Hello, I am using Box macro for making box but it uses only two points.
I have eight points as
a<0, 0, 0>
b<1, 0, 0>
c<1, 1, 0>
d<0, 1, 0>
e<0, 1, 1>
f<0, 0, 1>
g<1, 0, 1>
h<1, 1, 1>

How can I make a box using all these eight points?


--
Gurwinder Singh Bains

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> Hello, I am using Box macro for making box but it uses only two points.
> I have eight points as
> a<0, 0, 0>
> b<1, 0, 0>
> c<1, 1, 0>
> d<0, 1, 0>
> e<0, 1, 1>
> f<0, 0, 1>
> g<1, 0, 1>
> h<1, 1, 1>
>
> How can I make a box using all these eight points?

You can't. POVRay deals only real objects



---
Kurtz le pirate
Compagnie de la Banquise

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Hash: SHA256

Le 08/05/2015 18:53, kurtz le pirate a écrit :
> Le 08/05/2015 18:34, bakom a écrit :
>> Hello, I am using Box macro for making box but it uses only two
>> points. I have eight points as a<0, 0, 0> b<1, 0, 0> c<1, 1, 0> 
>> d<0, 1, 0> e<0, 1, 1> f<0, 0, 1> g<1, 0, 1> h<1, 1, 1>
>> 
>> How can I make a box using all these eight points?
> 
> You can't. POVRay deals only real objects
> 

There is 8 corners to a box, povray only wants you to specify the two
in pair along any of the four great diagonal.

a,h is ok, as are (b,e), (c,f) and (d,g).

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On 08/05/15 17:34, bakom wrote:
> Hello, I am using Box macro for making box but it uses only two points.
> I have eight points as
> a<0, 0, 0>
> b<1, 0, 0>
> c<1, 1, 0>
> d<0, 1, 0>
> e<0, 1, 1>
> f<0, 0, 1>
> g<1, 0, 1>
> h<1, 1, 1>
> 
> How can I make a box using all these eight points?

I'm not sure if I'm missing something here, but surely you only ever
need two points. In your example, these would be <0, 0, 0> and <1, 1, 1>

John
-- 
Protect the Earth
It was not given to you by your parents
You hold it in trust for your children

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Hi,

maybe it's better to say, you only ever need

1) Two points, and

2) The side condition that these two points are opposite corners

But it's never reasonable that you define a box by 8 points, since 8 points
don't always form a box - even 3 points might be too much: 2 define the box, and
the third might be located elsewhere in space (if I'm tight ...).



Doctor John <j.g### [at] gmailcom> wrote:
> On 08/05/15 17:34, bakom wrote:
> > Hello, I am using Box macro for making box but it uses only two points.
> > I have eight points as
> > a<0, 0, 0>
> > b<1, 0, 0>
> > c<1, 1, 0>
> > d<0, 1, 0>
> > e<0, 1, 1>
> > f<0, 0, 1>
> > g<1, 0, 1>
> > h<1, 1, 1>
> >
> > How can I make a box using all these eight points?
>
> I'm not sure if I'm missing something here, but surely you only ever
> need two points. In your example, these would be <0, 0, 0> and <1, 1, 1>
>
> John
> --
> Protect the Earth
> It was not given to you by your parents
> You hold it in trust for your children

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On 09/05/15 17:54, Sereib wrote:
> Hi,
> 
> maybe it's better to say, you only ever need
> 
> 1) Two points, and
> 
> 2) The side condition that these two points are opposite corners
> 

Indeed. I didn't make my self clear enough - mea culpa

John
-- 
Protect the Earth
It was not given to you by your parents
You hold it in trust for your children

Post a reply to this message

> Hello, I am using Box macro for making box but it uses only two points.
> I have eight points as
> a<0, 0, 0>
> b<1, 0, 0>
> c<1, 1, 0>
> d<0, 1, 0>
> e<0, 1, 1>
> f<0, 0, 1>
> g<1, 0, 1>
> h<1, 1, 1>
>
> How can I make a box using all these eight points?
>
>
> --
> Gurwinder Singh Bains
>
>

By definition, a box have faces that are parallel two by two and are 
also perpendicular to the other 4 faces.
As, initialy, the box's faces are all parallel to the base planes, you 
only need two oposite corners.

If you realy need more than that, you are no longer dealing with a box 
but some variation of an hexaedron.
If, additionaly, those faces are not flat, you have a twisted hexaedron, 
or some other beast that may, or not, self intersect.




Alain

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"bakom" <gswithbains> wrote:
> Hello, I am using Box macro for making box but it uses only two points.
> I have eight points as
> a<0, 0, 0>
> b<1, 0, 0>
> c<1, 1, 0>
> d<0, 1, 0>
> e<0, 1, 1>
> f<0, 0, 1>
> g<1, 0, 1>
> h<1, 1, 1>
>
> How can I make a box using all these eight points?
>
>
> --
> Gurwinder Singh Bains

#declare Default_texture = pigment {rgb 0.8}


#declare a = <0, 0, 0>;
#declare b = <1, 0, 0>;
#declare c = <1, 1, 0>;
#declare d = <0, 1, 0>;
#declare e = <0, 1, 1>;
#declare f = <0, 0, 1>;
#declare g = <1, 0, 1>;
#declare h = <1, 1, 1>;

#declare Box = mesh{

triangle{a,b,c}
triangle{a,c,d}
triangle{a,d,f}
triangle{e,d,f}
triangle{c,d,e}
triangle{c,e,h}
triangle{a,b,g}
triangle{a,f,g}
triangle{b,c,g}
triangle{g,h,c}
triangle{e,f,g}
triangle{e,g,h}

texture{Default_texture}
}

Box

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"LanuHum" <Lan### [at] yandexru> wrote:
> "bakom" <gswithbains> wrote:
> > Hello, I am using Box macro for making box but it uses only two points.
> > I have eight points as
> > a<0, 0, 0>
> > b<1, 0, 0>
> > c<1, 1, 0>
> > d<0, 1, 0>
> > e<0, 1, 1>
> > f<0, 0, 1>
> > g<1, 0, 1>
> > h<1, 1, 1>
> >
> > How can I make a box using all these eight points?
> >
> >
> > --
> > Gurwinder Singh Bains
>
> #declare Default_texture = pigment {rgb 0.8}
>
>
> #declare a = <0, 0, 0>;
> #declare b = <1, 0, 0>;
> #declare c = <1, 1, 0>;
> #declare d = <0, 1, 0>;
> #declare e = <0, 1, 1>;
> #declare f = <0, 0, 1>;
> #declare g = <1, 0, 1>;
> #declare h = <1, 1, 1>;
>
> #declare Box = mesh{
>
> triangle{a,b,c}
> triangle{a,c,d}
> triangle{a,d,f}
> triangle{e,d,f}
> triangle{c,d,e}
> triangle{c,e,h}
> triangle{a,b,g}
> triangle{a,f,g}
> triangle{b,c,g}
> triangle{g,h,c}
> triangle{e,f,g}
> triangle{e,g,h}
>
> texture{Default_texture}
> }
>
> Box


Great, thats what I was trying but can get it because I was doing mistake by not
writing all the triangles into mesh.
Thanks :)

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