Moving keys of hair particles is very viewpoint depended #33647

New Issue

Tobias Oelgarte · 2012-12-21T16:45:03+01:00

Tobias Oelgarte commented

2012-12-21 16:45:03 +01:00

%%%Depending on how the view is positioned (looking from above or below, or from another angle) the strength with which i can comb or grab the keys of hair particles is very different. From some view angles i nearly can't move them at all, and from others the key moves very strongly.

I noticed that it is very depended on the origin of the emiter mesh. A sphere as an emiter with the origin at its center works fine. But if the sphere (the mesh in edit mode) is moved upwards (in z-direction) then the behavior changes. If i now look down (more or less top-view) then the key move much stronger as i drag them, if i look from below, then they are very unresponsive.

I appended an example file with one hair particle and a sphere like mesh moved in z-direction. The view is currently looking upwards, so grabbing the key of the particle has nearly no effect. If you rotate the view, so that you can drag the keys from above, will move the keys very wide in comparison to the mouse movement.

Ideally it should work like dragging vertices in edit-mode, but it doesn't. It is more or less the same issue as with moving vertices if the 3D-Manipulator is somewhere else, which can also make vertices hard to drag.%%%

%%%Depending on how the view is positioned (looking from above or below, or from another angle) the strength with which i can comb or grab the keys of hair particles is very different. From some view angles i nearly can't move them at all, and from others the key moves very strongly. I noticed that it is very depended on the origin of the emiter mesh. A sphere as an emiter with the origin at its center works fine. But if the sphere (the mesh in edit mode) is moved upwards (in z-direction) then the behavior changes. If i now look down (more or less top-view) then the key move much stronger as i drag them, if i look from below, then they are very unresponsive. I appended an example file with one hair particle and a sphere like mesh moved in z-direction. The view is currently looking upwards, so grabbing the key of the particle has nearly no effect. If you rotate the view, so that you can drag the keys from above, will move the keys very wide in comparison to the mouse movement. Ideally it should work like dragging vertices in edit-mode, but it doesn't. It is more or less the same issue as with moving vertices if the 3D-Manipulator is somewhere else, which can also make vertices hard to drag.%%%

Tobias Oelgarte commented

2012-12-21 16:45:03 +01:00

Changed status to: 'Open'

Ton Roosendaal commented

2012-12-21 17:43:40 +01:00

%%%Confirmed, checking old code...%%%

Ton Roosendaal commented

2012-12-21 18:49:34 +01:00

%%%Fix is in svn now.

Because you had the transform manipulator visible in the file, I noted the same effect for transform (using manipulator or Gkey).
That is fixed now too.

Thanks :)%%%

%%%Fix is in svn now. Because you had the transform manipulator visible in the file, I noted the same effect for transform (using manipulator or Gkey). That is fixed now too. Thanks :)%%%

Ton Roosendaal commented

2012-12-21 18:49:34 +01:00

Changed status from 'Open' to: 'Resolved'

Ton Roosendaal closed this issue

2012-12-21 18:49:34 +01:00

Tobias Oelgarte commented

2012-12-21 19:20:10 +01:00

%%%Thank you very much!

I as well noticed that the amount you can drag depends strongly on the 3D-manipulator position. It actually dragging the manipulator and copying it's offset onto the vertices/keys/etc.

I can understand why it is that way, but there are scenarios in which the control over the 3d manipulator isn't there. For example while editing shape keys on a posed figure mesh. The 3D manipulator is rightfully placed at the vertex location. But it is placed at the rest location (not posed), which is not the actual position/normal of the vertex i edit in the 3d view. Thats why the 3D manipulator is often very close or even behind the view, which gives the same effect. Could it be placed at the transformed vertex location and aligned to it's normal?%%%

%%%Thank you very much! I as well noticed that the amount you can drag depends strongly on the 3D-manipulator position. It actually dragging the manipulator and copying it's offset onto the vertices/keys/etc. I can understand why it is that way, but there are scenarios in which the control over the 3d manipulator isn't there. For example while editing shape keys on a posed figure mesh. The 3D manipulator is rightfully placed at the vertex location. But it is placed at the rest location (not posed), which is not the actual position/normal of the vertex i edit in the 3d view. Thats why the 3D manipulator is often very close or even behind the view, which gives the same effect. Could it be placed at the transformed vertex location and aligned to it's normal?%%%

Ton Roosendaal commented

2012-12-21 19:29:03 +01:00

%%%I guess I can do that :) will go on my own todo list though, that has 40+ items already :)

We'll keep working on solving usability issues, but don't flood me with tips yet, enough todo for a couple of weeks!%%%

%%%I guess I can do that :) will go on my own todo list though, that has 40+ items already :) We'll keep working on solving usability issues, but don't flood me with tips yet, enough todo for a couple of weeks!%%%

Tobias Oelgarte commented

2012-12-21 19:43:29 +01:00

%%%I won't flood you. The items on the todo list are also if not even more important. It was just a random thing that came to my mind as i noticed how the 3D manipulator affects the movement of things and what happens if it is placed not at the right location. ;-)%%%

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Moving keys of hair particles is very viewpoint depended #33647