Delete invalid triangles
This function allows you to delete the invalid triangles from the trisolations in an object loaded in graphics. Invalid triangles are those triangles which are either attached to invalid edges or self-intersecting. An edge becomes invalid when more than two triangles share the same edge.
To run this function: Choose Solids > Edit object > , or...
Delete invalid triangles form
Layer name
Display only. The name of the active layer is displayed. The active layer is the only layer from which you are able to delete invalid triangles.
Object range
This is the object range which is be analysed for invalid triangles. If you leave this field blank then ALL the objects in the current layer will be processed.
Delete invalid triangles
- Delete triangles attached to invalid edges
Select this option when triangles attached to invalid edges are to be deleted. For a trisolation to be considered valid no more than two triangles are permitted to share a common edge. If more than two triangles share an edge then all of them will be deleted. - Delete self intersecting triangles
Select this option to delete the self intersecting triangles. Note: Invalid edges must be removed before deleting self intersecting triangles.
Colour
Enter the colour to highlight invalid edges or self intersecting triangles in a trisolation.
Display invalid triangles
Press this button to display the sides of the triangles attached to invalid edges or self intersecting triangles.
Number of triangles
Display only. This shows the number of triangles attached to invalid edges or self intersecting triangles.