An Open-source TIN entity

[Danielm103]

Just having some fun… A custom object that does triangulation and contours. Its very fast (I think)

I’ve only tested on one drawing;

 

Binaries are in the release folder here  (AutoCAD 2025-2026, ZwCAD 2025-2026, GstarCAD 2026)

https://github.com/CEXT-Dan/ArxTin

 

Command: TINNER

Select objects: Specify opposite corner: 41769 found

Select objects:

Enter a major contour interval: 100

Enter a minor contour interval: 10

CArxTinUIApp::CArxTinUIApp_tinner Done , 0.000235 seconds

 

Command: LIST

Select objects:

                  CEXTDBTIN  Layer: "tin"

                   Space: Model space

                   Color: BYLAYER    Linetype: "Continuous"

                   Handle = cb4cf

Number of points:     41769

Number of triangles:  82720

Minimum elevation:    5503.992569

Maximum elevation:    7060.996567

          2D area:    37224000.000000

          3D area:    47335595.172935

 

 

[Danielm103]

There’s a sample point drawing on github

TIN, Major and Minor and have transparency, but they are currently hard coded to TIN 50%, Minor 50%, Major %100

 

[Danielm103]

Oh, explode will create polylines and faces

Edited July 18 by Danielm103

[BIGAL]

Looks good,  next option would be "Add breaklines" to make the TIN take into account edges.