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lionheart / openradar-mirror

A mirror of radars pulled from http://openradar.me/.
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26489479: The boundingBox property for MDLVoxelArray contains nonsensical values. #14749

Open openradar-mirror opened 8 years ago

openradar-mirror commented 8 years ago

Description

Summary: The minBounds field of the boundingBox property of MDLVoxelArray holds nonsensical values.

Steps to Reproduce: Open the attached playground

Expected Results: The bounds of a 1x2x3 box should, after conversion to voxels, be roughly equal to the original bounding box expanded by about half the voxel dimension.

Actual Results: Original asset bounds: min:(-0.5, -1.0, -1.5) max:(0.5, 1.0, 1.5) voxelArray.boundingBox min:(-3.30828, -3.30828, -3.30828) max:(0.622759, 1.03655, 1.65724)

Notice the min values are all equal and are not related (in any obvious way) to the input geometry.

If the voxels are enumerated and a bounding box calculated the result is: Calculated bounding box = min:(-0.618621, -1.03241, -1.6531) max:(0.622759, 1.03655, 1.65724)

Regression: Occurs on iOS 9.x and OS X 10.11.x

Product Version: iOS 9.x Created: 2016-05-26T08:35:52.300420 Originated: 2016-05-26T01:35:00 Open Radar Link: http://www.openradar.me/26489479

openradar-mirror commented 8 years ago

Modified: 2016-05-26T08:35:52.300610