SplatCloudObject.cc 19.2 KB
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/*===========================================================================*\
*                                                                            *
*                              OpenFlipper                                   *
*      Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen       *
*                           www.openflipper.org                              *
*                                                                            *
*--------------------------------------------------------------------------- *
*  This file is part of OpenFlipper.                                         *
*                                                                            *
*  OpenFlipper is free software: you can redistribute it and/or modify       *
*  it under the terms of the GNU Lesser General Public License as            *
*  published by the Free Software Foundation, either version 3 of            *
*  the License, or (at your option) any later version with the               *
*  following exceptions:                                                     *
*                                                                            *
*  If other files instantiate templates or use macros                        *
*  or inline functions from this file, or you compile this file and          *
*  link it with other files to produce an executable, this file does         *
*  not by itself cause the resulting executable to be covered by the         *
*  GNU Lesser General Public License. This exception does not however        *
*  invalidate any other reasons why the executable file might be             *
*  covered by the GNU Lesser General Public License.                         *
*                                                                            *
*  OpenFlipper is distributed in the hope that it will be useful,            *
*  but WITHOUT ANY WARRANTY; without even the implied warranty of            *
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
*  GNU Lesser General Public License for more details.                       *
*                                                                            *
*  You should have received a copy of the GNU LesserGeneral Public           *
*  License along with OpenFlipper. If not,                                   *
*  see <http://www.gnu.org/licenses/>.                                       *
*                                                                            *
\*===========================================================================*/

/*===========================================================================*\
*                                                                            *
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
*                                                                            *
\*===========================================================================*/

//================================================================
//
//  SplatCloudObject
//
//================================================================


#define SPLATCLOUDOBJECT_C


//== INCLUDES ====================================================


#include "SplatCloud.hh"
#include <OpenFlipper/common/Types.hh>
#include <OpenFlipper/common/GlobalOptions.hh>
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#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
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#include <ACG/Scenegraph/DrawModes.hh>
#include <QString>


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//== DEFINES =====================================================


//#define REPORT_UPDATE_TYPE


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//== IMPLEMENTATION ==============================================


/** Constructor for SplatCloud Objects. This object class gets a Separator Node giving
 *  the root node to which it should be connected. The SplatCloud is generated internally
 *  and all nodes for visualization will be added below the scenegraph node.\n
 *  You dont need to create an object of this type manually. Use
 *  PluginFunctions::addSplatCloud instead. ( see Types.hh::DataType )
 */
SplatCloudObject::SplatCloudObject() : 
BaseObjectData         (       ), 
backfaceCullingEnabled_( false ), 
pointsizeScale_        ( 1.0f  ), 
shaderNode_            ( 0     ), 
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splatCloudNode_        ( 0     ) 
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{
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	// allocate memory for splat cloud
	splatCloud_ = new SplatCloud;
	if( !splatCloud_ )
	{
		std::cerr << "SplatCloudObject::SplatCloudObject() : Out of memory." << std::endl;
	}

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	setDataType( DATA_SPLATCLOUD );
	setTypeIcon( DATA_SPLATCLOUD, "SplatCloudType.png" );
	init();
}


//----------------------------------------------------------------


/**
 * Copy Constructor - generates a copy of the given object
 */
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SplatCloudObject::SplatCloudObject( const SplatCloudObject &_object ) : BaseObjectData( _object )
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{
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	init( _object.splatCloud_ );
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	setName( name() );
}


//----------------------------------------------------------------


/** Destructor for SplatCloud Objects. The destructor deletes the Line and all
 *  Scenegraph nodes associated with the SplatCloud or the object.
 */
SplatCloudObject::~SplatCloudObject()
{
	// Delete the data attached to this object ( this will remove all perObject data)
	// Not the best way to do it but it will work.
	// This is only necessary if people use references to the SplatCloud below and
	// they do something with the SplatCloud in the destructor of their
	// perObjectData.
	deleteData();

	// No need to delete the scenegraph Nodes as this will be managed by baseplugin
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	shaderNode_     = 0;
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	splatCloudNode_ = 0;
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	// free memory of splat cloud
	delete splatCloud_;
	splatCloud_ = 0;
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}


//----------------------------------------------------------------


/** Cleanup Function for SplatCloud Objects. Deletes the contents of the whole object and
 * calls SplatCloudObject::init afterwards.
 */
void SplatCloudObject::cleanup()
{
	BaseObjectData::cleanup();

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	shaderNode_     = 0;
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	splatCloudNode_ = 0;

	init();
}


//----------------------------------------------------------------


/**
 * Generate a copy
 */
BaseObject *SplatCloudObject::copy()
{
	SplatCloudObject *object = new SplatCloudObject( *this );
	return dynamic_cast<BaseObject *>( object );
}


//----------------------------------------------------------------


/**
 * Reload shaders from file
 */
void SplatCloudObject::reloadShaders()
{
	// standard shader filenames
	static const char SPLATS_VERTEXSHADER_FILENAME[]   = "SplatCloud_Splats/Vertex.glsl";
	static const char SPLATS_FRAGMENTSHADER_FILENAME[] = "SplatCloud_Splats/Fragment.glsl";
	static const char DOTS_VERTEXSHADER_FILENAME[]     = "SplatCloud_Dots/Vertex.glsl";
	static const char DOTS_FRAGMENTSHADER_FILENAME[]   = "SplatCloud_Dots/Fragment.glsl";
	static const char POINTS_VERTEXSHADER_FILENAME[]   = "SplatCloud_Points/Vertex.glsl";
	static const char POINTS_FRAGMENTSHADER_FILENAME[] = "SplatCloud_Points/Fragment.glsl";

	// picking shader filenames
	static const char SPLATS_PICK_VERTEXSHADER_FILENAME[]   = "SplatCloud_Splats/PickVertex.glsl";
	static const char SPLATS_PICK_FRAGMENTSHADER_FILENAME[] = "SplatCloud_Splats/Fragment.glsl";
	static const char DOTS_PICK_VERTEXSHADER_FILENAME[]     = "SplatCloud_Dots/PickVertex.glsl";
	static const char DOTS_PICK_FRAGMENTSHADER_FILENAME[]   = "SplatCloud_Dots/Fragment.glsl";
	static const char POINTS_PICK_VERTEXSHADER_FILENAME[]   = "SplatCloud_Points/PickVertex.glsl";
	static const char POINTS_PICK_FRAGMENTSHADER_FILENAME[] = "SplatCloud_Points/Fragment.glsl";

	// get drawmodes
	ACG::SceneGraph::DrawModes::DrawMode splatsDrawMode = ACG::SceneGraph::DrawModes::getDrawMode( "Splats" );
	ACG::SceneGraph::DrawModes::DrawMode dotsDrawMode   = ACG::SceneGraph::DrawModes::getDrawMode( "Dots"   );
	ACG::SceneGraph::DrawModes::DrawMode pointsDrawMode = ACG::SceneGraph::DrawModes::getDrawMode( "Points" );

	// if drawmodes don't exist something went wrong
	if( splatsDrawMode == ACG::SceneGraph::DrawModes::NONE || 
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	    dotsDrawMode   == ACG::SceneGraph::DrawModes::NONE || 
	    pointsDrawMode == ACG::SceneGraph::DrawModes::NONE )
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	{
		std::cerr << "Shader DrawModes for SplatCloud not existent!" << std::endl;
		return;
	}

	// get shader directory
	QString shaderDir =	OpenFlipper::Options::shaderDirStr() + 
						OpenFlipper::Options::dirSeparator();
	std::string shaderDirectory = std::string( shaderDir.toUtf8() );

	// set shader directory
	shaderNode_->setShaderDir( shaderDirectory );

	// load shaders

	if( QFile( shaderDir + SPLATS_VERTEXSHADER_FILENAME        ).exists() && 
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	    QFile( shaderDir + SPLATS_PICK_VERTEXSHADER_FILENAME   ).exists() &&
	    QFile( shaderDir + SPLATS_FRAGMENTSHADER_FILENAME      ).exists() &&
	    QFile( shaderDir + SPLATS_PICK_FRAGMENTSHADER_FILENAME ).exists() )
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	{
		shaderNode_->setShader( splatsDrawMode, 
			SPLATS_VERTEXSHADER_FILENAME,      SPLATS_FRAGMENTSHADER_FILENAME, 
			SPLATS_PICK_VERTEXSHADER_FILENAME, SPLATS_PICK_FRAGMENTSHADER_FILENAME );
	}
	else
	{
		std::cerr << "Shader Files for SplatCloud/Splats not found!" << std::endl;
	}

	if( QFile( shaderDir + DOTS_VERTEXSHADER_FILENAME        ).exists() && 
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	    QFile( shaderDir + DOTS_PICK_VERTEXSHADER_FILENAME   ).exists() &&
	    QFile( shaderDir + DOTS_FRAGMENTSHADER_FILENAME      ).exists() &&
	    QFile( shaderDir + DOTS_PICK_FRAGMENTSHADER_FILENAME ).exists() )
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	{
		shaderNode_->setShader( dotsDrawMode, 
			DOTS_VERTEXSHADER_FILENAME,      DOTS_FRAGMENTSHADER_FILENAME, 
			DOTS_PICK_VERTEXSHADER_FILENAME, DOTS_PICK_FRAGMENTSHADER_FILENAME );
	}
	else
	{
		std::cerr << "Shader Files for SplatCloud/Dots not found!" << std::endl;
	}

	if( QFile( shaderDir + POINTS_VERTEXSHADER_FILENAME        ).exists() && 
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	    QFile( shaderDir + POINTS_PICK_VERTEXSHADER_FILENAME   ).exists() &&
	    QFile( shaderDir + POINTS_FRAGMENTSHADER_FILENAME      ).exists() &&
	    QFile( shaderDir + POINTS_PICK_FRAGMENTSHADER_FILENAME ).exists() )
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	{
		shaderNode_->setShader( pointsDrawMode, 
			POINTS_VERTEXSHADER_FILENAME,      POINTS_FRAGMENTSHADER_FILENAME, 
			POINTS_PICK_VERTEXSHADER_FILENAME, POINTS_PICK_FRAGMENTSHADER_FILENAME );
	}
	else
	{
		std::cerr << "Shader Files for SplatCloud/Points not found!" << std::endl;
	}
}


//----------------------------------------------------------------


/**
 * Enable or disable backface culling
 */
void SplatCloudObject::enableBackfaceCulling( bool _enable )
{
	// get drawmodes
	ACG::SceneGraph::DrawModes::DrawMode splatsDrawMode = ACG::SceneGraph::DrawModes::getDrawMode( "Splats" );
	ACG::SceneGraph::DrawModes::DrawMode dotsDrawMode   = ACG::SceneGraph::DrawModes::getDrawMode( "Dots"   );
	ACG::SceneGraph::DrawModes::DrawMode pointsDrawMode = ACG::SceneGraph::DrawModes::getDrawMode( "Points" );

	// if drawmodes don't exist something went wrong
	if( splatsDrawMode == ACG::SceneGraph::DrawModes::NONE || 
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	    dotsDrawMode   == ACG::SceneGraph::DrawModes::NONE || 
	    pointsDrawMode == ACG::SceneGraph::DrawModes::NONE )
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	{
		std::cerr << "Shader DrawModes for SplatCloud not existent!" << std::endl;
		return;
	}

	// get standard and picking shaders
	GLSL::PtrProgram splatsShader     = shaderNode_->getShader( splatsDrawMode, false );
	GLSL::PtrProgram splatsPickShader = shaderNode_->getShader( splatsDrawMode, true  );
	GLSL::PtrProgram dotsShader       = shaderNode_->getShader( dotsDrawMode,   false );
	GLSL::PtrProgram dotsPickShader   = shaderNode_->getShader( dotsDrawMode,   true  );
	GLSL::PtrProgram pointsShader     = shaderNode_->getShader( pointsDrawMode, false );
	GLSL::PtrProgram pointsPickShader = shaderNode_->getShader( pointsDrawMode, true  );

	// update backface-culling uniform of shaders

	backfaceCullingEnabled_ = _enable;
	GLint backfaceCulling = (GLint) _enable;

	if( splatsShader )
	{
		splatsShader->use();
		splatsShader->setUniform( "backfaceCulling", backfaceCulling );
		splatsShader->disable();
	}

	if( splatsPickShader )
	{
		splatsPickShader->use();
		splatsPickShader->setUniform( "backfaceCulling", backfaceCulling );
		splatsPickShader->disable();
	}

	if( dotsShader )
	{
		dotsShader->use();
		dotsShader->setUniform( "backfaceCulling", backfaceCulling );
		dotsShader->disable();
	}

	if( dotsPickShader )
	{
		dotsPickShader->use();
		dotsPickShader->setUniform( "backfaceCulling", backfaceCulling );
		dotsPickShader->disable();
	}

	if( pointsShader )
	{
		pointsShader->use();
		pointsShader->setUniform( "backfaceCulling", backfaceCulling );
		pointsShader->disable();
	}

	if( pointsPickShader )
	{
		pointsPickShader->use();
		pointsPickShader->setUniform( "backfaceCulling", backfaceCulling );
		pointsPickShader->disable();
	}
}


//----------------------------------------------------------------


/**
 * Set scale for point sizes
 */
void SplatCloudObject::setPointsizeScale( float _scale )
{
	// get drawmodes
	ACG::SceneGraph::DrawModes::DrawMode splatsDrawMode = ACG::SceneGraph::DrawModes::getDrawMode( "Splats" );
	ACG::SceneGraph::DrawModes::DrawMode dotsDrawMode   = ACG::SceneGraph::DrawModes::getDrawMode( "Dots"   );

	// if drawmodes don't exist something went wrong
	if( splatsDrawMode == ACG::SceneGraph::DrawModes::NONE || 
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	    dotsDrawMode   == ACG::SceneGraph::DrawModes::NONE )
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	{
		std::cerr << "Shader DrawModes for SplatCloud not existent!" << std::endl;
		return;
	}

	// get standard and picking shaders
	GLSL::PtrProgram splatsShader     = shaderNode_->getShader( splatsDrawMode, false );
	GLSL::PtrProgram splatsPickShader = shaderNode_->getShader( splatsDrawMode, true  );
	GLSL::PtrProgram dotsShader       = shaderNode_->getShader( dotsDrawMode,   false );
	GLSL::PtrProgram dotsPickShader   = shaderNode_->getShader( dotsDrawMode,   true  );

	// update pointsize-scale uniform of shaders

	pointsizeScale_ = _scale;
	GLfloat pointsizeScale = (GLfloat) _scale;

	if( splatsShader )
	{
		splatsShader->use();
		splatsShader->setUniform( "pointsizeScale", pointsizeScale );
		splatsShader->disable();
	}

	if( splatsPickShader )
	{
		splatsPickShader->use();
		splatsPickShader->setUniform( "pointsizeScale", pointsizeScale );
		splatsPickShader->disable();
	}

	if( dotsShader )
	{
		dotsShader->use();
		dotsShader->setUniform( "pointsizeScale", pointsizeScale );
		dotsShader->disable();
	}

	if( dotsPickShader )
	{
		dotsPickShader->use();
		dotsPickShader->setUniform( "pointsizeScale", pointsizeScale );
		dotsPickShader->disable();
	}
}


//----------------------------------------------------------------


/** This function initalizes the SplatCloud object. It creates the scenegraph nodes.
*/
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void SplatCloudObject::init( const SplatCloud *_splatCloud )
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{
	if( materialNode() == NULL )
		std::cerr << "Error when creating SplatCloud Object! materialNode is NULL!" << std::endl;

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	// if _splatCloud is *not* 0, copy it's contents
	if( _splatCloud )
	{
		delete splatCloud_;
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		splatCloud_ = new SplatCloud( *_splatCloud );
		if( !splatCloud_ )
		{
			std::cerr << "SplatCloudObject::init() : Out of memory." << std::endl;
		}
	}
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	// if something went wrong during initialization, abort
	if( !splatCloud_ )
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	{
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		shaderNode_     = 0;
		splatCloudNode_	= 0;
		return;
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	}
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	// create new scenegraph nodes
	shaderNode_     = new ShaderNode    (               materialNode(), "NEW ShaderNode for" );
	splatCloudNode_	= new SplatCloudNode( *splatCloud_, shaderNode_,    "NEW SplatCloudNode" );

	// load shaders
	reloadShaders();
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}


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//----------------------------------------------------------------


/**
 * Update object and scenegraph nodes
 */
void SplatCloudObject::update( UpdateType _type )
{
	if( _type == UPDATE_ALL )
	{
#		ifdef REPORT_UPDATE_TYPE
		std::cout << "SplatCloudObject::update() : UPDATE_ALL" << std::endl;
		std::cout << std::endl;
#		endif

		if( splatCloudNode_ )
			splatCloudNode_->modifiedAll();
		return;
	}

	if( _type.contains( UPDATE_GEOMETRY ) )
	{
#		ifdef REPORT_UPDATE_TYPE
		std::cout << "SplatCloudObject::update() : UPDATE_GEOMETRY" << std::endl;
#		endif

		if( splatCloudNode_ )
			splatCloudNode_->modifiedPoints();
	}

	if( _type.contains( updateType("Normals") ) )
	{
#		ifdef REPORT_UPDATE_TYPE
		std::cout << "SplatCloudObject::update() : UPDATE_Normals" << std::endl;
#		endif

		if( splatCloudNode_ )
			splatCloudNode_->modifiedNormals();
	}

	if( _type.contains( updateType("Pointsizes") ) )
	{
#		ifdef REPORT_UPDATE_TYPE
		std::cout << "SplatCloudObject::update() : UPDATE_Pointsizes" << std::endl;
#		endif

		if( splatCloudNode_ )
			splatCloudNode_->modifiedPointsizes();
	}

	if( _type.contains( UPDATE_COLOR ) )
	{
#		ifdef REPORT_UPDATE_TYPE
		std::cout << "SplatCloudObject::update() : UPDATE_COLOR" << std::endl;
#		endif

		if( splatCloudNode_ )
			splatCloudNode_->modifiedColors();
	}

	if( _type.contains( UPDATE_SELECTION ) )
	{
#		ifdef REPORT_UPDATE_TYPE
		std::cout << "SplatCloudObject::update() : UPDATE_SELECTION" << std::endl;
#		endif

		if( splatCloudNode_ )
			splatCloudNode_->modifiedSelections();
	}

#	ifdef REPORT_UPDATE_TYPE
	std::cout << std::endl;
#	endif
}


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//----------------------------------------------------------------
//  Name/Path Handling
//----------------------------------------------------------------


/** Set the name of an object. All Scenegraph nodes are renamed too. It also calls
* BaseObjectData::setName.
*/
void SplatCloudObject::setName( QString _name )
{
	BaseObjectData::setName( _name );

	std::string nodename;

	nodename = std::string( "ShaderNode for SplatCloud " + _name.toUtf8() );
	shaderNode_->name( nodename );

	nodename = std::string( "SplatCloudNode for SplatCloud " + _name.toUtf8() );
	splatCloudNode_->name( nodename );
}


//----------------------------------------------------------------
//  Object information
//----------------------------------------------------------------


/** Returns a string containing all information about the current object. This also
* includes the information provided by BaseObjectData::getObjectinfo
*
* @return String containing the object information
*/
QString SplatCloudObject::getObjectinfo()
{
	QString output;

	output += "========================================================================\n";
	output += BaseObjectData::getObjectinfo();

	if( dataType( DATA_SPLATCLOUD ) )
	{
		output += "Object Contains SplatCloud : ";
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		if( splatCloud_ )
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		{
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			output += " # points: " + QString::number( splatCloud_->numPoints() );
			output += ", normals used: ";    output += splatCloud_->hasNormals()    ? "true" : "false";
			output += ", pointsizes used: "; output += splatCloud_->hasPointsizes() ? "true" : "false";
			output += ", colors used: ";     output += splatCloud_->hasColors()     ? "true" : "false";
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		}

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		output += "\n";
	}

	output += "========================================================================\n";
	return output;
}


//----------------------------------------------------------------
//  Picking
//----------------------------------------------------------------


/** Given an node index from PluginFunctions::scenegraphPick this function can be used to
* check if the splatCloudNode of the object has been picked.
*
* @param _node_idx Index of the picked splatcloud node
* @return bool if the splatCloudNode of this object is the picking target.
*/
bool SplatCloudObject::picked( uint _node_idx )
{
	return ( _node_idx == splatCloudNode_->id() );
}


//----------------------------------------------------------------


void SplatCloudObject::enablePicking( bool _enable )
{
	splatCloudNode_->enablePicking( _enable );
	shaderNode_->enablePicking( _enable );
}


//----------------------------------------------------------------


bool SplatCloudObject::pickingEnabled()
{
	return splatCloudNode_->pickingEnabled();
}