# OgreRibbonTrail.h

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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004 (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright (c) 2000-2006 Torus Knot Software Ltd
    00008 Also see acknowledgements in Readme.html
    00009
    00010 This program is free software; you can redistribute it and/or modify it under
    00011 the terms of the GNU Lesser General Public License as published by the Free Software
    00012 Foundation; either version 2 of the License, or (at your option) any later
    00013 version.
    00014
    00015 This program is distributed in the hope that it will be useful, but WITHOUT
    00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
    00018
    00019 You should have received a copy of the GNU Lesser General Public License along with
    00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
    00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
    00022 http://www.gnu.org/copyleft/lesser.txt.
    00023
    00024 You may alternatively use this source under the terms of a specific version of
    00025 the OGRE Unrestricted License provided you have obtained such a license from
    00026 Torus Knot Software Ltd.
    00027 -----------------------------------------------------------------------------
    00028 */
    00029
    00030 #ifndef __RibbonTrail_H__
    00031 #define __RibbonTrail_H__
    00032
    00033 #include "OgrePrerequisites.h"
    00034
    00035 #include "OgreBillboardChain.h"
    00036 #include "OgreNode.h"
    00037 #include "OgreIteratorWrappers.h"
    00038 #include "OgreFrameListener.h"
    00039 #include "OgreControllerManager.h"
    00040
    00041 namespace Ogre {
    00042
    00065     class _OgreExport RibbonTrail : public BillboardChain, public Node::Listener
    00066     {
    00067     public:
    00077         RibbonTrail(const String& name, size_t maxElements = 20, size_t numberOfChains = 1,
    00078             bool useTextureCoords = true, bool useColours = true);
    00080         virtual ~RibbonTrail();
    00081
    00082         typedef std::vector<Node*> NodeList;
    00083         typedef ConstVectorIterator<NodeList> NodeIterator;
    00084
    00088         virtual void addNode(Node* n);
    00090         virtual void removeNode(Node* n);
    00092         virtual NodeIterator getNodeIterator(void) const;
    00094         virtual size_t getChainIndexForNode(const Node* n);
    00095
    00102         virtual void setTrailLength(Real len);
    00104         virtual Real getTrailLength(void) const { return mTrailLength; }
    00105
    00107         void setMaxChainElements(size_t maxElements);
    00109         void setNumberOfChains(size_t numChains);
    00111         void clearChain(size_t chainIndex);
    00112
    00119         virtual void setInitialColour(size_t chainIndex, const ColourValue& col);
    00126         virtual void setInitialColour(size_t chainIndex, Real r, Real g, Real b, Real a = 1.0);
    00128         virtual const ColourValue& getInitialColour(size_t chainIndex) const;
    00129
    00134         virtual void setColourChange(size_t chainIndex, const ColourValue& valuePerSecond);
    00135
    00140         virtual void setInitialWidth(size_t chainIndex, Real width);
    00142         virtual Real getInitialWidth(size_t chainIndex) const;
    00143
    00148         virtual void setWidthChange(size_t chainIndex, Real widthDeltaPerSecond);
    00150         virtual Real getWidthChange(size_t chainIndex) const;
    00151
    00156         virtual void setColourChange(size_t chainIndex, Real r, Real g, Real b, Real a);
    00157
    00159         virtual const ColourValue& getColourChange(size_t chainIndex) const;
    00160
    00162         void nodeUpdated(const Node* node);
    00164         void nodeDestroyed(const Node* node);
    00165
    00167         virtual void _timeUpdate(Real time);
    00168
    00170         const String& getMovableType(void) const;
    00171
    00172     protected:
    00174         NodeList mNodeList;
    00176         typedef std::vector<size_t> IndexVector;
    00178         IndexVector mNodeToChainSegment;
    00179         // chains not in use
    00180         IndexVector mFreeChains;
    00181
    00182         // fast lookup node->chain index
    00183         // we use positional map too because that can be useful
    00184         typedef std::map<const Node*, size_t> NodeToChainSegmentMap;
    00185         NodeToChainSegmentMap mNodeToSegMap;
    00186
    00188         Real mTrailLength;
    00190         Real mElemLength;
    00192         Real mSquaredElemLength;
    00193         typedef std::vector<ColourValue> ColourValueList;
    00194         typedef std::vector<Real> RealList;
    00196         ColourValueList mInitialColour;
    00198         ColourValueList mDeltaColour;
    00200         RealList mInitialWidth;
    00202         RealList mDeltaWidth;
    00204         Controller<Real>* mFadeController;
    00206         ControllerValueRealPtr mTimeControllerValue;
    00207
    00209         virtual void manageController(void);
    00211         virtual void updateTrail(size_t index, const Node* node);
    00213         virtual void resetTrail(size_t index, const Node* node);
    00215         virtual void resetAllTrails(void);
    00216
    00217     };
    00218
    00219
    00221     class _OgreExport RibbonTrailFactory : public MovableObjectFactory
    00222     {
    00223     protected:
    00224         MovableObject* createInstanceImpl( const String& name, const NameValuePairList* params);
    00225     public:
    00226         RibbonTrailFactory() {}
    00227         ~RibbonTrailFactory() {}
    00228
    00229         static String FACTORY_TYPE_NAME;
    00230
    00231         const String& getType(void) const;
    00232         void destroyInstance( MovableObject* obj);
    00233
    00234     };
    00235
    00236 }
    00237
    00238 #endif

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Dec 27 17:31:07 2009