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nomail@nomail wrote:
> Tor Olav Kristensen <tor### [at] TOBEREMOVEDhotmail com> wrote:
>
>>nomail@nomail wrote:
>>
>>If the number of sampled points from each slice contour
>>is equal, then you can write a little macro that produces
>>triangles that connects each pair of successive slices.
>>
>>(All the triangles can be merged into a mesh.)
...
> Thanks Tor for your response.
> I saw your web-site. The photos were great, but I am still newbie, and your
> images are very complicated for me...
> Do you have a simple example??.
See below for an example.
Note that I have commented out some points in the second contour
in order to get the same amount of samples around each slice.
Better results can be achieved by using a mesh2{} mesh instead of
triangles.
The code can also be made more efficient (and optimal in other ways),
but I've tried to keep it simple.
Tor Olav
// ===== 1 ======= 2 ======= 3 ======= 4 ======= 5 ======= 6 ======= 7
#macro Slice(ContourA, ContourB, FromZ, ToZ)
#local Size = dimension_size(ContourA, 1);
#local Cnt = 0;
#while (Cnt < Size - 1)
#local p1 = ContourA[Cnt] + z*FromZ;
#local p2 = ContourB[Cnt] + z*ToZ;
#local p3 = ContourA[Cnt + 1] + z*FromZ;
#local p4 = ContourB[Cnt + 1] + z*ToZ;
triangle { p1, p2, p3 }
triangle { p2, p3, p4 }
#local Cnt = Cnt + 1;
#end // while
#end // macro Slice
// ===== 1 ======= 2 ======= 3 ======= 4 ======= 5 ======= 6 ======= 7
#declare Contour1 =
array[84] {
<346, 224, 0>,
<345, 224, 0>,
<345, 227, 0>,
<344, 227, 0>,
<344, 229, 0>,
<343, 229, 0>,
<343, 231, 0>,
<342, 231, 0>,
<342, 232, 0>,
<341, 232, 0>,
<341, 233, 0>,
<340, 233, 0>,
<340, 234, 0>,
<339, 234, 0>,
<339, 235, 0>,
<337, 235, 0>,
<337, 236, 0>,
<335, 236, 0>,
<335, 237, 0>,
<333, 237, 0>,
<333, 238, 0>,
<324, 238, 0>,
<324, 237, 0>,
<322, 237, 0>,
<322, 236, 0>,
<320, 236, 0>,
<320, 235, 0>,
<318, 235, 0>,
<318, 234, 0>,
<317, 234, 0>,
<317, 233, 0>,
<316, 233, 0>,
<316, 232, 0>,
<315, 232, 0>,
<315, 231, 0>,
<314, 231, 0>,
<314, 229, 0>,
<313, 229, 0>,
<313, 227, 0>,
<312, 227, 0>,
<312, 224, 0>,
<311, 224, 0>,
<311, 215, 0>,
<312, 215, 0>,
<312, 212, 0>,
<313, 212, 0>,
<313, 210, 0>,
<314, 210, 0>,
<314, 208, 0>,
<315, 208, 0>,
<315, 207, 0>,
<316, 207, 0>,
<316, 206, 0>,
<317, 206, 0>,
<317, 205, 0>,
<318, 205, 0>,
<318, 204, 0>,
<320, 204, 0>,
<320, 203, 0>,
<322, 203, 0>,
<322, 202, 0>,
<324, 202, 0>,
<324, 201, 0>,
<333, 201, 0>,
<333, 202, 0>,
<335, 202, 0>,
<335, 203, 0>,
<337, 203, 0>,
<337, 204, 0>,
<339, 204, 0>,
<339, 205, 0>,
<340, 205, 0>,
<340, 206, 0>,
<341, 206, 0>,
<341, 207, 0>,
<342, 207, 0>,
<342, 208, 0>,
<343, 208, 0>,
<343, 210, 0>,
<344, 210, 0>,
<344, 212, 0>,
<345, 212, 0>,
<345, 215, 0>,
<346, 215, 0>
}
#declare Contour2 =
array[84] {
<346, 224, 0>,
<345, 224, 0>,
<345, 227, 0>,
<344, 227, 0>,
<344, 229, 0>,
<343, 229, 0>,
<343, 231, 0>,
<342, 231, 0>,
<342, 232, 0>,
<341, 232, 0>,
<341, 233, 0>,
<340, 233, 0>,
<340, 234, 0>,
<339, 234, 0>,
<339, 235, 0>,
// <338, 235, 0>,
// <338, 236, 0>,
<337, 236, 0>,
<337, 237, 0>,
<335, 237, 0>,
<335, 238, 0>,
<332, 238, 0>,
<332, 239, 0>,
<324, 239, 0>,
<324, 238, 0>,
<321, 238, 0>,
<321, 237, 0>,
<319, 237, 0>,
<319, 236, 0>,
<318, 236, 0>,
<318, 235, 0>,
<317, 235, 0>,
<317, 234, 0>,
<316, 234, 0>,
<316, 233, 0>,
<315, 233, 0>,
<315, 232, 0>,
<314, 232, 0>,
<314, 231, 0>,
<313, 231, 0>,
<313, 229, 0>,
// <312, 229, 0>,
<312, 227, 0>,
// <311, 227, 0>,
<311, 224, 0>,
// <310, 224, 0>,
<310, 214, 0>,
<311, 214, 0>,
<311, 211, 0>,
// <312, 211, 0>,
<312, 209, 0>,
<313, 209, 0>,
<313, 207, 0>,
<314, 207, 0>,
<314, 206, 0>,
<315, 206, 0>,
<315, 205, 0>,
<316, 205, 0>,
<316, 204, 0>,
<317, 204, 0>,
<317, 203, 0>,
<318, 203, 0>,
<318, 202, 0>,
<319, 202, 0>,
<319, 201, 0>,
<321, 201, 0>,
<321, 200, 0>,
<324, 200, 0>,
<324, 199, 0>,
<332, 199, 0>,
<332, 200, 0>,
<335, 200, 0>,
<335, 201, 0>,
<337, 201, 0>,
<337, 202, 0>,
// <338, 202, 0>,
// <338, 203, 0>,
<339, 203, 0>,
<339, 204, 0>,
<340, 204, 0>,
<340, 205, 0>,
<341, 205, 0>,
<341, 206, 0>,
<342, 206, 0>,
<342, 207, 0>,
<343, 207, 0>,
<343, 209, 0>,
<344, 209, 0>,
<344, 211, 0>,
<345, 211, 0>,
<345, 214, 0>,
<346, 214, 0>
}
union {
Slice(Contour1, Contour2, -10, 0)
pigment { color rgb <1, 0, 0> }
}
/*
union {
Slice(Contour1, Contour2, 0, 10)
pigment { color rgb <1, 0, 0> }
}
union {
Slice(Contour1, Contour2, 10, 20)
pigment { color rgb <1, 0, 0> }
}
*/
// ===== 1 ======= 2 ======= 3 ======= 4 ======= 5 ======= 6 ======= 7
#declare pCenter = <311 + (346 - 311)/2, 199 + (239 - 199)/2, 0>;
camera {
location <5, 4, -10>*10
look_at <0, 0, 0>
translate pCenter
}
background { color rgb <1, 1, 1>*0.4 }
light_source {
<8, 10, 10>*100
color rgb <1, 1, 1>
}
// ===== 1 ======= 2 ======= 3 ======= 4 ======= 5 ======= 6 ======= 7
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