/*
 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
 *           (C) 2000 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef SKY_ENGINE_PLATFORM_TRANSFORMS_ROTATETRANSFORMOPERATION_H_
#define SKY_ENGINE_PLATFORM_TRANSFORMS_ROTATETRANSFORMOPERATION_H_

#include "flutter/sky/engine/platform/transforms/TransformOperation.h"

namespace blink {

class PLATFORM_EXPORT RotateTransformOperation : public TransformOperation {
 public:
  static PassRefPtr<RotateTransformOperation> create(double angle,
                                                     OperationType type) {
    return adoptRef(new RotateTransformOperation(0, 0, 1, angle, type));
  }

  static PassRefPtr<RotateTransformOperation> create(double x,
                                                     double y,
                                                     double z,
                                                     double angle,
                                                     OperationType type) {
    return adoptRef(new RotateTransformOperation(x, y, z, angle, type));
  }

  double x() const { return m_x; }
  double y() const { return m_y; }
  double z() const { return m_z; }
  double angle() const { return m_angle; }

  FloatPoint3D axis() const;
  static bool shareSameAxis(const RotateTransformOperation* fromRotation,
                            const RotateTransformOperation* toRotation,
                            FloatPoint3D* axis,
                            double* fromAngle,
                            double* toAngle);

  virtual bool canBlendWith(const TransformOperation& other) const;
  virtual OperationType type() const override { return m_type; }

 private:
  virtual bool isIdentity() const override { return !m_angle; }

  virtual bool operator==(const TransformOperation& o) const override {
    if (!isSameType(o))
      return false;
    const RotateTransformOperation* r =
        static_cast<const RotateTransformOperation*>(&o);
    return m_x == r->m_x && m_y == r->m_y && m_z == r->m_z &&
           m_angle == r->m_angle;
  }

  virtual void apply(TransformationMatrix& transform,
                     const FloatSize& /*borderBoxSize*/) const override {
    transform.rotate3d(m_x, m_y, m_z, m_angle);
  }

  virtual PassRefPtr<TransformOperation> blend(
      const TransformOperation* from,
      double progress,
      bool blendToIdentity = false) override;

  RotateTransformOperation(double x,
                           double y,
                           double z,
                           double angle,
                           OperationType type)
      : m_x(x), m_y(y), m_z(z), m_angle(angle), m_type(type) {
    ASSERT(type == RotateX || type == RotateY || type == RotateZ ||
           type == Rotate3D);
  }

  double m_x;
  double m_y;
  double m_z;
  double m_angle;
  OperationType m_type;
};

}  // namespace blink

#endif  // SKY_ENGINE_PLATFORM_TRANSFORMS_ROTATETRANSFORMOPERATION_H_