120 lines
3.9 KiB
C++
120 lines
3.9 KiB
C++
// Filename: lineEmitter.cxx
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// Created by: charles (22Jun00)
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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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#include "lineEmitter.h"
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////////////////////////////////////////////////////////////////////
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// Function : LineEmitter
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// Access : Public
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// Description : constructor
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////////////////////////////////////////////////////////////////////
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LineEmitter::
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LineEmitter() :
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BaseParticleEmitter() {
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_endpoint1.set(1.0f, 0.0f, 0.0f);
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_endpoint2.set(0.0f, 0.0f, 0.0f);
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}
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////////////////////////////////////////////////////////////////////
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// Function : LineEmitter
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// Access : Public
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// Description : constructor
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////////////////////////////////////////////////////////////////////
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LineEmitter::
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LineEmitter(const LineEmitter ©) :
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BaseParticleEmitter(copy) {
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_endpoint1 = copy._endpoint1;
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_endpoint2 = copy._endpoint2;
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}
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////////////////////////////////////////////////////////////////////
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// Function : ~LineEmitter
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// Access : Public
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// Description : constructor
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////////////////////////////////////////////////////////////////////
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LineEmitter::
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~LineEmitter() {
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}
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////////////////////////////////////////////////////////////////////
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// Function : make_copy
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// Access : Public
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// Description : copier
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////////////////////////////////////////////////////////////////////
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BaseParticleEmitter *LineEmitter::
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make_copy() {
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return new LineEmitter(*this);
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}
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////////////////////////////////////////////////////////////////////
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// Function : LineEmitter::assign_initial_position
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// Access : Public
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// Description : Generates a location for a new particle
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////////////////////////////////////////////////////////////////////
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void LineEmitter::
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assign_initial_position(LPoint3f& pos) {
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float t = NORMALIZED_RAND();
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LVector3f v_diff = _endpoint2 - _endpoint1;
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float lerp_x = _endpoint1[0] + t * v_diff[0];
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float lerp_y = _endpoint1[1] + t * v_diff[1];
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float lerp_z = _endpoint1[2] + t * 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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// Function : LineEmitter::assign_initial_velocity
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// Access : Public
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// Description : Generates a velocity for a new particle
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////////////////////////////////////////////////////////////////////
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void LineEmitter::
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assign_initial_velocity(LVector3f& vel) {
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vel.set(0,0,0);
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}
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////////////////////////////////////////////////////////////////////
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// Function : output
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// Access : Public
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// Description : Write a string representation of this instance to
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// <out>.
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////////////////////////////////////////////////////////////////////
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void LineEmitter::
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output(ostream &out) const {
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#ifndef NDEBUG //[
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out<<"LineEmitter";
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#endif //] NDEBUG
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}
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////////////////////////////////////////////////////////////////////
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// Function : write
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// Access : Public
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// Description : Write a string representation of this instance to
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// <out>.
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////////////////////////////////////////////////////////////////////
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void LineEmitter::
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write(ostream &out, int indent) const {
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#ifndef NDEBUG //[
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out.width(indent); out<<""; out<<"LineEmitter:\n";
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out.width(indent+2); out<<""; out<<"_endpoint1 "<<_endpoint1<<"\n";
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out.width(indent+2); out<<""; out<<"_endpoint2 "<<_endpoint2<<"\n";
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BaseParticleEmitter::write(out, indent+2);
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#endif //] NDEBUG
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}
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