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