TY - GEN
T1 - CLIPPING OF BEZIER CURVES.
AU - Cheng, Fuhua
AU - Lin, Chi Cheng
PY - 1985
Y1 - 1985
N2 - Contrary to the traditional way of curve display, where a parametrically defined curve is approximated by a fine linear polygon first and then edges of this polygon are clipped and displayed even if most or all of the curve is outside the window, we clip the given Bezier curve against the clip window first and only those portions inside the window are then approximated by linear polygons and output to the graphics system for display. Hence no clipping is even required in the subsequent viewing transformation process. Two algorithms are proposed and test cases are also presented. Our algorithms require, at most, half of the execution time of the traditional way.
AB - Contrary to the traditional way of curve display, where a parametrically defined curve is approximated by a fine linear polygon first and then edges of this polygon are clipped and displayed even if most or all of the curve is outside the window, we clip the given Bezier curve against the clip window first and only those portions inside the window are then approximated by linear polygons and output to the graphics system for display. Hence no clipping is even required in the subsequent viewing transformation process. Two algorithms are proposed and test cases are also presented. Our algorithms require, at most, half of the execution time of the traditional way.
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U2 - 10.1145/320435.320462
DO - 10.1145/320435.320462
M3 - Conference contribution
AN - SCOPUS:0022277567
SN - 0897911709
SN - 9780897911702
T3 - Proceedings of the Annual Conference of the Association for Computing Machinery
SP - 74
EP - 84
BT - Proceedings of the Annual Conference of the Association for Computing Machinery
ER -