By allowing the user to control all of the parts that describe a region, ShapeMaker gives you complete control over surface contours. With experience you will be able to create almost any shape using modification regions. Landmarks A landmark is a named point on the limb shape which marks an anatomical point of reference, such as the end of the tibia. This link provides ShapeMaker with special position and orientation information for the region so that when a template is then applied to another model, each generic region is placed in the same position relative to the landmark that it was linked to on the original model. If the landmarks on the new surface are in different positions than on the original surface, then regions linked to them will also be in different positions.
Landmarks have either one point or two points.
A region linked to a one-point landmark is placed in the same position relative to the landmark and is the same relative size as on the original shape. A region linked to a two-point landmark will be scaled along the length of the landmark. For example, if a template is created with a region linked to 5 cm line landmark and is then applied to a new model with a 7 cm landmark, the region will be lengthened by 2 cm on the new model. Because of the effect that landmarks have on the size and position of regions, the names and the number of points of landmarks on a surface to which a template is applied should be consistent with landmarks on the surface from which the template was created. The total of all modifications to any particular surface can be saved as a template.