# Surface Mesh Diagnostics

The Surface Mesh Diagnostics tool provides comprehensive analysis capabilities for assessing the quality of surface meshes. When a surface mesh is loaded, this tool becomes available to help identify potential mesh quality issues.

# Overview

The Surface Mesh Diagnostics tool opens a dedicated panel that allows you to inspect surface mesh quality based on pre-computed metrics. This tool is essential for:

  • Identifying poor quality mesh elements
  • Verifying mesh quality before volume mesh generation
  • Understanding mesh characteristics across different surfaces
  • Diagnosing potential issues that could affect simulation accuracy

# Accessing Surface Mesh Diagnostics

The Surface Mesh Diagnostics tool is available when:

  • A surface mesh is loaded in the viewer
  • The "Surface Mesh Diagnostic" button appears in the viewer toolbar

InspectionButton

  • Clicking the button opens the "Surface Mesh Diagnostic" interface

# Diagnostic Features

# Quality Metrics

The "Surface mesh metrics" section provides access to various pre-computed mesh quality metrics through a searchable dropdown:

  • None: Option to disable metric visualization
  • Area: Surface element area
  • Aspect Ratio: Ratio of longest to shortest edge
  • Incircle/Circumcircle Radius Ratio Quality: Quality measure based on inscribed and circumscribed circles
  • Maximum Angle: Largest angle in the element
  • Minimum Angle: Smallest angle in the element
  • Minimum Edge Length: Shortest edge length in the element
  • Skewness Quality: Measure of element distortion

The dropdown includes a search bar that allows you to quickly find metrics by typing (e.g., typing "Area" highlights the Area option).

# Surfaces List

The diagnosis settings panel includes a "Surfaces list" section that allows you to select which surfaces to analyze:

  • Search bar: Search bar with magnifying glass icon to filter surfaces by name
  • Surface selection: List of available surfaces (e.g., "body00001")

# Quality Filtering

The "Poor quality elements" tab allows you to filter and identify problematic mesh elements:

  • Metric selection: Choose a mesh quality metric from the dropdown (e.g., Aspect Ratio)
  • Condition operators: Set comparison operators (">", "<", ">=", "<=", "=", "≠")
  • Threshold values: Enter numerical thresholds (e.g., "25" for Aspect Ratio > 25)
  • Add conditions: Use the "+ Add condition" button to combine multiple quality criteria
  • Apply filters: Click the green "Apply" button to filter elements based on conditions

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