Panda3D
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panda
src
particlesystem
boxEmitter.cxx
Go to the documentation of this file.
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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 boxEmitter.cxx
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* @author charles
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* @date 2000-06-22
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*/
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#include "
boxEmitter.h
"
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/**
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* constructor
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*/
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BoxEmitter::
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BoxEmitter
() :
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BaseParticleEmitter
() {
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_vmin.set(-0.5f, -0.5f, -0.5f);
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_vmax.set( 0.5f, 0.5f, 0.5f);
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}
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/**
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* copy constructor
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*/
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BoxEmitter::
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BoxEmitter
(
const
BoxEmitter
©) :
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BaseParticleEmitter
(copy) {
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_vmin = copy._vmin;
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_vmax = copy._vmax;
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}
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/**
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* destructor
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*/
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BoxEmitter::
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~BoxEmitter
() {
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}
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/**
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* copier
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*/
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BaseParticleEmitter
*
BoxEmitter::
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make_copy
() {
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return
new
BoxEmitter
(*
this
);
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}
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/**
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* Generates a location for a new particle
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*/
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void
BoxEmitter::
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assign_initial_position(LPoint3& pos) {
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PN_stdfloat t_x = NORMALIZED_RAND();
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PN_stdfloat t_y = NORMALIZED_RAND();
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PN_stdfloat t_z = NORMALIZED_RAND();
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LVector3 v_diff = _vmax - _vmin;
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PN_stdfloat lerp_x = _vmin[0] + t_x * v_diff[0];
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PN_stdfloat lerp_y = _vmin[1] + t_y * v_diff[1];
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PN_stdfloat lerp_z = _vmin[2] + t_z * v_diff[2];
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pos.set(lerp_x, lerp_y, lerp_z);
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}
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/**
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* Generates a velocity for a new particle
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*/
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void
BoxEmitter::
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assign_initial_velocity(LVector3& vel) {
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vel.set(0,0,0);
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}
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/**
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* Write a string representation of this instance to <out>.
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*/
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void
BoxEmitter::
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output
(std::ostream &out)
const
{
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#ifndef NDEBUG
//[
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out<<
"BoxEmitter"
;
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#endif
//] NDEBUG
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}
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/**
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* Write a string representation of this instance to <out>.
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*/
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void
BoxEmitter::
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write
(std::ostream &out,
int
indent
)
const
{
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#ifndef NDEBUG
//[
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out.width(
indent
); out<<
""
; out<<
"BoxEmitter:\n"
;
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out.width(
indent
+2); out<<
""
; out<<
"_vmin "
<<_vmin<<
"\n"
;
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out.width(
indent
+2); out<<
""
; out<<
"_vmax "
<<_vmax<<
"\n"
;
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BaseParticleEmitter::write
(out,
indent
+2);
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#endif
//] NDEBUG
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}
boxEmitter.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
BaseParticleEmitter
Definition
baseParticleEmitter.h:25
BaseParticleEmitter::write
virtual void write(std::ostream &out, int indent=0) const
Write a string representation of this instance to <out>.
Definition
baseParticleEmitter.cxx:92
BoxEmitter
Describes a voluminous box region in which particles are generated.
Definition
boxEmitter.h:22
BoxEmitter::write
virtual void write(std::ostream &out, int indent=0) const
Write a string representation of this instance to <out>.
Definition
boxEmitter.cxx:91
BoxEmitter::BoxEmitter
BoxEmitter()
constructor
Definition
boxEmitter.cxx:20
BoxEmitter::make_copy
virtual BaseParticleEmitter * make_copy()
copier
Definition
boxEmitter.cxx:47
BoxEmitter::~BoxEmitter
virtual ~BoxEmitter()
destructor
Definition
boxEmitter.cxx:40
BoxEmitter::output
virtual void output(std::ostream &out) const
Write a string representation of this instance to <out>.
Definition
boxEmitter.cxx:81
indent
std::ostream & indent(std::ostream &out, int indent_level)
A handy function for doing text formatting.
Definition
indent.cxx:20
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