text: /*
  -----------------------------------------------------------------------------
  This source file is part of OGRE
      (Object-oriented Graphics Rendering Engine)
  For the latest info, see http://www.ogre3d.org/
  
  Copyright (c) 2000-2014 Torus Knot Software Ltd
  
  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.
  -----------------------------------------------------------------------------
  */
  
  #ifndef __Bone_H__
  #define __Bone_H__
  
  #include "OgrePrerequisites.h"
  #include "OgreOldNode.h"
  
  
  namespace Ogre 
  {
  namespace v1
  {
  
      /** \addtogroup Core
      *  @{
      */
      /** \addtogroup Animation
      *  @{
      */
  
      /** A bone in a skeleton.
      @remarks
          See Skeleton for more information about the principles behind skeletal animation.
          This class is a node in the joint hierarchy. Mesh vertices also have assignments
          to bones to define how they move in relation to the skeleton.
      */
      class _OgreExport OldBone : public OldNode
      {
      public:
          /** Constructor, not to be used directly (use OldBone::createChild or Skeleton::createBone) */
          OldBone(unsigned short handle, Skeleton* creator);
          /** Constructor, not to be used directly (use OldBone::createChild or Skeleton::createBone) */
          OldBone(const String& name, unsigned short handle, Skeleton* creator);
          ~OldBone();
  
          /** Creates a new OldBone as a child of this bone.
          @remarks
              This method creates a new bone which will inherit the transforms of this
              bone, with the handle specified.
              @param 
                  handle The numeric handle to give the new bone; must be unique within the Skeleton.
              @param
                  translate Initial translation offset of child relative to parent
              @param
                  rotate Initial rotation relative to parent
          */
          OldBone* createChild(unsigned short handle, 
              const Vector3& translate = Vector3::ZERO, const Quaternion& rotate = Quaternion::IDENTITY);
  
  
          /** Gets the numeric handle for this bone (unique within the skeleton). */
          unsigned short getHandle(void) const;
  
          /** Sets the current position / orientation to be the 'binding pose' ie the layout in which 
              bones were originally bound to a mesh.
          */
          void setBindingPose(void);
  
          /** Resets the position and orientation of this OldBone to the original binding position.
          @remarks
              Bones are bound to the mesh in a binding pose. They are then modified from this
              position during animation. This method returns the bone to it's original position and
              orientation.
          */
          void reset(void);
  
          /** Sets whether or not this bone is manually controlled. 
          @remarks
              Manually controlled bones can be altered by the application at runtime, 
              and their positions will not be reset by the animation routines. Note 
              that you should also make sure that there are no AnimationTrack objects
              referencing this bone, or if there are, you should disable them using
              pAnimation->destroyTrack(pBone->getHandle());
          @par
              You can also use AnimationState::setBlendMask to mask out animation from 
              chosen tracks if you want to prevent application of a scripted animation 
              to a bone without altering the Animation definition.
          */
          void setManuallyControlled(bool manuallyControlled);
  
          /** Getter for mManuallyControlled Flag */
          bool isManuallyControlled() const;
  
          
          /** Gets the transform which takes bone space to current from the binding pose. 
          @remarks
              Internal use only.
          */
          void _getOffsetTransform(Matrix4& m) const;
  
          /** Gets the inverted binding pose scale. */
          const Vector3& _getBindingPoseInverseScale(void) const { return mBindDerivedInverseScale; }
          /** Gets the inverted binding pose position. */
          const Vector3& _getBindingPoseInversePosition(void) const { return mBindDerivedInversePosition; }
          /** Gets the inverted binding pose orientation. */
          const Quaternion& _getBindingPoseInverseOrientation(void) const { return mBindDerivedInverseOrientation; }
  
          /// @see OldNode::needUpdate
          void needUpdate(bool forceParentUpdate = false);
  
  
      protected:
          /// The numeric handle of this bone
          unsigned short mHandle;
  
          /** Bones set as manuallyControlled are not reseted in Skeleton::reset() */
          bool mManuallyControlled;
  
          /** See Node. */
          OldNode* createChildImpl(void);
          /** See Node. */
          OldNode* createChildImpl(const String& name);
  
          /// Pointer back to creator, for child creation (not smart ptr so child does not preserve parent)
          Skeleton* mCreator;
  
          /// The inversed derived scale of the bone in the binding pose
          Vector3 mBindDerivedInverseScale;
          /// The inversed derived orientation of the bone in the binding pose
          Quaternion mBindDerivedInverseOrientation;
          /// The inversed derived position of the bone in the binding pose
          Vector3 mBindDerivedInversePosition;
      };
  
      /** @} */
      /** @} */
  
  }
  }
  
  #endif
  