| 摘要 |
PROBLEM TO BE SOLVED: To provide a spatial drawing processing method capable of easily adopting a detail degree model, which is suitable when models are switched in LOD management of CAD and CG. SOLUTION: A space to be drawn is determined (S20). Information on the size of a unit solid such as an object included in the space is obtained (S21). The size distribution, therefore, unit solids are grouped and a model having a large detail degree is adopted even if a viewpoint distance becomes larger for a larger unit solid. A small unit solid is speedily switched to a model having a small detail degree as the viewpoint distance increases (S22).
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