To give the appearance of contraint of the last joint, use bones with movie clips and connect the last bone to a movie clip that has its alpha property set to zero. In armatures with strings of connected bones, you cannot contrain the motion of the last joint in any branch of the armature. You can also limit the speed of motion of a bone to create the effect of weight in a bone. By default, bone rotation is enabled and x- and y-axis motion is disabled. However, they cannot move in ways that require the length of their parent bone to change unless you enable x- or y-axis motion. Bones can rotate around their parent joint and along the x- and y-axis. For example, you can constrain two bones of an arm so that the elbow cannot bend in the wrong direction.īy default, each IK bone is assigned a fixed length when the bone is created. To create more realistic motion of IK armatures, you can control the freedom of motion of specific bones. To remove a bone from a selected control point, Ctrl-click (Windows) or Option-click (Macintosh) a bone that is highlighted in yellow. To add other bones to the selected control point, Shift-click a bone. The connected bones are highlighted in yellow while the selected control point is highlighted in red. To highlight the bones connected to a control point, click the control point with the Bind tool. You can also Ctrl-drag (Windows) or Option-drag (Macintosh) to remove multiple control points from the selected bone.
To remove control points from the bone, Ctrl-click (Windows) or Option-click (Macintosh) a control point that is highlighted in yellow. You can also Shift-drag to select multiple control points to add to the selected bone. To add control points to a selected bone, Shift-click a control point that is not highlighted. Control points connected to more than one bone appear as triangles. Control points connected to only one bone appear as squares. The connected points are highlighted in yellow while the selected bone is highlighted in red. To highlight the control points connected to a bone, click the bone with the Bind tool.
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