MathMod incorrect obj export

 
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gymajor



Joined: 12 Jan 2015
Posts: 3
Location: Budapest

PostPosted: Thu Jan 15, 2015 12:53 pm    Post subject: MathMod incorrect obj export Reply with quote

Hi to all,

A generated parametric surface in MathMod 2.0 was imported into several programs such as BLENDER and MESHLAB.
An error was reported.

"Identical vertex indices found in the same faces -- faces ignored"

I checked the corresponding .obj file.
Most of the faces had this problem.

regards

Gyula
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nextstep
Site Admin


Joined: 06 Jan 2007
Posts: 538

PostPosted: Fri Jan 16, 2015 12:07 am    Post subject: Reply with quote

Hi,
I can't reproduce with MathMod-2.2 and Meshlab/Blender.
Is it only your math model that you can't import or any one provided in MathMod ?
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Cheers,
Abderrahman
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gymajor



Joined: 12 Jan 2015
Posts: 3
Location: Budapest

PostPosted: Sun Jan 25, 2015 8:25 am    Post subject: obj export bug from mathmod Reply with quote

Hi,

It occurs with my own simple model. Please find below the .js file content
{
"MathModels": [
{
"Param3D": {
"Cnd": [
" "
],
"Component": [
"Palya1"
],
"Const": [
"R1=2.0",
"R2=3.0",
"alfa= 0.8"
],
"Fx": [
"u*sin(v)"
],
"Fy": [
"u*cos(v)"
],
"Fz": [
"max(0,(u-R1)*sin(alfa))"
],
"Name": [
"Palya1"
],
"Umax": [
"3"
],
"Umin": [
"1"
],
"Vmax": [
"2*pi"
],
"Vmin": [
"0"
]
}
}
]
}
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nextstep
Site Admin


Joined: 06 Jan 2007
Posts: 538

PostPosted: Sun Jan 25, 2015 2:42 pm    Post subject: Reply with quote

Hi,
Yes you're right and not only your model but all parametric surfaces...This bug affects all 2.x versions. I'll check it. Meanwhile, you can use the previous versions 1.0-RC6 (this version, however, doesn't support constants definitions) :
https://sourceforge.net/projects/mathmod/files/MathMod-1.0/Release%20Candidate/RC6/
_________________
Cheers,
Abderrahman
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gymajor



Joined: 12 Jan 2015
Posts: 3
Location: Budapest

PostPosted: Thu Jan 29, 2015 2:07 pm    Post subject: Reply with quote

Hi Abderrahman,

Thank you. MathMod 1.6 is exporting correctly.

regards

Gyula
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