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Re: IDLgrPoly[line|gon] and cv_coord [message #33499 is a reply to message #33494]

Tue, 07 January 2003 23:16

Thomas Gutzler
Messages: 44
Registered: November 2002

Member

Hey,

David Fanning 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. That is to say, the viewplane
> rectangle, and the near and far clipping planes define
> the view volume, which *is* your coordinate system.
> The units of this coordinate system are completely
> arbitrary. You make them up.
>
> Of course, this is one of the huge advantages of object
> graphics: you really can't do it *wrong*. :^)

I used to scale every Object to have max 2 Units in each dimension and
translating it to have 0/0/0 in its center because I discovered that the
visible area is only [-1..1] in each dimension. I tried to enlarge it
but without any success. Did I miss something or is that the way to do
it correctly?

Tom

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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