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Re: IDLgrPoly[line|gon] and cv_coord [message #33485 is a reply to message #33483]

Wed, 08 January 2003 09:55

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

"David Fanning" <david@dfanning.com> wrote
> paul wisehart (wisehart@runbox.com) writes:
>
>> I can't find any info on the coordinate systems used in object
>> graphics in the manual either. Maybe someone know's where to look?
>
> You look in the mind of the programmer that created the object. :-)
>
> The thing about object graphics is that there *is* no
> coordinate system, except the one you arbitrarily set
> up with the view object.

I think you should be careful how you are phrasing this. Object graphics
uses a right-handed rectangular coordinate system. The units and view
volume may be arbitrary but you always have a point [0,0,0] and 3 mutually
perpendicular axes with regular intervals passing thru it which define
[x,y,z] values.

-Rick

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[Message index]

		Re: IDLgrPoly[line\|gon] and cv_coord By: David Fanning on Wed, 08 January 2003 10:37
		Re: IDLgrPoly[line\|gon] and cv_coord By: Rick Towler on Wed, 08 January 2003 09:55
		Re: IDLgrPoly[line\|gon] and cv_coord By: paul wisehart on Wed, 08 January 2003 05:58
		Re: IDLgrPoly[line\|gon] and cv_coord By: David Fanning on Wed, 08 January 2003 05:23
		Re: IDLgrPoly[line\|gon] and cv_coord By: Thomas Gutzler on Tue, 07 January 2003 23:16
		Re: IDLgrPoly[line\|gon] and cv_coord By: Rick Towler on Tue, 07 January 2003 15:15
		Re: IDLgrPoly[line\|gon] and cv_coord By: David Fanning on Tue, 07 January 2003 14:58
		Re: IDLgrPoly[line\|gon] and cv_coord By: Rick Towler on Wed, 08 January 2003 13:04

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		Re: IDLgrPoly[line\|gon] and cv_coord By: David Fanning on Wed, 08 January 2003 10:37
		Re: IDLgrPoly[line\|gon] and cv_coord By: Rick Towler on Wed, 08 January 2003 09:55
		Re: IDLgrPoly[line\|gon] and cv_coord By: paul wisehart on Wed, 08 January 2003 05:58
		Re: IDLgrPoly[line\|gon] and cv_coord By: David Fanning on Wed, 08 January 2003 05:23
		Re: IDLgrPoly[line\|gon] and cv_coord By: Thomas Gutzler on Tue, 07 January 2003 23:16
		Re: IDLgrPoly[line\|gon] and cv_coord By: Rick Towler on Tue, 07 January 2003 15:15
		Re: IDLgrPoly[line\|gon] and cv_coord By: David Fanning on Tue, 07 January 2003 14:58
		Re: IDLgrPoly[line\|gon] and cv_coord By: Rick Towler on Wed, 08 January 2003 13:04