• Tool >> Polygon Morphing command enables you to transform a polygonal model to another one and to view and save interim morphs on the way. RapidForm employs landmark based volume morphing, so you have to indicate some landmarks on each model. This operation supports multiple window system for easy landmark selection.
• Effective Intensity : As Effective Intensity gets smaller, smaller area around the Landmark points is affected by morphing.
• Maximum Effective Radius : As Maximum Effective Radius Effective Intensity increase, a Landmark point affects larger area of the shell and the shell tends to change globally. 
• Global Transform before Morphing : If you turn on Global Transform before Morphing option, RapidForm tries to rotate and scale the template shell referring to the reference shell before the Morphing.
• Show selected Faces : This option becomes active only if there are selected faces.
• Move Ref. Points of Template Finally : This option is for deciding whether to move the reference point to the morphed shell when user click Close button.
• Add Shell : Create and add a new shell using the morphed shape currently displayed on the screen.
• Polygon Template : This option becomes active only when the Interpolation Ratio equals 1.

Execute Tool >> Polygon Morphing command as follows:

1. Select Tool >> Polygon Morphing from the menu or click the corresponding icon from the polygon Tool2 toolbar.

2. Select a template shell and a reference shell, then Polygon Morphing Option dialog shows as follows.

3. If there are no reference points to be used as LandMarks, user should indicate all the Landmarks by creating reference points at key points on both shells. And each corresponding reference points should have same name. 

4. Type in Landmark Name in Landmark Name column. A Landmark should have the same name as the corresponding pair of reference points.  If there is predefined text file which has Landmark Name list, click Load to load it. And user can save a Landmark Name list into a text file by clicking Save.

5. Click Scan Ref. Points button, RapidForm scans all the Reference points' ID corresponding to each Landmark of template shell and reference shell, respectively.

6. Interpolation Ratio means how much the template shell go closely to reference one, which can be changed. If you need to create new shells with interim morph, click Add Shell button. 

7. If the result is successful, press Close button.

Landmarks on the template and reference model	Generating interim morphs using landmark based volume morphing

An error message of "Template shell has no vertices of faces" appears when there is no face on the template shell.