Method Bind

trinity/Particle/Tr2PlaneConstraint.cpp:197–255

-------------------------------------------------------------------------------------- Description: Implements ITr2GenericParticleConstraint interface. A chance for constraint to bind itself to a particle system. Called when constaint is added to the particle system or when system is re-binded. Arguments: system - Particle system the constaint is attached to. --------------------------------------

//   system - Particle system the constaint is attached to.
// --------------------------------------------------------------------------------------
void Tr2PlaneConstraint::Bind( Tr2ParticleSystem* system )
{
	m_isValid = false;
	const Tr2ParticleElementDataMap& declaration = system->GetElementDeclaration();

	Tr2ParticleElementDeclarationName position( Tr2ParticleElementDeclarationName::POSITION );
	auto i = declaration.find( position );
	if( i == declaration.end() )
	{
		CCP_LOGERR( "Tr2PlaneConstraint needs POSITION particle element in the system" );
		return;
	}
	else
	{
		m_positionElement = i->second;
	}

	Tr2ParticleElementDeclarationName velocity( Tr2ParticleElementDeclarationName::VELOCITY );
	i = declaration.find( velocity );
	if( i == declaration.end() )
	{
		m_velocityElement.m_bufferType = m_velocityElement.GPU;
		m_velocityElement.m_offset = -1;
	}
	else
	{
		m_velocityElement = i->second;
	}

	if( !m_particleRadiusComponent.empty() )
	{
		Tr2ParticleElementDeclarationName size( Tr2ParticleElementDeclarationName::CUSTOM, m_particleRadiusComponent.c_str() );
		i = declaration.find( size );
		if( i == declaration.end() )
		{
			CCP_LOGERR( "Tr2PlaneConstraint can not find particle size component \"%s\" in thesystem", m_particleRadiusComponent.c_str() );
			return;
		}
		else
		{
			m_radiusElement = i->second;
		}
	}
	else
	{
		m_radiusElement.m_bufferType = m_radiusElement.GPU;
		m_radiusElement.m_offset = -1;
	}

	std::set<Tr2ParticleElementDeclarationName> boundElements;
	for( auto it = m_generators.begin(); it != m_generators.end(); ++it )
	{
		if( !( *it )->Bind( declaration, boundElements ) )
		{
			return;
		}
	}
	m_isValid = true;