For the way in post #2 to have filling see documentation (Troubleshooting / Known Issues section).
Or use the way in post #6.
Or you can use a 3D marker with a circle prefab.
Or you can use TilesetOverlayExample (see example atlas), where the overlay will contain a circle texture.
Or you can write a custom map shader that will draw circles. It's not very complicated, but you will be able to have a limited number of circles.
]]>How to open the built-in update system:
Online Maps / Help / Check Updates.
OnlineMaps.version == "2.3.0.18"
]]>And thank you very much for the distance limitation example, that's just what we need!
]]>Example how to limit the distance of the map from the marker:
using System;
using UnityEngine;
public class LimitPositionWithRadius:MonoBehaviour
{
public float raduis = 1.5f; // km
private OnlineMapsMarker playerMarker;
private float sqrRadius;
private OnlineMaps map;
private bool ignoreEvent;
private void Start()
{
sqrRadius = raduis * raduis;
map = OnlineMaps.instance;
map.OnChangePosition += OnChangePosition;
map.OnChangeZoom += OnChangePosition;
playerMarker = map.AddMarker(map.position, "Player");
}
private void OnChangePosition()
{
if (ignoreEvent) return;
double mx, my;
playerMarker.GetPosition(out mx, out my);
double px, py;
map.GetPosition(out px, out py);
double dx, dy;
OnlineMapsUtils.DistanceBetweenPoints(px, py, mx, my, out dx, out dy);
double sqrR = dx * dx + dy * dy;
if (sqrR > sqrRadius)
{
double tx1, ty1, tx2, ty2;
map.projection.CoordinatesToTile(px, py, map.zoom, out tx1, out ty1);
map.projection.CoordinatesToTile(mx, my, map.zoom, out tx2, out ty2);
double scale = raduis / Math.Sqrt(sqrR);
double ntx = tx2 + (tx1 - tx2) * scale;
double nty = ty2 + (ty1 - ty2) * scale;
map.projection.TileToCoordinates(ntx, nty, map.zoom, out ntx, out nty);
ignoreEvent = true;
map.SetPosition(ntx, nty);
ignoreEvent = false;
OnlineMapsUtils.DistanceBetweenPoints(ntx, nty, mx, my, out dx, out dy);
Debug.Log("New distance: " + Math.Sqrt(dx * dx + dy * dy));
}
}
}Actually I also need to limit, how far the map can be scrolled - for example, no further than 1.5 kilometers from current player position... And it seems that in order to do this (in order to calculate OnlineMapsPositionRange), I have to basically solve the same problem - to find points in (lat, long), which would have a distance of 1500 meters between them and a player position. Can you please tell me, how can I do this?
]]>I'm sorry for any confusion I caused... You see, we have objects (markers) on the map and want to show a circle around player marker, which should explain to player which objects can be interacted with (since they are considered visible) and which can't (the player should reach them first)... So on the one hand we need a solution, which would look physically correct (the circle should overlap the visible markers and match the distance to objects, which is also being displayed) and on the other hand everything should scale like markers when zoom level is changed...
Can you please help us understand, how to do this?
]]>Yes, you can place the mesh on the map.
Actually, it would be a much better solution.
The example below.
Just your original question was about poly.
Use OnlineMapsTileSetControl.GetWorldPosition, to convert coordinates in Unity World Space position.
http://infinity-code.com/doxygen/online … 2992c6e097
Yes, you can convert the radius in meters to pixels.
If you really need it, I can give an example.
But keep in mind a few things:
1. The radius in pixels (R) is different at different zoom level.
2. R is different at different latitudes.
3. R left == R right.
4. R left != R up.
5. R up != R down.
Example of drawing a circle using mesh:
using UnityEngine;
public class DrawCircleWithRadius : MonoBehaviour
{
public GameObject circle;
public float diameterInKM = 0.5f;
public float sizeY = 0.02f;
private OnlineMapsMarker marker;
private void Start()
{
marker = OnlineMaps.instance.AddMarker(OnlineMaps.instance.position, "Marker");
}
private void Update ()
{
circle.transform.position = OnlineMapsTileSetControl.instance.GetWorldPosition(marker.position);
OnlineMaps api = OnlineMaps.instance;
Vector2 distance = OnlineMapsUtils.DistanceBetweenPoints(api.topLeftPosition, api.bottomRightPosition);
float scaleX = diameterInKM / distance.x * api.tilesetSize.x;
float scaleY = diameterInKM / distance.y * api.tilesetSize.y;
float scale = (scaleX + scaleY) / 2;
circle.transform.localScale = new Vector3(scale, sizeY, scale);
}
}