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Set up:
To merge selected polygons: press
This merges any number of adjacent, selected polygons into a single polygon on the same PEP object.
To join selected PEPs into a single PEP object: press
This takes separate, whole PEP objects and merges them into one single PEP object. For example, suppose you have modeled four wheels and a car body. Select all elements, the car body and the wheels, then click the button to create a single PEP object.
Note: This function is enabled only if you have multiple PEP objects selected. You are usually not in the PEP editor to use this function.
To extract selected polygons into a new PEP object: press
This takes the currently selected polygons (it does not include single edges or points that are not parts of selected polygons) and cuts them out of the currently selected PEP object. Then it makes a brand new PEP object and puts those polygons in the new, separate object.
You would use this, for example, if you cut a door out of a house and wanted to separate it into its own object so you could animate the door opening and closing using the rotation in its Transform.
To merge colinear edges in a selection:
press
This merges all multiple, end-to-end edges (in the selection) into a single edge with two endpoints.
To combine selected points onto the master selection: press
This combines all selected points into a single point, which is defined by the master selection.
Cutting and splitting polygons often creates extra edges and points in the model. For example, suppose you want to create a house with a dormer as shown in the following image:
You've created the dormer in an inefficient way that will still work, but produces colinear edges:
You can solve this problem by merging colinear edges in the selection.
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