# Visualization Library

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

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# D:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlGraphics/SceneManager.cpp

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    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 #include <vlGraphics/SceneManager.hpp>
    00033 #include <vlGraphics/Actor.hpp>
    00034 #include <vlGraphics/Camera.hpp>
    00035 #include <vlGraphics/Effect.hpp>
    00036 #include <vlGraphics/Scissor.hpp>
    00037 #include <vlGraphics/Texture.hpp>
    00038 #include <vlCore/Image.hpp>
    00039
    00040 using namespace vl;
    00041
    00042 //-----------------------------------------------------------------------------
    00043 SceneManager::SceneManager()
    00044 {
    00045   VL_DEBUG_SET_OBJECT_NAME()
    00046   // mActors = new ActorCollection;
    00047   mBoundsDirty = true;
    00048   mCullingEnabled = true;
    00049   mEnableMask = 0xFFFFFFFF;
    00050 }
    00051 //-----------------------------------------------------------------------------
    00052 void SceneManager::computeBounds()
    00053 {
    00054   ActorCollection actors;
    00055   extractActors(actors);
    00056
    00057   AABB bbox;
    00058   bbox.setNull();
    00059   for(int i=0; i<actors.size(); ++i)
    00060   {
    00061     actors.at(i)->computeBounds();
    00062     bbox += actors.at(i)->boundingBox();
    00063   }
    00064   setBoundingBox(bbox);
    00065
    00066   // better method
    00067   Sphere sphere;
    00068   real radius = real(-1.0);
    00069   for(int i=0; i<actors.size(); ++i)
    00070   {
    00071     if (actors.at(i)->boundingSphere().isNull())
    00072       continue;
    00073     real r = (actors.at(i)->boundingSphere().center() - boundingBox().center()).length() + actors.at(i)->boundingSphere().radius();
    00074     if (r > radius)
    00075       radius = r;
    00076   }
    00077   sphere.setCenter(boundingBox().center());
    00078   sphere.setRadius(radius);
    00079   setBoundingSphere(sphere);
    00080
    00081   setBoundsDirty(false);
    00082 }
    00083 //-----------------------------------------------------------------------------
    00084 bool SceneManager::isEnabled(Actor*a) const
    00085 {
    00086   return (a->enableMask() & enableMask()) != 0;
    00087 }
    00088 //-----------------------------------------------------------------------------

Visualization Library v2011.09.1162 Reference Documentation
Copyright 2005-2011 Michele Bosi. All rights reserved.
Updated on Thu Jan 26 2012 00:43:42.
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