| 摘要 |
A transformation region is displayed around a selection of knots defining one or more computer graphics variable curves. The transformation region includes transformation handles enabling the modification of the transformation region shape. The transformation region defines an envelope of the curves. Modifying the shape of the transformation region defines a new envelope of the curves. The input and/or output values of knots are scaled to match the modified envelope so that the computer graphics variable remains a function of its input variables. Associated tangent handles of the knots are scaled proportional to the knot value. The transformation region can include a retiming curve specifying a remapping of input variable values. Points on the retiming curve below this diagonal remap associated knots to lower input values. Point on the retiming curve above the diagonal remap associated knots to higher input values.
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