A method of generating a layout of one or more planar double gate transistors can include generating a single gate transistor layout at least in part from one or more double gate transistor circuits, logic diagrams, or any combination thereof, and generating the planar double gate transistor layout at least in part from the single gate transistor layout. The method is highly flexible regarding the generation and adjusting of gate shapes and gate contact shapes to ensure the proper connection of the gates to voltage or signal lines, and when such generation, adjusting, or any combination thereof is performed. In one embodiment, a data processing system can include a program that has code in the form of instructions to carry out the method.