Force.h

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// This file is part of ShapeOp, a lightweight C++ library
// for static and dynamic geometry processing.
//
// Copyright (C) 2014 Sofien Bouaziz <sofien.bouaziz@gmail.com>
// Copyright (C) 2014 LGG EPFL
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef FORCE_H
#define FORCE_H
#include "Types.h"

namespace ShapeOp {

class SHAPEOP_API Force {
 public:
  virtual ~Force() {};
  virtual Vector3 get(const Matrix3X &positions, int id) const = 0;
};

class SHAPEOP_API GravityForce : public Force {
 public:
  GravityForce(const Vector3 &f);
  virtual ~GravityForce() {};
  virtual Vector3 get(const Matrix3X &/*positions*/, int /*id*/) const override final;
 private:
  Vector3 f_;
};

class SHAPEOP_API VertexForce : public Force {
 public:
  VertexForce(const Vector3 &f = Vector3::Zero(), int id = -1);
  virtual ~VertexForce() {};
  virtual Vector3 get(const Matrix3X &/*position*/, int id) const override final;
  void setId(int id);
  void setForce(const Vector3 &f);
 private:
  Vector3 f_;
  int id_;
};
} // namespace ShapeOp
#ifdef SHAPEOP_HEADER_ONLY
#include "Force.cpp"
#endif
#endif // FORCE_H

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