Method and apparatus for controlling shadow geometry on computer displays
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United States of America Patent
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Dec 1, 1998
Grant Date -
N/A
app pub date -
Feb 12, 1996
filing date -
Feb 12, 1996
priority date (Note) -
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Abstract
A method and apparatus for controlling shadow geometry on a computer display in an interactive computer display system. The method and apparatus comprises: maintaining primary element information defining a primary element; generating shadow geometry information defining a shadow geometry, the shadow geometry information having a predetermined mathematical relationship with the primary element, the shadow geometry information being generated in response to user manipulation of the primary element; integrating the shadow geometry with the primary element to form a single graphical unit (called a 'par'); and selectively displaying the secondary element concurrently with the primary element.
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