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87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_DEFORM_2D_H
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#define NL_DEFORM_2D_H
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#include "nel/misc/types_nl.h"
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#include "nel/misc/smart_ptr.h"
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#include "nel/misc/vector_2f.h"
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#include "nel/3d/vertex_buffer.h"
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namespace NL3D
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{
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class IDriver ;
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class ITexture ;
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/**
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* This perform a 2d deformation effect on the frame buffer, by using the given function and surface.
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* This is intended to be used on small surfaces only (getting back data from the frame buffer to build
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* a texture is really slow...)
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* \author Nicolas Vizerie
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* \author Nevrax France
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* \date 2001
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*/
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class CDeform2d
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{
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public:
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typedef std::vector<NLMISC::CVector2f> TPoint2DVect ;
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/// an interface to compute the u,v perturbations at a given point (x and and y range from 0 to 1)
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struct IPerturbUV
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{
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virtual ~IPerturbUV() {}
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virtual void perturbUV(float x, float y, float &du, float &dv) const = 0 ;
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};
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// perform the fx on the given surface of the screen
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static void doDeform(const TPoint2DVect &surf, IDriver *drv, IPerturbUV *uvp) ;
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/** resize the granularity of buffers for fxs
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* \param width frameBuffer width
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* \param height framebuffer height
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* \param xGranularity width of the quads taken from the framebuffer
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* \param yGranularity height of the quads taken from the framebuffer
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* \param xQuad width of the quads used to draw the fx (this is usually lower than xGanularity)
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* \param yQuad height of the quads used to draw the fx (this is usually lower than yGanularity)
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*/
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static void setupBuffer(uint width, uint height, uint xGranularity, uint yGranularity
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, uint xQuad, uint yQuad) ;
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protected:
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static uint _Width;
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static uint _Height;
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static uint _XGranularity;
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static uint _YGranularity;
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static uint _XQuad;
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static uint _YQuad;
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static NLMISC::CSmartPtr<ITexture> _Tex ; // the texture used to get back datas from the framebuffer
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};
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} // NL3D
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#endif // NL_DEFORM_2D_H
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/* End of deform_2d.h */
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