Patent ID: 7177784

Claim:
A mechanical model simulation device for simplifying the display and simulation of a plurality of linked movable parts, the device comprising: a part information storage unit storing three-dimensional shape and position information about each part and information about a movable unit of each part; and a user interface unit displaying the three-dimensional shape of each part and a model indicating the movable unit of each part based on contents stored in the information storage unit, and specifying models of a plurality of movable units by a pointing device, thereby specifying a driving unit and a subordinately moving unit linked with the driving unit, the user interface unit further displaying a constraint condition of each movable unit and a direction of propagation of a movement of a link, specifying a geometric constraint condition, displaying the geometric constraint condition, extracting a shape determined by the specified geometric constraint condition, and displaying the extracted shape with an emphasis to facilitate viewing by the user.