added shape properties to RMShape like in RMPath

@@ -60,6 +60,9 @@
 @property (nonatomic, assign) BOOL scaleLineDash;
 @property (nonatomic, assign) float lineWidth;
 @property (nonatomic, assign) BOOL	scaleLineWidth;
+@property (nonatomic, assign) CGFloat shadowBlur;
+@property (nonatomic, assign) CGSize shadowOffset;
+@property (nonatomic, assign) BOOL enableShadow;
 
 @property (nonatomic, readonly) CGRect pathBoundingBox;
 

@@ -48,6 +48,9 @@
 @synthesize scaleLineWidth;
 @synthesize lineDashLengths;
 @synthesize scaleLineDash;
+@synthesize shadowBlur;
+@synthesize shadowOffset;
+@synthesize enableShadow;
 @synthesize pathBoundingBox;
 
 #define kDefaultLineWidth 2.0
@@ -70,6 +73,9 @@
     shapeLayer.lineJoin = kCALineJoinMiter;
     shapeLayer.strokeColor = [UIColor blackColor].CGColor;
     shapeLayer.fillColor = [UIColor clearColor].CGColor;
+    shapeLayer.shadowRadius = 0.0;
+    shapeLayer.shadowOpacity = 0.0;
+    shapeLayer.shadowOffset = CGSizeMake(0, 0);
     [self addSublayer:shapeLayer];
 
     pathBoundingBox = CGRectZero;
@@ -413,6 +419,40 @@
     }
 }
 
+- (CGFloat)shadowBlur
+{
+    return shapeLayer.shadowRadius;
+}
+
+- (void)setShadowBlur:(CGFloat)blur
+{
+    shapeLayer.shadowRadius = blur;
+    [self setNeedsDisplay];
+}
+
+- (CGSize)shadowOffset
+{
+    return shapeLayer.shadowOffset;
+}
+
+- (void)setShadowOffset:(CGSize)offset
+{
+    shapeLayer.shadowOffset = offset;
+    [self setNeedsDisplay];
+}
+
+- (BOOL)enableShadow
+{
+    return (shapeLayer.shadowOpacity > 0);
+}
+
+- (void)setEnableShadow:(BOOL)flag
+{
+    shapeLayer.shadowOpacity   = (flag ? 1.0 : 0.0);
+    shapeLayer.shouldRasterize = ! flag;
+    [self setNeedsDisplay];
+}
+
 - (NSString *)fillRule
 {
     return shapeLayer.fillRule;