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The 3rd ISPRS Workshop on Dynamic and Multi-Dimensional GIS & the 10th Annual Conference of CPGIS on Geoinformatics
Chen, Jun

ISPRS, Voi.34, Part 2W2, “Dynamic and Multi-Dimensional GIS”, Bangkok, May 23-25, 2001
key frame
Insert frame among key frame
Figure 7 movie of key frame
i»i 4 ¡<4>j * 4
i t I I
Figure 8 slope and speed of movement
After the attribute values of key frame is given, they will be
stored in a structure named curve node and will be controlled
by the node. These curves are defined by the attribute data of
the key frame, the speed of the animation then can be
adjusted by the tangent of a curve.
Usually, (Fig 8)the gradient of a cun/e indicated the speed
of an object. Steep curve indicates high speed, while flat for
slow. Consequently, horizontal curve indicates the object
During the mounting of ancient building, the order of
mounting of different components is vitally important and
restricted by their shapes and physical characteristics. Position
of each component is measured by in situ surveying. The
movement of components is strictly simulated according to the
sequence of manually mounting these components.
Pictures(Fig.9) is build-up process of timber components
4.2 the establishment of key-frame
Figure 9 movie of a series of dou-gong