127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
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//////////////////////////////////////////////////////////////////////////////////
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// SPARK particle engine //
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// Copyright (C) 2008-2009 - Julien Fryer - julienfryer@gmail.com //
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// //
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// This software is provided 'as-is', without any express or implied //
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// warranty. In no event will the authors be held liable for any damages //
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// arising from the use of this software. //
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// //
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// Permission is granted to anyone to use this software for any purpose, //
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// including commercial applications, and to alter it and redistribute it //
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// freely, subject to the following restrictions: //
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// //
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// 1. The origin of this software must not be misrepresented; you must not //
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// claim that you wrote the original software. If you use this software //
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// in a product, an acknowledgment in the product documentation would be //
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// appreciated but is not required. //
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// 2. Altered source versions must be plainly marked as such, and must not be //
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// misrepresented as being the original software. //
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// 3. This notice may not be removed or altered from any source distribution. //
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//////////////////////////////////////////////////////////////////////////////////
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#ifndef H_SPK_STRAIGHEMITTER
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#define H_SPK_STRAIGHEMITTER
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#include "Core/SPK_Emitter.h"
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#include "Core/SPK_Particle.h"
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namespace SPK
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{
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/**
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* @class StraightEmitter
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* @brief An Emitter that emits in a given direction
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*/
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class SPK_PREFIX StraightEmitter : public Emitter
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{
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SPK_IMPLEMENT_REGISTERABLE(StraightEmitter)
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public :
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/////////////////
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// Constructor //
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/////////////////
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/**
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* @brief The constructor of StraightEmitter
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* @param direction : the direction of the StraighEmitter
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*/
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StraightEmitter(const Vector3D& direction = Vector3D(0.0f,0.0f,-1.0f));
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/**
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* @brief Creates and registers a new StraightEmitter
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* @param direction : the direction of the StraighEmitter
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* @since 1.04.00
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*/
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static inline StraightEmitter* create(const Vector3D& direction = Vector3D(0.0f,0.0f,-1.0f));
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/////////////
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// Setters //
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/////////////
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/**
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* @brief Sets the direction of this StraightEmitter
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*
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* Note that it is not necessary to provide a normalized Vector3D.
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* This Vector3D only indicates a direction, its norm does not matter.
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*
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* @param direction : the direction of this StraightEmitter
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*/
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void setDirection(const Vector3D& direction);
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/////////////
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// Getters //
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/////////////
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/**
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* @brief Gets the direction of this StraightEmitter
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* @return the direction of this StraightEmitter
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*/
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inline const Vector3D& getDirection() const;
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/**
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* @brief Gets the transformed direction of this StraightEmitter
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* @return the transformed direction of this StraightEmitter
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*/
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inline const Vector3D& getTransformedDirection() const;
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protected :
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virtual void innerUpdateTransform();
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private :
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Vector3D direction;
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Vector3D tDirection;
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virtual inline void generateVelocity(Particle& particle,float speed) const;
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};
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inline StraightEmitter* StraightEmitter::create(const Vector3D& direction)
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{
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StraightEmitter* obj = new StraightEmitter(direction);
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registerObject(obj);
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return obj;
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}
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inline const Vector3D& StraightEmitter::getDirection() const
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{
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return direction;
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}
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inline const Vector3D& StraightEmitter::getTransformedDirection() const
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{
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return tDirection;
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}
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inline void StraightEmitter::generateVelocity(Particle& particle,float speed) const
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{
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particle.velocity() = tDirection;
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particle.velocity() *= speed;
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}
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}
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#endif
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