The HBSNumerics TriGrid is a software utility that enables you to divide any closed 2D area into triangles for later finite element modeling processes. It requires a closed 2D area that runs in a clockwise or a counter-clockwise direction. You may create any number of shapes (regions) which can be directly triangulated or after applying some transformations and/or processing. Transformations such as move, scale, rotate, and skew may be applied to any shape. You may also combine shapes using either Union, Intersect or Exclude.
Via Combine – Exclude, you may exclude a shape from the other, hence creating holes inside shapes in a very simple step. You may undo all changes without limit or redo them again! Sometimes, you may need to edit (drag, insert, or delete) points or nodes on the shape. This is simply done by selecting one of the editing methods under the Point menu item. For example, if the points are pretty close to each other, you may delete the extra points. Similarly, if points are far apart from each other, you may insert more points. In some odd cases, the Generate process may fail if nodes are not well placed, hence you must edit those points.
You have two icons to help you draw or trace highly irregular 2D shapes. The Line and Stroke icons. Click the Line icon to start drawing a polyline shape. When finished, press the RMB. Press Enter once to use default parameters.
Characteristics of a certain geometry may be displayed via the Geometry toolbar located at the top right of the screen. The View Toolbar is used to view almost all properties related to the generated mesh; e.g. nodes, numbers, boundary and path, and control volumes and circle packing of the generated mesh as shown next. View buttons are toggles to allow display/hide capabilities.