add Polyline.miterLimit

document default values for Polyline properties
Buddy: Paul

Author: jonty-dawson

src/private/WRLDPolyline.mm

@@ -59,6 +59,7 @@ - (instancetype)initWithCoordinates:(CLLocationCoordinate2D *)coords
 
         _color = [UIColor blackColor];
         _lineWidth = 10.0f;
+        _miterLimit = 10.0f;
         _elevation = 0;
         _elevationMode = WRLDElevationMode::WRLDElevationModeHeightAboveGround;
         _indoorMapId = indoorMapId;
@@ -100,6 +101,16 @@ - (void)setLineWidth:(CGFloat)lineWidth
     m_pPolylineApi->SetThickness(m_polylineId, static_cast<float>(_lineWidth));
 }
 
+- (void)setMiterLimit:(CGFloat)miterLimit
+{
+    _miterLimit = miterLimit;
+    if (![self nativeCreated])
+    {
+        return;
+    }
+    m_pPolylineApi->SetMiterLimit(m_polylineId, static_cast<float>(_miterLimit));
+}
+
 - (void)setScalesWithMap:(Boolean)scalesWithMap
 {
     _scalesWithMap = scalesWithMap;
@@ -188,6 +199,7 @@ - (void)createNative:(Eegeo::Api::EegeoMapApi&) mapApi
         .SetCoordinates(m_coords)
         .SetFillColor([self _getColor])
         .SetThickness(static_cast<float>(_lineWidth))
+        .SetMiterLimit(static_cast<float>(_miterLimit))
         .SetShouldScaleWithMap(_scalesWithMap)
         .SetElevationMode(elevationMode)
         .SetElevation(_elevation)

src/public/WRLDPolyline.h

@@ -39,23 +39,35 @@ NS_ASSUME_NONNULL_BEGIN
                                onFloor:(NSInteger)floorId;
 
 
-/// The color of the polyline.
+/// The color of the polyline. The default value is opaque black.
 @property (nonatomic, copy) UIColor* color;
 
-/// The thickness in pixels of the polyline.
+/// The thickness in pixels of the polyline. The default value is 10.
 @property (nonatomic) CGFloat lineWidth;
 
+/*! A value used to limit the extent of spikes where line segments join at small
+ (acute) angles. The value of miterLimit represents the maximum ratio between the
+ length of the miter join diagonal, and lineWidth. The default value is 10, which
+ results in clamping of the miter diagonal when the join angle is less than
+ approximately 11 degrees.
+ */
+@property (nonatomic) CGFloat miterLimit;
+
 /// If YES, line width scales with perspective as the map viewpoint zooms in and out (default NO)
 @property (nonatomic) Boolean scalesWithMap;
 
-/// The height of the polyline above either the ground, or sea-level, depending on the elevationMode property.
+/*! The height of the polyline above either the ground, or sea-level, depending on the elevationMode property.
+ The default value is 0
+ */
 @property (nonatomic) CLLocationDistance elevation;
 
 /*!
  Specifies how the elevation property of this polyline is interpreted:
  
  - `WRLDElevationModeHeightAboveSeaLevel`: The elevation is an absolute altitude above mean sea level, in meters.
  - `WRLDElevationModeHeightAboveGround`: The elevation is a height relative to the map's terrain, in meters.
+ 
+ The default value is WRLDElevationModeHeightAboveGround
  */
 @property (nonatomic) WRLDElevationMode elevationMode;