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## Faces

| : Select faces. A left click on a face select the face. The selected faces are drawn in green, the non-selected faces in yellow. If the "Shift" key is pressed when clicing, the face is added to the selection list. : Select faces by rectangles. The users draws a rectangle on the drawing area. If the view mode is wire, all all the faces totaly inside this rectangle are selected. For the others view mode, only the visible faces totaly inside the rectangle are slected. : Material properties. Changes the material properties of the selected faces : Delete the selected Faces. Deletes the selected faces. : Split middle. For each selected faces, this tool adds a vertex in the middle of the face, then creates triangles from this vertex to each adjacent (that defines an edge) vertices of the face. This tool can produce strange result on concave faces. An example : The face becomes . : Add small faces. Adds a small face in middle of selected faces. The size of the small copy of the face is asked (in %). Then the small face is added, and the gap between the small and original face is filled with square faces. This tool can produce strange result on concave faces. An example : The face becomes . : Split faces along an edge. Not done yet. : Add polygons. look chapter Split a face in polygons : Flip. Flips the selected faces normals. So, if the selected faces are visible from one point of view, after using this tool, they will be visible from the opposite point of view. : Extrude. Extrudes the selected faces. The horizontal movement of the mouse (while the left button is pushed) defines the size of the extrusion. When the operation is finished, ppModeler returns to the select faces tool. An example : The faces become . : Scale. Scales the selected faces. The horizontal movement of the mouse (while the left button is pushed) defines the scale factor. All the vertices of the face are moved toward or from the computed barycenter of this vertices by a distance proportional to the distance from the vertex to the barycenter and the scale factor. By Pressing "Enter", he user can enter the scale factor numericaly. An example : The face becomes . : Rotate. Rotates the selected faces. The movement of the mouse (while the left button is pushed) defines the 2 angles of rotation. An example : The face becomes . : To convex. Transforms the selected faces in plane, convex faces. An example : The face becomes . : separate the selected faces. A new object is build with the selected faces. The selected faces are removed from the original object. : Select the vertices of the selected faces. Selects the vertices of the selected faces and switch to vertex edit mode. An example : The selected face is and the tool box is . When the tool is used, the selected vertices are and the tool box is .

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