# title: circle of radius one with illumination to the right.
# label: circle illum

radius= getParam( 'radius', 1.0, 'radius of the circle' )
illumPos= getParam( 'illumPos', 'right', 'position of the illumination', [ 'right', 'left', 'top', 'bottom' ] )

sq1= cos(linspace(-PI/2,3*PI/2,37)) * radius
sq2= sin(linspace(-PI/2,3*PI/2,37)) * radius

if ( illumPos=='right' ):
   hsq1= sq1[0:19]
   hsq2= sq2[0:19]
elif ( illumPos=='top' ):
   t= sq1
   sq1= sq2
   sq2= t
   hsq1= sq1[0:19]
   hsq2= sq2[0:19]    
elif (  illumPos=='bottom' ):
   sq1= sq1* -1 
   t= sq1
   sq1= sq2
   sq2= t
   sq1= sq1* -1 
   hsq1= sq1[0:19]
   hsq2= sq2[0:19]    
elif ( illumPos=='left' ):
   sq1= sq1* -1 
   hsq1= sq1[0:19]
   hsq2= sq2[0:19]

ds= link( append( sq1, reverse(hsq1*0.9) ), append( sq2,reverse(hsq2*0.9) ) )

result= putProperty( ds, QDataSet.RENDER_TYPE, 'fillToZero>color=black&fillColor=black&symbol=none' )