77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
// Filename: baseParticleEmitter.C
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// Created by: charles (14Jun00)
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//
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////////////////////////////////////////////////////////////////////
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#include "baseParticleEmitter.h"
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#include <stdlib.h>
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////////////////////////////////////////////////////////////////////
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// Function : BaseParticleEmitter
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// Access : Protected
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// Description : constructor
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////////////////////////////////////////////////////////////////////
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BaseParticleEmitter::
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BaseParticleEmitter(void) {
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_emission_type = ET_RADIATE;
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_explicit_launch_vector.set(1,0,0);
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_radiate_origin.set(0,0,0);
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_amplitude = 1.0f;
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_amplitude_spread = 0.0f;
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_offset_force.set(0,0,0);
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}
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////////////////////////////////////////////////////////////////////
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// Function : BaseParticleEmitter
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// Access : Protected
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// Description : copy constructor
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////////////////////////////////////////////////////////////////////
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BaseParticleEmitter::
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BaseParticleEmitter(const BaseParticleEmitter ©) {
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_emission_type = copy._emission_type;
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_explicit_launch_vector = copy._explicit_launch_vector;
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_radiate_origin = copy._radiate_origin;
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_amplitude = copy._amplitude;
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_amplitude_spread = copy._amplitude_spread;
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_offset_force = copy._offset_force;
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}
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////////////////////////////////////////////////////////////////////
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// Function : BaseParticleEmitter
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// Access : Protected
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// Description : destructor
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////////////////////////////////////////////////////////////////////
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BaseParticleEmitter::
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~BaseParticleEmitter(void) {
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}
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////////////////////////////////////////////////////////////////////
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// Function : generate
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// Access : Public
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// Description : parent generation function
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////////////////////////////////////////////////////////////////////
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void BaseParticleEmitter::
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generate(LPoint3f& pos, LVector3f& vel) {
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assign_initial_position(pos);
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switch(_emission_type)
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{
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case ET_EXPLICIT:
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vel = _explicit_launch_vector;
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break;
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case ET_RADIATE:
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vel = pos - _radiate_origin;
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vel.normalize();
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break;
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case ET_CUSTOM:
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assign_initial_velocity(vel);
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break;
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}
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vel *= _amplitude + SPREAD(_amplitude_spread);
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vel += _offset_force;
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}
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