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Does anyone know how to extract the X,Y and Z values from a defined vector.
Specifically, I am using Chris Colefax's Spline Generator. It generates a
"spline_pos" vector of (X,Y,Z). Is there a way to extract the numerical
values of each? I hope this is clear.
Thanks,
Greg Sanders
BTW if you haven't checked out Chris's Include files page yet.. You don't
know what you're missing!
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On Thu, 11 Jun 1998 10:43:31 -0700, "Greg Sanders"
<gvi### [at] oracle renonvus> wrote:
>Does anyone know how to extract the X,Y and Z values from a defined vector.
>Specifically, I am using Chris Colefax's Spline Generator. It generates a
>"spline_pos" vector of (X,Y,Z). Is there a way to extract the numerical
>values of each? I hope this is clear.
Yep. Just use spline_pos.x, spline_pos.y, and spline_pos.z
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What?! You mean read the documentation?!
Is there a way to extract the numerical
>>values of each? I hope this is clear.
>
>Yep. Just use spline_pos.x, spline_pos.y, and spline_pos.z
>
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Greg Sanders <gvi### [at] oraclerenonvus> wrote:
: What?! You mean read the documentation?!
That's always a good idea.
Section 7.1.4.3 says:
You may use the dot operator to extract a single component from a vector.
Suppose the identifier Spot was previously defined as a vector. Then Spot.x is
a float value that is the first component of this x, y, z vector. Similarly
Spot.y and Spot.z reference the 2nd and 3rd components. If Spot was a two
component UV vector you could use Spot.u and Spot.v to extract the first and
second component. For a 4D vector use .x, .y, .z and .t to extract each float
component. The dot operator is also used in color expressions which are
covered later.
--
- Warp. -
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From: Michael Lundahl
Subject: Re: Extracting values from predefined vectors
Date: 15 Jun 1998 04:38:59
Message: <6m2mj3$96a$1@oz.aussie.org>
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In article <6lp4ld$pmr$1@oz.aussie.org>,
"Greg Sanders" <gvi### [at] oraclerenonvus> writes:
>Does anyone know how to extract the X,Y and Z values from a defined vector.
>Specifically, I am using Chris Colefax's Spline Generator. It generates a
>"spline_pos" vector of (X,Y,Z). Is there a way to extract the numerical
>values of each? I hope this is clear.
Well, there should have been, by using the dot-operator... To get the x-value,
you should have been able to type spline_pos.x according to the manual.
However, there is a bug in POV which causes this operator to malfunction
for .y, .z, .v and .t I hope POV 3.1 will have this bug fixed.
/Michael
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Michael Lundahl wrote:
>
> Well, there should have been, by using the dot-operator... To get the x-value,
> you should have been able to type spline_pos.x according to the manual.
> However, there is a bug in POV which causes this operator to malfunction
> for .y, .z, .v and .t I hope POV 3.1 will have this bug fixed.
There is no problem with the .y and .z operators as applied to 3-vectors.
The problem is with 2-vectors (.y and .v).
--
http://www.flash.net/~djconnel/
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Greg Sanders wrote:
>
> What?! You mean read the documentation?!
>
Folks who take the time to post thoughtful replies
to questions don't find this funny.
Yeah -- it's easier to fire off a quickie than
do a search of the excellent on-line help. But
it's pretty selfish, if you realize someone else
will probably need to do it instead to answer your
question well.
--
http://www.flash.net/~djconnel/
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