Panda3D

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baseParticleRenderer.h
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file baseParticleRenderer.h
10 * @author charles
11 * @date 2000-06-20
12 */
13
14#ifndef BASEPARTICLERENDERER_H
15#define BASEPARTICLERENDERER_H
16
17#include "pandabase.h"
18#include "referenceCount.h"
19#include "physicsObject.h"
20#include "renderState.h"
21#include "geomNode.h"
22#include "colorBlendAttrib.h"
23#include "nodePath.h"
24#include "particleCommonFuncs.h"
25#include "baseParticle.h"
26
27#include "pvector.h"
28
29/**
30 * Pure virtual particle renderer base class
31 */
32 class EXPCL_PANDA_PARTICLESYSTEM BaseParticleRenderer : public ReferenceCount {
33PUBLISHED:
34 enum ParticleRendererAlphaMode {
35 PR_ALPHA_NONE,
36 PR_ALPHA_OUT,
37 PR_ALPHA_IN,
38 PR_ALPHA_IN_OUT,
39 PR_ALPHA_USER,
40 PR_NOT_INITIALIZED_YET
41 };
42
43 enum ParticleRendererBlendMethod {
44 PP_NO_BLEND,
45 PP_BLEND_LINEAR,
46 PP_BLEND_CUBIC
47 };
48
49 virtual ~BaseParticleRenderer();
50
51 INLINE GeomNode *get_render_node() const;
52 INLINE NodePath get_render_node_path() const;
53
54 INLINE void set_alpha_mode(ParticleRendererAlphaMode am);
55 INLINE ParticleRendererAlphaMode get_alpha_mode() const;
56
57 INLINE void set_user_alpha(PN_stdfloat ua);
58 INLINE PN_stdfloat get_user_alpha() const;
59
60 INLINE void set_color_blend_mode(ColorBlendAttrib::Mode bm, ColorBlendAttrib::Operand oa = ColorBlendAttrib::O_zero, ColorBlendAttrib::Operand ob = ColorBlendAttrib::O_zero);
61
62 void set_ignore_scale(bool ignore_scale);
63 INLINE bool get_ignore_scale() const;
64
65 virtual void output(std::ostream &out) const;
66 virtual void write(std::ostream &out, int indent=0) const;
67
68 public:
69 virtual BaseParticleRenderer *make_copy() = 0;
70
71 protected:
72 ParticleRendererAlphaMode _alpha_mode;
73
74 BaseParticleRenderer(ParticleRendererAlphaMode alpha_decay = PR_ALPHA_NONE);
75 BaseParticleRenderer(const BaseParticleRenderer& copy);
76
77 void update_alpha_mode(ParticleRendererAlphaMode am);
78
79 void enable_alpha();
80 void disable_alpha();
81
82 INLINE PN_stdfloat get_cur_alpha(BaseParticle* bp);
83
84 virtual void resize_pool(int new_size) = 0;
85
86 CPT(RenderState) _render_state;
87
88 private:
89 PT(GeomNode) _render_node;
90 NodePath _render_node_path;
91
92 PN_stdfloat _user_alpha;
93 bool _ignore_scale;
94
95 // birth and kill particle are for renderers that might do maintenance
96 // faster if it was notified on a per-event basis. An example:
97 // geomParticleRenderer maintains an arc for every particle. Instead of
98 // visiting EVERY entry in the arc array, individual arcs are changed on
99 // birth and death. Brings it down a little from O(N) every update.
100
101 virtual void birth_particle(int index) = 0;
102 virtual void kill_particle(int index) = 0;
103
104
105 virtual void init_geoms() = 0;
106 virtual void render(pvector< PT(PhysicsObject) >& po_vector,
107 int ttl_particles) = 0;
108
109 friend class ParticleSystem;
110};
111
112#include "baseParticleRenderer.I"
113
114#endif // BASEPARTICLERENDERER_H
baseParticleRenderer.I
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
baseParticle.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
BaseParticleRenderer::get_render_node
GeomNode * get_render_node() const
Query the geomnode pointer.
Definition baseParticleRenderer.I:18
BaseParticleRenderer::get_render_node_path
NodePath get_render_node_path() const
Query the geomnode pointer.
Definition baseParticleRenderer.I:26
BaseParticleRenderer::set_color_blend_mode
void set_color_blend_mode(ColorBlendAttrib::Mode bm, ColorBlendAttrib::Operand oa=ColorBlendAttrib::O_zero, ColorBlendAttrib::Operand ob=ColorBlendAttrib::O_zero)
sets the ColorBlendAttrib on the _render_node
Definition baseParticleRenderer.I:67
BaseParticleRenderer::set_ignore_scale
void set_ignore_scale(bool ignore_scale)
Sets the "ignore scale" flag.
Definition baseParticleRenderer.cxx:68
BaseParticleRenderer::get_ignore_scale
bool get_ignore_scale() const
Returns the "ignore scale" flag.
Definition baseParticleRenderer.I:83
BaseParticleRenderer::get_user_alpha
PN_stdfloat get_user_alpha() const
gets alpha for "user" alpha mode
Definition baseParticleRenderer.I:59
BaseParticleRenderer::set_user_alpha
void set_user_alpha(PN_stdfloat ua)
sets alpha for "user" alpha mode
Definition baseParticleRenderer.I:51
BaseParticleRenderer::output
virtual void output(std::ostream &out) const
Write a string representation of this instance to <out>.
Definition baseParticleRenderer.cxx:82
BaseParticleRenderer::write
virtual void write(std::ostream &out, int indent=0) const
Write a string representation of this instance to <out>.
Definition baseParticleRenderer.cxx:92
BaseParticle
An individual, physically-modelable particle abstract base class.
Definition baseParticle.h:23
GeomNode
A node that holds Geom objects, renderable pieces of geometry.
Definition geomNode.h:34
NodePath
NodePath is the fundamental system for disambiguating instances, and also provides a higher-level int...
Definition nodePath.h:159
PhysicsObject
A body on which physics will be applied.
Definition physicsObject.h:27
RenderState
This represents a unique collection of RenderAttrib objects that correspond to a particular renderabl...
Definition renderState.h:47
colorBlendAttrib.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
geomNode.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
indent
std::ostream & indent(std::ostream &out, int indent_level)
A handy function for doing text formatting.
Definition indent.cxx:20
nodePath.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
particleCommonFuncs.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
physicsObject.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pvector.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
referenceCount.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
renderState.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.