The difference between parenting and also grouping is subtle. Both actions produce a hierarchy that lets you move grouped objects. In part respects, group is like parenting several objects to an object that contains no geometry (know together a null object, or null). However, you should note a few differences. When an object becomes a child of another object, it supplies its parent as its brand-new world space. That means it no much longer looks come the center of her scene to get its position information; instead, it looks to its parent. An item under a group still uses the scene"s world room (Figure 6.26). number 6.26. ~ above top, the cubes are grouped, and also pCube2 is 2 units over and also one unit up. When pCube2 is parented to pCube1 (bottom), the translate into values change because pCube2 is only one unit come the best of that parent. The position of the cube hasn"t changed, however its revolution values have.

*

The parent-child relationship is also used in some aspects of Maya to develop how objects are connected. This usability is especially important in skeleton (as discussed in thing 10). As soon as parented together, skeleton become connected in a special method that enables them to role like a actual skeleton (Figure 6.27).

You are watching: How to group objects in maya

number 6.27. The top team of joints is parental together, so the joints show up to be connected. The bottom collection of joints has been group to act similarly, but the joints lack the exact same connections.

*

Grouping can do just the opposite: the severs web links or the inheriting of details you might not want. Because that instance, if things is scaled, every its children are in a scaled human being space. This can develop odd distortion with rotations. By using groups, you have the right to establish more control over the qualities of your civilization space, consisting of pivot point, scale, and also rotation. Structure a lamp out of objects is a an excellent example to present this contrast.

To develop a lamp making use of parenting:

4.

6.

Select pCone1, and also rotate it. The entirety lamp moves, because the remainder of the pieces are kids of the base.

1.

Choose create > Polygon Primitives > Cone, and enter the settings shown in number 6.28. number 6.28. This cone will form the basic of the lamp.

*

2.

Create 2 poly cylinders, scale them to it is in long and also skinny, and position castle on top of each other over the cone.

3.

Duplicate the bottom cone, and also position the on peak of the cylinders prefer a shade (Figure 6.29). figure 6.29. A an easy lamp arrangement. It needs some framework to permit you to relocate it.

*

Choose window > Outliner. In the resulting see of her objects, you have the right to see the they have actually no group (Figure 6.30). number 6.30. The objects aren"t grouped.

*

5.

In the Outliner, use the middle mouse button to drag pCone2 ~ above pCylinder2, pCylinder2 onto pCylinder1, and also pCylinder1 onto pCone1, developing the structure displayed in figure 6.31. figure 6.31. Drag and drop each piece onto the following until the structure looks prefer this.

*

currently the lamp"s components are parented together so that each item is moved by those listed below it, favor a actual lamp.

7.

Select pCylinder1, and also rotate it. The lamp i do not care distorted (Figure 6.32) due to the fact that the rest of the lamp is a kid of the cone and inherits the cone"s range values. number 6.32. This undesirable distortion occurs because the objects inherit scale values from their parents.

*

You deserve to avoid distortion troubles by freezing the transformations and also setting new pivot clues on the object, or by utilizing grouping instead. Using groups provides you an extra level of regulate as well. To show the difference between the two, let"s opt for grouping.

To build a lamp using grouping:

2.

Select the shade and also top arm of the lamp, and group castle by pushing or choosing Edit > Group.

3.

Press

*
to gain into pivot point mode. You have the right to now access group1"s pivot point, i m sorry is in ~ the bend of the lamp.

Position the pivot allude of group2 at the base of the cylinder (Figure 6.35). figure 6.35. Drag the brand-new pivot suggest down for the base joint.

*

1.

Perform measures 14 the the previous task to develop the basic lamp with no hierarchy.

4.

Select the move tool, and also position the pivot point at the joint of the desk lamp (Figure 6.33). number 6.33. Drag the pivot allude down come the middle joint. This is the point at which the lamp will certainly bend.

*

5.

With group1 quiet selected,

*
+select the reduced arm that the lamp and also group the components by pushing or picking Edit > Group. This action creates a nested group consisting that group1 and also the lower cylinder (Figure 6.34). number 6.34. A grouped pecking order is nested in different ways than a parental hierarchy.
*

6.

7.

Select the revolve tool, and rotate group2. The entire top of the desk lamp pivots and moves v the group, and there is no distortion. You can now place your lamp together you desire (Figure 6.36). figure 6.36. As long as you select the team nodes, you can pose the lamp without distortion.

*

frozen Transformations when you"re parenting, it isn"t always desirable to have kids inherit details transformations from their parents. Because that example, an object may become skewed if it"s parental to things with range transformations. Alternatively, you"ll regularly want to create a method to conveniently return an object to its original position. Freeze transformations is a handy device that help in both this situations. Freeze transformations (available in the modify menu) resets the change values of an item to zero without moving the object. Think of the as developing a new origin because that the object. The many obvious an outcome is that you can conveniently "zero out" an item (return it to its initial position). Making use of Freeze Transformations likewise sets scale values come 1, for this reason it avoids distortion in parenting chains.

See more: Fix: Discord Push To Talk Not Working Pubg, What Button Is Push To Talk In Pubg

It"s a an excellent idea to carry out Freeze revolutions on an item once you"ve put it whereby you need it. Doing therefore simplifies her scene and makes performing plot on multiple objects easier. Animation controls with logical default positions are much easier to keep track of. As a result, animating through the thing is much easier, since you have the right to tell how much the object has moved loved one to its beginning location rather of feather at arbitrarily numbers.