OgreRibbonTrail.h
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4 (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
6 
7 Copyright (c) 2000-2013 Torus Knot Software Ltd
8 
9 Permission is hereby granted, free of charge, to any person obtaining a copy
10 of this software and associated documentation files (the "Software"), to deal
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28 
29 #ifndef __RibbonTrail_H__
30 #define __RibbonTrail_H__
31 
32 #include "OgrePrerequisites.h"
33 
34 #include "OgreBillboardChain.h"
35 #include "OgreNode.h"
36 #include "OgreIteratorWrappers.h"
37 #include "OgreFrameListener.h"
38 #include "OgreControllerManager.h"
39 #include "OgreHeaderPrefix.h"
40 
41 namespace Ogre {
42 
72  {
73  public:
83  RibbonTrail(const String& name, size_t maxElements = 20, size_t numberOfChains = 1,
84  bool useTextureCoords = true, bool useVertexColours = true);
86  virtual ~RibbonTrail();
87 
90 
94  virtual void addNode(Node* n);
96  virtual void removeNode(Node* n);
98  virtual NodeIterator getNodeIterator(void) const;
100  virtual size_t getChainIndexForNode(const Node* n);
101 
108  virtual void setTrailLength(Real len);
110  virtual Real getTrailLength(void) const { return mTrailLength; }
111 
113  void setMaxChainElements(size_t maxElements);
115  void setNumberOfChains(size_t numChains);
117  void clearChain(size_t chainIndex);
118 
125  virtual void setInitialColour(size_t chainIndex, const ColourValue& col);
132  virtual void setInitialColour(size_t chainIndex, Real r, Real g, Real b, Real a = 1.0);
134  virtual const ColourValue& getInitialColour(size_t chainIndex) const;
135 
140  virtual void setColourChange(size_t chainIndex, const ColourValue& valuePerSecond);
141 
146  virtual void setInitialWidth(size_t chainIndex, Real width);
148  virtual Real getInitialWidth(size_t chainIndex) const;
149 
154  virtual void setWidthChange(size_t chainIndex, Real widthDeltaPerSecond);
156  virtual Real getWidthChange(size_t chainIndex) const;
157 
162  virtual void setColourChange(size_t chainIndex, Real r, Real g, Real b, Real a);
163 
165  virtual const ColourValue& getColourChange(size_t chainIndex) const;
166 
168  void nodeUpdated(const Node* node);
170  void nodeDestroyed(const Node* node);
171 
173  virtual void _timeUpdate(Real time);
174 
176  const String& getMovableType(void) const;
177 
178  protected:
185  // chains not in use
187 
188  // fast lookup node->chain index
189  // we use positional map too because that can be useful
192 
213 
215  virtual void manageController(void);
217  virtual void updateTrail(size_t index, const Node* node);
219  virtual void resetTrail(size_t index, const Node* node);
221  virtual void resetAllTrails(void);
222 
223  };
224 
225 
228  {
229  protected:
231  public:
234 
236 
237  const String& getType(void) const;
239 
240  };
244 }
245 
246 #include "OgreHeaderSuffix.h"
247 
248 #endif
#define _OgreExport
Definition: OgrePlatform.h:257
Allows the rendering of a chain of connected billboards.
Class representing colour.
Concrete IteratorWrapper for const access to the underlying container.
Interface definition for a factory class which produces a certain kind of MovableObject,...
Abstract class defining a movable object in a scene.
Listener which gets called back on Node events.
Definition: OgreNode.h:85
Class representing a general-purpose node an articulated scene graph.
Definition: OgreNode.h:65
Factory object for creating RibbonTrail instances.
static String FACTORY_TYPE_NAME
const String & getType(void) const
Get the type of the object to be created.
void destroyInstance(MovableObject *obj)
Destroy an instance of the object.
MovableObject * createInstanceImpl(const String &name, const NameValuePairList *params)
Internal implementation of create method - must be overridden.
Subclass of BillboardChain which automatically leaves a trail behind one or more Node instances.
virtual void setTrailLength(Real len)
Set the length of the trail.
ControllerValueRealPtr mTimeControllerValue
controller value for hooking up frame time to fader
virtual Real getInitialWidth(size_t chainIndex) const
Get the starting ribbon width in world units.
ColourValueList mDeltaColour
fade amount per second
void nodeUpdated(const Node *node)
virtual const ColourValue & getInitialColour(size_t chainIndex) const
Get the starting ribbon colour.
virtual void setInitialColour(size_t chainIndex, Real r, Real g, Real b, Real a=1.0)
Set the starting ribbon colour.
vector< Node * >::type NodeList
virtual void resetAllTrails(void)
Reset all tracked chains to initial state.
const String & getMovableType(void) const
Overridden from MovableObject.
map< const Node *, size_t >::type NodeToChainSegmentMap
Real mTrailLength
Total length of trail in world units.
void nodeDestroyed(const Node *node)
vector< Real >::type RealList
void clearChain(size_t chainIndex)
Remove all elements of a given chain (but leave the chain intact).
vector< size_t >::type IndexVector
Mapping of nodes to chain segments.
void setMaxChainElements(size_t maxElements)
Set the maximum number of chain elements per chain.
RealList mDeltaWidth
Delta width of the ribbon.
RibbonTrail(const String &name, size_t maxElements=20, size_t numberOfChains=1, bool useTextureCoords=true, bool useVertexColours=true)
Constructor (don't use directly, use factory)
virtual Real getTrailLength(void) const
Get the length of the trail.
virtual void setWidthChange(size_t chainIndex, Real widthDeltaPerSecond)
Set the change in ribbon width per second.
ColourValueList mInitialColour
Initial colour of the ribbon.
NodeToChainSegmentMap mNodeToSegMap
virtual ~RibbonTrail()
destructor
virtual void updateTrail(size_t index, const Node *node)
Node has changed position, update.
IndexVector mFreeChains
virtual void setInitialWidth(size_t chainIndex, Real width)
Set the starting ribbon width in world units.
virtual size_t getChainIndexForNode(const Node *n)
Get the chain index for a given Node being tracked.
virtual void removeNode(Node *n)
Remove tracking on a given node.
Controller< Real > * mFadeController
controller used to hook up frame time to fader
virtual NodeIterator getNodeIterator(void) const
Get an iterator over the nodes which are being tracked.
virtual void setColourChange(size_t chainIndex, const ColourValue &valuePerSecond)
Enables / disables fading the trail using colour.
virtual void setColourChange(size_t chainIndex, Real r, Real g, Real b, Real a)
Enables / disables fading the trail using colour.
vector< ColourValue >::type ColourValueList
ConstVectorIterator< NodeList > NodeIterator
virtual void manageController(void)
Manage updates to the time controller.
virtual void _timeUpdate(Real time)
Perform any fading / width delta required; internal method.
virtual void addNode(Node *n)
Add a node to be tracked.
void setNumberOfChains(size_t numChains)
Set the number of chain segments (this class can render multiple chains at once using the same materi...
Real mElemLength
length of each element
virtual void setInitialColour(size_t chainIndex, const ColourValue &col)
Set the starting ribbon colour for a given segment.
RealList mInitialWidth
Initial width of the ribbon.
virtual const ColourValue & getColourChange(size_t chainIndex) const
Get the per-second fading amount.
virtual void resetTrail(size_t index, const Node *node)
Reset the tracked chain to initial state.
IndexVector mNodeToChainSegment
Ordered like mNodeList, contains chain index.
NodeList mNodeList
List of nodes being trailed.
Real mSquaredElemLength
Squared length of each element.
virtual Real getWidthChange(size_t chainIndex) const
Get the change in ribbon width per second.
map< String, String >::type NameValuePairList
Name / value parameter pair (first = name, second = value)
Definition: OgreCommon.h:550
float Real
Software floating point type.
_StringBase String

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