init project

ios/Classes/Model/AMapPolyline.m

@@ -0,0 +1,104 @@
+//
+//  AMapPolyline.m
+//  amap_map
+//
+//  Created by lly on 2020/11/6.
+//
+
+#import "AMapPolyline.h"
+#import "AMapConvertUtil.h"
+#import "MAPolyline+Flutter.h"
+
+@interface AMapPolyline ()
+
+@property (nonatomic, strong, readwrite) MAPolyline *polyline;
+
+@end
+
+
+@implementation AMapPolyline
+
+- (instancetype)init {
+    self = [super init];
+    if (self) {
+        _alpha = 1.0;
+        _visible = YES;
+    }
+    return self;
+}
+
+- (void)postHookWith:(NSDictionary *)dict {
+    NSArray *points = dict[@"points"];
+    NSAssert(points.count > 0, @"polyline传入的经纬度点有误！");
+    //如果经纬度点已经有值，需要手动释放内存
+    if (_coords != NULL) {
+        free(_coords);
+        _coords = NULL;
+    }
+    _coordCount = points.count;
+    _coords = (CLLocationCoordinate2D*)malloc(_coordCount * sizeof(CLLocationCoordinate2D));
+    for (NSUInteger index = 0; index < _coordCount; index ++) {
+        NSArray *point = points[index];
+        _coords[index] = [AMapConvertUtil coordinateFromArray:point];
+    }
+}
+
+- (MAPolyline *)polyline {
+    if (_polyline == nil) {
+        if (self.geodesic) {//如果是大地曲线，则使用对应的类型
+            _polyline = [[MAGeodesicPolyline alloc] initWithPolylineId:self.id_];
+        } else {        
+            _polyline = [[MAPolyline alloc] initWithPolylineId:self.id_];
+        }
+        [_polyline setPolylineWithCoordinates:_coords count:_coordCount];
+    }
+    return _polyline;
+}
+
+- (void)dealloc {
+    if (_coords != NULL) {
+        free(_coords);
+        _coords = NULL;
+    }
+}
+
+//更新polyline
+- (void)updatePolyline:(AMapPolyline *)polyline {
+    NSAssert((polyline != nil && [self.id_ isEqualToString:polyline.id_]), @"更新Polyline数据异常");
+    if ([self checkCoordsEqualWithPolyline:polyline] == NO) {//polyline更新了经纬度坐标
+        if (_coords != NULL) {
+            free(_coords);
+            _coords = NULL;
+        }
+        _coordCount = polyline->_coordCount;
+        _coords = (CLLocationCoordinate2D*)malloc(_coordCount * sizeof(CLLocationCoordinate2D));
+        for (NSUInteger index = 0; index < _coordCount; index ++) {
+            _coords[index] = polyline->_coords[index];
+        }
+    }
+    self.width = polyline.width;
+    self.color = polyline.color;
+    self.visible = polyline.visible;
+    self.alpha = polyline.alpha;
+    NSAssert(self.geodesic == polyline.geodesic, @"是否为大地曲线的变量，不允许动态修改");
+    self.dashLineType = polyline.dashLineType;
+    self.joinType = polyline.joinType;
+    self.capType = polyline.capType;
+    if (_polyline) {
+        [_polyline setPolylineWithCoordinates:_coords count:_coordCount];
+    }
+}
+
+- (BOOL)checkCoordsEqualWithPolyline:(AMapPolyline *)newPolyline {
+    if (_coordCount != newPolyline->_coordCount) {//数量不同，则直接更新
+        return NO;
+    }
+    for (NSUInteger index = 0; index < _coordCount; index++) {
+        if ([AMapConvertUtil isEqualWith:_coords[index] to:newPolyline->_coords[index]] == NO) {
+            return NO;
+        }
+    }
+    return YES;
+}
+
+@end