利用者:Rking/Doc:2.6/Manual/3D interaction/Transformations/Basics/Rotate

Page status (reviewing guidelines) Partial page Text no link to Transform Control Proposed fixes: none

Rotate

Mode: Object and Edit modes

Hotkey: R

Menu: Object/Mesh/etc. → Transform → Rotate

Description

Pressing R will enter the “rotate” transformation mode where the selected object or data is rotated according to the mouse pointer’s location. This mode uses the angle from the pivot point to the mouse pointer as the angle for rotation, so moving the mouse further from the object/data will give more fine-grained precision (i.e. the mouse movement will affect the rotation less, for the same mouse distance moved).

Options

LMB

Confirm the rotation, and leave the object or data at its current rotation on the screen.

MMB

Constrain the rotation about the X, Y or Z axis.

RMB or Esc

Cancel the rotation, and return the object or data to its original rotation.

R (Trackball)

Pressing R while already rotating toggles the rotation mode between a single axis rotation (either aligned to the screen or around a certain axis) and a two axis, “trackball” rotation. In “Trackball” mode, the rotation of the object is controlled by both the X and Y location of the mouse pointer, similar to the trackball view rotation mode. This can be a quick way to rotate an object into place, without having to keep changing the view rotation while adjusting. However, it is more difficult to use than the simple rotation.

See the rest of the Manipulation in 3D space section for additional options available within the transformation modes.

TODO

Skewer+Twist (or Bone+Roll)

http://en.wikipedia.org/wiki/Quaternions_and_spatial_rotation#From_the_rotations_to_the_quaternions http://en.wikipedia.org/wiki/Axis-angle_representation http://www.genesis3d.com/~kdtop/Quaternions-UsingToRepresentRotation.htm