作者: Ken Shoemake
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摘要: Arcball is an input technique for 3-D computer graphics, using a mouse to adjust the spatial orientation of object. In Arcball, human factors and mathematical fundamentals come together exceptionally well. provides consistency between free constrained rotations any direction as axis; consistent visual feedback; kinesthetic agreement motion object rotation; interpretation position. Attention detail facilitates tasks users implementors. Users say that general-purpose rotation controller easier use than its nearest rival, Virtual Sphere. It also more powerful, simpler implement.