Reading 12da into 12d Model

Data to create a tin (sometimes called a mesh, or a triangulation) can come from a variety of sources: 12d ascii (from 12d Model) Simple list of coordinates and elevations (x,y,z format) AutoCAD .dxf or .dwg GENIO format (from MOSS or MX) CivilCAD (.as5) Microstation .dgn For this instance, we will read in 12d ascii [...]
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