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CAD tip CAD tip # 7329:

Question CAD 
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Q - question

Draw 3D polyline by length, azimuth, slope.

A - answer With a simple LISP utility 3DPolyC, you can draw a 3DPoly by entering length (3D length), azimuth (in degrees, from North) and slope (in percents, plus/minus) if its individual points (segments). This could be useful for piping, geology or similar applications.

The triplets you enter for the individual vertices of the 3D polyline are not X,Y,Z coordinates but the values of length,azimuth,slope (e.g. 123.4,20,-50 - segment 123.4m, in the 20° direction, descending 50%).

You can download the free 3DPolyC utility from www.cadstudio.cz/download, load it with APPLOAD and start it with the 3DPOLYC command.

ACAD
100% *  CAD 
26.4.2010    8127x  
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applies to: AutoCAD ·

See also:
Tip 11179:Select objects in negative elevation or in a given 3D octant.
Tip 11074:How to convert a 2D polyline to 3D or vice-versa?
Tip 11054:Difference volume (3D solid) between two TIN surfaces (sets of coordinates)
Tip 10926:Self-intersecting polylines and polylines with duplicate vertices.
Tip 10636:The entity isn't planar to the World Coordinate System and can't be converted.


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