Panda3D
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00001 // Filename: baseParticleRenderer.h 00002 // Created by: charles (20Jun00) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef BASEPARTICLERENDERER_H 00016 #define BASEPARTICLERENDERER_H 00017 00018 #include "pandabase.h" 00019 #include "referenceCount.h" 00020 #include "physicsObject.h" 00021 #include "renderState.h" 00022 #include "geomNode.h" 00023 #include "colorBlendAttrib.h" 00024 #include "nodePath.h" 00025 #include "particleCommonFuncs.h" 00026 #include "baseParticle.h" 00027 00028 #include "pvector.h" 00029 00030 //////////////////////////////////////////////////////////////////// 00031 // Class : BaseParticleRenderer 00032 // Description : Pure virtual particle renderer base class 00033 //////////////////////////////////////////////////////////////////// 00034 class EXPCL_PANDAPHYSICS BaseParticleRenderer : public ReferenceCount { 00035 PUBLISHED: 00036 enum ParticleRendererAlphaMode { 00037 PR_ALPHA_NONE, 00038 PR_ALPHA_OUT, 00039 PR_ALPHA_IN, 00040 PR_ALPHA_IN_OUT, 00041 PR_ALPHA_USER, 00042 PR_NOT_INITIALIZED_YET 00043 }; 00044 00045 enum ParticleRendererBlendMethod { 00046 PP_NO_BLEND, 00047 PP_BLEND_LINEAR, 00048 PP_BLEND_CUBIC 00049 }; 00050 00051 virtual ~BaseParticleRenderer(); 00052 00053 INLINE GeomNode *get_render_node() const; 00054 INLINE NodePath get_render_node_path() const; 00055 00056 INLINE void set_alpha_mode(ParticleRendererAlphaMode am); 00057 INLINE ParticleRendererAlphaMode get_alpha_mode() const; 00058 00059 INLINE void set_user_alpha(PN_stdfloat ua); 00060 INLINE PN_stdfloat get_user_alpha() const; 00061 00062 INLINE void set_color_blend_mode(ColorBlendAttrib::Mode bm, ColorBlendAttrib::Operand oa = ColorBlendAttrib::O_zero, ColorBlendAttrib::Operand ob = ColorBlendAttrib::O_zero); 00063 00064 void set_ignore_scale(bool ignore_scale); 00065 INLINE bool get_ignore_scale() const; 00066 00067 virtual void output(ostream &out) const; 00068 virtual void write(ostream &out, int indent=0) const; 00069 00070 public: 00071 virtual BaseParticleRenderer *make_copy() = 0; 00072 00073 protected: 00074 ParticleRendererAlphaMode _alpha_mode; 00075 00076 BaseParticleRenderer(ParticleRendererAlphaMode alpha_decay = PR_ALPHA_NONE); 00077 BaseParticleRenderer(const BaseParticleRenderer& copy); 00078 00079 void update_alpha_mode(ParticleRendererAlphaMode am); 00080 00081 void enable_alpha(); 00082 void disable_alpha(); 00083 00084 INLINE PN_stdfloat get_cur_alpha(BaseParticle* bp); 00085 00086 virtual void resize_pool(int new_size) = 0; 00087 00088 CPT(RenderState) _render_state; 00089 00090 private: 00091 PT(GeomNode) _render_node; 00092 NodePath _render_node_path; 00093 00094 PN_stdfloat _user_alpha; 00095 bool _ignore_scale; 00096 00097 // birth and kill particle are for renderers that might do maintenance 00098 // faster if it was notified on a per-event basis. An example: 00099 // geomParticleRenderer maintains an arc for every particle. Instead 00100 // of visiting EVERY entry in the arc array, individual arcs are 00101 // changed on birth and death. Brings it down a little from O(N) every 00102 // update. 00103 00104 virtual void birth_particle(int index) = 0; 00105 virtual void kill_particle(int index) = 0; 00106 00107 00108 virtual void init_geoms() = 0; 00109 virtual void render(pvector< PT(PhysicsObject) >& po_vector, 00110 int ttl_particles) = 0; 00111 00112 friend class ParticleSystem; 00113 }; 00114 00115 #include "baseParticleRenderer.I" 00116 00117 #endif // BASEPARTICLERENDERER_H 00118