66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file ringEmitter.h
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* @author charles
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* @date 2000-06-22
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*/
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#ifndef RINGEMITTER_H
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#define RINGEMITTER_H
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#include "baseParticleEmitter.h"
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/**
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* Describes a planar ring region in which particles are generated.
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*/
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class EXPCL_PANDA_PARTICLESYSTEM RingEmitter : public BaseParticleEmitter {
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PUBLISHED:
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RingEmitter();
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RingEmitter(const RingEmitter ©);
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virtual ~RingEmitter();
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virtual BaseParticleEmitter *make_copy();
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INLINE void set_radius(PN_stdfloat r);
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INLINE void set_angle(PN_stdfloat angle);
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INLINE void set_radius_spread(PN_stdfloat spread);
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INLINE void set_uniform_emission(int uniform_emission);
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INLINE PN_stdfloat get_radius() const;
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INLINE PN_stdfloat get_angle() const;
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INLINE PN_stdfloat get_radius_spread() const;
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INLINE int get_uniform_emission() const;
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virtual void output(std::ostream &out) const;
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virtual void write(std::ostream &out, int indent=0) const;
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protected:
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PN_stdfloat _radius;
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PN_stdfloat _radius_spread;
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// CUSTOM EMISSION PARAMETERS
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PN_stdfloat _aoe; // angle of elevation
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// viariables used for uniform particle emission
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int _uniform_emission;
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PN_stdfloat _theta;
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// scratch variables that carry over from position calc to velocity calc
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PN_stdfloat _sin_theta;
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PN_stdfloat _cos_theta;
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private:
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virtual void assign_initial_position(LPoint3& pos);
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virtual void assign_initial_velocity(LVector3& vel);
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};
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#include "ringEmitter.I"
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#endif // RINGEMITTER_H
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