[1] | 1 | /* |
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| 2 | ----------------------------------------------------------------------------- |
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| 3 | This source file is part of OGRE |
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| 4 | (Object-oriented Graphics Rendering Engine) |
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| 5 | For the latest info, see http://www.ogre3d.org/ |
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| 6 | |
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| 7 | Copyright ) 2002 Tels <http://bloodgate.com> based on BoxEmitter |
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| 8 | Also see acknowledgements in Readme.html |
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| 9 | |
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| 10 | This program is free software; you can redistribute it and/or modify it under |
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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| 12 | Foundation; either version 2 of the License, or (at your option) any later |
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| 13 | version. |
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| 14 | |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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| 18 | |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with |
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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| 22 | http://www.gnu.org/copyleft/lesser.txt. |
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| 23 | |
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| 24 | You may alternatively use this source under the terms of a specific version of |
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| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
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| 26 | Torus Knot Software Ltd. |
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| 27 | ----------------------------------------------------------------------------- |
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| 28 | */ |
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| 29 | #ifndef __RingEmitter_H__ |
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| 30 | #define __RingEmitter_H__ |
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| 31 | |
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| 32 | #include "OgreParticleFXPrerequisites.h" |
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| 33 | #include "OgreAreaEmitter.h" |
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| 34 | #include "OgreMath.h" |
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| 35 | |
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| 36 | namespace Ogre { |
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| 37 | |
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| 38 | /** Particle emitter which emits particles randomly from points inside a ring (e.g. a tube). |
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| 39 | @remarks |
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| 40 | This particle emitter emits particles from a ring-shaped area. |
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| 41 | The initial direction of these particles can either be a single |
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| 42 | direction (i.e. a line), a random scattering inside a cone, or a random |
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| 43 | scattering in all directions, depending the 'angle' parameter, which |
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| 44 | is the angle across which to scatter the particles either side of the |
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| 45 | base direction of the emitter. |
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| 46 | */ |
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| 47 | class _OgreParticleFXExport RingEmitter : public AreaEmitter |
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| 48 | { |
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| 49 | public: |
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| 50 | // See AreaEmitter |
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| 51 | /** Command object for inner size (see ParamCommand).*/ |
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| 52 | class CmdInnerX : public ParamCommand |
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| 53 | { |
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| 54 | public: |
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| 55 | String doGet(const void* target) const; |
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| 56 | void doSet(void* target, const String& val); |
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| 57 | }; |
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| 58 | /** Command object for inner size (see ParamCommand).*/ |
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| 59 | class CmdInnerY : public ParamCommand |
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| 60 | { |
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| 61 | public: |
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| 62 | String doGet(const void* target) const; |
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| 63 | void doSet(void* target, const String& val); |
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| 64 | }; |
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| 65 | |
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| 66 | RingEmitter(ParticleSystem* psys); |
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| 67 | |
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| 68 | /** See ParticleEmitter. */ |
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| 69 | void _initParticle(Particle* pParticle); |
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| 70 | |
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| 71 | /** Sets the size of the clear space inside the area from where NO particles are emitted. |
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| 72 | @param x,y,z |
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| 73 | Parametric values describing the proportion of the shape which is hollow in each direction. |
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| 74 | E.g. 0 is solid, 0.5 is half-hollow etc |
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| 75 | */ |
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| 76 | void setInnerSize(Real x, Real y); |
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| 77 | |
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| 78 | /** Sets the x component of the area inside the ellipsoid which doesn't emit particles. |
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| 79 | @param x |
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| 80 | Parametric value describing the proportion of the shape which is hollow in this direction. |
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| 81 | E.g. 0 is solid, 0.5 is half-hollow etc |
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| 82 | */ |
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| 83 | void setInnerSizeX(Real x); |
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| 84 | /** Sets the y component of the area inside the ellipsoid which doesn't emit particles. |
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| 85 | @param y |
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| 86 | Parametric value describing the proportion of the shape which is hollow in this direction. |
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| 87 | E.g. 0 is solid, 0.5 is half-hollow etc |
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| 88 | */ |
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| 89 | void setInnerSizeY(Real y); |
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| 90 | /** Gets the x component of the area inside the ellipsoid which doesn't emit particles. */ |
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| 91 | Real getInnerSizeX(void) const; |
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| 92 | /** Gets the y component of the area inside the ellipsoid which doesn't emit particles. */ |
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| 93 | Real getInnerSizeY(void) const; |
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| 94 | |
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| 95 | protected: |
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| 96 | // See ParticleEmitter |
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| 97 | static CmdInnerX msCmdInnerX; |
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| 98 | static CmdInnerY msCmdInnerY; |
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| 99 | |
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| 100 | /// Size of 'clear' center area (> 0 and < 1.0) |
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| 101 | Real mInnerSizex; |
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| 102 | Real mInnerSizey; |
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| 103 | |
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| 104 | |
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| 105 | |
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| 106 | }; |
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| 107 | |
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| 108 | } |
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| 109 | |
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| 110 | #endif |
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| 111 | |
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