Defines the state of the shatter deformation. 0% is the start of the shatter effect (no shattering), 100% is the end (pieces shattered and lying on the ground). To change this value interactively, drag the orange handle in the viewport.
Defines the angle through which each polygon rotates during the entire shatter deformation.
Defines the relative size of each polygon at the end of the shatter deformation (when Strength is 100%). If the value is set to 1, the polygons will remain the same size throughout the deformation. If the value is set to 0, the polygons will disappear by the end of the shatter effect. If the value is 2, the polygons will double in size.
Defines the percentage by which the individual polygon speeds may vary from the perfect, uniform value.
This might be the best thing since sliced bread. A simple click on this button will adjust the size of the Deformer object to the Parent object to be deformed (i.e. to its bounding box). The object will be enclosed entirely and deformed as a whole. This means that the Deformer’s size must no longer be tediously adjusted manually (click here for additional information).
Furthermore, Deformer objects’ axes will be fitted to the axes of the nearest Parent object, i.e., you rotate the Deformer object interactively in the direction in which its effect should be exerted, click on the Fit to Parent button and the Deformer object will snap to the nearest axis (it will simultaneously assume this as its origin).
For some Deformer objects (e.g., Squash & Stretch), only the origin or other useful parameters will be fitted to the Parent object, depending on the function selected.