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A code generation program, referred to as a parent program, for the creation of a child program for generating CAD script commands for automatically creating drawings in a CAD program. The parent program accepts descriptive information of the properties of various drawing entities and combines this

A code generation program, referred to as a parent program, for the creation of a child program for generating CAD script commands for automatically creating drawings in a CAD program. The parent program accepts descriptive information of the properties of various drawing entities and combines this information with computer statement templates to create functional computer statements, which calculates the values of the properties of the drawing entity. The parent program outputs these functional computer statements to the child program. The parent program also contains CAD script command templates and code to combine these templates with the calculated values of the properties of the drawing entity to create a functional CAD script command. The parent program also outputs the CAD script command templates and the CAD script combiner code to the child program.

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A code generation program, referred to as a parent program, for the creation of a child program for generating CAD script commands for automatically creating drawings in a CAD program. The parent program accepts descriptive information of the properties of various drawing entities and combines this

A code generation program, referred to as a parent program, for the creation of a child program for generating CAD script commands for automatically creating drawings in a CAD program. The parent program accepts descriptive information of the properties of various drawing entities and combines this information with computer statement templates to create functional computer statements, which calculates the values of the properties of the drawing entity. The parent program outputs these functional computer statements to the child program. The parent program also contains CAD script command templates and code to combine these templates with the calculated values of the properties of the drawing entity to create a functional CAD script command. The parent program also outputs the CAD script command templates and the CAD script combiner code to the child program. orded. 13. A method according to claim 1, including the steps of: (a) calculating the positions of stitch points such that the stitch points extend along straight lines of fill, each of which in order of stitching has a first edge point at one edge of the area, a series of intermediate points and a second edge point at another edge of the area, and such that the intermediate stitch points extend across the lines of fill to form straight lines of patterns made up of single stitch points or groups according to the characteristics of the stitch type; and (b) transforming the positions of stitch points such that the lines of fill and the lines of patterns become curved in dependence upon the stitch definition curve. 14. A method according to claim 13, including the steps of: (a) initially transforming the outline shape of the area to be filled using a transform that converts the shape made by two stitch definition curves which are joined at either end by straight lines, into a rectangle; (b) calculating the positions of the stitch points of the transformed outline shape; then, (c) transforming the positions of stitch points using the inverse transform which returns the rectangle back to the shape defined between the two stitch definition curves which are joined at either end by straight lines, and which also returns the transformed outline shape back to the outline shape. 15. A method according to claim 14, including the step of: initially converting the outline shape of the area into a series of straight line segments before transforming it. 16. A method according to claim 13, where an affine like transform is used. 17. A method according to claim 13, where post processing is employed after the step of transforming the positions of the stitch points, to adjust the relative positions of stitch points within groups. 18. A method according to claim 14, where geometric shapes which will define groups of stitch points are specified with the outline shape of the area to be filled before the initial transform so that the shapes defined by the groups of stitch groups of stitch points are returned unchanged after inverse transformation. 19. A computer aided embroidery design system for generating the positions of stitch points for use by automatic embroidery machines to fill shaped areas in embroidery designs, the system including: data input means to receive specifications for an area in the design to be filled with stitching, specifications for a stitch type of embroidery fill stitch to fill the area, and specifications for a stitch definition curve; computation means to calculate the positions of stitch points to fill the area, such that the stitch points extend along lines of fill, each of which in order of stitching has a first edge point at one edge of the area, a series of intermediate stitch points and a second edge point at another edge of the area, and such that the intermediate stitch points extend across the lines of fill to form lines of patterns made up of either individual stitch points or groups of stitch points according to the characteristics of the stitch type, and where the lines of fill and the lines of patterns are curved in dependence upon the stitch definition curve but not on the shape of the area to be filled; and memory means to record the positions of the stitch points which extend throughout the area. 20. A computer aided embroidery design system according to claim 19, where the lines of fill are single rows of stitch points. 21. A computer aided embroidery design system according to claim 19, where the lines of patterns are single rows of stitch points. 22. A computer aided embroidery design system according to claim 19, where the specified area is part of a complex shape and the calculating means also calculates the positions of stitch points to fill all the other parts of the complex shape, and the positions of connecting stitches between the parts; such that the positions of stitch