PURPOSE: To execute the display at a high speed by reducing the time for a search processing to an object data structure, and reducing the processing time required for the display as its result.
CONSTITUTION: An object editing storage device 2 for holding a hierarchized object data structure for editing an object, and a display storage device 6 for holding a hierarchized object data structure for a display are provided separately. Moreover, an object data compression processing part 5 is provided between them, and when a user executes a modeling instruction and a display instruction, this device is constituted so that the modeling instruction is executed to the hierarchized object data structure for editing the object, and the display instruction can be executed to the hierarchized object data structure for the display in parallel therewith.
KASAI SATOSHI
MUSHA HIROKATSU
