107 lines
3.5 KiB
C
107 lines
3.5 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_GLLINERENDERER
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#define H_SPK_GLLINERENDERER
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#include "RenderingAPIs/OpenGL/SPK_GLRenderer.h"
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#include "Extensions/Renderers/SPK_LineRendererInterface.h"
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namespace SPK
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{
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namespace GL
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{
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/**
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* @class GLLineRenderer
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* @brief A Renderer drawing particles as OpenGL lines
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*
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* The length of the lines is function of the Particle velocity and is defined in the universe space
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* while the width is fixed and defines in the screen space (in pixels).<br>
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* <br>
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* Below are the parameters of Particle that are used in this Renderer (others have no effects) :
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* <ul>
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* <li>SPK::PARAM_RED</li>
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* <li>SPK::PARAM_GREEN</li>
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* <li>SPK::PARAM_BLUE</li>
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* <li>SPK::PARAM_ALPHA (only if blending is enabled)</li>
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* </ul>
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*/
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class SPK_GL_PREFIX GLLineRenderer : public GLRenderer, public LineRendererInterface
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{
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SPK_IMPLEMENT_REGISTERABLE(GLLineRenderer)
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public :
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//////////////////
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// Constructors //
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//////////////////
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/**
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* @brief Constructor of GLLineRenderer
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* @param length : the length multiplier of this GLLineRenderer
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* @param width : the width of this GLLineRenderer in pixels
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*/
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GLLineRenderer(float length = 1.0f,float width = 1.0f);
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/**
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* @brief Creates and registers a new GLLineRenderer
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* @param length : the length multiplier of this GLLineRenderer
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* @param width : the width of this GLLineRenderer in pixels
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* @return A new registered GLLineRenderer
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* @since 1.04.00
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*/
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static inline GLLineRenderer* create(float length = 1.0f,float width = 1.0f);
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///////////////
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// Interface //
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///////////////
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virtual void createBuffers(const Group& group);
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virtual void destroyBuffers(const Group& group);
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virtual void render(const Group& group);
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protected :
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virtual bool checkBuffers(const Group& group);
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private :
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// vertex buffers and iterators
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static float* gpuBuffer;
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static float* gpuIterator;
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// buffers names
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static const std::string GPU_BUFFER_NAME;
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};
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inline GLLineRenderer* GLLineRenderer::create(float length,float width)
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{
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GLLineRenderer* obj = new GLLineRenderer(length,width);
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registerObject(obj);
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return obj;
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}
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}}
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#endif
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