Joins two surfaces together into a single surface.
The Multiple Knots options are used to specify whether the multiple knots at the join point are kept or removed after the attach is done.
Use Keep to keep the multiple knots created at the join point as a result of the attach. This is the default.
Use Remove to remove the multiple knots at the join point. The shape of the geometry can be changed if required.
This option is available only if you select the blend method of attachment. In conjunction with the Insert Parameter value, Insert Knot lets you make the blend region match the original surface curvature more closely.
This option has significant effect only if the original surfaces are not aligned precisely and have lengthy distances between the last two spans on each original surface near the attachment area.
Insert Knot creates two additional spans near the attachment area. Each is within one span of the points being joined from the original surfaces. You can adjust the positioning of the extra spans with the Insert Parameter value.
This option adjusts the positioning of the spans added when you turn on Insert Knot. The closer the value is to 0 (without reaching 0), the closer the blend shape resembles the curvature of the original spans in the attachment area. This occurs because the added spans are inserted closer to the spans closest to the blend points. Valid values are from 0 to 1.
To adjust this option interactively, first create the blended surface with Insert Knot turned on. Next, select the blended surface, display the Channel Box, and select attachSurface in the INPUTS section. Try different values for Parameter until you see the desired surface curvature.
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