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根据考古测量的数据生成真实感地形,实现地物的精确分布,而地物精确分布与调整主要通过对实体的拾取完成。使用射线法与包围盒的三维拾取技术获得实体在虚拟场景中的空间坐标,并通过几种坐标转换的方法将实体的空间坐标转换为考古场地的地面直角坐标。根据姜寨聚落遗址的考古测量结果,调整实体的平面直角坐标同实际位置的偏差,使得实体在虚拟场景中的位置更为合理。根据考古发掘资料设计实体属性的数据结构,使实体按属性的数据结构在场景中实现精确的分布,取得了很好的交互定位效果。
According to the archeological survey data to generate a realistic landscape, to achieve the exact distribution of features, and accurate distribution and adjustment of features mainly through the completion of the entity picked up. The three-dimensional picking technique of ray method and bounding box is used to obtain the spatial coordinate of the entity in the virtual scene. The coordinate of the entity is transformed into the rectangular coordinate of the archeological site through several coordinate transformation methods. According to archaeological survey results of Jiangzhai settlement ruins, the adjustment of the deviation of the plane rectangular coordinates of the entity from the actual position makes the position of the entity in the virtual scene more reasonable. According to the archeological excavation data, the data structure of the entity attribute is designed so that the entity can achieve accurate distribution in the scene according to the attribute data structure and achieve good interactive positioning effect.