The previous stage in the scene you want to translate, rotate, scale, or skew. The Mask control determines which objects in the scene are affected.

An optional input where you can connect a 3D object to constrain to. When the Type of constraint is set to Look At, this becomes a look at input where the transformed 3D object is automatically rotated to point towards the look at input whenever it is moved. You can change the axis on which the object rotates, or change the Type of constraint on the Constrain tab.

This can be useful, for example, if you have a 2D matte painting mapped to a Card in your scene. The look at input ensures that the plane of the painting always faces the camera, regardless of the camera position, and maintains the illusion depicted by the painting.

Specifies the mask pattern to match the prim names to affect.

You can use standard glob-style wildcards, such as '*', '?', to create masks or use individual prim names separated by spaces. For example, /GeoCube 1 /GeoCard3 applies the effect to only those prims.

Default - Injected/All Roots - selects the default prim(s) for the node. The default will be the injected mask prim paths if there is an upstream node with this. Otherwise the default mask for this node type is evaluated.

All roots - select the top level Xform(s) in your scene.

Last modified - selects whatever the last node modified was.

All Cameras - selects all Cameras in your scene graph.

All Lights - select all lights in your scene graph.

All Meshes - selects all meshes in your scene graph.

Custom - sets a custom selection of prims that exist in your scene graph.

Tip:  You can also use the cog menu, the Viewer picker, or drag and drop paths from the Scene Graph to create masks.

Choose what a selection in the Viewer or pivot point is snapped to in the Viewer:

• Geo to Set your geometry to a vertex selection within the scene.

• Geo to Set your geometry to a vertex selection within the scene in a frame range.

• Geo to Snaps your geometry by using a custom script.

• Pivot Point to Set your pivot point to a vertex selection within the scene in a frame range.

• Pivot Point to Set your geometry to a vertex selection within the scene in a frame range.

• Pivot Point to Set your geometry to the selected prim’s bounding box within the scene. Click knob to select which part of the bounding box to snap to.

• Pivot Point to Snaps your pivot point by using a custom script.

Select to import or export a channel file:

• Import chan file - import a channel file and transform the input object according to the transformation data in the channel file. Channel files contain a set of Cartesian coordinates for every frame of animation in a given shot. You can create and export them using Nuke or 3D tracking software, such as 3D-Equalizer, Maya, or Boujou.

• Export chan file - export the translation parameters that you’ve applied to the input object as a channel file. This is a useful method of sharing setups between artists.

Sets the operation order for scale (S), rotation (R), and translation (T). The possible operation combinations are SRT, STR, RST, RTS, TSR, TRS.

Sets the order of rotation. The possible axial combinations are ZXY, XYZ, XZY, YXZ, YZX, ZXY, ZYX.

Translates the selection along the x, y, and z axes. You can also adjust translate values by clicking and dragging the axis in the 3D Viewer.

Rotates the selection around the x, y, and z axes. You can adjust rotate values by holding down Ctrl/Cmd and dragging in the 3D Viewer.

Scales the selection on the x, y, and z axes.

Scales the selection simultaneously on the x, y, and z axes.

Skews the selection on the x, y, and z axes.

Translates the pivot point and transform handles along the x, y, and z axes without affecting the objects in the scene. You can also translate the pivot point by holding down Ctrl/Cmd and dragging the axis in the 3D Viewer.

Rotates the pivot point and transform handles along the x, y, and z axes without affecting the objects in the scene. You can also rotate the pivot point by holding down Ctrl/Cmd and dragging the axis in the 3D Viewer.

Local Matrix

Enable this control to specify matrix values for the object you’re transforming as an alternative to setting transform, scale, skew and pivot values above.

The matrix displays values from the object’s transform, rotate, scale, skew, and pivot controls.

Check Specify Matrix and copy or drag-and-drop matrix values from another object to apply those values, for example, if you wanted to align objects in a scene.

Determines when transforms should be applied to the objects specified in the Mask control:

• Prepend - applies the transforms from this node before any other transforms applied to the object.

• Append - applies the transforms from this node after any other transforms applied to the object.

The type of constraint:

Look At - Allows your constrained prim to always face and look at the target prim you are constraining to.

Parent - Modifies the prim’s transformation as if the target was the parent hierarchically. Allows your constrained prim to match the translation, rotation and scale of the target prim and allows you to set whether you want that transformation to be absolute or relative to the constrained prims existing location in world space, using the maintain offset knob.

Transformation - Matches the location, rotation and scale of the prim to the those of the target. Acts similarly to the Parent constraint but is a quick way to constrain via translation or rotation.

Translation - Matches the location transformations of the prim to that of the target.

Rotation - Matches the rotation transformations of the prim to that of the target .

Scale - Matches the scale transformations of the prim to that of the target.

Determines whether the constraint occurs around the X axis.

Determines whether the constraint occurs around the Y axis.

Determines whether the constraint occurs around the Z axis.