BP Class: TrilerpMeshComponent

A DynamicMeshComponent which supports trilinear interpolation of the underlying mesh.

Properties

• Lattice

  Array of Vectors

  Offsets from interpolation lattice corners. Do not modify length.

  First four values represent the bottom four corners, second four the top four corners.

  Because this is a list of offsets, if all vectors are zero the trilinear interpolation will not modify the mesh, it will just return the original vertex positions.

  

• Source Bounds

  BoxSphereBounds

  The original (untransformed) bounds of the source mesh this component was initialized with.

Functions

• Centroid

  

  C++ Impl	UTrilerpMeshComponent::Centroid

  ---

  Computes the centroid of four points.

  All four points are assumed to be in the same coordinate frame.

  ---

  Inputs

  • A

    Vector

  • B

    Vector

  • C

    Vector

  • D

    Vector

  Outputs

  • Return Value

    Vector

    The centroid of A-B-C-D

• DebugDrawLattice

  

  C++ Impl	UTrilerpMeshComponent::DebugDrawLattice

  ---

  Visualizes the current lattice configuration.

  ---

  Inputs

  • Lifetime

    Float

    The duration, in seconds, to display the debug markers for.

• GetCentroid

  

  C++ Impl	UTrilerpMeshComponent::GetCentroid

  ---

  Computes the centroid (in world-space) of the specified lattice face.

  ---

  Inputs

  • Face

    ELatticeFace

    The face to get the centroid of.

    

  Outputs

  • Return Value

    Vector

    The centroid of the target Face.

• GetCornersWS

  

  C++ Impl	UTrilerpMeshComponent::GetCornersWS

  ---

  Gets the world-space positions of the Lattice corners (including offsets).

  ---

  Outputs

  • Return Value

    Array of Vectors

    The world-space positions of the current lattice points.

    

• GetSourceCornersWS

  

  C++ Impl	UTrilerpMeshComponent::GetSourceCornersWS

  ---

  Gets the world-space positions of the untransformed Lattice corners. i.e. the original/base position based on the input mesh bounds.

  ---

  Outputs

  • Return Value

    Array of Vectors

    The world-space positions of the untransformed lattice points.

    

• InitFromDynamicMesh

  

  C++ Impl	UTrilerpMeshComponent::InitFromDynamicMesh

  ---

  Initializes the dynamic mesh from another given dynamic mesh.

  ---

  Inputs

  • Mesh

    Dynamic Mesh

    Mesh to copy from.

  Outputs

  • Return Value

    bool

    True if copying the mesh data was successful, otherwise False.

• InitFromSkeletalMesh

  

  C++ Impl	UTrilerpMeshComponent::InitFromSkeletalMesh

  ---

  Initializes the dynamic mesh from a given skeletal mesh.

  ---

  Inputs

  • Mesh

    Skeletal Mesh

    Mesh to copy from.

  Outputs

  • Return Value

    bool

    True if copying the mesh data was successful, otherwise False.

• InitFromStaticMesh

  

  C++ Impl	UTrilerpMeshComponent::InitFromStaticMesh

  ---

  Initializes the dynamic mesh from a given static mesh.

  ---

  Inputs

  • Mesh

    Static Mesh

    Mesh to copy from.

  • Include Collision

    EIncludeCollisionType

    If not set to None, then will also copy the given static mesh's collision data and update/generate collisions each time UpdateMesh is called.

  Outputs

  • Return Value

    bool

    True if copying the mesh data was successful, otherwise False.

• RotateFace

  

  C++ Impl	UTrilerpMeshComponent::RotateFace

  ---

  Applies a rotation to one whole side of the lattice, relative to its current orientation, around the centroid of the face vertices.

  Calls UpdateMesh.

  ---

  Inputs

  • Face

    ELatticeFace

    Face to rotate.

    

  • Rotation

    Rotator

    Rotation to apply.

• ScaleFace

  

  C++ Impl	UTrilerpMeshComponent::ScaleFace

  ---

  Scales a face by moving its corners relative to their centroid.

  Calls UpdateMesh.

  ---

  Inputs

  • Face

    ELatticeFace

    Face to Scale.

    

  • Scale

    Vector

    Scale factor

• SetFaceTranslation

  

  C++ Impl	UTrilerpMeshComponent::SetFaceTranslation

  ---

  Sets the translation (absolute movement) of one whole side of the lattice, relative to the base position of the vertices on that face.

  Given translation is expected to be in world space.

  Calls UpdateMesh.

  ---

  Inputs

  • Face

    ELatticeFace

    Face to translate.

    

  • Translation

    Vector

• SetLatticeWS

  

  C++ Impl	UTrilerpMeshComponent::SetLatticeWS

  ---

  Sets the lattice corners to the given world-space coordinates.

  ---

  Inputs

  • WSLattice

    Array of Vectors

    New lattice points, in world-space. Should have length 8.

    

• TranslateFace

  

  C++ Impl	UTrilerpMeshComponent::TranslateFace

  ---

  Applies a translation (relative movement) to one whole side of the lattice.

  Given translation is expected to be in world space.

  Calls UpdateMesh.

  ---

  Inputs

  • Face

    ELatticeFace

    Face to translate.

    

  • Delta Translation

    Vector

    Relative translation amount.

• UpdateMesh

  

  C++ Impl	UTrilerpMeshComponent::UpdateMesh

  ---

  Updates the underlying mesh data to match the current Lattice configuration.

  Should be called whenever Lattice has been modified to keep the mesh up-to-date.

  ---

For any questions, help, suggestions or feature requests, please feel free to contact me at nbpsup@gmail.com