Hello.
/* INFINITY CODE */
/* https://infinity-code.com */
using System;
using System.Collections.Generic;
using UnityEngine;
namespace InfinityCode.OnlineMapsExamples
{
/// <summary>
/// Example how to draw a circle around a marker
/// </summary>
public class BouncingCircle : MonoBehaviour
{
private static BouncingCircle instance;
public AnimationCurve curve = AnimationCurve.EaseInOut(0, 0, 1, 1);
public float duration = 3;
/// <summary>
/// Radius of the circle
/// </summary>
public float radiusKM = 0.1f;
/// <summary>
/// Number of segments
/// </summary>
public int segments = 32;
private List<BoundingItem> items;
/// <summary>
/// This method is called when a user clicks on a map
/// </summary>
private void OnMapClick()
{
// Get the coordinates under cursor
double lng, lat;
OnlineMapsControlBase.instance.GetCoords(out lng, out lat);
OnlineMapsVector2d center = new OnlineMapsVector2d(lng, lat);
// Create a new marker under cursor
OnlineMapsMarkerManager.CreateItem(lng, lat, "Marker " + OnlineMapsMarkerManager.CountItems);
OnlineMaps map = OnlineMaps.instance;
// Get the coordinate at the desired distance
double nlng, nlat;
OnlineMapsUtils.GetCoordinateInDistance(lng, lat, radiusKM, 90, out nlng, out nlat);
double tx1, ty1, tx2, ty2;
// Convert the coordinate under cursor to tile position
map.projection.CoordinatesToTile(lng, lat, 20, out tx1, out ty1);
// Convert remote coordinate to tile position
map.projection.CoordinatesToTile(nlng, nlat, 20, out tx2, out ty2);
// Calculate radius in tiles
double r = tx2 - tx1;
// Create a new array for points
OnlineMapsVector2d[] points = new OnlineMapsVector2d[segments];
// Calculate a step
double step = 360d / segments;
// Calculate each point of circle
for (int i = 0; i < segments; i++)
{
double px = tx1 + Math.Cos(step * i * OnlineMapsUtils.Deg2Rad) * r;
double py = ty1 + Math.Sin(step * i * OnlineMapsUtils.Deg2Rad) * r;
map.projection.TileToCoordinates(px, py, 20, out lng, out lat);
points[i] = new OnlineMapsVector2d(lng, lat);
}
// Create a new polygon to draw a circle
OnlineMapsDrawingPoly poly = new OnlineMapsDrawingPoly(points, Color.red, 3);
OnlineMapsDrawingElementManager.AddItem(poly);
if (items == null) items = new List<BoundingItem>();
items.Add(new BoundingItem
{
points = points,
center = center
});
}
/// <summary>
/// This method is called when the script starts
/// </summary>
private void Start()
{
instance = this;
// Subscribe to click on map event
OnlineMapsControlBase.instance.OnMapClick += OnMapClick;
}
private void Update()
{
if (items == null || items.Count == 0) return;
items.RemoveAll(i => i.Update());
OnlineMaps.instance.Redraw();
}
public class BoundingItem
{
public OnlineMapsVector2d[] points;
public bool finished;
public OnlineMapsVector2d center;
private float progress;
public bool Update()
{
progress += Time.deltaTime / instance.duration;
if (progress >= 1)
{
progress = 1;
finished = true;
}
float radius = instance.radiusKM * instance.curve.Evaluate(progress);
double nlng, nlat;
OnlineMapsUtils.GetCoordinateInDistance(center.x, center.y, radius, 90, out nlng, out nlat);
double tx1, ty1, tx2, ty2;
OnlineMaps map = OnlineMaps.instance;
// Convert the coordinate under cursor to tile position
map.projection.CoordinatesToTile(center.x, center.y, 20, out tx1, out ty1);
// Convert remote coordinate to tile position
map.projection.CoordinatesToTile(nlng, nlat, 20, out tx2, out ty2);
// Calculate radius in tiles
double r = tx2 - tx1;
int segments = points.Length;
// Calculate a step
double step = 360d / segments;
double lng, lat;
// Calculate each point of circle
for (int i = 0; i < segments; i++)
{
double px = tx1 + Math.Cos(step * i * OnlineMapsUtils.Deg2Rad) * r;
double py = ty1 + Math.Sin(step * i * OnlineMapsUtils.Deg2Rad) * r;
map.projection.TileToCoordinates(px, py, 20, out lng, out lat);
points[i] = new OnlineMapsVector2d(lng, lat);
}
return finished;
}
}
}
}
Kind Regards,
Infinity Code Team.
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