text: //
  // Copyright (c) 2008-2017 the Urho3D project.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  //
  
  #pragma once
  
  #include "../Cross2D/CollisionShape2D.h"
  
  namespace Cross
  {
  /// 2D chain collision component.
  class CROSS_API CollisionChain2D : public CollisionShape2D
  {
      CROSS_OBJECT(CollisionChain2D, CollisionShape2D);
  
  public:
      /// Construct.
      CollisionChain2D(Context* context);
      /// Destruct.
      virtual ~CollisionChain2D();
      /// Register object factory.
      static void RegisterObject(Context* context);
  
      /// Set loop.
      void SetLoop(bool loop);
      /// Set vertex count.
      void SetVertexCount(unsigned count);
      /// Set vertex.
      void SetVertex(unsigned index, const Vector2& vertex);
      /// Set vertices.
      void SetVertices(const PODVector<Vector2>& vertices);
      /// Set vertices attribute.
      void SetVerticesAttr(const PODVector<unsigned char>& value);
  
      /// Return loop.
      bool GetLoop() const { return loop_; }
  
      /// Return vertex count.
      unsigned GetVertexCount() const { return vertices_.Size(); }
  
      /// Return vertex.
      const Vector2& GetVertex(unsigned index) const { return (index < vertices_.Size()) ? vertices_[index] : Vector2::ZERO; }
  
      /// Return vertices.
      const PODVector<Vector2>& GetVertices() const { return vertices_; }
  
      /// Return vertices attribute.
      PODVector<unsigned char> GetVerticesAttr() const;
  
  private:
      /// Apply node world scale.
      virtual void ApplyNodeWorldScale();
      /// Recreate fixture.
      void RecreateFixture();
  
      /// Chain shape.
      b2ChainShape chainShape_;
      /// Loop.
      bool loop_;
      /// Vertices.
      PODVector<Vector2> vertices_;
  };
  
  }
  