pie Slice

pieslice.m

+ pieSliceWithCentre: (CGPoint) c innerRadius: (double) ir outerRadius: (double) or
          startAngle: (double) theta1 endAngle: (double) theta2 {
    UIBezierPath *path = [UIBezierPath bezierPath];
    
    if (path) {
        [path moveToPoint: CGPointMake(cos(theta1)*ir, sin(theta1)*or)];
        [path addLineToPoint: CGPointMake(cos(theta1)*or, sin(theta1)*or)];
        [path addArcWithCenter: CGPointZero radius: or startAngle: theta1 endAngle: theta2 clockwise: NO];
        [path addLineToPoint: CGPointMake(cos(theta2)*ir, sin(theta2)*ir)];
        [path addArcWithCenter: CGPointZero radius: ir startAngle: theta2 endAngle:theta1 clockwise: NO];
        [path closePath];
        
        
        [path applyTransform: CGAffineTransformMakeTranslation(c.x, c.y)];
    }
    
    return path;
}