The Spline Overlap modifier detects self-overlapping splines and adjusts the displacement of the intersecting segments.
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A section of chainlink fencing created using a freehand spline with the Spline Overlap modifier applied (right).
Interface
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Overlap rollout
- Show Knots
- Displays knots on the spline.
- Thickness
- Sets the thickness of the spline when determining the offset value during the overlap calculation. In most cases, this is the same value used with the Renderable Spline modifier.
- Drape
- Defines the relative shape of the overlap. The higher the value, the sharper the slope.
- Use Soft Selection
- Scales the overlap amount according to the soft selection value. If there is no soft selection, this option is ignored.
- Use Normals (if Present)
- When a Freehand Spline is being modified, this option uses the normals as the 'up vector' in calculating the overlap displacement direction.
Procedure
To use the Spline Overlap modifier:
- Create a spline with overlapping segments. You can do this by drawing a Freehand spline, for example, or by attaching several editable splines together as a single object. Make sure that the sections you want on top of the overlap are drawn or placed last.
- For best results, first apply a Normalize Spline modifier to the spline to ensure that the knots are evenly distributed.
- Apply a Spline Overlap modifier to the spline.
- Set the Thickness and Drape options.
- Tune the result by adjusting the Normalize Spline modifier, if necessary. Increasing the number of segments may increase the overall overlap resolution, for example.