When the user touches the translation, scaling, or rotation
button on the display, a virtual 3D model with proxy colors
is drawn. The color located at the reference position is
obtained, and the model part with the matching proxy color
is identified as the one to be selected. This color-matching
phase is extremely quick, is identified as the one to be selected. This color-matching
phase is extremely quick, and therefore does not impede the
user.and therefore does not impede the
user.