Autodesk 12812-051462-9011 User Guide 3 - Page 2735

Function Curve Function curves are editable splines that represent animation values in a line-graph format. They provide a valuable way of both visualizing and editing your animation tracks. Function curves appear in the Track View, and provide the best method of viewing and editing animation tracks. With the function curve display, you can actually see the characteristics of the animation as they change over time. The steepness of the curve indicates the velocity of an object in the scene. If the curve steepens, the object is accelerating. If the curve flattens out, the object is slowing. You can display key dots in function curves, as well as in the key editing displays. In function curves, the key dots appear as small, black squares. The two ways to turn on their display are to click the green icon beside the track label, or to click the function curve itself. There are two basic ways to edit function curves. You can either change the position of the key dots, thereby altering the curve, or you can edit the tangents and the values of the keys themselves. Fusing In NURBS curves and surfaces, fusing connects a point to a point or a CV to a CV. (You can't fuse a CV to a point, or vice versa.) This is one way to connect two curves or surfaces. It is also a way to change the shape of curves and surfaces. Fused points behave as a single point or CV until you unfuse them. Fusing points does not combine the two point objects or CV sub-objects. They are connected but remain distinct sub-objects that you can unfuse later. Fused CVs behave much like a single point, but the property of multiplicity for coincident CVs also applies. The fused CVs have proportionally more influence on the curve, which can become more sharply curved in the fused CVs' vicinity, or even angular if more than two CVs are fused together. FX File An FX file defines a DirectX 9 (DX9) shader. It is a text file created using the Higher-Level Shading Language (HLSL) standard. The DirectX 9 Shader material 7990 | Glossary