Triangle Edit menu contents

Overview

This section provides a summary of the Triangle Edit submenu and its available options.

Analyse Triangles

The Analyse Triangles option generates simple statistics (such as area and surface area) on the triangles (facets) in a triangulation. This information can be used to locate and analyse any problem areas in the triangulation.

Analyse Vertices

The Analyse Vertices option generates statistics on the points in a triangulation. This information can be used to locate and analyse any problem areas in the triangulation.

Problem Areas

The Problem Areas option highlights triangles (facets) and edges that do not meet a required tolerance (minimum edge length and/or angle). This information can be used to examine areas that may have been the cause of erroneous results in other applications.

Dump

Use the Dump option to dump triangulation information, such as points, triangle objects and centroids, into either an underlay or design layer. Dumping various attributes of a triangulation enables you to take advantage of the design data editing and labelling tools.

Filter

Use the Filter option to reduce the size and complexity of triangulations by removing triangles that meet specified criteria.

Simple Outlier

Use the Simple Outlier option to delete outlier vertices and all triangles (facets) connected to them from a triangulation.

Small Triangles

The Small Triangles option to delete triangles (facets) that do not meet a required area or angle tolerance. This option will delete the vertices connected to the triangles and patch up the holes that have been left in the triangulation.

Clip By Polygon

Use the Clip by Polygon option to clip a triangulation to either one or a series of polygons. Triangles (facets) are deleted depending on whether they are totally inside or totally outside the selected polygon(s).

Snap Vertices

Use the Snap Vertices option to snap vertices together if they lie in a specified distance of each other. This will close triangulations with numerical inaccuracies and remove very small triangles (facets).

Connect Vertices

The Connect Vertices option will repair triangulations with an invalid topology.

Delete Crossing Triangles

Use the Delete Crossing Triangles option to remove crossing, i.e. self intersecting, triangles (facets).

Interpolate

Use the Interpolate option to add points and triangles (facets) to a triangulation thus creating a more regular mesh.

Extrapolate

Use the Extrapolate option to extend a triangulated surface beyond the known data region.

Line Split

Use the Line Split option to add points and triangles (facets) to a triangulation thus creating a more regular mesh.

Add Vertex

Use the Add Vertex option to insert a vertex into a triangulation.

Delete Vertex

Use the Delete Vertex option to remove a vertex from a triangulation.

Flip Triangles

Use the Flip Triangles option to flip the display of triangles (facets).

To Grid Mesh

Use the To Grid Mesh option to construct a grid mesh model from a triangulation.

From Triangles

Use the From Triangles option to convert triangular design objects (created through the Dump option) into triangulations.

Update With Points

Use the Update with points option to update triangulations using points digitised or by selecting an origin to get the points.