devFoam - Features	Back to Wizard page.
Sum new Polyline(s) to the actual one

Sum new Polyline(s) to the actual one

You can get this dialog box pressing one of the 'Sum new Polyline(s) to the actual one' commands located in the menu of 'TwistRot Parts'

The following dialog will appear:

The basic idea here is: you can sum a new polyline to the actual one, to get a new more complex polyline. The sum will be performed adding the x value of the second polyline to the X value of the first one, for matching y values.
For example in the above picture we summed a wave shaped polyline to a simple vertical line, so the result is the waved polyline itself.

In the left side of the dialog you can see the controls to setup the operation.
In the right side the 2D preview of the result.

Now we will explain in deep every single part of the dialog.

Left side: the parameters and commands

Set the Height range where to sum the new Polyline:

Usually the new polyline will be applied to the full height of the original one, but you can specify here a different range.

Command Buttons:

• Sum a custom Polyline from file....: you can load an opened curve from a vectorial or raster file. When possible use a vectorial file, you can for example create this file using the 'Draw and Cut not Tapered parts' link of the Startup dialog.
• Go to draw the new Polyline to sum...: a Cad drawing app will appear, with the actual curve loaded. Draw/Modify the element, then just close this window. Saving the file is not required, but optional. You can use undo if you don't like to keep the modified drawing. The drawn polyline will be summed to the actual one (not replaced the actual one with the drawn polyline).

Wave shaped Polyline:

A common case is to add a wave shaped polyline, As this polyline is rather difficult to draw, we offer a fast and simple way to do that.
You can define here a wave shaped polyline, and sum it to the actual one:

• Number of Half waves: the number of half waves to create 
• Wave Height factor: the ration between the height and the amplitude of the wave. The bigger the value, the bigger the height of the wave. 
• Wave Shape: The shape of the wave, you can select among:
1. Sinusoidal
2. Rounded
3. Triangular
4. Squared
5. Multi-Faceted 
• Number of facets:  for Multi-Faced case, the number of facets 
• Force Waves to Positive values: you can specify to force the half waves to be only positive.
• Invert Waves: you can invert the waves 
• Sum the specified wave shaped Polyline: apply the specified wave, you can go back using the Undo button 

Other command Buttons:

• Undo/Redo   - Undo/Redo the last action
• OK   - Close the dialog and apply the new curve
• Cancel - Close the dialog without applying the new curve