Dart volume from scan-converted polygon mesh.
X-29 volume from scan-converted polygon mesh.
Volume morph halfway between dart and X-29.
User interface showing elements used to establish correspondences between models. Points (not shown), segments, rectangles, and boxes are respectively drawn as pink spheres, green cylinders, narrow blue slabs, and yellow boxes. The x, y, and z axes of each element are shown only when the user clicks on an element in order to change its attributes; otherwise, they remain invisible to prevent cluttering the work area (see section 3.2).