feat(polygon, polyline): add getPath and getPaths

[willshowell]

Adds the MVCArray type and wrappers for the getPath() and getPaths() Google Maps API methods.

This should partially address requirements in #823

[abalad]

@willshowell lol Thanks

[willshowell]

@SebastianM @lazarljubenovic any chance of getting this reviewed? As far as I can tell, editable polygons are useless without a way to later retrieve the path.

[vsaravind007]

Hi @willshowell Any chance of an example on Plunker? Not been successful so far!

[willshowell]

@vsaravind007

import { Component, ViewChild } from '@angular/core';
import { AgmPolygon } from '@agm/core';

@Component({
  selector: 'app-root',
  styleUrls: ['./app.component.css'],
  template: `
    <agm-map
      [latitude]="lat"
      [longitude]="lon"
      [zoom]="zoom">
      <agm-polygon
        [paths]="path"
        [polyDraggable]="true"
        [editable]="true">
      </agm-polygon>
    </agm-map>
    <button (click)="getPath()">GET PATH</button>
  `
})
export class AppComponent {
  @ViewChild(AgmPolygon) polygon: any;

  // google maps zoom level
  zoom: number = 8;

  // initial center position for the map
  lat: number = 51.673858;
  lng: number = 7.815982;

  path = [
    { lat: 51.791629704426924, lng: -0.8624267578125 },
    { lat: 51.974729774949644, lng: 0.6317138671875 },
    { lat: 51.303145259199056, lng: 0.6646728515625 },
    { lat: 51.416338106400396, lng: -0.4779052734375 }
  ];

  getPath() {
    this.polygon.getPaths().then((x: any[]) => {
      x.forEach(y => {
        console.log('-');
        y.forEach(z => console.log(z.lat(), z.lng()));
      });
    });
  }

}

Note that you'll probably also need the changes from #990

Hope that helps!

[gaalvarez]

@willshowell how can I use your changes in this pull from my angular project? thanks

[Epenance]

It would be super neat to have this merged in, or a similar feature made at least. Its currently impossible to get the new paths of the polygon after it has been edited which is a shame.

[ghost]

@willshowell any chance you can update this for conflicts, and then we can all yell at @SebastianM to merge this? I am stuck without this.

[Jooeeyy]

What's up with this? Would be happy if this could be merged.

[daanvanrobays]

I would also be happy to see this getting merged. I've spend too much time already trying to find another way around.

[ghal]

I would be happy if this could be merged.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[youuri]

What the point with this issues?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[ghost]

@willshowell can you please fix conflicts? Also, while this is nice, what we really need is a path event.

[lakhvir-singh]

#991 (comment)

How can I get the coordinates of another map on same component?