TrueSync: TSPolygonCollider2D.cs Source File

TrueSync

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 using System.Collections.Generic;
 using UnityEngine;
 
 namespace TrueSync {
 
  [AddComponentMenu("TrueSync/Physics/PolygonCollider2D", 0)]
  public class TSPolygonCollider2D : TSCollider2D {
 
  [SerializeField]
  private TSVector2[] _points;
 
  public TSVector2[] points {
  get {
  return _points;
  }
 
  set {
  if (_body == null) {
  _points = value;
  }
  }
  }
 
  public override TrueSync.Physics2D.Shape[] CreateShapes() {
  if (_points == null || _points.Length == 0) {
  return null;
  }
 
 
  TSVector2 lossy2D = new TSVector2(lossyScale.x, lossyScale.y);
  TrueSync.Physics2D.Vertices v = new Physics2D.Vertices();
  for (int index = 0, length = _points.Length; index < length; index++) {
  v.Add(TSVector2.Scale(_points[index], lossy2D));
  }
 
  List<TrueSync.Physics2D.Vertices> convexShapeVs = TrueSync.Physics2D.BayazitDecomposer.ConvexPartition(v);
  TrueSync.Physics2D.Shape[] result = new Physics2D.Shape[convexShapeVs.Count];
  for (int index = 0, length = result.Length; index < length; index++) {
  result[index] = new TrueSync.Physics2D.PolygonShape(convexShapeVs[index], 1);
  }
 
  return result;
  }
 
  protected override void DrawGizmos() {
  DrawPolygon(_points);
  }
 
  private void DrawPolygon(TSVector2[] allPoints) {
  if (allPoints == null || allPoints.Length == 0) {
  return;
  }
 
  for (int index = 0, length = allPoints.Length - 1; index < length; index++) {
  Gizmos.DrawLine(allPoints[index].ToVector(), allPoints[index+1].ToVector());
  }
 
  Gizmos.DrawLine(allPoints[allPoints.Length - 1].ToVector(), allPoints[0].ToVector());
  }
 
  protected override Vector3 GetGizmosSize() {
  return lossyScale.ToVector();
  }
 
  }
 
 }
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