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Hello!
I'm wondering if there's a way to supply variables\values to a union object to
alter the way it is rendered. I'm not sure if I've worded that correctly, so
consider the code below. I'm trying to rotate the top box on the second figure,
but leave the first figure as-is. Is something like this possible or would I
need completely separate declarations for each "pose".
Thanks for any help you can offer.
-nip
Sample code:
#include "colors.inc"
#declare Tilted = 0.0;
#declare Figure = union {
box {
<0, 0, 0>, <1, 1, 1>
pigment { Green }
}
box {
<0, 0, 0>, <1, 1, 1>
pigment { Blue }
#if (Tilted > 0)
rotate z*15
#end
translate y*1
}
}
object { Figure }
object {
#declare Tilted = 1; //this does not make the right blue box rotate
Figure
translate <2, 0, 0>
}
camera {
location <5, 1, -5>
look_at <0, 1, 3>
}
light_source {
<5, 1, -5>
color rgb <1, 1, 1>
}
Post a reply to this message
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From: Jim Holsenback
Subject: Re: object variables for rending similar objects differently
Date: 1 Nov 2010 07:45:46
Message: <4ccea86a$1@news.povray.org>
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On 11/01/2010 08:14 AM, nip wrote:
> Hello!
>
> I'm wondering if there's a way to supply variables\values to a union object to
> alter the way it is rendered. I'm not sure if I've worded that correctly, so
> consider the code below. I'm trying to rotate the top box on the second figure,
> but leave the first figure as-is. Is something like this possible or would I
> need completely separate declarations for each "pose".
>
> Thanks for any help you can offer.
> -nip
>
>
>
> Sample code:
>
> #include "colors.inc"
>
> #declare Tilted = 0.0;
>
> #declare Figure = union {
> box {
> <0, 0, 0>, <1, 1, 1>
> pigment { Green }
> }
>
> box {
> <0, 0, 0>, <1, 1, 1>
> pigment { Blue }
>
> #if (Tilted > 0)
> rotate z*15
> #end
>
> translate y*1
> }
> }
>
> object { Figure }
>
> object {
> #declare Tilted = 1; //this does not make the right blue box rotate
> Figure
> translate <2, 0, 0>
> }
>
>
> camera {
> location <5, 1, -5>
> look_at <0, 1, 3>
> }
>
>
> light_source {
> <5, 1, -5>
> color rgb <1, 1, 1>
> }
>
>
>
a macro is what you need:
http://wiki.povray.org/content/Documentation:Reference_Section_2.6#The_.23macro_Directive
you problem is a simple one so I'll get you started, give this a whirl:
#macro Figure (Tilted)
union {
box {
<0, 0, 0>, <1, 1, 1>
pigment { Green }
}
box {
<0, 0, 0>, <1, 1, 1>
pigment { Blue }
#if (Tilted > 0)
rotate z*15
#end
translate y*1
}
}
#end
object { Figure (0) }
object { Figure (1) translate <2,0,0> }
Post a reply to this message
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Jim Holsenback <jho### [at] povray org> wrote:
> On 11/01/2010 08:14 AM, nip wrote:
> > Hello!
> >
> > I'm wondering if there's a way to supply variables\values to a union object to
> > alter the way it is rendered. I'm not sure if I've worded that correctly, so
> > consider the code below. I'm trying to rotate the top box on the second figure,
> > but leave the first figure as-is. Is something like this possible or would I
> > need completely separate declarations for each "pose".
> >
> > Thanks for any help you can offer.
> > -nip
> >
> >
> >
> > Sample code:
> >
> > #include "colors.inc"
> >
> > #declare Tilted = 0.0;
> >
> > #declare Figure = union {
> > box {
> > <0, 0, 0>, <1, 1, 1>
> > pigment { Green }
> > }
> >
> > box {
> > <0, 0, 0>, <1, 1, 1>
> > pigment { Blue }
> >
> > #if (Tilted > 0)
> > rotate z*15
> > #end
> >
> > translate y*1
> > }
> > }
> >
> > object { Figure }
> >
> > object {
> > #declare Tilted = 1; //this does not make the right blue box rotate
> > Figure
> > translate <2, 0, 0>
> > }
> >
> >
> > camera {
> > location <5, 1, -5>
> > look_at <0, 1, 3>
> > }
> >
> >
> > light_source {
> > <5, 1, -5>
> > color rgb <1, 1, 1>
> > }
> >
> >
> >
>
> a macro is what you need:
>
http://wiki.povray.org/content/Documentation:Reference_Section_2.6#The_.23macro_Directive
>
> you problem is a simple one so I'll get you started, give this a whirl:
> #macro Figure (Tilted)
> union {
> box {
> <0, 0, 0>, <1, 1, 1>
> pigment { Green }
> }
>
> box {
> <0, 0, 0>, <1, 1, 1>
> pigment { Blue }
>
> #if (Tilted > 0)
> rotate z*15
> #end
>
> translate y*1
> }
> }
> #end
>
> object { Figure (0) }
> object { Figure (1) translate <2,0,0> }
Excellent! Macros look pretty powerful. Thanks
Post a reply to this message
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