add fill pattern image to RMShape

@@ -66,6 +66,9 @@
 /** The fill color of the shape. Defaults to clear. */
 @property (nonatomic, strong) UIColor *fillColor;
 
+/** The fill pattern image of the shape. If set, the fillColor is set to `nil`. */
+@property (nonatomic, strong) UIImage *fillPatternImage;
+
 @property (nonatomic, weak) NSArray *lineDashLengths;
 @property (nonatomic, assign) CGFloat lineDashPhase;
 @property (nonatomic, assign) BOOL scaleLineDash;

@@ -123,6 +123,8 @@
 
     shapeLayer.lineWidth = scaledLineWidth;
 
+    shapeLayer.fillColor = [[UIColor colorWithPatternImage:self.fillPatternImage] CGColor];
+
     if (lineDashLengths)
     {
         if (scaleLineDash)
@@ -516,6 +518,18 @@
     }
 }
 
+- (void)setFillPatternImage:(UIImage *)fillPatternImage
+{
+    if (fillPatternImage)
+        self.fillColor = nil;
+
+    if (_fillPatternImage != fillPatternImage)
+    {
+        _fillPatternImage = fillPatternImage;
+        [self recalculateGeometryAnimated:NO];
+    }
+}
+
 - (CGFloat)shadowBlur
 {
     return shapeLayer.shadowRadius;