evo-mesh-geometry-analysis

Performs connected component analysis on triangle meshes using BFS with vertex adjacency and computes mesh volume via the signed tetrahedron method. Handles unit conversion and mass calculation.

SKILL.md

GitHub

evo-mesh-geometry-analysis

Mesh topology and volume computation.

Key Functions

  • get_largest_connected_component(triangles, rounding_decimals=4) - Find largest connected component via vertex-based BFS adjacency with 4-decimal quantization
  • compute_mesh_volume(triangles) - Volume via signed tetrahedron method: abs(sum(v1.(v2×v3)))/6.0
  • convert_volume_mm3_to_cm3(volume_mm3) - Divide by 1000
  • calculate_mass(volume_cm3, density_g_cm3) - Mass = Volume × Density

Usage

import sys
sys.path.insert(0, '/app/environment/skills/evo-mesh-geometry-analysis/scripts')
from utils import get_largest_connected_component, compute_mesh_volume, convert_volume_mm3_to_cm3, calculate_mass

largest = get_largest_connected_component(triangles)
vol_mm3 = compute_mesh_volume(largest)
vol_cm3 = convert_volume_mm3_to_cm3(vol_mm3)
mass = calculate_mass(vol_cm3, density)

Critical Details

  • Vertex quantization: 4 decimal places
  • Adjacency: vertex-based (share ANY vertex = connected)
  • Volume formula: V = abs(Σ v1·(v2×v3)) / 6.0
  • Unit conversion: mm³ / 1000 = cm³

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