Method GetBounds

trinity/Tr2MeshBase.cpp:249–308

}

CcpMath::AxisAlignedBox Tr2MeshBase::GetBounds( const Matrix* boneTransforms, const int32_t* meshBindingIndices, size_t boneCount, const Tr2MorphTargetAnimationData* morphTargets, size_t morphTargetsCount ) const
{
	if( boneTransforms )
	{
		if( auto geometry = GetGeometryResource() )
		{
			TriGeometryResMeshData* meshData = geometry->GetMeshData( m_meshIndex );
			TriGeometryResLodData* lod = geometry->GetMeshLod( m_meshIndex, 0 );

			if( !m_jointMappingAnimRig.empty() )
			{
				// for old character stuff
				boneCount = m_jointMappingAnimRig.size();
				meshBindingIndices = (const int32_t*)m_jointMappingAnimRig.data();
			}

			if( meshData && boneCount > 0 )
			{
				auto aabb = CcpMath::AxisAlignedBox();
				for( size_t i = 0; i < boneCount; ++i )
				{
					auto& joint = meshData->m_jointBindings[i];
					auto& m = boneTransforms[meshBindingIndices[i]];

					Vector3 rightMin = m.GetX() * joint.m_obbMin.x;
					Vector3 upMin = m.GetY() * joint.m_obbMin.y;
					Vector3 forwardMin = m.GetZ() * joint.m_obbMin.z;
					Vector3 rightMax = m.GetX() * joint.m_obbMax.x;
					Vector3 upMax = m.GetY() * joint.m_obbMax.y;
					Vector3 forwardMax = m.GetZ() * joint.m_obbMax.z;
					Vector3 translation = m.GetTranslation();

					Vector3 a;
					a.x = min( rightMin.x, rightMax.x ) + min( upMin.x, upMax.x ) + min( forwardMin.x, forwardMax.x ) + translation.x;
					a.y = min( rightMin.y, rightMax.y ) + min( upMin.y, upMax.y ) + min( forwardMin.y, forwardMax.y ) + translation.y;
					a.z = min( rightMin.z, rightMax.z ) + min( upMin.z, upMax.z ) + min( forwardMin.z, forwardMax.z ) + translation.z;
					aabb.IncludePoint( a );

					Vector3 b;
					b.x = max( rightMin.x, rightMax.x ) + max( upMin.x, upMax.x ) + max( forwardMin.x, forwardMax.x ) + translation.x;
					b.y = max( rightMin.y, rightMax.y ) + max( upMin.y, upMax.y ) + max( forwardMin.y, forwardMax.y ) + translation.y;
					b.z = max( rightMin.z, rightMax.z ) + max( upMin.z, upMax.z ) + max( forwardMin.z, forwardMax.z ) + translation.z;
					aabb.IncludePoint( b );
				}

				float morphDeformation = 0.f;
				for( size_t i = 0; i < morphTargetsCount; i++ )
				{
					auto morph = morphTargets[i];
					CCP_ASSERT_M( morph.m_index < lod->m_morphTargetDeformationAmounts.size(), "Tr2MeshBase::GetBounds: morph.m_index is too large!" );
					morphDeformation += lod->m_morphTargetDeformationAmounts[morph.m_index] * morph.m_weight;
				}
				aabb.Grow( morphDeformation );

				return m_boundsAdjustment.AdjustBounds( aabb );
			}
		}
	}