ORD : THIN TERRAIN MESH

Question

I have an ORD terrain mesh that is 800Mb. What tools can be used in ORD to reduce the file size? 
 I Geopak in the old days there were tools to thin TIN files? 
 I undestand that the accuracy of the terrain mesh will decrease but that is not an issue.

vincent · Answer

The Thinning tools are available in import tools, so if you already have a Terrain you want to thing out, export it and reimport it, doing you will have access to thinning options.

vincent · Answer

If Using Bspline contours as elevation source, then proper settings are in the configuration file:

Martin Koekemoer · Answer

Ok I manged to find the solution while working on another project. When importing the files whatever format you can use the ORD Terrain Filter (see image below) which has the old tools from Geopak. Awesomeness. 
 The funny thing I could not find anything on the Communities page about this. Maybe a video on how to do this would be another great feature.

vincent · Answer

Hello, 
 Sorry for delay - the option is only available when you use Import formats dealing with points, such as 
 
 Create TM from file, XYZ format, LAS format 
 Create TM from Point CLouds 
 
 Details about thinning can be fouind in OpenRoads help file . 
 So you would need to export your surface in one of these formats, to have ability to filter importing back the points.

vincent · Answer

You are correct, the contour thinning settings applies on linestrings and not Bsplines, 
 But these setting does enable control on density of points taken into account, which is the desired result. 
 You may generate Terrain, check result, change settings, then retriangulate without having to relaunch ORD. 
 HTH

The test file is attached. B-spline.dgn

ORD : THIN TERRAIN MESH

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