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Hi there, I'd like to know if there is any way to extrude a mesh like this :
mesh {
triangle { <1,13.2146,-23.2146>, <3,14.286,-24.286>, <17,14.286,-24.286> }
triangle { <17,14.286,-24.286>, <19,13.2146,-23.2146>, <1,13.2146,-23.2146> }
triangle { <19,13.2146,-23.2146>, <17,14.286,-24.286>, <17,18.2146,-28.2146> }
triangle { <17,18.2146,-28.2146>, <19,19.2861,-29.2861>, <19,13.2146,-23.2146> }
triangle { <19,19.2861,-29.2861>, <17,18.2146,-28.2146>, <3,18.2146,-28.2146> }
triangle { <3,18.2146,-28.2146>, <1,19.2861,-29.2861>, <19,19.2861,-29.2861> }
triangle { <1,19.2861,-29.2861>, <3,18.2146,-28.2146>, <3,14.286,-24.286> }
triangle { <3,14.286,-24.286>, <1,13.2146,-23.2146>, <1,19.2861,-29.2861> }
triangle { <3,15.7146,-25.7146>, <17,15.7146,-25.7146>, <17,16.786,-26.786> }
triangle { <17,16.786,-26.786>, <3,16.786,-26.786>, <3,15.7146,-25.7146> }
triangle { <5,14.286,-24.286>, <7,14.286,-24.286>, <7,18.2146,-28.2146> }
triangle { <7,18.2146,-28.2146>, <5,18.2146,-28.2146>, <5,14.286,-24.286> }
triangle { <9,14.286,-24.286>, <11,14.286,-24.286>, <11,18.2146,-28.2146> }
triangle { <11,18.2146,-28.2146>, <9,18.2146,-28.2146>, <9,14.286,-24.286> }
triangle { <13,14.286,-24.286>, <15,14.286,-24.286>, <15,18.2146,-28.2146> }
triangle { <15,18.2146,-28.2146>, <13,18.2146,-28.2146>, <13,14.286,-24.286> }
}
I'd like to extrude it following the y axis.
I know I can do it using the "prism" fonction by keeping only the triangles
points without the y coordinate, but it's kinda boring to do it manually.
Maybe there is a solution to extrude every kind of 2D or 3D objects along an
axis !?
Thanks in advance for your reply.
Post a reply to this message
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> Hi there, I'd like to know if there is any way to extrude a mesh like this :
>
> mesh {
> triangle {<1,13.2146,-23.2146>,<3,14.286,-24.286>,<17,14.286,-24.286> }
> triangle {<17,14.286,-24.286>,<19,13.2146,-23.2146>,<1,13.2146,-23.2146> }
> triangle {<19,13.2146,-23.2146>,<17,14.286,-24.286>,<17,18.2146,-28.2146> }
> triangle {<17,18.2146,-28.2146>,<19,19.2861,-29.2861>,<19,13.2146,-23.2146> }
> triangle {<19,19.2861,-29.2861>,<17,18.2146,-28.2146>,<3,18.2146,-28.2146> }
> triangle {<3,18.2146,-28.2146>,<1,19.2861,-29.2861>,<19,19.2861,-29.2861> }
> triangle {<1,19.2861,-29.2861>,<3,18.2146,-28.2146>,<3,14.286,-24.286> }
> triangle {<3,14.286,-24.286>,<1,13.2146,-23.2146>,<1,19.2861,-29.2861> }
> triangle {<3,15.7146,-25.7146>,<17,15.7146,-25.7146>,<17,16.786,-26.786> }
> triangle {<17,16.786,-26.786>,<3,16.786,-26.786>,<3,15.7146,-25.7146> }
> triangle {<5,14.286,-24.286>,<7,14.286,-24.286>,<7,18.2146,-28.2146> }
> triangle {<7,18.2146,-28.2146>,<5,18.2146,-28.2146>,<5,14.286,-24.286> }
> triangle {<9,14.286,-24.286>,<11,14.286,-24.286>,<11,18.2146,-28.2146> }
> triangle {<11,18.2146,-28.2146>,<9,18.2146,-28.2146>,<9,14.286,-24.286> }
> triangle {<13,14.286,-24.286>,<15,14.286,-24.286>,<15,18.2146,-28.2146> }
> triangle {<15,18.2146,-28.2146>,<13,18.2146,-28.2146>,<13,14.286,-24.286> }
> }
>
> I'd like to extrude it following the y axis.
>
> I know I can do it using the "prism" fonction by keeping only the triangles
> points without the y coordinate, but it's kinda boring to do it manually.
>
> Maybe there is a solution to extrude every kind of 2D or 3D objects along an
> axis !?
>
>
> Thanks in advance for your reply.
>
>
There is no surefire way to do that.
You can:
scale the mesh by a very large value along the Y axis and take the
intersection with a box of the desired thickness.
intersection{
object{Your_mesh scale<1, 1e6,1>}
box{<1,1,-30><19,-1,-20>}
}
Extract the outermost points and use them to define a prism.
Use an external programm to create a pre-extruded prism.
Alain
Post a reply to this message
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Alain <aze### [at] qwerty org> wrote:
> > Hi there, I'd like to know if there is any way to extrude a mesh like this :
> >
> > mesh {
> > triangle {<1,13.2146,-23.2146>,<3,14.286,-24.286>,<17,14.286,-24.286> }
> > triangle {<17,14.286,-24.286>,<19,13.2146,-23.2146>,<1,13.2146,-23.2146> }
> > triangle {<19,13.2146,-23.2146>,<17,14.286,-24.286>,<17,18.2146,-28.2146> }
> > triangle {<17,18.2146,-28.2146>,<19,19.2861,-29.2861>,<19,13.2146,-23.2146> }
> > triangle {<19,19.2861,-29.2861>,<17,18.2146,-28.2146>,<3,18.2146,-28.2146> }
> > triangle {<3,18.2146,-28.2146>,<1,19.2861,-29.2861>,<19,19.2861,-29.2861> }
> > triangle {<1,19.2861,-29.2861>,<3,18.2146,-28.2146>,<3,14.286,-24.286> }
> > triangle {<3,14.286,-24.286>,<1,13.2146,-23.2146>,<1,19.2861,-29.2861> }
> > triangle {<3,15.7146,-25.7146>,<17,15.7146,-25.7146>,<17,16.786,-26.786> }
> > triangle {<17,16.786,-26.786>,<3,16.786,-26.786>,<3,15.7146,-25.7146> }
> > triangle {<5,14.286,-24.286>,<7,14.286,-24.286>,<7,18.2146,-28.2146> }
> > triangle {<7,18.2146,-28.2146>,<5,18.2146,-28.2146>,<5,14.286,-24.286> }
> > triangle {<9,14.286,-24.286>,<11,14.286,-24.286>,<11,18.2146,-28.2146> }
> > triangle {<11,18.2146,-28.2146>,<9,18.2146,-28.2146>,<9,14.286,-24.286> }
> > triangle {<13,14.286,-24.286>,<15,14.286,-24.286>,<15,18.2146,-28.2146> }
> > triangle {<15,18.2146,-28.2146>,<13,18.2146,-28.2146>,<13,14.286,-24.286> }
> > }
> >
> > I'd like to extrude it following the y axis.
> >
> > I know I can do it using the "prism" fonction by keeping only the triangles
> > points without the y coordinate, but it's kinda boring to do it manually.
> >
> > Maybe there is a solution to extrude every kind of 2D or 3D objects along an
> > axis !?
> >
> >
> > Thanks in advance for your reply.
> >
> >
>
> There is no surefire way to do that.
> You can:
> scale the mesh by a very large value along the Y axis and take the
> intersection with a box of the desired thickness.
> intersection{
> object{Your_mesh scale<1, 1e6,1>}
> box{<1,1,-30><19,-1,-20>}
> }
>
> Extract the outermost points and use them to define a prism.
>
> Use an external programm to create a pre-extruded prism.
>
>
>
>
> Alain
Thanks for your reply but I'm afraid these ways to do it won't be ok for me.
To extract the outermost points will request any kind of programm to do it, then
I can't and I don't want to use an external programm.
I've tried the first solution, I see what you meant by scaling it along the y
axis, but the example I gave is a inclined plane surface made of triangles, so
scaling it along y only creates another plane surface.
Let's say there is only one triangle in my mesh, like that :
mesh {
triangle {<0,0,0>, <1,0,1>, <1,1,0>}
}
How can I extrude it using only the 3 dimensions coordinates of the 3 points of
the triangle. Of course I would like something quick and easy to do because I
have to extrude more complex mesh (like the one on my first post)
Post a reply to this message
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> Alain<aze### [at] qwertyorg> wrote:
>>> Hi there, I'd like to know if there is any way to extrude a mesh like this :
>>>
>>> mesh {
>>> triangle {<1,13.2146,-23.2146>,<3,14.286,-24.286>,<17,14.286,-24.286> }
>>> triangle {<17,14.286,-24.286>,<19,13.2146,-23.2146>,<1,13.2146,-23.2146> }
>>> triangle {<19,13.2146,-23.2146>,<17,14.286,-24.286>,<17,18.2146,-28.2146> }
>>> triangle {<17,18.2146,-28.2146>,<19,19.2861,-29.2861>,<19,13.2146,-23.2146> }
>>> triangle {<19,19.2861,-29.2861>,<17,18.2146,-28.2146>,<3,18.2146,-28.2146> }
>>> triangle {<3,18.2146,-28.2146>,<1,19.2861,-29.2861>,<19,19.2861,-29.2861> }
>>> triangle {<1,19.2861,-29.2861>,<3,18.2146,-28.2146>,<3,14.286,-24.286> }
>>> triangle {<3,14.286,-24.286>,<1,13.2146,-23.2146>,<1,19.2861,-29.2861> }
>>> triangle {<3,15.7146,-25.7146>,<17,15.7146,-25.7146>,<17,16.786,-26.786> }
>>> triangle {<17,16.786,-26.786>,<3,16.786,-26.786>,<3,15.7146,-25.7146> }
>>> triangle {<5,14.286,-24.286>,<7,14.286,-24.286>,<7,18.2146,-28.2146> }
>>> triangle {<7,18.2146,-28.2146>,<5,18.2146,-28.2146>,<5,14.286,-24.286> }
>>> triangle {<9,14.286,-24.286>,<11,14.286,-24.286>,<11,18.2146,-28.2146> }
>>> triangle {<11,18.2146,-28.2146>,<9,18.2146,-28.2146>,<9,14.286,-24.286> }
>>> triangle {<13,14.286,-24.286>,<15,14.286,-24.286>,<15,18.2146,-28.2146> }
>>> triangle {<15,18.2146,-28.2146>,<13,18.2146,-28.2146>,<13,14.286,-24.286> }
>>> }
>>>
>>> I'd like to extrude it following the y axis.
>>>
>>> I know I can do it using the "prism" fonction by keeping only the triangles
>>> points without the y coordinate, but it's kinda boring to do it manually.
>>>
>>> Maybe there is a solution to extrude every kind of 2D or 3D objects along an
>>> axis !?
>>>
>>>
>>> Thanks in advance for your reply.
>>>
>>>
>>
>> There is no surefire way to do that.
>> You can:
>> scale the mesh by a very large value along the Y axis and take the
>> intersection with a box of the desired thickness.
>> intersection{
>> object{Your_mesh scale<1, 1e6,1>}
>> box{<1,1,-30><19,-1,-20>}
>> }
>>
>> Extract the outermost points and use them to define a prism.
>>
>> Use an external programm to create a pre-extruded prism.
>>
>>
>>
>>
>> Alain
>
> Thanks for your reply but I'm afraid these ways to do it won't be ok for me.
>
> To extract the outermost points will request any kind of programm to do it, then
> I can't and I don't want to use an external programm.
>
> I've tried the first solution, I see what you meant by scaling it along the y
> axis, but the example I gave is a inclined plane surface made of triangles, so
> scaling it along y only creates another plane surface.
>
> Let's say there is only one triangle in my mesh, like that :
>
> mesh {
> triangle {<0,0,0>,<1,0,1>,<1,1,0>}
> }
>
> How can I extrude it using only the 3 dimensions coordinates of the 3 points of
> the triangle. Of course I would like something quick and easy to do because I
> have to extrude more complex mesh (like the one on my first post)
>
>
>
>
>
Sory, but there is no easy solution.
You can make your mesh solid by adding an inside_vector, BUT, the
resulting solid mesh don't have any side. You can intersect it from a
box that is very slightly smaller than the mesh. It ONLY works IF the
mesh is square.
Whener you don't see the side of the box, there sill be no side. Any
opening will also be invisible.
If the mesh is some arbitrary non-square shape, you'll only get the top
and bottom faces.
Also, whenever you have an even number of coplanar triangles you get an
opening.
Another solution would be to have the mesh in a text file, read that
file in a loop and construct your prism definition from that.
Then, if you want the top and bottom to follow the vertical shape of the
mesh, you'll need to cut away the prism with the mesh itself using
intersection for the top and difference for the bottom. Here again, you
need a mesh made solid using inside_vector y.
Not realy easy, but you can automate the process, so you only need to
code it once.
Alain
Post a reply to this message
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On Thu, 11 Nov 2010 03:59:52 +0200, Alain <aze### [at] qwertyorg> wrote:
>> Alain<aze### [at] qwertyorg> wrote:
>>>> Hi there, I'd like to know if there is any way to extrude a mesh li
ke
>>>> this :
>>>>
>>>> mesh {
>>>> triangle
>>>> {<1,13.2146,-23.2146>,<3,14.286,-24.286>,<17,14.286,-24.286> }
>>>> triangle
>>>> {<17,14.286,-24.286>,<19,13.2146,-23.2146>,<1,13.2146,-23.2146> }
>>>> triangle
>>>> {<19,13.2146,-23.2146>,<17,14.286,-24.286>,<17,18.2146,-28.2146>
}
>>>> triangle
>>>> {<17,18.2146,-28.2146>,<19,19.2861,-29.2861>,<19,13.2146,-23.2146>
}
>>>> triangle
>>>> {<19,19.2861,-29.2861>,<17,18.2146,-28.2146>,<3,18.2146,-28.2146>
}
>>>> triangle
>>>> {<3,18.2146,-28.2146>,<1,19.2861,-29.2861>,<19,19.2861,-29.2861>
}
>>>> triangle
>>>> {<1,19.2861,-29.2861>,<3,18.2146,-28.2146>,<3,14.286,-24.286> }
>>>> triangle
>>>> {<3,14.286,-24.286>,<1,13.2146,-23.2146>,<1,19.2861,-29.2861> }
>>>> triangle
>>>> {<3,15.7146,-25.7146>,<17,15.7146,-25.7146>,<17,16.786,-26.786> }
>>>> triangle
>>>> {<17,16.786,-26.786>,<3,16.786,-26.786>,<3,15.7146,-25.7146> }
>>>> triangle
>>>> {<5,14.286,-24.286>,<7,14.286,-24.286>,<7,18.2146,-28.2146> }
>>>> triangle
>>>> {<7,18.2146,-28.2146>,<5,18.2146,-28.2146>,<5,14.286,-24.286> }
>>>> triangle
>>>> {<9,14.286,-24.286>,<11,14.286,-24.286>,<11,18.2146,-28.2146> }
>>>> triangle
>>>> {<11,18.2146,-28.2146>,<9,18.2146,-28.2146>,<9,14.286,-24.286> }
>>>> triangle
>>>> {<13,14.286,-24.286>,<15,14.286,-24.286>,<15,18.2146,-28.2146> }
>>>> triangle
>>>> {<15,18.2146,-28.2146>,<13,18.2146,-28.2146>,<13,14.286,-24.286>
}
>>>> }
>>>>
>>>> I'd like to extrude it following the y axis.
>>>>
>>>> I know I can do it using the "prism" fonction by keeping only the
>>>> triangles
>>>> points without the y coordinate, but it's kinda boring to do it
>>>> manually.
>>>>
>>>> Maybe there is a solution to extrude every kind of 2D or 3D objects
>>>> along an
>>>> axis !?
>>>>
>>>>
>>>> Thanks in advance for your reply.
>>>>
>>>>
>>>
>>> There is no surefire way to do that.
>>> You can:
>>> scale the mesh by a very large value along the Y axis and take the
>>> intersection with a box of the desired thickness.
>>> intersection{
>>> object{Your_mesh scale<1, 1e6,1>}
>>> box{<1,1,-30><19,-1,-20>}
>>> }
>>>
>>> Extract the outermost points and use them to define a prism.
>>>
>>> Use an external programm to create a pre-extruded prism.
>>>
>>>
>>>
>>>
>>> Alain
>>
>> Thanks for your reply but I'm afraid these ways to do it won't be ok
>> for me.
>>
>> To extract the outermost points will request any kind of programm to
do
>> it, then
>> I can't and I don't want to use an external programm.
>>
>> I've tried the first solution, I see what you meant by scaling it alo
ng
>> the y
>> axis, but the example I gave is a inclined plane surface made of
>> triangles, so
>> scaling it along y only creates another plane surface.
>>
>> Let's say there is only one triangle in my mesh, like that :
>>
>> mesh {
>> triangle {<0,0,0>,<1,0,1>,<1,1,0>}
>> }
>>
>> How can I extrude it using only the 3 dimensions coordinates of the 3
>> points of
>> the triangle. Of course I would like something quick and easy to do
>> because I
>> have to extrude more complex mesh (like the one on my first post)
>>
>>
>>
>>
>>
>
> Sory, but there is no easy solution.
>
> You can make your mesh solid by adding an inside_vector, BUT, the
> resulting solid mesh don't have any side. You can intersect it from a
> box that is very slightly smaller than the mesh. It ONLY works IF the
> mesh is square.
> Whener you don't see the side of the box, there sill be no side. Any
> opening will also be invisible.
>
> If the mesh is some arbitrary non-square shape, you'll only get the to
p
> and bottom faces.
>
> Also, whenever you have an even number of coplanar triangles you get a
n
> opening.
>
> Another solution would be to have the mesh in a text file, read that
> file in a loop and construct your prism definition from that.
>
> Then, if you want the top and bottom to follow the vertical shape of t
he
> mesh, you'll need to cut away the prism with the mesh itself using
> intersection for the top and difference for the bottom. Here again, yo
u
> need a mesh made solid using inside_vector y.
>
> Not realy easy, but you can automate the process, so you only need to
> code it once.
>
>
>
>
> Alain
I'm thinking something along the lines of saving the mesh as a separate
file and reading the file and writing a new file after replacing each
triangle with a group of triangles.
Let's say a triangle has corner co-ordinates T1, T2 and T3 and you want
to
extrude it in direction of vector V1
You then replace
triangle{T1,T2,T3}
with the following:
////////////////////////////////////////////////////////
triangle{T1,T2,T3}// original triangle
triangle{T1,T2,T1+V1} //side of T1 and T2
triangle{T1,T2+V1,T1+V1} //
triangle{T2,T2+V1,T3} // side of T2 and T3
triangle{T2+V1,T2,T3+V1} //
triangle{T1,T3+V1,T3} // side of T3 and T1
triangle{T1+V1,T3+V1,T3} //
triangle{T1+V1,T2+V1,T3+V1}// Original triangle fully displaced by vecto
r
V1
////////////////////////////////////////////////////////////////////////
//////
-Nekar Xenos-
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> On Thu, 11 Nov 2010 03:59:52 +0200, Alain <aze### [at] qwertyorg> wrote:
>
>>> Alain<aze### [at] qwertyorg> wrote:
>>>>> Hi there, I'd like to know if there is any way to extrude a mesh
>>>>> like this :
>>>>>
>>>>> mesh {
>>>>> triangle
>>>>> {<1,13.2146,-23.2146>,<3,14.286,-24.286>,<17,14.286,-24.286> }
>>>>> triangle
>>>>> {<17,14.286,-24.286>,<19,13.2146,-23.2146>,<1,13.2146,-23.2146> }
>>>>> triangle
>>>>> {<19,13.2146,-23.2146>,<17,14.286,-24.286>,<17,18.2146,-28.2146> }
>>>>> triangle
>>>>> {<17,18.2146,-28.2146>,<19,19.2861,-29.2861>,<19,13.2146,-23.2146> }
>>>>> triangle
>>>>> {<19,19.2861,-29.2861>,<17,18.2146,-28.2146>,<3,18.2146,-28.2146> }
>>>>> triangle
>>>>> {<3,18.2146,-28.2146>,<1,19.2861,-29.2861>,<19,19.2861,-29.2861> }
>>>>> triangle
>>>>> {<1,19.2861,-29.2861>,<3,18.2146,-28.2146>,<3,14.286,-24.286> }
>>>>> triangle
>>>>> {<3,14.286,-24.286>,<1,13.2146,-23.2146>,<1,19.2861,-29.2861> }
>>>>> triangle
>>>>> {<3,15.7146,-25.7146>,<17,15.7146,-25.7146>,<17,16.786,-26.786> }
>>>>> triangle
>>>>> {<17,16.786,-26.786>,<3,16.786,-26.786>,<3,15.7146,-25.7146> }
>>>>> triangle {<5,14.286,-24.286>,<7,14.286,-24.286>,<7,18.2146,-28.2146> }
>>>>> triangle
>>>>> {<7,18.2146,-28.2146>,<5,18.2146,-28.2146>,<5,14.286,-24.286> }
>>>>> triangle
>>>>> {<9,14.286,-24.286>,<11,14.286,-24.286>,<11,18.2146,-28.2146> }
>>>>> triangle
>>>>> {<11,18.2146,-28.2146>,<9,18.2146,-28.2146>,<9,14.286,-24.286> }
>>>>> triangle
>>>>> {<13,14.286,-24.286>,<15,14.286,-24.286>,<15,18.2146,-28.2146> }
>>>>> triangle
>>>>> {<15,18.2146,-28.2146>,<13,18.2146,-28.2146>,<13,14.286,-24.286> }
>>>>> }
>>>>>
>>>>> I'd like to extrude it following the y axis.
>>>>>
>>>>> I know I can do it using the "prism" fonction by keeping only the
>>>>> triangles
>>>>> points without the y coordinate, but it's kinda boring to do it
>>>>> manually.
>>>>>
>>>>> Maybe there is a solution to extrude every kind of 2D or 3D objects
>>>>> along an
>>>>> axis !?
>>>>>
>>>>>
>>>>> Thanks in advance for your reply.
>>>>>
>>>>>
>>>>
>>>> There is no surefire way to do that.
>>>> You can:
>>>> scale the mesh by a very large value along the Y axis and take the
>>>> intersection with a box of the desired thickness.
>>>> intersection{
>>>> object{Your_mesh scale<1, 1e6,1>}
>>>> box{<1,1,-30><19,-1,-20>}
>>>> }
>>>>
>>>> Extract the outermost points and use them to define a prism.
>>>>
>>>> Use an external programm to create a pre-extruded prism.
>>>>
>>>>
>>>>
>>>>
>>>> Alain
>>>
>>> Thanks for your reply but I'm afraid these ways to do it won't be ok
>>> for me.
>>>
>>> To extract the outermost points will request any kind of programm to
>>> do it, then
>>> I can't and I don't want to use an external programm.
>>>
>>> I've tried the first solution, I see what you meant by scaling it
>>> along the y
>>> axis, but the example I gave is a inclined plane surface made of
>>> triangles, so
>>> scaling it along y only creates another plane surface.
>>>
>>> Let's say there is only one triangle in my mesh, like that :
>>>
>>> mesh {
>>> triangle {<0,0,0>,<1,0,1>,<1,1,0>}
>>> }
>>>
>>> How can I extrude it using only the 3 dimensions coordinates of the 3
>>> points of
>>> the triangle. Of course I would like something quick and easy to do
>>> because I
>>> have to extrude more complex mesh (like the one on my first post)
>>>
>>>
>>>
>>>
>>>
>>
>> Sory, but there is no easy solution.
>>
>> You can make your mesh solid by adding an inside_vector, BUT, the
>> resulting solid mesh don't have any side. You can intersect it from a
>> box that is very slightly smaller than the mesh. It ONLY works IF the
>> mesh is square.
>> Whener you don't see the side of the box, there sill be no side. Any
>> opening will also be invisible.
>>
>> If the mesh is some arbitrary non-square shape, you'll only get the
>> top and bottom faces.
>>
>> Also, whenever you have an even number of coplanar triangles you get
>> an opening.
>>
>> Another solution would be to have the mesh in a text file, read that
>> file in a loop and construct your prism definition from that.
>>
>> Then, if you want the top and bottom to follow the vertical shape of
>> the mesh, you'll need to cut away the prism with the mesh itself using
>> intersection for the top and difference for the bottom. Here again,
>> you need a mesh made solid using inside_vector y.
>>
>> Not realy easy, but you can automate the process, so you only need to
>> code it once.
>>
>>
>>
>>
>> Alain
>
> I'm thinking something along the lines of saving the mesh as a separate
> file and reading the file and writing a new file after replacing each
> triangle with a group of triangles.
>
> Let's say a triangle has corner co-ordinates T1, T2 and T3 and you want
> to extrude it in direction of vector V1
>
> You then replace
> triangle{T1,T2,T3}
> with the following:
> ////////////////////////////////////////////////////////
>
> triangle{T1,T2,T3}// original triangle
>
> triangle{T1,T2,T1+V1} //side of T1 and T2
> triangle{T1,T2+V1,T1+V1} //
>
> triangle{T2,T2+V1,T3} // side of T2 and T3
> triangle{T2+V1,T2,T3+V1} //
>
> triangle{T1,T3+V1,T3} // side of T3 and T1
> triangle{T1+V1,T3+V1,T3} //
>
> triangle{T1+V1,T2+V1,T3+V1}// Original triangle fully displaced by
> vector V1
>
> //////////////////////////////////////////////////////////////////////////////
>
>
> -Nekar Xenos-
Good. That way, you ensure that you preserve the original shape for the
top and bottom.
Make it into a mesh:
mesh{triangle{T1,T2,T3}// original triangle
triangle{T1,T2,T1+V1} //side of T1 and T2
triangle{T1,T2+V1,T1+V1} //
triangle{T2,T2+V1,T3} // side of T2 and T3
triangle{T2+V1,T2,T3+V1} //
triangle{T1,T3+V1,T3} // side of T3 and T1
triangle{T1+V1,T3+V1,T3} //
triangle{T1+V1,T2+V1,T3+V1}// Original triangle fully displaced by vector V1
}
It's easier to apply a texture that way.
You should then put all meshes into an union.
Alain
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On Thu, 11 Nov 2010 18:16:38 +0200, Alain <aze### [at] qwertyorg> wrote:
>> On Thu, 11 Nov 2010 03:59:52 +0200, Alain <aze### [at] qwertyorg> wrote:
>>
>> I'm thinking something along the lines of saving the mesh as a separa
te
>> file and reading the file and writing a new file after replacing each
>> triangle with a group of triangles.
>>
>> Let's say a triangle has corner co-ordinates T1, T2 and T3 and you wa
nt
>> to extrude it in direction of vector V1
>>
>> You then replace
>> triangle{T1,T2,T3}
>> with the following:
>> ////////////////////////////////////////////////////////
>>
>> triangle{T1,T2,T3}// original triangle
>>
>> triangle{T1,T2,T1+V1} //side of T1 and T2
>> triangle{T1,T2+V1,T1+V1} //
>>
>> triangle{T2,T2+V1,T3} // side of T2 and T3
>> triangle{T2+V1,T2,T3+V1} //
>>
>> triangle{T1,T3+V1,T3} // side of T3 and T1
>> triangle{T1+V1,T3+V1,T3} //
>>
>> triangle{T1+V1,T2+V1,T3+V1}// Original triangle fully displaced by
>> vector V1
>>
>> /////////////////////////////////////////////////////////////////////
/////////
>>
>>
>> -Nekar Xenos-
>
> Good. That way, you ensure that you preserve the original shape for th
e
> top and bottom.
>
> Make it into a mesh:
> mesh{triangle{T1,T2,T3}// original triangle
> triangle{T1,T2,T1+V1} //side of T1 and T2
> triangle{T1,T2+V1,T1+V1} //
> triangle{T2,T2+V1,T3} // side of T2 and T3
> triangle{T2+V1,T2,T3+V1} //
> triangle{T1,T3+V1,T3} // side of T3 and T1
> triangle{T1+V1,T3+V1,T3} //
> triangle{T1+V1,T2+V1,T3+V1}// Original triangle fully displaced by
> vector V1
> }
>
> It's easier to apply a texture that way.
> You should then put all meshes into an union.
>
>
> Alain
I just thought of something else: If you make V1 the same as the normal
for that point you can get interesting results. For instance making a
something grow fatter =:o
-Nekar Xenos-
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> On Thu, 11 Nov 2010 18:16:38 +0200, Alain <aze### [at] qwertyorg> wrote:
>
>>> On Thu, 11 Nov 2010 03:59:52 +0200, Alain <aze### [at] qwertyorg> wrote:
>
>> Good. That way, you ensure that you preserve the original shape for
>> the top and bottom.
>>
>> Make it into a mesh:
>> mesh{triangle{T1,T2,T3}// original triangle
>> triangle{T1,T2,T1+V1} //side of T1 and T2
>> triangle{T1,T2+V1,T1+V1} //
>> triangle{T2,T2+V1,T3} // side of T2 and T3
>> triangle{T2+V1,T2,T3+V1} //
>> triangle{T1,T3+V1,T3} // side of T3 and T1
>> triangle{T1+V1,T3+V1,T3} //
>> triangle{T1+V1,T2+V1,T3+V1}// Original triangle fully displaced by
>> vector V1
>> }
>>
>> It's easier to apply a texture that way.
>> You should then put all meshes into an union.
>>
>>
>> Alain
>
> I just thought of something else: If you make V1 the same as the normal
> for that point you can get interesting results. For instance making a
> something grow fatter =:o
>
> -Nekar Xenos-
Worth experimenting :)
Alain
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