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From: dewolfe@ug.cs.dal.ca (Colin DeWolfe)
Newsgroups: comp.sys.amiga
Subject: Re: Cad??
Message-ID: <1990Dec13.175055.4731@cs.dal.ca>
Date: 13 Dec 90 17:50:55 GMT
References: <1990Dec6.170222.3600@cs.dal.ca> <2664@kirk.nmg.bu.oz>
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In article <2664@kirk.nmg.bu.oz> cameron@kirk.nmg.bu.oz (Cameron Stevenson) writes:
>Just a few small points:
>
>
>>>1. full 3D, with the ability to define 2D specific view information (most real
>>>world objects are 3D, but require 2D drawing representations of the object to
>>>be built. The CAD system should be able to maintain the linkage between this
>>>3D/2D data.)
>> 
>> X-Cad 3D has this...
> 
>I'm not going to correct you on this one. I'll just say that I didn't see the
>capability when I looked at X-Cad, and would be surprised if it was there. To
>re-iterate: drawing views of an object (because of the nature of drawings)
>should be different to 2D views of the 3D model. A good example (that I have
>quoted before) is of a door. In 3D you usually want to see it closed, with
>door handle, etc; in plan it will be shown open with a swing; in elevation it
>will be shown closed again, in section the door is usually not shown at all.
>The CAD system (as I said before) should be able to maintain the linkage
>between these views, so that if you manipulate the object in one view it will
>be changed in all other views.
>Now I am willing to be educated (and impressed), but I don't think X-Cad can
>do this... (over to you)
>
Okay, now that that is understood, I'll look into it and let you know.
I'll phone them from the dealership I work for.  As it stands, I have
X-CAD 2-d and was going by what the ad said.  I'll find out for sure.

>
>Cameron Stephenson

--
Colin DeWolfe
dewolfe@ug.cs.dal.ca
dewolfe@iris1.ucus.dal.ca