topic Re: 3D stretchable hotspots in Libraries & objects

3D stretchable hotspots

dhaval7shah — Tue, 12 Oct 2010 13:04:41 GMT

1) How to script editable 3d stretchy hotspots ?
2) I want a 3D pole element with Ellipse at base and circle at top, how should we script it?

Re: 3D stretchable hotspots

Erich — Tue, 12 Oct 2010 19:40:05 GMT

First you should look at the GDL Reference Guide available as a pdf from your Help menu.

3D hotspots are written with three lines of code as follows:

	HOTSPOT 0, 0, 0,   unid, var, 1+128 : unid=unid+1 !base
	HOTSPOT 0, 0, var, unid, var,     2 : unid=unid+1 !move
	HOTSPOT 0, 0, -1,  unid, var,     3 : unid=unid+1 !reference

This bit of code will create a hotspot to control the parameter var stretchable in the Z direction. This parameter must also be present in your parameter table. Also note that each hotspot has a unique id number. I find it good practice to define unid=1 at the begining of my scripts and then the the notation

: unid = unid+1

after each hotspot definition to avoid getting duplicate hotspot ids.

As for the sphere/pole/ellipse there are many ways. Look at the SPHERE, ELLIPS and CYLIND commands for a start.

HTH

Re: 3D stretchable hotspots

David Maudlin — Wed, 13 Oct 2010 13:27:38 GMT

dhaval7shah wrote:
2) I want a 3D pole element with Ellipse at base and circle at top, how should we script it?

Dhaval:

You should look at the RULED command, page 92 of the GDL Reference Guide, this creates a form with different polygons on each end.

David

Re: 3D stretchable hotspots

dhaval7shah — Wed, 13 Oct 2010 18:40:34 GMT

Thanks a lot Erich and David.