1], t[3][2], t[3][3]
);
output->writeTransform( new IECore::M44dData( transform ), time );
}
ConstInternedStringVectorDataPtr childNames = scene->childNamesPlug()->getValue();
ScenePlug::ScenePath childScenePath = scenePath;
childScenePath.push_back( InternedString() );
for( vector<InternedString>::const_iterator it=childNames->readable().begin(); it!=childNames->readable().end(); it++ )
{
childScenePath[scenePath.size()] = *it;
SceneInterfacePtr outputChild = output->child( *it, SceneInterface::CreateIfMissing );
writeLocation( scene, childScenePath, context, outputChild.get(), time );
}
}
bool GafferScene::SceneAlgo::exists( const ScenePlug *scene, const ScenePlug::ScenePath &path )
{
ScenePlug::PathScope pathScope( Context::current() );
ScenePlug::ScenePath p; p.reserve( path.size() );
for( ScenePlug::ScenePath::const_iterator it = path.begin(), eIt = path.end(); it != eIt; ++it )
{
pathScope.setPath( p );
ConstInternedStringVectorDataPtr childNamesData = scene->childNamesPlug()->getValue();
const vector<InternedString> &childNames = childNamesData->readable();
if( find( childNames.begin(), childNames.end(), *it ) == childNames.end() )
{
return false;
}
p.push_back( *it );
}
return true;
}
bool GafferScene::exists( const ScenePlug *scene, const ScenePlug::ScenePath &path )
{
ContextPtr context = new Context( *Context::current(), Context::Borrowed );
Context::Scope scopedContext( context.get() );
ScenePlug::ScenePath p; p.reserve( path.size() );
for( ScenePlug::ScenePath::const_iterator it = path.begin(), eIt = path.end(); it != eIt; ++it )
{
context->set( ScenePlug::scenePathContextName, p );
ConstInternedStringVectorDataPtr childNamesData = scene->childNamesPlug()->getValue();
const vector<InternedString> &childNames = childNamesData->readable();
if( find( childNames.begin(), childNames.end(), *it ) == childNames.end() )
{
return false;
}
p.push_back( *it );
}
return true;
}
bool GafferScene::SceneAlgo::visible( const ScenePlug *scene, const ScenePlug::ScenePath &path )
{
ScenePlug::PathScope pathScope( Context::current() );
ScenePlug::ScenePath p; p.reserve( path.size() );
for( ScenePlug::ScenePath::const_iterator it = path.begin(), eIt = path.end(); it != eIt; ++it )
{
p.push_back( *it );
pathScope.setPath( p );
ConstCompoundObjectPtr attributes = scene->attributesPlug()->getValue();
const BoolData *visibilityData = attributes->member<BoolData>( "scene:visible" );
if( visibilityData && !visibilityData->readable() )
{
return false;
}
}
return true;
}
bool GafferScene::visible( const ScenePlug *scene, const ScenePlug::ScenePath &path )
{
ContextPtr context = new Context( *Context::current(), Context::Borrowed );
Context::Scope scopedContext( context.get() );
ScenePlug::ScenePath p; p.reserve( path.size() );
for( ScenePlug::ScenePath::const_iterator it = path.begin(), eIt = path.end(); it != eIt; ++it )
{
p.push_back( *it );
context->set( ScenePlug::scenePathContextName, p );
ConstCompoundObjectPtr attributes = scene->attributesPlug()->getValue();
const BoolData *visibilityData = attributes->member<BoolData>( "scene:visible" );
if( visibilityData && !visibilityData->readable() )
{
return false;
}
}
return true;
}
void ScenePlug::stringToPath( const std::string &s, ScenePlug::ScenePath &path )
{
path.clear();
StringAlgo::tokenize( s, '/', path );
}
void SceneView::expandSelection()
{
Context::Scope scopedContext( getContext() );
RenderableGadget::Selection &selection = m_renderableGadget->getSelection();
vector<string> pathsToSelect;
vector<const string *> pathsToDeselect;
IECore::PathMatcherData *expandedData = expandedPaths();
PathMatcher &expanded = expandedData->writable();
bool needUpdate = false;
for( RenderableGadget::Selection::const_iterator it = selection.begin(), eIt = selection.end(); it != eIt; it++ )
{
if( expanded.addPath( *it ) )
{
needUpdate = true;
/// \todo Maybe if RenderableGadget used PathMatcher for specifying selection, and
/// we had a nice means of getting ScenePaths out of PathMatcher, we wouldn't need
/// to do all this string manipulation.
typedef boost::tokenizer<boost::char_separator<char> > Tokenizer;
Tokenizer pathTokenizer( *it, boost::char_separator<char>( "/" ) );
ScenePlug::ScenePath path;
for( Tokenizer::const_iterator pIt = pathTokenizer.begin(), pEIt = pathTokenizer.end(); pIt != pEIt; pIt++ )
{
path.push_back( *pIt );
}
ConstInternedStringVectorDataPtr childNamesData = preprocessedInPlug<ScenePlug>()->childNames( path );
const vector<InternedString> &childNames = childNamesData->readable();
if( childNames.size() )
{
pathsToDeselect.push_back( &(*it) );
for( vector<InternedString>::const_iterator cIt = childNames.begin(), ceIt = childNames.end(); cIt != ceIt; cIt++ )
{
if( *(*it).rbegin() != '/' )
{
pathsToSelect.push_back( *it + "/" + cIt->string() );
}
else
{
pathsToSelect.push_back( *it + cIt->string() );
}
}
}
}
}
for( vector<string>::const_iterator it = pathsToSelect.begin(), eIt = pathsToSelect.end(); it != eIt; it++ )
{
selection.insert( *it );
}
for( vector<const string *>::const_iterator it = pathsToDeselect.begin(), eIt = pathsToDeselect.end(); it != eIt; it++ )
{
selection.erase( **it );
}
if( needUpdate )
{
// we were naughty and modified the expanded paths in place (to avoid
// unecessary copying), so the context doesn't know they've changed.
// so we emit the changed signal ourselves. this will then trigger update()
// via contextChanged().
getContext()->changedSignal()( getContext(), "ui:scene:expandedPaths" );
// and this will trigger a selection update also via contextChanged().
transferSelectionToContext();
}
}
void SceneProcedural::render( RendererPtr renderer ) const
{
Context::Scope scopedContext( m_context );
/// \todo See above.
try
{
// get all the attributes, and early out if we're not visibile
ConstCompoundObjectPtr attributes = m_scenePlug->attributesPlug()->getValue();
const BoolData *visibilityData = attributes->member<BoolData>( "gaffer:visibility" );
if( visibilityData && !visibilityData->readable() )
{
return;
}
// if we are visible then make an attribute block to contain everything, set the name
// and get on with generating things.
AttributeBlock attributeBlock( renderer );
std::string name = "";
for( ScenePlug::ScenePath::const_iterator it = m_scenePath.begin(), eIt = m_scenePath.end(); it != eIt; it++ )
{
name += "/" + it->string();
}
renderer->setAttribute( "name", new StringData( name ) );
// transform
std::set<float> transformTimes;
motionTimes( ( m_options.transformBlur && m_attributes.transformBlur ) ? m_attributes.transformBlurSegments : 0, transformTimes );
{
ContextPtr timeContext = new Context( *m_context );
Context::Scope scopedTimeContext( timeContext );
MotionBlock motionBlock( renderer, transformTimes, transformTimes.size() > 1 );
for( std::set<float>::const_iterator it = transformTimes.begin(), eIt = transformTimes.end(); it != eIt; it++ )
{
timeContext->setFrame( *it );
renderer->concatTransform( m_scenePlug->transformPlug()->getValue() );
}
}
// attributes
for( CompoundObject::ObjectMap::const_iterator it = attributes->members().begin(), eIt = attributes->members().end(); it != eIt; it++ )
{
if( const StateRenderable *s = runTimeCast<const StateRenderable>( it->second.get() ) )
{
s->render( renderer );
}
else if( const ObjectVector *o = runTimeCast<const ObjectVector>( it->second.get() ) )
{
for( ObjectVector::MemberContainer::const_iterator it = o->members().begin(), eIt = o->members().end(); it != eIt; it++ )
{
const StateRenderable *s = runTimeCast<const StateRenderable>( it->get() );
if( s )
{
s->render( renderer );
}
}
}
else if( const Data *d = runTimeCast<const Data>( it->second.get() ) )
{
renderer->setAttribute( it->first, d );
}
}
// object
std::set<float> deformationTimes;
motionTimes( ( m_options.deformationBlur && m_attributes.deformationBlur ) ? m_attributes.deformationBlurSegments : 0, deformationTimes );
{
ContextPtr timeContext = new Context( *m_context );
Context::Scope scopedTimeContext( timeContext );
unsigned timeIndex = 0;
for( std::set<float>::const_iterator it = deformationTimes.begin(), eIt = deformationTimes.end(); it != eIt; it++, timeIndex++ )
{
timeContext->setFrame( *it );
ConstObjectPtr object = m_scenePlug->objectPlug()->getValue();
if( const Primitive *primitive = runTimeCast<const Primitive>( object.get() ) )
{
if( deformationTimes.size() > 1 && timeIndex == 0 )
{
renderer->motionBegin( deformationTimes );
}
primitive->render( renderer );
if( deformationTimes.size() > 1 && timeIndex == deformationTimes.size() - 1 )
{
renderer->motionEnd();
}
}
else if( const Camera *camera = runTimeCast<const Camera>( object.get() ) )
{
/// \todo This absolutely does not belong here, but until we have
/// a mechanism for drawing manipulators, we don't have any other
/// means of visualising the cameras.
if( renderer->isInstanceOf( "IECoreGL::Renderer" ) )
{
drawCamera( camera, renderer.get() );
}
break; // no motion blur for these chappies.
}
else if( const Light *light = runTimeCast<const Light>( object.get() ) )
{
/// \todo This doesn't belong here.
if( renderer->isInstanceOf( "IECoreGL::Renderer" ) )
{
drawLight( light, renderer.get() );
}
break; // no motion blur for these chappies.
}
else if( const VisibleRenderable* renderable = runTimeCast< const VisibleRenderable >( object.get() ) )
{
renderable->render( renderer );
break; // no motion blur for these chappies.
}
}
}
// children
ConstInternedStringVectorDataPtr childNames = m_scenePlug->childNamesPlug()->getValue();
if( childNames->readable().size() )
{
bool expand = true;
if( m_pathsToExpand )
{
expand = m_pathsToExpand->readable().match( m_scenePath ) & Filter::ExactMatch;
}
if( !expand )
{
renderer->setAttribute( "gl:primitive:wireframe", new BoolData( true ) );
renderer->setAttribute( "gl:primitive:solid", new BoolData( false ) );
renderer->setAttribute( "gl:curvesPrimitive:useGLLines", new BoolData( true ) );
Box3f b = m_scenePlug->boundPlug()->getValue();
CurvesPrimitive::createBox( b )->render( renderer );
}
else
{
ScenePlug::ScenePath childScenePath = m_scenePath;
childScenePath.push_back( InternedString() ); // for the child name
for( vector<InternedString>::const_iterator it=childNames->readable().begin(); it!=childNames->readable().end(); it++ )
{
childScenePath[m_scenePath.size()] = *it;
renderer->setAttribute( "name", new StringData( *it ) );
renderer->procedural( new SceneProcedural( *this, childScenePath ) );
}
}
}
}
catch( const std::exception &e )
{
IECore::msg( IECore::Msg::Error, "SceneProcedural::render()", e.what() );
}
}
virtual void *operator()( void *item )
{
SceneGraph *s = (SceneGraph*)item;
ScenePlug::ScenePath path;
s->path( path );
std::string name;
ScenePlug::pathToString( path, name );
try
{
if( !m_editMode )
{
// outputting scene for the first time - do some attribute block tracking:
if( path.size() )
{
for( int i = m_previousPath.size(); i >= (int)path.size(); --i )
{
--m_attrBlockCounter;
m_renderer->attributeEnd();
}
}
m_previousPath = path;
++m_attrBlockCounter;
m_renderer->attributeBegin();
// set the name for this location:
m_renderer->setAttribute( "name", new StringData( name ) );
}
// transform:
if( !m_editMode )
{
m_renderer->concatTransform( s->m_transform );
}
// attributes:
if( s->m_attributes )
{
if( m_editMode )
{
CompoundDataMap parameters;
parameters["exactscopename"] = new StringData( name );
m_renderer->editBegin( "attribute", parameters );
}
outputAttributes( s->m_attributes.get(), m_renderer );
s->m_attributes = NULL;
if( m_editMode )
{
m_renderer->editEnd();
}
}
// object:
if( s->m_object && !m_editMode )
{
if( const VisibleRenderable *renderable = runTimeCast< const VisibleRenderable >( s->m_object.get() ) )
{
renderable->render( m_renderer );
}
s->m_object = 0;
}
}
catch( const std::exception &e )
{
IECore::msg( IECore::Msg::Error, "InteractiveRender::update", name + ": " + e.what() );
}
return NULL;
}
virtual task *execute()
{
ContextPtr context = new Context( *m_context, Context::Borrowed );
context->set( ScenePlug::scenePathContextName, m_scenePath );
Context::Scope scopedContext( context.get() );
// we need the attributes so we can terminate recursion at invisible locations, so
// we might as well store them in the scene graph, along with the hash:
m_sceneGraph->m_attributesHash = m_scene->attributesPlug()->hash();
// use the precomputed hash in getValue() to save a bit of time:
m_sceneGraph->m_attributes = m_scene->attributesPlug()->getValue( &m_sceneGraph->m_attributesHash );
const BoolData *visibilityData = m_sceneGraph->m_attributes->member<BoolData>( SceneInterface::visibilityName );
if( visibilityData && !visibilityData->readable() )
{
// terminate recursion for invisible locations
return NULL;
}
// store the hash of the child names so we know when they change:
m_sceneGraph->m_childNamesHash = m_scene->childNamesPlug()->hash();
// compute child names:
IECore::ConstInternedStringVectorDataPtr childNamesData = m_scene->childNamesPlug()->getValue( &m_sceneGraph->m_childNamesHash );
std::vector<IECore::InternedString> childNames = childNamesData->readable();
if( childNames.empty() )
{
// nothing more to do
return NULL;
}
// sort the child names so we can compare child name lists easily in ChildNamesUpdateTask:
std::sort( childNames.begin(), childNames.end() );
// add children for this location:
std::vector<InteractiveRender::SceneGraph *> children;
for( std::vector<IECore::InternedString>::const_iterator it = childNames.begin(), eIt = childNames.end(); it != eIt; ++it )
{
SceneGraph *child = new SceneGraph();
child->m_name = *it;
child->m_parent = m_sceneGraph;
children.push_back( child );
}
// spawn child tasks:
set_ref_count( 1 + children.size() );
ScenePlug::ScenePath childPath = m_scenePath;
childPath.push_back( IECore::InternedString() ); // space for the child name
for( std::vector<SceneGraph *>::const_iterator it = children.begin(), eIt = children.end(); it != eIt; ++it )
{
childPath.back() = (*it)->m_name;
SceneGraphBuildTask *t = new( allocate_child() ) SceneGraphBuildTask(
m_scene,
m_context,
(*it),
childPath
);
spawn( *t );
}
wait_for_all();
// add visible children to m_sceneGraph->m_children:
for( std::vector<SceneGraph *>::const_iterator it = children.begin(), eIt = children.end(); it != eIt; ++it )
{
const BoolData *visibilityData = (*it)->m_attributes->member<BoolData>( SceneInterface::visibilityName );
if( visibilityData && !visibilityData->readable() )
{
continue;
}
m_sceneGraph->m_children.push_back( *it );
}
return NULL;
}
virtual task *execute()
{
ContextPtr context = new Context( *m_context, Context::Borrowed );
context->set( ScenePlug::scenePathContextName, m_scenePath );
Context::Scope scopedContext( context.get() );
IECore::MurmurHash childNamesHash = m_scene->childNamesPlug()->hash();
if( childNamesHash != m_sceneGraph->m_childNamesHash )
{
// child names have changed - we need to update m_locationPresent on the children:
m_sceneGraph->m_childNamesHash = childNamesHash;
// read updated child names:
IECore::ConstInternedStringVectorDataPtr childNamesData = m_scene->childNamesPlug()->getValue( &m_sceneGraph->m_childNamesHash );
std::vector<IECore::InternedString> childNames = childNamesData->readable();
// m_sceneGraph->m_children should be sorted by name. Sort this list too so we can
// compare the two easily:
std::sort( childNames.begin(), childNames.end() );
std::vector<InternedString>::iterator childNamesBegin = childNames.begin();
for( std::vector<SceneGraph *>::const_iterator it = m_sceneGraph->m_children.begin(), eIt = m_sceneGraph->m_children.end(); it != eIt; ++it )
{
// try and find the current child name in the list of child names:
std::vector<InternedString>::iterator nameIt = std::find( childNamesBegin, childNames.end(), (*it)->m_name );
if( nameIt != childNames.end() )
{
// ok, it's there - mark this child as still present
(*it)->m_locationPresent = true;
// As both the name lists are sorted, no further child names will be found beyond nameIt
// in the list, nor will they be found at nameIt as there shouldn't be any duplicates.
// This means we can move the start of the child names list one position past nameIt
// to save a bit of time:
/// \todo Note that if all the children have changed names, we never end up in here, and
/// we will end up with quadratic behaviour calling find (a linear search N times).
childNamesBegin = nameIt;
++childNamesBegin;
}
else
{
(*it)->m_locationPresent = false;
}
}
}
// count children currently present in the scene:
size_t numPresentChildren = 0;
for( std::vector<SceneGraph *>::const_iterator it = m_sceneGraph->m_children.begin(), eIt = m_sceneGraph->m_children.end(); it != eIt; ++it )
{
numPresentChildren += (*it)->m_locationPresent;
}
// spawn child tasks:
set_ref_count( 1 + numPresentChildren );
ScenePlug::ScenePath childPath = m_scenePath;
childPath.push_back( IECore::InternedString() ); // space for the child name
for( std::vector<SceneGraph *>::const_iterator it = m_sceneGraph->m_children.begin(), eIt = m_sceneGraph->m_children.end(); it != eIt; ++it )
{
if( (*it)->m_locationPresent )
{
childPath.back() = (*it)->m_name;
ChildNamesUpdateTask *t = new( allocate_child() ) ChildNamesUpdateTask(
m_scene,
m_context,
(*it),
childPath
);
spawn( *t );
}
}
wait_for_all();
return NULL;
}
virtual task *execute()
{
ScenePlug::PathScope pathScope( m_sceneGadget->m_context.get(), m_scenePath );
// Update attributes, and compute visibility.
const bool previouslyVisible = m_sceneGraph->m_visible;
if( m_dirtyFlags & AttributesDirty )
{
const IECore::MurmurHash attributesHash = m_sceneGadget->m_scene->attributesPlug()->hash();
if( attributesHash != m_sceneGraph->m_attributesHash )
{
IECore::ConstCompoundObjectPtr attributes = m_sceneGadget->m_scene->attributesPlug()->getValue( &attributesHash );
const IECore::BoolData *visibilityData = attributes->member<IECore::BoolData>( "scene:visible" );
m_sceneGraph->m_visible = visibilityData ? visibilityData->readable() : true;
IECore::ConstRunTimeTypedPtr glStateCachedTyped = IECoreGL::CachedConverter::defaultCachedConverter()->convert( attributes.get() );
IECoreGL::ConstStatePtr glStateCached = IECore::runTimeCast<const IECoreGL::State>( glStateCachedTyped );
IECoreGL::ConstStatePtr visState = NULL;
deferReferenceRemoval( m_sceneGraph->m_attributesRenderable );
m_sceneGraph->m_attributesRenderable = AttributeVisualiser::allVisualisations( attributes.get(), visState );
deferReferenceRemoval( m_sceneGraph->m_state );
if( visState )
{
IECoreGL::StatePtr glState = new IECoreGL::State( *glStateCached );
glState->add( const_cast< IECoreGL::State* >( visState.get() ) );
m_sceneGraph->m_state = glState;
}
else
{
m_sceneGraph->m_state = glStateCached;
}
m_sceneGraph->m_attributesHash = attributesHash;
}
}
if( !m_sceneGraph->m_visible )
{
// No need to update further since we're not visible.
return NULL;
}
else if( !previouslyVisible )
{
// We didn't perform any updates when we were invisible,
// so we need to update everything now.
m_dirtyFlags = AllDirty;
}
// Update the object - converting it into an IECoreGL::Renderable
if( m_dirtyFlags & ObjectDirty )
{
const IECore::MurmurHash objectHash = m_sceneGadget->m_scene->objectPlug()->hash();
if( objectHash != m_sceneGraph->m_objectHash )
{
IECore::ConstObjectPtr object = m_sceneGadget->m_scene->objectPlug()->getValue( &objectHash );
deferReferenceRemoval( m_sceneGraph->m_renderable );
if( !object->isInstanceOf( IECore::NullObjectTypeId ) )
{
m_sceneGraph->m_renderable = objectToRenderable( object.get() );
}
m_sceneGraph->m_objectHash = objectHash;
}
}
// Update the transform and bound
if( m_dirtyFlags & TransformDirty )
{
m_sceneGraph->m_transform = m_sceneGadget->m_scene->transformPlug()->getValue();
}
m_sceneGraph->m_bound = m_sceneGraph->m_renderable ? m_sceneGraph->m_renderable->bound() : Box3f();
// Update the expansion state
const bool previouslyExpanded = m_sceneGraph->m_expanded;
if( m_dirtyFlags & ExpansionDirty )
{
m_sceneGraph->m_expanded = m_sceneGadget->m_minimumExpansionDepth >= m_scenePath.size();
if( !m_sceneGraph->m_expanded )
{
m_sceneGraph->m_expanded = m_sceneGadget->m_expandedPaths->readable().match( m_scenePath ) & Filter::ExactMatch;
}
}
// If we're not expanded, then we can early out after creating a bounding box.
deferReferenceRemoval( m_sceneGraph->m_boundRenderable );
if( !m_sceneGraph->m_expanded )
{
// We're not expanded, so we early out before updating the children.
// We do however need to see if we have any children, and arrange to
// draw their bounding box if we do.
bool haveChildren = m_sceneGraph->m_children.size();
if( m_dirtyFlags & ChildNamesDirty || !previouslyExpanded )
{
IECore::ConstInternedStringVectorDataPtr childNamesData = m_sceneGadget->m_scene->childNamesPlug()->getValue();
haveChildren = childNamesData->readable().size();
}
m_sceneGraph->clearChildren();
m_sceneGraph->m_bound.extendBy( m_sceneGadget->m_scene->boundPlug()->getValue() );
if( haveChildren )
{
IECore::CurvesPrimitivePtr curvesBound = IECore::CurvesPrimitive::createBox( m_sceneGraph->m_bound );
m_sceneGraph->m_boundRenderable = boost::static_pointer_cast<const IECoreGL::Renderable>(
IECoreGL::CachedConverter::defaultCachedConverter()->convert( curvesBound.get() )
);
}
return NULL;
}
// We are expanded, so we need to visit all the children
// and update those too.
if( !previouslyExpanded )
{
m_dirtyFlags = AllDirty;
}
// Make sure we have a child for each child name
if( m_dirtyFlags & ChildNamesDirty )
{
IECore::ConstInternedStringVectorDataPtr childNamesData = m_sceneGadget->m_scene->childNamesPlug()->getValue();
const std::vector<IECore::InternedString> &childNames = childNamesData->readable();
if( !existingChildNamesValid( childNames ) )
{
m_sceneGraph->clearChildren();
for( std::vector<IECore::InternedString>::const_iterator it = childNames.begin(), eIt = childNames.end(); it != eIt; ++it )
{
SceneGraph *child = new SceneGraph();
child->m_name = *it;
m_sceneGraph->m_children.push_back( child );
}
m_dirtyFlags = AllDirty; // We've made brand new children, so they need a full update.
}
}
// And then update each child
if( m_sceneGraph->m_children.size() )
{
set_ref_count( 1 + m_sceneGraph->m_children.size() );
ScenePlug::ScenePath childPath = m_scenePath;
childPath.push_back( IECore::InternedString() ); // space for the child name
for( std::vector<SceneGraph *>::const_iterator it = m_sceneGraph->m_children.begin(), eIt = m_sceneGraph->m_children.end(); it != eIt; ++it )
{
childPath.back() = (*it)->m_name;
UpdateTask *t = new( allocate_child() ) UpdateTask( m_sceneGadget, *it, m_dirtyFlags, childPath );
spawn( *t );
}
wait_for_all();
}
// Finally compute our bound from the child bounds.
for( std::vector<SceneGraph *>::const_iterator it = m_sceneGraph->m_children.begin(), eIt = m_sceneGraph->m_children.end(); it != eIt; ++it )
{
const Box3f childBound = transform( (*it)->m_bound, (*it)->m_transform );
m_sceneGraph->m_bound.extendBy( childBound );
}
return NULL;
}