Normalize Spline Modifier

The Normalize Spline modifier adds new control points in the spline at regular intervals. Use Normalize Spline to produce splines for motion paths that require constant velocity.

Select a spline object. > Modify panel > Modifier List > Normalize Spline
Default menu: Select a spline object. > Modifiers menu > Patch/Spline Editing > Normalize Spline
Alt menu: Select a spline object. > Modifiers menu > Spline > Normalize Spline

The spline on the left has been normalized.

Note: This feature cannot be animated.

Interface

Parameters rollout

Show Knots

Displays knots on the spline.

Normalize By group

Seg Length

Sets the length of the spline's segments in 3ds Max units. The positions of the original vertices are discarded, and vertices are set to regular intervals. Segment length determines how many control points are added. Shorter segments result in more control points, longer segments result in fewer. Default=20.0 units.

Knot Count

Sets an exact number of knots instead of a segment length.

Insert

Inserts a specified number of knots between the existing knots in the shape.

Weighted

Inserts knots based on the average length of the segment rather than evenly distributing them.

Max Knots

When enabled, adjusts the segment length if necessary to prevent very high segment counts.

Options group

For Each Spline

Specifies the number of knots to use for each spline rather than a total across all shapes.

Retain Knots Within

Attempts to keep existing knot locations falling a certain tolerance in 3ds Max units. This option works with both Seg Length and Knot Count normalization methods.

Retain Tangents

Keeps the tangents for retained knots.

Simple Interpolation

Uses knot percentage to interpolate instead of the actual curve length.

Make Segments Straight

Forces the curve type to straight.

Statistics group

Number of Shapes

Shows the total number of shapes being affected.

Number of Splines

Displays the total number of splines being affected.

Total Length

Shows the total length of the created spline.

Orig Knots

Shows the original number of knots in the spline.

New Knots

Show the number of knots after the normalize operation.