Differential D1927

fix T48167
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Authored by Philipp Oeser (lichtwerk) on Apr 17 2016, 11:52 PM.

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Summary

selecting random percentage would not reliably garuantee the precise percentage of selected elements
now randomize an index array instead and use the precise number of elements from this array

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Philipp Oeser (lichtwerk) updated this revision to Diff 6442.Apr 17 2016, 11:52 PM

Philipp Oeser (lichtwerk) retitled this revision from to fix T48167.

Philipp Oeser (lichtwerk) updated this object.

Philipp Oeser (lichtwerk) mentioned this in T48167: bpy.ops.mesh.select_random() not accurate.

This wont work correctly with hidden elements.

It could work like this...

create an array of pointers the total size of elements.
loop over all elements and add visible elements to the array.
shuffle the array (only taking into account the total number of elements added).
calculate the number of items to select based on the number of items added to the array multiplied by the selection percentage.
Loop over and select the first items in the array.

This revision now requires changes to proceed.Apr 18 2016, 12:56 AM