3D Sketching

In Furniture Factory’s freehand sketching environment, designers use and tablet to make freehand isometric sketches to create 3D models(right). We adopt the axis-aligned planes approach to building 3D models from 2D sketches. Our simple sketch interface recognizes three types of lines: horizontal, vertical, and diagonal. Following isometric conventions each type of line is assigned to one of the Cartesian coordinate axes: horizontal line to the Y-axis, vertical line to the Z-axis, and diagonal line to the X-axis. Left picture illustrates the relationship between 2D directions of lines and the 3D coordinate axes.