Adding Blink-side 3d Box and Bounds calculations to TransformOperations

Source/platform/transforms/RotateTransformOperation.h

 /*
  * 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
@@ skipping 28 matching lines @@
     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; }
 
+    bool hasZeroAxis() const;

[Ian Vollick, 2014/06/17 15:54:56]

nit: now that you've got ::axis() below, maybe we could just use
axis().isZero()?

[awoloszyn, 2014/06/17 20:06:02]

Done.

+    FloatPoint3D axis() const;
+    static bool shareSameAxis(const RotateTransformOperation* fromRotation, const RotateTransformOperation* toRotation, FloatPoint3D* axis, double* fromAngle, double* toAngle);
+
+    virtual bool canInterpolateWith(const TransformOperation& other) const;
+    virtual OperationType type() const OVERRIDE { return m_type; }
+
 private:
     virtual bool isIdentity() const OVERRIDE { return !m_angle; }
 
-    virtual OperationType type() const OVERRIDE { return m_type; }
-
     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
     {
@@ skipping 15 matching lines @@
     double m_x;
     double m_y;
     double m_z;
     double m_angle;
     OperationType m_type;
 };
 
 } // namespace WebCore
 
 #endif // RotateTransformOperation_h