3D View>Grab/Transform Operator on y-Achsis >> Grab value flipps to -1x10^9 #40893

New Issue

Leon Eckardt · 2014-06-30T18:09:06+02:00

Leon Eckardt commented

2014-06-30 18:09:06 +02:00

System Information
Win7 x64 / NVIDA GEFORCE GT 555M Cuda 1GB

Blender Version
Broken: 2.70a f93bc76(official), 2.71 9337574(official), 2.71 5588e45(bulidbot 30.06.2014)

Short description of error
Transform Operator limited on y-Achsis fipps to -1x10^9 at someting arund +100. I drag only the mouse upwards.
Appears only with some View Angles.

Exact steps for others to reproduce the error
Open the attached File untitled_bug_grub_y2.blend press G to grab the selected Vert and limit the transform on global Y-Achsis. Move the mouse upwards.
The Vert flipps to -1x10^9 when reaching a point arund +100.
To be sure that the right angle is set to the view, you can enter the camera.

Attached:
untitled_bug_grub_y2.blend Blend File with one Mesh with one selected vert

**System Information** Win7 x64 / NVIDA GEFORCE GT 555M Cuda 1GB **Blender Version** Broken: 2.70a f93bc76(official), 2.71 9337574(official), 2.71 5588e45(bulidbot 30.06.2014) **Short description of error** Transform Operator limited on y-Achsis fipps to -1x10^9 at someting arund +100. I drag only the mouse upwards. Appears only with some View Angles. **Exact steps for others to reproduce the error** Open the attached File [untitled_bug_grub_y2.blend](https://archive.blender.org/developer/F96127/untitled_bug_grub_y2.blend) press G to grab the selected Vert and limit the transform on global Y-Achsis. Move the mouse upwards. The Vert flipps to -1x10^9 when reaching a point arund +100. To be sure that the right angle is set to the view, you can enter the camera. Attached: [untitled_bug_grub_y2.blend](https://archive.blender.org/developer/F96127/untitled_bug_grub_y2.blend) Blend File with one Mesh with one selected vert

Leon Eckardt commented

2014-06-30 18:09:06 +02:00

Changed status to: 'Open'

Leon Eckardt commented

2014-06-30 18:09:06 +02:00

Added subscriber: @Leon95

Bastien Montagne commented

2014-06-30 19:48:15 +02:00

Added subscriber: @mont29

Sergey Sharybin commented

2014-08-18 15:47:55 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2014-08-18 15:47:55 +02:00

Sergey Sharybin self-assigned this 2014-08-18 15:47:55 +02:00

Sergey Sharybin commented

2014-08-18 15:47:55 +02:00

This is rather known limitation of the axis constaining -- in extreme cases (such as an axis going to the infinity) projection of the point on the axis doesn't work well because of floating point precision.

I've made so this report is listed there http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Tools#Transform

Unfortunately, this is not so easy to solve without some major refactor, we'll likely solve it together with loads of other floating point issues in the viewport as a rather huge project.

Thanks for the report, but it goes to our TODO list..

This is rather known limitation of the axis constaining -- in extreme cases (such as an axis going to the infinity) projection of the point on the axis doesn't work well because of floating point precision. I've made so this report is listed there http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Tools#Transform Unfortunately, this is not so easy to solve without some major refactor, we'll likely solve it together with loads of other floating point issues in the viewport as a rather huge project. Thanks for the report, but it goes to our TODO list..

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3D View>Grab/Transform Operator on y-Achsis >> Grab value flipps to -1x10^9 #40893