ID 377318 - Using the Stretch Hair tool with a large brush causes the hair guides to stretch non-uniformly

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Problem summary

Using the Stretch Hair tool with a large brush causes the hair guides to stretch non-uniformly 


Customer reported version
modo.12.2v1


Customer reported platform
windows10


Steps to reproduce


1) Open Modo

2) Create a Sphere

3) Select some polygons on the Sphere, and create a new Material from the selection


4) In the Shading Tree, select the newly created Material, and Add Layer>Fur Material


5) With the polygons still selected, go to the Brush>Hair Tools panel, press Create Guides, and create the hair guides of a reasonable length


6) Deselect the polygons


7) Select the Stretch tool, and increase the Offset to 100% and increase the size of the brush


8) Paint on the Sphere to increase the guide length, some of the guides will not stretched uniformly, as shown below:




Workaround
Using a smaller brush size or smaller offset size seem to help reduce the issue, but may not correct it completely


Reproduced by support
This bug has been reproduced in:

Modo 12.2v1 - Windows 10 - CentOS 7 - MacOSX 10.13

Modo 12.1v2 - Windows 10

Modo 12.0v1 - Windows 10

Modo 11.2v3 - Windows 10 - CentOS 7 - MacOSX 10.13


Earliest version tested
Modo 11.2v3 - This issue appears to be in all versions of the product

Expected behaviour
For the hair guides to stretch uniformly, along the length of the hair


Actual behaviour
Parts of the guides move exponentially in random directions 


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