xarc - draw a part of an ellipse

Calling Sequence

xarc(x,y,w,h,a1,a2)

Parameters

• x,y,w,h : four real values defining a rectangle.
• a1,a2 : real values defining a sector.

Description

xarc draws a part of an ellipse contained in the rectangle (x,y,w,h) (upper-left point, width, height), and in the sector defined by the angle alpha1 and the angle alpha1+alpha2. alpha1 and alpha2 are given respectively by a1/64 degrees and a2/64 degrees. This function uses the current graphics scale and color.

Examples

// isoview scaling 
plot2d(0,0,-1,"031"," ",[-2,-2,2,2])
xset("color",3)
xarc(-1,1,2,2,0,90*64)
xarc(-1.5,1.5,3,3,0,360*64)
 

See Also

xarcs  xfarc  xfarcs  

Author

J.Ph.C.