| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To efficiently display a curve and generate curve data showing the curve by using a computer. <P>SOLUTION: Every time a switch is switched from its OFF state to its ON state, coordinates pm specified with a mouse are stored in a memory as (n)th reference point data Pn and first and second handle point data Pn' and Pn" (step 208) while an end point specification variable n is increased by a value '1' (step 204). At this time, while the switch is held ON, only (n)th 1st handle point data stored newly in the memory according to the input from the mouse is updated (step 228), and a Bezier curve having (n-1)th reference point data Pn-1, second handle point data Pn-1", and (n)th 1st handle point data Pn', and reference point data Pn as control points in this order is displayed on a display (step 232). <P>COPYRIGHT: (C)2003,JPO</p> |
