BlenderMCP

Feature: Topology Selection Tools As a retopology artist I want to select mesh elements by topology criteria So that I can quickly identify and work on problem areas Background: Given the MCP server is running And the Blender addon is connected And a mesh object is active in Edit Mode # ============================================================================ # select_by_valence - Select Vertices by Edge Count # ============================================================================ Scenario: Select vertices by valence threshold Given a mesh with mixed vertex valence When I call select_by_valence with object_name="Mesh" and min_valence=5 Then vertices with >= 5 edges are selected And the selection_count is returned And I can see the selection in the viewport Scenario Outline: Select different valence levels When I call select_by_valence with min_valence=<valence> Then only vertices with >= <valence> edges are selected Examples: | valence | | 3 | | 5 | | 6 | Scenario: No vertices match valence criteria Given a mesh with maximum valence 4 When I call select_by_valence with min_valence=5 Then selection_count is 0 And a message indicates no vertices match criteria # ============================================================================ # select_triangles - Select All Triangle Faces # ============================================================================ Scenario: Select all triangle faces Given a mesh containing triangles and quads When I call select_triangles with object_name="Mesh" Then all triangle faces are selected And the selection_count matches triangle count And quad faces remain unselected Scenario: No triangles to select Given a mesh with only quad faces When I call select_triangles Then selection_count is 0 And a message indicates no triangles found # ============================================================================ # select_ngons - Select All N-gon Faces # ============================================================================ Scenario: Select all n-gon faces Given a mesh containing n-gons When I call select_ngons with object_name="Mesh" Then all n-gon faces (5+ vertices) are selected And the selection_count matches n-gon count And quads and triangles remain unselected Scenario: No n-gons to select Given a mesh with only quads and triangles When I call select_ngons Then selection_count is 0 And a message indicates no n-gons found # ============================================================================ # select_edge_loop - Select Complete Edge Loop # ============================================================================ Scenario: Select edge loop by edge index Given a mesh with complete edge loops When I call select_edge_loop with object_name="Mesh" and edge_index=42 Then the complete edge loop containing edge 42 is selected And the selection_count indicates loop edge count Scenario: Select edge loop on boundary Given a mesh with boundary edges When I call select_edge_loop with edge_index on a boundary edge Then the boundary edge loop is selected And partial loop is handled correctly Scenario: Invalid edge index When I call select_edge_loop with edge_index=999999 Then I receive an error message And the error indicates edge index out of range # ============================================================================ # Combined Selection Workflows # ============================================================================ Scenario: Select all topology problems at once Given a mesh with triangles, n-gons, and high-valence vertices When I call select_triangles And I extend selection with select_ngons And I extend selection with select_by_valence with min_valence=5 Then all problem topology is selected And I can review or fix the issues # ============================================================================ # Error Handling # ============================================================================ Scenario: Select on non-mesh object Given a curve object is active When I call select_triangles Then I receive an error message And the error indicates object must be a mesh Scenario: Select in Object Mode Given a mesh in Object Mode When I call select_by_valence Then the mesh is switched to Edit Mode automatically And the selection is performed