Furniture Factory has four components that share a data structure: Sketch Interface, Geometry Analyzer, 3-D Representation, and Joint Creator. Figure 3 shows the information flow among these components After a designer sketches the isometric view of furniture in the Sketch Interface, Geometry Analyzer analyzes the sketch and computes faces, edges and 3-D coordinates. These computed faces, edges, and their 3-D coordinates are stored in the data structure. 3-D Representation creates a 3-D model using information extracted from the designer’s isometric sketch and displays it. The Geometry Analyzer also decomposes the 3-D model into 2D geometries and analyzes the connection conditions
