Drawing arranging system

A drawing arranging system comprising:

• a first storage means for storing a coupling relationship between an aggregate of characteristic points representing a drawing, and for storing an aggregate of relative vectors connecting the characteristic points, wherein each of said relative vectors comprises a length and a direction;
• a second storage means for storing relational expressions as constraint conditions, wherein the relational expressions relate the length and the direction of each of said relative vectors;
• a constraint degree calculating means for calculating a degree of constraint of a plurality of parameters with respect to non-determined parameters corresponding to coordinate values of said characteristic points and said relative vectors;
• a determining parameter selecting means for selecting, and assigning a value to, one of the non-determined parameters having a maximum constraint degree calculated by said constraint degree calculating means;
• coordinate value determining means for determining coordinate values of said non-determined parameters, when the non-determined parameters selected by said determining parameter selecting means are the characteristic points, wherein the coordinate values are determined on the basis of (i) the coordinate values of characteristic points and lengths and directions of said relative vectors already determined and (ii) the coordinate value of the characteristic points corresponding to a different parameter selected by the parameter selecting means;
• relative vector determining means for determining coordinate values of said non-determined parameters, when the non-determined parameters selected by said determining parameter selecting means are the length and the direction of the relative vectors, wherein the coordinate values are determined on the basis of (i) the coordinate values of the characteristic points and said relative vectors already determined;
• and
• constraint condition analyzing means, responsive to said relative vector determining means, for solving the relational expressions, stored in said second storage means, and transpositioning the value of said non-determined parameters determined by said relative vector determined means, into said relational expressions for re-calculation to establish a simple form of expression.