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Maniphest T41902

viewvectors (returned by view3d_utils.region_2d_to_vector_3d) for persp/ortho views are pointing in opposite directions
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Description

System Information
platform: b'Linux'
renderer:'Mesa DRI Intel(R) Sandybridge Mobile '
vendor:'Intel Open Source Technology Center'

Blender Version
Broken: version 2.71 (sub 6), branch b'master', commit date b'2014-09-19' b'20:25', hash b'31da725', b'Debug'
Worked: never? (not sure)

Short description of error
viewvectors (returned by view3d_utils.region_2d_to_vector_3d) for persp/ortho views are pointing in opposite directions...
(wrong direction in case of ortho imo)
(plus returned vector is not normalized in case of perspective)

  • also attached a little patch that hopefully fixes this (not sure if this break existing scripts though...)

Exact steps for others to reproduce the error
please see attached blend (has lots more information, script and steps to reproduce)

Revisions and Commits

rB Blender
rB61baf6e8135d Fix T41902: Flipped persp/ortho region_2d_to_vector_3d

Event Timeline

Philipp Oeser (lichtwerk) created this task.Sep 21 2014, 10:10 PM
Philipp Oeser (lichtwerk) raised the priority of this task from to 90.
Philipp Oeser (lichtwerk) updated the task description. (Show Details)
Philipp Oeser (lichtwerk) added a project: Add-ons (BF-Blender).
Philipp Oeser (lichtwerk) edited a custom field.
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).
Philipp Oeser (lichtwerk) added a comment.Sep 21 2014, 10:14 PM

View3dUtilsBug.patch535 BDownload

View3dUtilsBug.blend411 KBDownload

Philipp Oeser (lichtwerk) added a project: BF Blender.Sep 21 2014, 10:17 PM
Campbell Barton (campbellbarton) changed the task status from Unknown Status to Resolved.Sep 22 2014, 3:14 AM
Campbell Barton (campbellbarton) claimed this task.

Also found perspective vector wasn't normalized.

Fixed rB61baf6e8135d11bc53cbfa45c75f910a99e57971

Campbell Barton (campbellbarton) added a commit: rB61baf6e8135d: Fix T41902: Flipped persp/ortho region_2d_to_vector_3d.Sep 22 2014, 3:15 AM
Philipp Oeser (lichtwerk) added a comment.Sep 22 2014, 8:02 AM

Yeah, was mentioning that "returned vector is not normalized in case of perspective"...
Thanx for the quick commit!