unreal.GeometryScript_Polygroups

class unreal.GeometryScript_Polygroups(outer: Optional[Object] = None, name: Union[Name, str] = 'None')

Bases: BlueprintFunctionLibrary

Geometry Script Library Mesh Polygroup Functions

C++ Source:

• Plugin: GeometryScripting

• Module: GeometryScriptingCore

• File: MeshPolygroupFunctions.h

classmethod clear_polygroups(target_mesh, group_layer, clear_value=0, debug=None) → DynamicMesh

Clear Polygroups

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• clear_value (int32) –

• debug (GeometryScriptDebug) –

Return type:

DynamicMesh

classmethod compute_polygroups_from_angle_threshold(target_mesh, group_layer, crease_angle=15.000000, min_group_size=2, debug=None) → DynamicMesh

Compute Polygroups from Angle Threshold

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• crease_angle (float) –

• min_group_size (int32) –

• debug (GeometryScriptDebug) –

Return type:

DynamicMesh

classmethod compute_polygroups_from_polygon_detection(target_mesh, group_layer, respect_uv_seams=True, respect_hard_normals=False, quad_adjacency_weight=1.000000, quad_metric_clamp=1.000000, max_search_rounds=1, debug=None) → DynamicMesh

Compute Polygroups from Polygon Detection

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• respect_uv_seams (bool) –

• respect_hard_normals (bool) –

• quad_adjacency_weight (double) –

• quad_metric_clamp (double) –

• max_search_rounds (int32) –

• debug (GeometryScriptDebug) –

Return type:

DynamicMesh

classmethod convert_components_to_polygroups(target_mesh, group_layer, debug=None) → DynamicMesh

Convert Components to Polygroups

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• debug (GeometryScriptDebug) –

Return type:

DynamicMesh

classmethod convert_uv_islands_to_polygroups(target_mesh, group_layer, uv_layer=0, debug=None) → DynamicMesh

Convert UVIslands to Polygroups

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• uv_layer (int32) –

• debug (GeometryScriptDebug) –

Return type:

DynamicMesh

classmethod copy_polygroups_layer(target_mesh, from_group_layer, to_group_layer, debug=None) → DynamicMesh

Copy Polygroups Layer

Parameters:

• target_mesh (DynamicMesh) –

• from_group_layer (GeometryScriptGroupLayer) –

• to_group_layer (GeometryScriptGroupLayer) –

• debug (GeometryScriptDebug) –

Return type:

DynamicMesh

classmethod delete_triangles_in_polygroup(target_mesh, group_layer, polygroup_id, defer_change_notifications=False, debug=None) -> (DynamicMesh, num_deleted=int32)

Delete Triangles in Polygroup

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• polygroup_id (int32) –

• defer_change_notifications (bool) –

• debug (GeometryScriptDebug) –

Returns:

num_deleted (int32):

Return type:

int32

classmethod enable_polygroups(target_mesh, debug=None) → DynamicMesh

Enable Polygroups

Parameters:

• target_mesh (DynamicMesh) –

• debug (GeometryScriptDebug) –

Return type:

DynamicMesh

classmethod get_all_triangle_polygroup_i_ds(target_mesh, group_layer, polygroup_i_ds_out) -> (DynamicMesh, polygroup_i_ds_out=GeometryScriptIndexList)

Create list of per-triangle Polygroup IDs for the Polygroup in the Mesh warning: if the mesh is not Triangle-Compact (eg GetHasTriangleIDGaps == false) then the returned list will also have the same gaps

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• polygroup_i_ds_out (GeometryScriptIndexList) –

Returns:

polygroup_i_ds_out (GeometryScriptIndexList):

Return type:

GeometryScriptIndexList

classmethod get_polygroup_i_ds_in_mesh(target_mesh, group_layer, polygroup_i_ds_out) -> (DynamicMesh, polygroup_i_ds_out=GeometryScriptIndexList)

Create list of all unique Polygroup IDs that exist in the Polygroup Layer in the Mesh

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• polygroup_i_ds_out (GeometryScriptIndexList) –

Returns:

polygroup_i_ds_out (GeometryScriptIndexList):

Return type:

GeometryScriptIndexList

classmethod get_triangle_polygroup_id(target_mesh, group_layer, triangle_id) -> (int32, is_valid_triangle=bool)

Get Triangle Polygroup ID

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• triangle_id (int32) –

Returns:

is_valid_triangle (bool):

Return type:

bool

classmethod get_triangles_in_polygroup(target_mesh, group_layer, polygroup_id, triangle_i_ds_out) -> (DynamicMesh, triangle_i_ds_out=GeometryScriptIndexList)

Create list of all triangles with the given Polygroup ID in the given GroupLayer (not necessarily a single connected-component)

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• polygroup_id (int32) –

• triangle_i_ds_out (GeometryScriptIndexList) –

Returns:

triangle_i_ds_out (GeometryScriptIndexList):

Return type:

GeometryScriptIndexList

classmethod set_num_extended_polygroup_layers(target_mesh, num_layers, debug=None) → DynamicMesh

Set Num Extended Polygroup Layers

Parameters:

• target_mesh (DynamicMesh) –

• num_layers (int32) –

• debug (GeometryScriptDebug) –

Return type:

DynamicMesh

classmethod set_polygroup_for_mesh_selection(target_mesh, group_layer, selection, set_polygroup_id=0, generate_new_polygroup=False, defer_change_notifications=False) -> (DynamicMesh, set_polygroup_id_out=int32)

Set a new Polygroup on all the triangles of the given Selection, for the given GroupLayer.

Parameters:

• target_mesh (DynamicMesh) –

• group_layer (GeometryScriptGroupLayer) –

• selection (GeometryScriptMeshSelection) –

• set_polygroup_id (int32) – explicit new PolygroupID to set

• generate_new_polygroup (bool) – if true, SetPolygroupID is ignored and a new unique PolygroupID is generated

• defer_change_notifications (bool) – if true, the UDynamicMesh does not emit a change event/signal for this modification

Returns:

set_polygroup_id_out (int32): the PolygroupID that was set on the triangles is returned here (whether explicit or auto-generated)

Return type:

int32