topic Different drawing depending on scale in Libraries & objects

Different drawing depending on scale

Anonymous — Sat, 16 Apr 2011 10:44:29 GMT

Well, seems I am always having this problem, anytime I try to use an object downloaded from the internet, or from a manufacturer.

The drawing is not scale sensitive. It doesn't matter if its scale 1:400 or 1:20, the object appearance is exactly the same.

Is there a simple way to modify the object and provide an extra drawing for different scale?

Thank you!

Re: Different drawing depending on scale

Anonymous — Sun, 17 Apr 2011 07:24:45 GMT

There aren't simple way. You have to modify the 2D script for diffrent scale.

Re: Different drawing depending on scale

Anonymous — Sun, 17 Apr 2011 08:19:11 GMT

Seems that I will place objects in one layer, and show in plans 1:50 and 1:20.

For plans in 1:300 I will have to create a different layer, and only draw in 2D.

Well, more elements to maintain, in case there are changes to the project.

If somebody can suggest me a different approach... Thank you!

Re: Different drawing depending on scale

Anonymous — Sat, 13 Aug 2011 14:12:19 GMT

ila2 wrote:
There aren't simple way. You have to modify the 2D script for diffrent scale.

Just asking again... Is there any tutorial where I can learn how to add different views to an existing object?

I really appreciate your assistance.

Re: Different drawing depending on scale

Anonymous — Sat, 13 Aug 2011 15:10:06 GMT

If the parts are not highly parametric (if they have a fixed size in plan) modifying the symbol display to be scale sensitive is not that hard.

The 2D symbol uses 16 "fragments" which function like layers. You can draw the symbols you want on different fragments for each scale and then write a simple script to pick the symbol to use according to the current scale.

A very simple version would be:

IF GLOB_SCALE > 50 THEN
    Fragment2 1, 0
ELSE
    Fragment 2, 0
ENDIF

A little more complex:

IF GLOB_SCALE >= 100 THEN
    Fragment2 1, 0
ENDIF

IF GLOB_SCALE < 100 AND GLOB_SCALE >= 50 THEN
    Fragment2 2, 0
ENDIF

IF GLOB_SCALE < 50 THEN
    Fragment2 3, 0
ENDIF

The first number after Fragment2 is the number of the fragment you want to show at the given scale. The second number determines whether to use the line and pen settings of the fragment (value of 0) or to override with settings from the script (value of 1).

Re: Different drawing depending on scale

Anonymous — Sun, 14 Aug 2011 19:15:15 GMT

Thank you Matthew for this great and useful explanation. My experience with GDL is null, but I will try to import a 3DS model and add some modifications for my school project.

Thank you!!