22 - (id)initWithOverlay:(
id <MAOverlay>)overlay;
27 @property (nonatomic, readonly) id <MAOverlay>
overlay;
34 - (CGPoint)pointForMapPoint:(
MAMapPoint)mapPoint;
48 - (CGRect)rectForMapRect:(
MAMapRect)mapRect;
71 - (void)drawMapRect:(
MAMapRect)mapRect zoomScale:(
MAZoomScale)zoomScale inContext:(CGContextRef)context;
79 - (void)setNeedsDisplayInMapRect:(
MAMapRect)mapRect;
平面投影坐标结构定义
Definition: MAGeometry.h:38
CGFloat alpha
overlay的透明度
Definition: MAOverlayView.h:91
id< MAOverlay > overlay
关联的overlay对象
Definition: MAOverlayView.h:27
该类是地图覆盖物View的基类, 提供绘制overlay的接口但并无实际的实现
Definition: MAOverlayView.h:15
平面投影矩形结构定义
Definition: MAGeometry.h:52
double MAZoomScale
比例关系:MAZoomScale = Screen Point / MAMapPoint, 当MAZoomScale = 1时, 1 screen point = 1 MAMapPoint...
Definition: MAGeometry.h:59
CGFloat contentScaleFactor
context的比例系数
Definition: MAOverlayView.h:96