119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
// Filename: baseParticleRenderer.h
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// Created by: charles (20Jun00)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef BASEPARTICLERENDERER_H
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#define BASEPARTICLERENDERER_H
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#include <pandabase.h>
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#include <referenceCount.h>
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#include <physicsObject.h>
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#include <geomNode.h>
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#include <renderRelation.h>
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#include <nodeRelation.h>
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#include <transparencyTransition.h>
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#include "particleCommonFuncs.h"
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#include "baseParticle.h"
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#include "pvector.h"
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////////////////////////////////////////////////////////////////////
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// Class : BaseParticleRenderer
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// Description : Pure virtual particle renderer base class
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDAPHYSICS BaseParticleRenderer : public ReferenceCount {
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private:
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PT(GeomNode) _render_node;
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// children of this class don't know anything about alpha.
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// they should just interact with _interface_node, and link geometry
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// from/to that.
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PT(GeomNode) _alpha_node;
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PT(RenderRelation) _alpha_arc;
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float _user_alpha;
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// birth and kill particle are for renderers that might do maintenance
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// faster if it was notified on a per-event basis. An example:
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// geomParticleRenderer maintains an arc for every particle. Instead
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// of visiting EVERY entry in the arc array, individual arcs are
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// changed on birth and death. Brings it down a little from O(N) every
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// update.
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virtual void birth_particle(int index) = 0;
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virtual void kill_particle(int index) = 0;
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virtual void init_geoms(void) = 0;
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virtual void render(pvector< PT(PhysicsObject) >& po_vector,
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int ttl_particles) = 0;
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PUBLISHED:
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enum ParticleRendererAlphaMode {
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PR_ALPHA_NONE,
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PR_ALPHA_OUT,
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PR_ALPHA_IN,
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PR_ALPHA_USER,
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PR_NOT_INITIALIZED_YET
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};
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enum ParticleRendererBlendMethod {
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PP_NO_BLEND,
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PP_BLEND_LINEAR,
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PP_BLEND_CUBIC
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};
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virtual ~BaseParticleRenderer(void);
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INLINE GeomNode *get_render_node(void) const;
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INLINE void set_alpha_mode(ParticleRendererAlphaMode am);
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INLINE ParticleRendererAlphaMode get_alpha_mode(void) const;
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INLINE void set_user_alpha(float ua);
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INLINE float get_user_alpha(void) const;
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protected:
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GeomNode *_interface_node;
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ParticleRendererAlphaMode _alpha_mode;
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BaseParticleRenderer(ParticleRendererAlphaMode alpha_decay = PR_ALPHA_NONE);
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BaseParticleRenderer(const BaseParticleRenderer& copy);
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void update_alpha_mode(ParticleRendererAlphaMode am);
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void enable_alpha(void);
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INLINE void disable_alpha(void);
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INLINE float get_cur_alpha(BaseParticle* bp);
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virtual void resize_pool(int new_size) = 0;
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public:
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virtual BaseParticleRenderer *make_copy(void) = 0;
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friend class ParticleSystem;
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};
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#include "baseParticleRenderer.I"
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#endif // BASEPARTICLERENDERER_H
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