83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
// Filename: linearNoiseForce.h
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// Created by: charles (13Jun00)
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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 - 2004, 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://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef LINEARNOISEFORCE_H
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#define LINEARNOISEFORCE_H
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#include "pandabase.h"
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#include "linearRandomForce.h"
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#include "configVariableInt.h"
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////////////////////////////////////////////////////////////////////
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// Class : LinearNoiseForce
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// Description : Repeating noise force vector.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDAPHYSICS LinearNoiseForce : public LinearRandomForce {
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PUBLISHED:
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LinearNoiseForce(float a = 1.0f, bool m = false);
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LinearNoiseForce(const LinearNoiseForce ©);
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virtual ~LinearNoiseForce();
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virtual void output(ostream &out) const;
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virtual void write(ostream &out, unsigned int indent=0) const;
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public:
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static ConfigVariableInt _random_seed;
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static void init_noise_tables();
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private:
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static unsigned char _prn_table[256];
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static LVector3f _gradient_table[256];
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static bool _initialized;
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INLINE float cubic_step(const float x) const;
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INLINE LVector3f vlerp(const float t, const LVector3f& v0, const LVector3f& v1) const;
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INLINE unsigned char get_prn_entry(const LPoint3f& point) const;
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INLINE unsigned char get_prn_entry(const float x, const float y, const float z) const;
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INLINE LVector3f& get_lattice_entry(const LPoint3f& point);
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INLINE LVector3f& get_lattice_entry(const float x, const float y, const float z);
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INLINE unsigned char prn_lookup(int index) const;
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virtual LVector3f get_child_vector(const PhysicsObject *po);
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virtual LinearForce *make_copy();
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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LinearRandomForce::init_type();
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register_type(_type_handle, "LinearNoiseForce",
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LinearRandomForce::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "linearNoiseForce.I"
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#endif // LINEARNOISEFORCE_H
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