APPARATUS, METHOD, APPLICATION PROGRAM AND COMPUTER READABLE MEDIUM THEREOF CAPABLE OF PRE-STORING DATA FOR GENERATING SELF-SHADOW OF A 3D OBJECT

摘要

An apparatus, a method, an application program and a computer readable medium thereof for pre-storing data to make the self-shadow of a 3D(Dimensional) object are provided to make the 2D-texture and 3D texture to be stored previously, thereby reducing the real time calculation amount largely when producing the self shadow of the moving object. A spear tree producing module(701) includes plural spears and produces a spear tree corresponding to one object. A signal spear calculation module calculates the accessibility value and occlusion angle value of each spear in a space related to all vertexes of the object. The first texture producing module(713) produces one 2D texture on the basis of the accessibility value and occlusion angle. A multi-spear calculation module calculates the total occluded area value and the insertion angle of arbitrary two spears in a space related to all vertexes of the object. The second texture producing module(719) produces one 3D texture on the basis of the total occluded area value and occlusion angle. An update module updates the relative positions of spears on the basis of the operation of the object. A combining module(725) takes the proper value from the 2D and 3D textures and combines one shadow made of a self shadow of the object. An image producing module(727) displays the 3D image including the shadow.