Interactive Drape – Import Options

Importing .STL Files (ASCII)

At present Interactive Drape supports the import of ASCII .stl files. Binary .stl files are not yet supported but its on the to do list. For draping one does not need a highly accurate model surface and thus there is no need to generate highly detailed and large .stl files. Often the size of the .stl is dominated by small regions of high curvature which are not critical for draping. To speed up model import, try to reduce the size of the .stl file. This can be done in many CAD programs.

Importing Plain Text files

Interactive Drape can read in a plain text file containing first a list of node coordinates followed by a blank line followed by list of triangular elements defined by triplets of vertex numbers. The node list should be ordered such that the node number is the same as its position in the list i.e. the first in the list is node #1 and the second is node #2 etc. The triangular elements are made up of triplets of numbers representing the node number for each vertex and ordered according to the right hand rule.


blank line

Import Options

“Use Closed Surface”

The default with unchecked state will allow the software to import the surface while removing any undercut areas. See the diagram below.


“Edge Tolerance”

This feature tells the software to find edges automatically as described in the diagram below. This is particularly useful when draping onto a model of the tool.


There is also an option to scale the model to allow for unit conversions. The default is 1%. The “update model” button performs the conversion and by default will scale the model to 1% of the original size.