source: downloads/ogre/OgreMain/src/OgrePose.cpp @ 44

/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2005 The OGRE Team
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/
#include "OgreStableHeaders.h"
#include "OgrePose.h"
#include "OgreHardwareBufferManager.h"

namespace Ogre {
        //---------------------------------------------------------------------
        Pose::Pose(ushort target, const String& name)
                : mTarget(target), mName(name)
        {
        }
        //---------------------------------------------------------------------
        Pose::~Pose()
        {
        }
        //---------------------------------------------------------------------
        void Pose::addVertex(size_t index, const Vector3& offset)
        {
                mVertexOffsetMap[index] = offset;
                mBuffer.setNull();
        }
        //---------------------------------------------------------------------
        void Pose::removeVertex(size_t index)
        {
                VertexOffsetMap::iterator i = mVertexOffsetMap.find(index);
                if (i != mVertexOffsetMap.end())
                {
                        mVertexOffsetMap.erase(i);
                        mBuffer.setNull();
                }
        }
        //---------------------------------------------------------------------
        void Pose::clearVertexOffsets(void)
        {
                mVertexOffsetMap.clear();
                mBuffer.setNull();
        }
        //---------------------------------------------------------------------
        Pose::ConstVertexOffsetIterator 
                Pose::getVertexOffsetIterator(void) const
        {
                return ConstVertexOffsetIterator(mVertexOffsetMap.begin(), mVertexOffsetMap.end());
        }
        //---------------------------------------------------------------------
        Pose::VertexOffsetIterator 
                Pose::getVertexOffsetIterator(void)
        {
                return VertexOffsetIterator(mVertexOffsetMap.begin(), mVertexOffsetMap.end());
        }
        //---------------------------------------------------------------------
        const HardwareVertexBufferSharedPtr& Pose::_getHardwareVertexBuffer(size_t numVertices) const
        {
                if (mBuffer.isNull())
                {
                        // Create buffer
                        mBuffer = HardwareBufferManager::getSingleton().createVertexBuffer(
                                VertexElement::getTypeSize(VET_FLOAT3),
                                numVertices, HardwareBuffer::HBU_STATIC_WRITE_ONLY);

                        float* pFloat = static_cast<float*>(
                                mBuffer->lock(HardwareBuffer::HBL_DISCARD));
                        // initialise
                        memset(pFloat, 0, mBuffer->getSizeInBytes()); 
                        // Set each vertex
                        for (VertexOffsetMap::const_iterator i = mVertexOffsetMap.begin();
                                i != mVertexOffsetMap.end(); ++i)
                        {
                                float* pDst = pFloat + (3 * i->first);
                                *pDst++ = i->second.x;
                                *pDst++ = i->second.y;
                                *pDst++ = i->second.z;
                        }
                        mBuffer->unlock();
                }
                return mBuffer;
        }
        //---------------------------------------------------------------------
        Pose* Pose::clone(void) const
        {
                Pose* newPose = new Pose(mTarget, mName);
                newPose->mVertexOffsetMap = mVertexOffsetMap;
                // Allow buffer to recreate itself, contents may change anyway
                return newPose;
        }

}