Purpose 
Draw an arc on a host printer page. 
Syntax 
XPRINT ARC (x1!, y1!)  (x2!, y2!), arcStart!, arcEnd! [, rgbColor&] 
Remarks 
An arc is a section of a circle or an ellipse. To specify a particular arc, you would first define the full circle or ellipse of which it is a part, and then specify the points on the ellipse where the arc starts and stops. The full circle or ellipse is defined by its bounding rectangle, which is the smallest rectangle which can be drawn around the circle or ellipse. For example, if the circle is centered at position (400,400), with a radius of 100 pixels, the upper left corner (x1,y1) of the bounding rectangle is (300,300), and the lower right corner (x2,y2) is (500,500). The start point and end point of the arc are specified by their angle, which must be given in radians. A complete circle or ellipse is 2*pi radians. On a 12hour clockface, the values 0 and 2*pi both refer to the position of 3 o'clock, while the value 1*pi refers to the position of 9 o'clock. Other positions are specified by a radian value relative to these. In PowerBASIC, arcs are always drawn counterclockwise from the starting point to the ending point. Prior to any

x1!, y1! 
The upper left corner of the bounding rectangle of the full circle or ellipse. 
x2!, y2! 
The lower right corner of the bounding rectangle of the full circle or ellipse. 
ArcStart! 
The starting angle of the arc, in radians, from 0 to 2*pi. 
ArcEnd! 
The ending angle of the arc, in radians, from 0 to 2*pi radians. Note that arcs are always drawn counterclockwise from arcStart! to arcEnd!. Compared with a 12hour clockface, 0 or 2*pi radians is at 3 o'clock, and 1*pi radians is at 9 o'clock. 
rgbColor& 
Optional RGB color for the arc. If omitted (or 1), the current foreground color for the host printer page is used. 
See also 
Built In RGB Color Equates, XPRINT ATTACH, XPRINT COLOR, XPRINT ELLIPSE, XPRINT PIE, XPRINT STYLE, XPRINT WIDTH 
Example 
' Draw two arcs that combine into a circle. ' The upper half uses the default foreground color. ' The lower half is drawn in red. LOCAL Pi AS DOUBLE Pi = 4 * ATN(1) ' Calculate Pi XPRINT ARC (5, 5)  (105, 105), 0, Pi ' Upper half XPRINT ARC (5, 5)  (105, 105), Pi, 0, %RED ' Lower half 