June 2006
Intermediate to advanced
1344 pages
42h 52m
English
book
Visual Basic 2005 for Programmers: Deitel Developer Series, Second Edition
by Paul J. Deitel - Deitel & Associates, Inc., Harvey M. Deitel - Deitel & Associates, Inc.
Content preview from Visual Basic 2005 for Programmers: Deitel Developer Series, Second Edition
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17.7. Drawing Arcs
Arcs are portions of ellipses and are measured in degrees, beginning at a starting angle and continuing for a specified number of degrees called the arc angle. An arc is said to sweep (traverse) its arc angle, beginning from its starting angle. Arcs that sweep in a clockwise direction are measured in positive degrees, whereas arcs that sweep in a counterclockwise direction are measured in negative degrees. Figure 17.16 depicts two arcs. Note that the arc at the left of the figure sweeps upward from zero degrees to approximately –110 degrees. Similarly, the arc at the right of the figure sweeps downward from zero degrees to approximately 110 degrees.
Figure 17.16. Positive and negative arc angles.
Note the dashed boxes around ...
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