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"Bald Eagle" <cre### [at] netscape net> wrote:
> =?UTF-8?Q?J=c3=b6rg_=22Yadgar=22_Bleimann?= <yaz### [at] gmxde> wrote:
>
> http://wiki.povray.org/content/Reference:Mesh2
>
> > But I have no uv_indices, just uv_vectors!
>
> My guess is that you may be missing a section of data.
> Perhaps POV-Ray creates uv-index data where it is missing, (<0, 0>?) and that
> doesn't jive with whatever it needs to do. Or it's just a bad/misleading
> error.
> ...
Bill,
I have a suspicion that Yadgar does not read my replies, so I'll reply to you
instead.
Yadgar's problem is likely, like Jerome Grimbert explained, the unnecessary (?)
texture indices in his face_indices block. (I believe that Jerome Grimbert meant
to write "uv_vectors" when he wrote "uv_indices".)
POV-Ray complains, rightfully but not very comprehensible, when it reaches the
index to the first texture; because there is no texture_list block before the
face_indices block (as shown on the documentation page Jerome Grimbert linked
to).
What I find interesting though, is that it IS possible to combine UV-mapping and
a texture list: One can place several UV-mappable textures in the texture list
and then refer to each of them in the face_indices block thereafter.
I suspcet that this may be useful if one has several image map tiles that are to
be UV-mapped to different regions of the mesh.
Here's a complete scene that renders without problems if one provides an image
for the UV-mapping:
// ===== 1 ======= 2 ======= 3 ======= 4 ======= 5 ======= 6 ======= 7 =======
#include "colors.inc"
global_settings { assumed_gamma 1.0 }
default {
texture {
finish {
diffuse 0
ambient color Black
emission color White
}
}
}
// ===== 1 ======= 2 ======= 3 ======= 4 ======= 5 ======= 6 ======= 7 =======
#declare Earth_Slice_n42e044 =
mesh2 {
vertex_vectors {
25
< 2884.8178, -40532.7525, 56082.6582>,
< -9171.5619, -40308.4150, 44746.1601>,
<-21188.6401, -40084.4363, 33366.7545>,
<-32877.9350, -40230.5532, 21652.1961>,
<-44580.6796, -40306.6256, 9952.5033>,
< 13057.8787, -23755.4346, 45548.1452>,
< 1330.1334, -23909.1988, 33947.0299>,
<-10630.4449, -23708.0951, 22585.0805>,
<-22695.4630, -23321.5223, 11326.5482>,
<-34370.6821, -23387.2495, -329.0233>,
< 23221.9340, -6962.3006, 35022.9578>,
< 11316.8721, -6836.8635, 23677.4411>,
< -399.8051, -6905.9531, 12137.8952>,
<-12333.4551, -6640.1561, 818.8397>,
<-24333.2326, -6238.3055, -10436.7932>,
< 33304.7484, 9943.2953, 24581.8979>,
< 21837.6885, 9539.8892, 12858.6481>,
< 9658.4610, 10127.7787, 1866.7320>,
< -1845.2730, 9879.2958, -9816.8170>,
<-13884.9949, 10384.4651, -20958.2292>,
< 43363.8318, 26887.7446, 14165.4121>,
< 31606.8161, 26914.8515, 2812.8338>,
< 19694.9660, 27199.3287, -8382.2095>,
< 9001.1538, 25928.0627, -20815.7556>,
< -2940.1603, 26357.8266, -31979.7411>
}
normal_vectors {
25
< 0.5096, -0.6575, -0.5550>,
< 0.5112, -0.6702, -0.5381>,
< 0.4969, -0.6771, -0.5429>,
< 0.5235, -0.6600, -0.5389>,
< 0.5386, -0.6507, -0.5352>,
< 0.5223, -0.6637, -0.5354>,
< 0.5175, -0.6623, -0.5418>,
< 0.5150, -0.6604, -0.5465>,
< 0.5212, -0.6557, -0.5463>,
< 0.5283, -0.6507, -0.5454>,
< 0.5265, -0.6504, -0.5475>,
< 0.5258, -0.6582, -0.5388>,
< 0.5125, -0.6571, -0.5527>,
< 0.5174, -0.6584, -0.5466>,
< 0.5010, -0.6580, -0.5621>,
< 0.5376, -0.6595, -0.5254>,
< 0.5256, -0.6511, -0.5475>,
< 0.5208, -0.6458, -0.5582>,
< 0.5231, -0.6730, -0.5229>,
< 0.4809, -0.6849, -0.5474>,
< 0.5475, -0.6387, -0.5406>,
< 0.5205, -0.6327, -0.5733>,
< 0.5518, -0.6599, -0.5099>,
< 0.5125, -0.6946, -0.5048>,
<-0.5136, -0.6801, 0.5232>
}
uv_vectors {
25
<0.000000, 0.000000>,
<0.250000, 0.000000>,
<0.500000, 0.000000>,
<0.750000, 0.000000>,
<1.000000, 0.000000>,
<0.000000, 0.250000>,
<0.250000, 0.250000>,
<0.500000, 0.250000>,
<0.750000, 0.250000>,
<1.000000, 0.250000>,
<0.000000, 0.500000>,
<0.250000, 0.500000>,
<0.500000, 0.500000>,
<0.750000, 0.500000>,
<1.000000, 0.500000>,
<0.000000, 0.750000>,
<0.250000, 0.750000>,
<0.500000, 0.750000>,
<0.750000, 0.750000>,
<1.000000, 0.750000>,
<0.000000, 1.000000>,
<0.250000, 1.000000>,
<0.500000, 1.000000>,
<0.750000, 1.000000>,
<1.000000, 1.000000>
}
face_indices {
32
< 0, 1, 5>,
< 1, 6, 5>,
< 1, 2, 6>,
< 2, 7, 6>,
< 2, 3, 7>,
< 3, 8, 7>,
< 3, 4, 8>,
< 4, 9, 8>,
< 5, 6, 10>,
< 6, 11, 10>,
< 6, 7, 11>,
< 7, 12, 11>,
< 7, 8, 12>,
< 8, 13, 12>,
< 8, 9, 13>,
< 9, 14, 13>,
<10, 11, 15>,
<11, 16, 15>,
<11, 12, 16>,
<12, 17, 16>,
<12, 13, 17>,
<13, 18, 17>,
<13, 14, 18>,
<14, 19, 18>,
<15, 16, 20>,
<16, 21, 20>,
<16, 17, 21>,
<17, 22, 21>,
<17, 18, 22>,
<18, 23, 22>,
<18, 19, 23>,
<19, 24, 23>
}
}
#declare pApproxLook = <-3295778.3537, 4308723.8277, 3353808.4183>;
object {
Earth_Slice_n42e044
texture {
uv_mapping
pigment {
image_map {
png "AnImage.png"
gamma srgb
map_type 0
interpolate 2
once
}
}
}
double_illuminate
translate pApproxLook
}
// ===== 1 ======= 2 ======= 3 ======= 4 ======= 5 ======= 6 ======= 7 =======
#declare pMin = min_extent(Earth_Slice_n42e044);
#declare pMax = max_extent(Earth_Slice_n42e044);
#declare pCtr = (pMin + pMax)/2;
camera {
location 10000*<0, 10, 8>
look_at <0, 0, 0>
translate pCtr + pApproxLook
}
background { color Gray30 }
// ===== 1 ======= 2 ======= 3 ======= 4 ======= 5 ======= 6 ======= 7 =======
--
Tor Olav
http://subcube.com
https://github.com/t-o-k
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