Creating Coons Patches

Select the button from the Surface toolbar or the Coons Patch (Surface menu) command. The dialog box for the command is displayed.
Select the Linear or Bi-cubic Blend Type, as required. If Linear is selected, the display lines joining two curves are straight. If Bi-cubic is selected the display lines are bi-cubic curves. The bi-cubic blend curves are normal to the bounding entities.

This example shows the two blend types; the Bi-cubic is on the right in all views.

Type a name for the surface if necessary.
Select Display to set the surface display parameters. The Display parameters now appear.
Enter the required number of patches in the U and V directions into the U Patch and V Patch boxes respectively.
Enter the required number of display points in the U and V directions into the U Display and V Display boxes respectively.
Click OK to accept the parameters for the command.
Make entity digitises to select the four bounding elements in response to the prompts.
Perform a finish.

Click here to view a typical example.

Also see