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+<hr><h1>deform_2d.cpp</h1><a href="deform__2d_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
+00007 <font class="comment">/* Copyright, 2000, 2001 Nevrax Ltd.</font>
+00008 <font class="comment"> *</font>
+00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
+00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
+00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
+00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
+00013 <font class="comment"> * any later version.</font>
+00014 <font class="comment"></font>
+00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
+00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
+00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
+00018 <font class="comment"> * General Public License for more details.</font>
+00019 <font class="comment"></font>
+00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
+00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
+00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
+00023 <font class="comment"> * MA 02111-1307, USA.</font>
+00024 <font class="comment"> */</font>
+00025
+00026 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font>
+00027
+00028 <font class="preprocessor">#include "<a class="code" href="deform__2d_8h.html">3d/deform_2d.h</a>"</font>
+00029
+00030
+00031
+00032 <font class="preprocessor">#include &lt;vector&gt;</font>
+00033 <font class="preprocessor">#include "<a class="code" href="vector__2f_8h.html">nel/misc/vector_2f.h</a>"</font>
+00034 <font class="preprocessor">#include "<a class="code" href="smart__ptr_8h.html">nel/misc/smart_ptr.h</a>"</font>
+00035 <font class="preprocessor">#include "<a class="code" href="heat__haze_8h.html">3d/heat_haze.h</a>"</font>
+00036 <font class="preprocessor">#include "<a class="code" href="quad__effect_8h.html">3d/quad_effect.h</a>"</font>
+00037 <font class="preprocessor">#include "<a class="code" href="texture__blank_8h.html">3d/texture_blank.h</a>"</font>
+00038 <font class="preprocessor">#include "<a class="code" href="driver_8h.html">3d/driver.h</a>"</font>
+00039 <font class="preprocessor">#include "<a class="code" href="dru_8h.html">3d/dru.h</a>"</font>
+00040 <font class="preprocessor">#include "<a class="code" href="material_8h.html">3d/material.h</a>"</font>
+00041
+00042 <font class="keyword">namespace </font>NL3D {
+00043
+00044
+00045
+<a name="l00046"></a><a class="code" href="classNL3D_1_1CDeform2d.html#q0">00046</a> uint CDeform2d::_Width;
+<a name="l00047"></a><a class="code" href="classNL3D_1_1CDeform2d.html#q1">00047</a> uint CDeform2d::_Height;
+<a name="l00048"></a><a class="code" href="classNL3D_1_1CDeform2d.html#q2">00048</a> uint CDeform2d::_XGranularity;
+<a name="l00049"></a><a class="code" href="classNL3D_1_1CDeform2d.html#q3">00049</a> uint CDeform2d::_YGranularity;
+<a name="l00050"></a><a class="code" href="classNL3D_1_1CDeform2d.html#q4">00050</a> uint CDeform2d::_XQuad;
+<a name="l00051"></a><a class="code" href="classNL3D_1_1CDeform2d.html#q5">00051</a> uint CDeform2d::_YQuad;
+<a name="l00052"></a><a class="code" href="classNL3D_1_1CDeform2d.html#q6">00052</a> <a class="code" href="classNLMISC_1_1CSmartPtr.html">NLMISC::CSmartPtr&lt;ITexture&gt;</a> CDeform2d::_Tex;
+00053
+00054
+<a name="l00055"></a><a class="code" href="classNL3D_1_1CDeform2d.html#d1">00055</a> <font class="keywordtype">void</font> CDeform2d::setupBuffer(uint <a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>, uint <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>, uint xGranularity, uint yGranularity
+00056 , uint xQuad, uint yQuad)
+00057 {
+00058 <a class="code" href="classNL3D_1_1CDeform2d.html#q0">_Width</a> = <a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>;
+00059 <a class="code" href="classNL3D_1_1CDeform2d.html#q1">_Height</a> = <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>;
+00060 <a class="code" href="classNL3D_1_1CDeform2d.html#q2">_XGranularity</a> = xGranularity;
+00061 <a class="code" href="classNL3D_1_1CDeform2d.html#q3">_YGranularity</a> = yGranularity;
+00062 <a class="code" href="classNL3D_1_1CDeform2d.html#q4">_XQuad</a> = xQuad;
+00063 <a class="code" href="classNL3D_1_1CDeform2d.html#q5">_YQuad</a> = yQuad;
+00064
+00065 uint realWidth = <a class="code" href="namespaceNLMISC.html#a223">NLMISC::raiseToNextPowerOf2</a>(<a class="code" href="classNL3D_1_1CDeform2d.html#q0">_Width</a>);
+00066 uint realHeight= <a class="code" href="namespaceNLMISC.html#a223">NLMISC::raiseToNextPowerOf2</a>(<a class="code" href="classNL3D_1_1CDeform2d.html#q1">_Height</a>);
+00067
+00068 <a class="code" href="classNL3D_1_1CDeform2d.html#q6">_Tex</a> = <font class="keyword">new</font> CTextureBlank;
+00069 <a class="code" href="classNL3D_1_1CDeform2d.html#q6">_Tex</a>-&gt;resize(realWidth, realHeight, CBitmap::RGBA);
+00070 }
+00071
+00072
+00073
+00074
+00076 <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">void</font> <a class="code" href="namespaceNL3D.html#a322">computePerturbation</a>(<font class="keyword">const</font> <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <font class="keyword">const</font> <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, <font class="keywordtype">float</font> &amp;dx, <font class="keywordtype">float</font> &amp;dy)
+00077 {
+00078 <font class="comment">// dummy func for now</font>
+00079 <font class="comment">/* dx = 0.05f * (float) (rand() * (1.F / RAND_MAX));</font>
+00080 <font class="comment"> dy = 0.05f * (float) (rand() * (1.F / RAND_MAX));*/</font>
+00081 dx= 0.f;
+00082 dy = 0.f;
+00083 }
+00084
+<a name="l00085"></a><a class="code" href="classNL3D_1_1CDeform2d.html#d0">00085</a> <font class="keywordtype">void</font> CDeform2d::doDeform(<font class="keyword">const</font> TPoint2DVect &amp;surf, IDriver *drv, IPerturbUV *uvp)
+00086 {
+00087
+00088 <a class="code" href="debug_8h.html#a6">nlassert</a>(uvp);
+00089
+00090 <font class="keyword">typedef</font> CQuadEffect::TPoint2DVect <a class="code" href="classNL3D_1_1CDeform2d.html#s0">TPoint2DVect</a>;
+00091 <a class="code" href="classNL3D_1_1CDeform2d.html#s0">TPoint2DVect</a> dest;
+00092
+00093 CQuadEffect::processPoly(surf, (<font class="keywordtype">float</font>) <a class="code" href="classNL3D_1_1CDeform2d.html#q2">_XGranularity</a>, (<font class="keywordtype">float</font>) <a class="code" href="classNL3D_1_1CDeform2d.html#q3">_YGranularity</a>, dest);
+00094
+00095 uint realWidth = <a class="code" href="namespaceNLMISC.html#a223">NLMISC::raiseToNextPowerOf2</a>(<a class="code" href="classNL3D_1_1CDeform2d.html#q0">_Width</a>);
+00096 uint realHeight= <a class="code" href="namespaceNLMISC.html#a223">NLMISC::raiseToNextPowerOf2</a>(<a class="code" href="classNL3D_1_1CDeform2d.html#q1">_Height</a>);
+00097
+00098
+00099 <font class="comment">// draw the poly contour</font>
+00100 <font class="comment">/*for (uint k = 0; k &lt; dest.size(); ++k)</font>
+00101 <font class="comment"> {</font>
+00102 <font class="comment"> CDRU::drawLine(dest[k].x, dest[k].y, dest[(k + 1) % dest.size()].x, dest[(k + 1) % dest.size()].y, *drv, CRGBA::Red);</font>
+00103 <font class="comment"> }*/</font>
+00104
+00105
+00106
+00107
+00108 <font class="keyword">static</font> CMaterial mat;
+00109 mat.setDoubleSided(<font class="keyword">true</font>);
+00110 mat.setLighting(<font class="keyword">false</font>);
+00111 mat.setZFunc(CMaterial::always);
+00112 <font class="comment">/* mat.setColor(CRGBA::Red);</font>
+00113 <font class="comment"> mat.texEnvOpRGB(0, CMaterial::Add); */</font>
+00114
+00115 <font class="keyword">static</font> CVertexBuffer vb;
+00116 vb.setVertexFormat(CVertexBuffer::PositionFlag | CVertexBuffer::TexCoord0Flag);
+00117
+00118
+00119
+00120 drv-&gt;setFrustum(0, (<font class="keywordtype">float</font>) <a class="code" href="classNL3D_1_1CDeform2d.html#q0">_Width</a>, 0, (<font class="keywordtype">float</font>) <a class="code" href="classNL3D_1_1CDeform2d.html#q1">_Height</a>, -1, 1, <font class="keyword">false</font>);
+00121 drv-&gt;setupViewMatrix(CMatrix::Identity);
+00122 drv-&gt;setupModelMatrix(CMatrix::Identity);
+00123
+00124
+00125 <font class="keyword">const</font> <font class="keywordtype">float</font> iDu = 1.f / <a class="code" href="classNL3D_1_1CDeform2d.html#q0">_Width</a>;
+00126 <font class="keyword">const</font> <font class="keywordtype">float</font> iDv = 1.f / <a class="code" href="classNL3D_1_1CDeform2d.html#q1">_Height</a>;
+00127 <font class="keyword">const</font> <font class="keywordtype">float</font> widthRatio = <a class="code" href="classNL3D_1_1CDeform2d.html#q0">_Width</a> / (float) realWidth;
+00128 <font class="keyword">const</font> <font class="keywordtype">float</font> heightRatio = <a class="code" href="classNL3D_1_1CDeform2d.html#q1">_Height</a> / (float) realHeight;
+00129
+00130
+00131 <font class="keywordtype">float</font> u, u2, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>;
+00132 <font class="keywordtype">float</font> du, dv;
+00133
+00134 TPoint2DVect::const_iterator it;
+00135
+00136 <font class="comment">// get back datas from frame buffer</font>
+00137 <font class="keywordflow">for</font> (it = dest.begin(); it != dest.end(); ++it)
+00138 {
+00139 drv-&gt;copyFrameBufferToTexture(<a class="code" href="classNL3D_1_1CDeform2d.html#q6">_Tex</a>, 0, (uint32) it-&gt;x,(uint32) it-&gt;y, (uint32) it-&gt;x, (uint32) it-&gt;y, <a class="code" href="classNL3D_1_1CDeform2d.html#q2">_XGranularity</a>, <a class="code" href="classNL3D_1_1CDeform2d.html#q3">_YGranularity</a>);
+00140 }
+00141
+00142
+00146 vb.setNumVertices(dest.size() &lt;&lt; 2);
+00147 mat.setTexture(0, <a class="code" href="classNL3D_1_1CDeform2d.html#q6">_Tex</a>);
+00148 uint k = 0; <font class="comment">// current index in the vertex buffer</font>
+00149 <font class="keywordflow">for</font> (it = dest.begin(); it != dest.end(); ++it, k += 4)
+00150 {
+00151
+00152 <font class="comment">// \todo optimize this by a direct access to the vertex buffer (if needed)</font>
+00153 <font class="comment">// blit data to frame buffer and apply deformations</font>
+00154
+00155 vb.setVertexCoord(k, <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(it-&gt;x, 0, it-&gt;y));
+00156 vb.setVertexCoord(k + 1, <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(it-&gt;x + <a class="code" href="classNL3D_1_1CDeform2d.html#q2">_XGranularity</a>, 0, it-&gt;y));
+00157 vb.setVertexCoord(k + 2, <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(it-&gt;x + _XGranularity, 0, it-&gt;<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a> + <a class="code" href="classNL3D_1_1CDeform2d.html#q3">_YGranularity</a>));
+00158 vb.setVertexCoord(k + 3, <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(it-&gt;x , 0, it-&gt;y + <a class="code" href="classNL3D_1_1CDeform2d.html#q3">_YGranularity</a>));
+00159
+00160 <font class="comment">// perturbation of the uv coordinates</font>
+00161
+00162 u = it-&gt;x * iDu;
+00163 <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a> = it-&gt;y * iDv;
+00164 uvp-&gt;perturbUV(u, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>, du, dv);
+00165 vb.setTexCoord(k, 0, (u + du) * widthRatio, (<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a> + dv) * heightRatio );
+00166
+00167 u2 = (it-&gt;x + _XGranularity) * iDu;
+00168 uvp-&gt;perturbUV(u2, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>, du, dv);
+00169 vb.setTexCoord(k + 1, 0, (u2 + du) * widthRatio, (<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a> + dv) * heightRatio );
+00170
+00171 <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a> = (it-&gt;y + <a class="code" href="classNL3D_1_1CDeform2d.html#q3">_YGranularity</a>) * iDv;
+00172 uvp-&gt;perturbUV(u2, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>, du, dv);
+00173 vb.setTexCoord(k + 2, 0, (u2 + du) * widthRatio, (<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a> + dv) * heightRatio );
+00174
+00175 uvp-&gt;perturbUV(u, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>, du, dv);
+00176 vb.setTexCoord(k + 3, 0, (u + du) * widthRatio, (<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a> + dv) * heightRatio );
+00177 }
+00178
+00179 drv-&gt;activeVertexBuffer(vb);
+00180 drv-&gt;renderQuads(mat, 0, dest.size());
+00181 }
+00182
+00183 } <font class="comment">// NL3D</font>
+</pre></div>
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