source: OGRE/trunk/ogrenew/PlugIns/ParticleFX/include/OgreRingEmitter.h @ 657

Revision 657, 4.1 KB checked in by mattausch, 19 years ago (diff)

added ogre dependencies and patched ogre sources

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