# Visualization Library

A lightweight C++ OpenGL middleware for 2D/3D graphics

[Home] [Tutorials] [All Classes] [Grouped Classes]

- Main Page
- Related Pages
- Namespaces
- Classes
- Files

- File List
- File Members

# D:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlGraphics/RenderQueue.hpp

Go to the documentation of this file.

    00001 /**************************************************************************************/
    00002 /*                                                                                    */
    00003 /*  Visualization Library                                                             */
    00004 /*  http://www.visualizationlibrary.org                                               */
    00005 /*                                                                                    */
    00006 /*  Copyright (c) 2005-2010, Michele Bosi                                             */
    00007 /*  All rights reserved.                                                              */
    00008 /*                                                                                    */
    00009 /*  Redistribution and use in source and binary forms, with or without modification,  */
    00010 /*  are permitted provided that the following conditions are met:                     */
    00011 /*                                                                                    */
    00012 /*  - Redistributions of source code must retain the above copyright notice, this     */
    00013 /*  list of conditions and the following disclaimer.                                  */
    00014 /*                                                                                    */
    00015 /*  - Redistributions in binary form must reproduce the above copyright notice, this  */
    00016 /*  list of conditions and the following disclaimer in the documentation and/or       */
    00017 /*  other materials provided with the distribution.                                   */
    00018 /*                                                                                    */
    00019 /*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND   */
    00020 /*  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED     */
    00021 /*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE            */
    00022 /*  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR  */
    00023 /*  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    */
    00024 /*  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;      */
    00025 /*  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON    */
    00026 /*  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT           */
    00027 /*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS     */
    00028 /*  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                      */
    00029 /*                                                                                    */
    00030 /**************************************************************************************/
    00031
    00032 #ifndef RenderQueue_INCLUDE_ONCE
    00033 #define RenderQueue_INCLUDE_ONCE
    00034
    00035 #include <vlGraphics/RenderQueueSorter.hpp>
    00036
    00037 namespace vl
    00038 {
    00039   //------------------------------------------------------------------------------
    00040   // RenderQueue
    00041   //------------------------------------------------------------------------------
    00045   class RenderQueue: public Object
    00046   {
    00047     VL_INSTRUMENT_CLASS(vl::RenderQueue, Object)
    00048
    00049   public:
    00050     RenderQueue(): mSize(0), mSizeMP(0)
    00051     {
    00052       VL_DEBUG_SET_OBJECT_NAME()
    00053       mList.reserve(100);
    00054       mListMP.reserve(100);
    00055     }
    00056
    00057     const RenderToken* at(int i) const { return mList[i].get(); }
    00058
    00059     RenderToken* at(int i) { return mList[i].get(); }
    00060
    00061     RenderToken* newToken(bool multipass)
    00062     {
    00063       if (multipass)
    00064       {
    00065         ++mSizeMP;
    00066         if ( mSizeMP > (int)mListMP.size() )
    00067           mListMP.push_back( new RenderToken );
    00068         return mListMP[mSizeMP-1].get();
    00069       }
    00070       else
    00071       {
    00072         ++mSize;
    00073         if ( mSize > (int)mList.size() )
    00074           mList.push_back( new RenderToken );
    00075         return mList[mSize-1].get();
    00076       }
    00077     }
    00078
    00079     void clear()
    00080     {
    00081       mSize   = 0;
    00082       mSizeMP = 0;
    00083     }
    00084
    00085     bool empty()
    00086     {
    00087       return mSize == 0;
    00088     }
    00089
    00090     int size() const
    00091     {
    00092       return mSize;
    00093     }
    00094
    00095     void sort(RenderQueueSorter* sorter, Camera* camera)
    00096     {
    00097       if (sorter->mightNeedZCameraDistance())
    00098       {
    00099         for(int i=0; i<size(); ++i)
    00100         {
    00101           RenderToken* tok = at(i);
    00102           vec3 center = tok->mRenderable->boundingBox().isNull() ? vec3(0,0,0) : tok->mRenderable->boundingBox().center();
    00103           if ( sorter->confirmZCameraDistanceNeed(tok) )
    00104           {
    00105             if (tok->mActor->transform())
    00106               // tok->mCameraDistance = ( camera->viewMatrix() * (tok->mActor->transform()->worldMatrix() * center) ).lengthSquared();
    00107               tok->mCameraDistance = -( camera->viewMatrix() * (tok->mActor->transform()->worldMatrix() * center) ).z();
    00108             else
    00109               // tok->mCameraDistance = ( camera->viewMatrix() * /* I* */ center ).lengthSquared();
    00110               tok->mCameraDistance = -( camera->viewMatrix() * /* I* */ center ).z();
    00111           }
    00112           else
    00113             tok->mCameraDistance = 0;
    00114         }
    00115       }
    00116
    00117       VL_CHECK( sorter )
    00118       std::sort( mList.begin(), mList.begin() + size(), Sorter( sorter ) );
    00119     }
    00120
    00121   private:
    00122     class Sorter
    00123     {
    00124     public:
    00125       Sorter(const RenderQueueSorter* sorter): mRenderQueueSorter(sorter) {}
    00126       bool operator()(const ref<RenderToken>& a, const ref<RenderToken>& b) const
    00127       {
    00128         VL_CHECK(a && b);
    00129         return mRenderQueueSorter->operator()(a.get(), b.get());
    00130       }
    00131     protected:
    00132       const RenderQueueSorter* mRenderQueueSorter;
    00133     };
    00134
    00135   protected:
    00136     std::vector< ref<RenderToken> > mList;
    00137     std::vector< ref<RenderToken> > mListMP;
    00138     int mSize;
    00139     int mSizeMP;
    00140   };
    00141   //------------------------------------------------------------------------------
    00142   typedef std::map< float, ref<RenderQueue> > TRenderQueueMap;
    00143   //------------------------------------------------------------------------------
    00144 }
    00145
    00146 #endif

Visualization Library v2011.09.1162 Reference Documentation
Copyright 2005-2011 Michele Bosi. All rights reserved.
Updated on Thu Jan 26 2012 00:43:42.
Permission is granted to use this page to write and publish articles regarding Visualization Library.