Problem with Weights for Objects.


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asketo
New Member

Posts: 7

Problem with Weights for Objects. Aug 14, 2019 16:00:07 GMT -5

Quote

Post by asketo on Aug 14, 2019 16:00:07 GMT -5

Hi. Sorry for my English.

With wonderful tutorial by Necrodog I made some objects with rigs. And they are work.

and adding different weights between bones

with big objects I don't see problem

The problem begins if I make small object or resize it to small size

Resize to Y axis for better view

I think the problem in import script because then I watching in import and export model I see this

And in many objects I see what on each vertex with two or more weights I lose about 0.004-0.008 weight units

Import Weights Values               Export Weights Values                                                   Sum imp Sum exp Diffirence
Bone A     Bone B      Bone C      Bone D      Bone A      Bone B      Bone C      Bone D     Results for Two weights on vertex
0,833333 0,166667                     0,831373 0,164706                                                  1,000000 0,996079 0,003921
0,666667 0,333333                     0,662745 0,329412                                                  1,000000 0,992157 0,007843
0,500000 0,500000                     0,498039 0,498039                                                  1,000000 0,996078 0,003922
0,333333 0,666667                     0,333333 0,666667                                                  1,000000 1,000000 0,000000
0,166667 0,833333                     0,164706 0,831373                                                  1,000000 0,996079 0,003921

0,800000 0,200000                     0,800000 0,200000                                                 1,000000 1,000000 0,000000
0,600000 0,400000                     0,600000 0,400000                                                 1,000000 1,000000 0,000000
0,400000 0,600000                     0,400000 0,600000                                                 1,000000 1,000000 0,000000
0,200000 0,800000                     0,200000 0,800000                                                 1,000000 1,000000 0,000000

0,250000 0,750000                     0,749020 0,247059                                                1,000000 0,996079 0,003921
0,500000 0,500000                     0,498039 0,498039                                                1,000000 0,996078 0,003922
0,750000 0,250000                     0,247059  0,749020                                                1,000000 0,996079 0,003921

0,909091 0,090909                     0,905882 0,090196                                                1,000000 0,996078 0,003922
0,818182 0,181818                     0,815686 0,180392                                                1,000000 0,996078 0,003922
0,727273 0,272727                     0,725490 0,270588                                                1,000000 0,996078 0,003922
0,636364 0,363636                     0,635294 0,360784                                                1,000000 0,996078 0,003922
0,545455 0,454545                     0,545098 0,450980                                                1,000000 0,996078 0,003922
0,454545 0,545455                     0,450980 0,545098                                                1,000000 0,996078 0,003922
0,363636 0,636364                     0,360784 0,635294                                                1,000000 0,996078 0,003922
0,272727 0,727273                     0,270588 0,725490                                                1,000000 0,996078 0,003922
0,181818 0,818182                     0,180392 0,815686                                                1,000000 0,996078 0,003922
0,090909 0,909091                     0,090196 0,905882                                                1,000000 0,996078 0,003922
Bone A     Bone B    Bone C     Bone D     Bone A    Bone B     Bone C    Bone D         Results for Four weights on vertex
0,826446 0,082645 0,082645 0,008264 0,823529 0,082353 0,082353 0,007843         1,000000 0,996078 0,003922
0,743802 0,074380 0,165289 0,016529 0,741176 0,070588 0,164706 0,015686         1,000000 0,992156 0,007844
0,661157 0,066116 0,247934 0,024793 0,658824 0,062745 0,247059 0,023529         1,000000 0,992157 0,007843
0,578512 0,057851 0,330579 0,033058 0,576471 0,054902 0,329412 0,031373         1,000000 0,992158 0,007842
0,495868 0,049587 0,413223 0,041322 0,494118 0,047059 0,411765 0,039216         1,000000 0,992158 0,007842
0,413223 0,041322 0,495868 0,049587 0,411765 0,039216 0,494118 0,047059         1,000000 0,992158 0,007842
0,330579 0,033058 0,578512 0,057851 0,329412 0,031373 0,576471 0,054902         1,000000 0,992158 0,007842
0,247934 0,024793 0,661157 0,066116 0,247059 0,023529 0,658824 0,062745         1,000000 0,992157 0,007843
0,165289 0,016529 0,743802 0,074380 0,164706 0,015686 0,741176 0,070588         1,000000 0,992156 0,007844
0,082645 0,008264 0,826446 0,082645 0,082353 0,007843 0,823529 0,082353         1,000000 0,996078 0,003922
Bone A     Bone B     Bone C    Bone D      Bone A      Bone B      Bone C      Bone D Results for Three weights on vertex
0,750000 0,187500 0,062500                  0,749020 0,184314 0,058824                      1,000000 0,992158 0,007842
0,750000 0,125000 0,125000                  0,749020 0,121569 0,121569                      1,000000 0,992158 0,007842
0,750000 0,062500 0,187500                  0,749020 0,058824 0,184314                      1,000000 0,992158 0,007842
0,500000 0,375000 0,125000                  0,498039 0,372549 0,121569                      1,000000 0,992157 0,007843
0,500000 0,250000 0,250000                  0,498039 0,247059 0,247059                      1,000000 0,992157 0,007843
0,500000 0,125000 0,375000                  0,498039 0,121569 0,372549                      1,000000 0,992157 0,007843
0,250000 0,562500 0,187500                  0,247059 0,560784 0,184314                      1,000000 0,992157 0,007843
0,250000 0,375000 0,375000                  0,247059 0,372549 0,372549                      1,000000 0,992157 0,007843
0,250000 0,187500 0,562500                  0,247059 0,184314 0,560784                      1,000000 0,992157 0,007843

With two weights on vertex I tried edit values manually, sometimes well, sometimes the result was bad.

With more then two weights on vertex I don't know what to do. :cry

Couple notes:

If I bound more than 59 bones to one mesh, then the vertex tied to 60 or higher bones simply disappeared. If I bound more than 108 bones to one mesh, then the game would crash.

Some samples

squari
Member

Posts: 47

Problem with Weights for Objects. Aug 17, 2019 0:10:23 GMT -5

Quote

Post by squari on Aug 17, 2019 0:10:23 GMT -5

Hi, I don't know much about object animations, but in this thread fallingsim mentions that having too many bones can lead to distortion (in the context of CAS objects). Are you using a lot of bones on the distorted ones? 59 does seem kind of excessive.

asketo
New Member

Posts: 7

Problem with Weights for Objects. Aug 17, 2019 10:05:59 GMT -5

Quote

Post by asketo on Aug 17, 2019 10:05:59 GMT -5

Aug 17, 2019 0:10:23 GMT -5 squari said:

Hi, I don't know much about object animations, but in this thread fallingsim mentions that having too many bones can lead to distortion (in the context of CAS objects). Are you using a lot of bones on the distorted ones? 59 does seem kind of excessive.

1. Thanks for link.

2 About 59 bones (>odel LOD->Meshes(Edit items...)->BindPoseBones(Edit items...) or/and Bones(Edit items...))

Examples (For experiments use only one package per game for once)

2.0 If above 102 bones cause crash game

2.1 If 97 bones - 8xiter.package - cause graphical artifacts:

2.2 If 66 bones - 13xy-iter.package - vertex bound to 60-66 bones disappeared:

2.3 If 60 bones - 13xyz-iter.package and 13xyz2-iter.package - vertex bound to 60 bones disappeared:

2.4 If 59 bones final variant to simulate some types of liquids - asketo_props_tears_in_cube.package - just working - I think it's a limit of EA engine on one mesh for Sims 4.

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For testing I use TURBDRIVER 's mod. I didn't find more easier utility on this site to test object.

3. I partially solved the rounding problem. Example import 0.1 -> 0.098 in game and export file; replace with import 0.102 (-> 0.102). In General, it is clear that the import is rounding down for many values by about 0.001961 units, which sometimes generates artifacts for a small object. Probably in the script to import the object, this case is tied to some constant. Hard to have objects with complex topology.

Thanks again for help.

Last Edit: Aug 17, 2019 10:25:37 GMT -5 by asketo


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Problem with Weights for Objects.

Post by asketo on Aug 14, 2019 16:00:07 GMT -5

Post by squari on Aug 17, 2019 0:10:23 GMT -5

Post by asketo on Aug 17, 2019 10:05:59 GMT -5

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