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authorneodarz <neodarz@neodarz.net>2018-08-11 20:21:34 +0200
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+<hr><h1>patchuv_locator.cpp</h1><a href="patchuv__locator_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
+00007 <font class="comment">/* Copyright, 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="patchuv__locator_8h.html">3d/patchuv_locator.h</a>"</font>
+00029
+00030 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
+00031 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
+00032
+00033 <font class="keyword">namespace </font>NL3D
+00034 {
+00035
+00036
+00037 <font class="comment">// ***************************************************************************</font>
+<a name="l00038"></a><a class="code" href="classNL3D_1_1CPatchUVLocator.html#a0">00038</a> <font class="keywordtype">void</font> CPatchUVLocator::build(<font class="keyword">const</font> CPatch *patchCenter, sint edgeCenter, CPatch::CBindInfo &amp;bindInfo)
+00039 {
+00040 <a class="code" href="debug_8h.html#a6">nlassert</a>(bindInfo.Zone);
+00041 <font class="comment">// copy basic. NB: NPatchs==0 means patchCenter is binded on a 1/X patch.</font>
+00042 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o0">_CenterPatch</a>= const_cast&lt;CPatch*&gt;(patchCenter);
+00043 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o1">_CenterPatchEdge</a>= edgeCenter;
+00044 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>= bindInfo.NPatchs;
+00045
+00046
+00047 <font class="comment">// set it to true. false-d if one of the neighbor patch does not have same number of tile.</font>
+00048 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o5">_SameEdgeOrder</a>= <font class="keyword">true</font>;
+00049
+00050
+00051 <font class="comment">// For all patchs binded to me.</font>
+00052 <font class="keywordflow">for</font>(sint i=0; i&lt;<a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>; i++)
+00053 {
+00054 <font class="comment">// The edge of the neihbor on which we are binded.</font>
+00055 sint edgeNeighbor= bindInfo.Edge[i];
+00056 CPatch *paNeighbor= bindInfo.Next[i];
+00057 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o3">_NeighborPatch</a>[i]= paNeighbor;
+00058
+00059
+00060 <font class="comment">// Find uvI, uvJ, uvP such that: </font>
+00061 <font class="comment">// uvOut= uvIn.x * uvI + uvIn.y * uvJ + uvP.</font>
+00062 CVector2f &amp;uvI= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o4">_NeighborBasis</a>[i].<a class="code" href="structNL3D_1_1CPatchUVLocator_1_1CUVBasis.html#m0">UvI</a>;
+00063 CVector2f &amp;uvJ= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o4">_NeighborBasis</a>[i].<a class="code" href="structNL3D_1_1CPatchUVLocator_1_1CUVBasis.html#m1">UvJ</a>;
+00064 CVector2f &amp;uvP= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o4">_NeighborBasis</a>[i].<a class="code" href="structNL3D_1_1CPatchUVLocator_1_1CUVBasis.html#m2">UvP</a>;
+00065
+00066
+00067 <font class="comment">// Find the basis MeToNeighbor.</font>
+00068 <font class="comment">//=============================</font>
+00069 sint rotation= (edgeCenter - edgeNeighbor + 4) &amp; 3;
+00070 <font class="comment">// Find scale to apply.</font>
+00071 <font class="keywordtype">float</font> scX, scY;
+00072 <font class="comment">// If our neighbor edge is a vertical edge</font>
+00073 <font class="keywordflow">if</font>( (edgeNeighbor&amp;1)==0 )
+00074 {
+00075 scX= 1;
+00076
+00077 <font class="comment">// Manage difference of Order at the edge.</font>
+00078 scY= (float)paNeighbor-&gt;getOrderForEdge(edgeNeighbor) / (float)patchCenter-&gt;getOrderForEdge(edgeCenter);
+00079 <font class="comment">// Manage bind on the edge.</font>
+00080 <font class="comment">// If patchCenter is binded on a bigger</font>
+00081 <font class="keywordflow">if</font>(bindInfo.MultipleBindNum!=0)
+00082 scY/= bindInfo.MultipleBindNum;
+00083 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>&gt;1)
+00084 scY*= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>;
+00085 <font class="comment">// same TileOrder on the edge??</font>
+00086 <font class="keywordflow">if</font>(scY!=1)
+00087 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o5">_SameEdgeOrder</a>= <font class="keyword">false</font>;
+00088 }
+00089 <font class="keywordflow">else</font>
+00090 {
+00091 scY= 1;
+00092
+00093 <font class="comment">// Manage difference of Order at the edge.</font>
+00094 scX= (float)paNeighbor-&gt;getOrderForEdge(edgeNeighbor) / (float)patchCenter-&gt;getOrderForEdge(edgeCenter);
+00095 <font class="comment">// Manage bind on the edge.</font>
+00096 <font class="comment">// If patchCenter is binded on a bigger</font>
+00097 <font class="keywordflow">if</font>(bindInfo.MultipleBindNum!=0)
+00098 scX/= bindInfo.MultipleBindNum;
+00099 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>&gt;1)
+00100 scX*= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>;
+00101 <font class="comment">// same TileOrder on the edge??</font>
+00102 <font class="keywordflow">if</font>(scX!=1)
+00103 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o5">_SameEdgeOrder</a>= <font class="keyword">false</font>;
+00104 }
+00105 <font class="comment">// Find rotation to apply.</font>
+00106 <font class="keywordflow">switch</font>(rotation)
+00107 {
+00108 <font class="keywordflow">case</font> 0: uvI.set(-scX, 0); uvJ.set(0, -scY); <font class="keywordflow">break</font>;
+00109 <font class="keywordflow">case</font> 1: uvI.set(0, -scY); uvJ.set(scX, 0); <font class="keywordflow">break</font>;
+00110 <font class="keywordflow">case</font> 2: uvI.set(scX, 0); uvJ.set(0, scY); <font class="keywordflow">break</font>;
+00111 <font class="keywordflow">case</font> 3: uvI.set(0, scY); uvJ.set(-scX, 0); <font class="keywordflow">break</font>;
+00112 }
+00113
+00114
+00115 <font class="comment">// Find the position.</font>
+00116 <font class="comment">//=============================</font>
+00117 <font class="comment">// Find the uv coord at start of the edge, for 2 patchs.</font>
+00118 CVector2f uvCenter;
+00119 CVector2f uvNeighbor;
+00120 <font class="keywordtype">float</font> decal;
+00121
+00122 <font class="comment">// find the uv at start of edgeCenter, + decal due to bind 1/X.</font>
+00123 <font class="keywordtype">float</font> ocS= patchCenter-&gt;getOrderS();
+00124 <font class="keywordtype">float</font> ocT= patchCenter-&gt;getOrderT();
+00125 <font class="comment">// Manage Bind 1/X.</font>
+00126 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>&gt;1)
+00127 {
+00128 <font class="comment">// Move uvCenter, so it is near the position at start of edgeNeighbor.</font>
+00129 decal= (float)i / <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>;
+00130 }
+00131 <font class="keywordflow">else</font>
+00132 decal= 0;
+00133 <font class="comment">// Manage rotation.</font>
+00134 <font class="keywordflow">switch</font>(edgeCenter)
+00135 {
+00136 <font class="keywordflow">case</font> 0: uvCenter.set(0, decal*ocT); <font class="keywordflow">break</font>;
+00137 <font class="keywordflow">case</font> 1: uvCenter.set(decal*ocS, ocT); <font class="keywordflow">break</font>;
+00138 <font class="keywordflow">case</font> 2: uvCenter.set(ocS, (1-decal)*ocT); <font class="keywordflow">break</font>;
+00139 <font class="keywordflow">case</font> 3: uvCenter.set((1-decal)*ocS, 0); <font class="keywordflow">break</font>;
+00140 };
+00141
+00142 <font class="comment">// find the uv at start of edgeNeighbor, + decal due to bind X/1.</font>
+00143 <font class="keywordtype">float</font> onS= paNeighbor-&gt;getOrderS();
+00144 <font class="keywordtype">float</font> onT= paNeighbor-&gt;getOrderT();
+00145 <font class="comment">// Manage Bind X/1.</font>
+00146 <font class="keywordflow">if</font>(bindInfo.MultipleBindNum!=0)
+00147 {
+00148 <font class="comment">// Must invert the id, because of mirror.... (make a draw).</font>
+00149 sint <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>= (bindInfo.MultipleBindNum-1) - bindInfo.MultipleBindId;
+00150 <font class="comment">// Move uvNeighbor, so it is near the position at start of edgeCenter.</font>
+00151 decal= (float)<a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a> / bindInfo.MultipleBindNum;
+00152 }
+00153 <font class="keywordflow">else</font>
+00154 decal= 0;
+00155 <font class="comment">// Manage rotation.</font>
+00156 <font class="keywordflow">switch</font>(edgeNeighbor)
+00157 {
+00158 <font class="keywordflow">case</font> 0: uvNeighbor.set(0, (1-decal)*onT); <font class="keywordflow">break</font>;
+00159 <font class="keywordflow">case</font> 1: uvNeighbor.set((1-decal)*onS, onT); <font class="keywordflow">break</font>;
+00160 <font class="keywordflow">case</font> 2: uvNeighbor.set(onS, decal*onT); <font class="keywordflow">break</font>;
+00161 <font class="keywordflow">case</font> 3: uvNeighbor.set(decal*onS, 0); <font class="keywordflow">break</font>;
+00162 };
+00163
+00164
+00165
+00166 <font class="comment">// uvOut= uvIn.x * uvI + uvIn.y * uvJ + uvP.</font>
+00167 <font class="comment">// So uvP = uvOut - uvIn.x * uvI - uvIn.y * uvJ</font>
+00168 uvP= uvNeighbor - uvCenter.x * uvI - uvCenter.y * uvJ;
+00169
+00170 }
+00171 }
+00172
+00173
+00174 <font class="comment">// ***************************************************************************</font>
+<a name="l00175"></a><a class="code" href="classNL3D_1_1CPatchUVLocator.html#a1">00175</a> uint CPatchUVLocator::selectPatch(<font class="keyword">const</font> CVector2f &amp;uvIn)
+00176 {
+00177 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>==1)
+00178 <font class="keywordflow">return</font> 0;
+00179 <font class="keywordflow">else</font>
+00180 {
+00181 <font class="comment">// Choice before on which patch we must go.</font>
+00182 <font class="keywordtype">float</font> selection=0.0;
+00183 uint os= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o0">_CenterPatch</a>-&gt;getOrderS();
+00184 uint ot= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o0">_CenterPatch</a>-&gt;getOrderT();
+00185 <font class="keywordflow">switch</font>(_CenterPatchEdge)
+00186 {
+00187 <font class="keywordflow">case</font> 0: selection= uvIn.y / ot; <font class="keywordflow">break</font>;
+00188 <font class="keywordflow">case</font> 1: selection= uvIn.x / os; <font class="keywordflow">break</font>;
+00189 <font class="keywordflow">case</font> 2: selection= (ot-uvIn.y) / ot; <font class="keywordflow">break</font>;
+00190 <font class="keywordflow">case</font> 3: selection= (os-uvIn.x) / os; <font class="keywordflow">break</font>;
+00191 }
+00192
+00193 sint sel= (sint)floor(selection*<a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>);
+00194 <a class="code" href="namespaceNLMISC.html#a215">clamp</a>(sel, 0, <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>-1);
+00195
+00196 <font class="keywordflow">return</font> sel;
+00197 }
+00198 }
+00199
+00200
+00201 <font class="comment">// ***************************************************************************</font>
+<a name="l00202"></a><a class="code" href="classNL3D_1_1CPatchUVLocator.html#a2">00202</a> <font class="keywordtype">void</font> CPatchUVLocator::locateUV(<font class="keyword">const</font> CVector2f &amp;uvIn, uint patch, CPatch *&amp;patchOut, CVector2f &amp;uvOut)
+00203 {
+00204 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CPatchUVLocator.html#o2">_NPatchs</a>==1)
+00205 {
+00206 <font class="comment">// Change basis and select good patch.</font>
+00207 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o4">_NeighborBasis</a>[0].<a class="code" href="structNL3D_1_1CPatchUVLocator_1_1CUVBasis.html#a0">mulPoint</a>(uvIn, uvOut);
+00208 patchOut= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o3">_NeighborPatch</a>[0];
+00209 }
+00210 <font class="keywordflow">else</font>
+00211 {
+00212 <font class="comment">// Change basis and select good patch.</font>
+00213 <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o4">_NeighborBasis</a>[patch].<a class="code" href="structNL3D_1_1CPatchUVLocator_1_1CUVBasis.html#a0">mulPoint</a>(uvIn, uvOut);
+00214 patchOut= <a class="code" href="classNL3D_1_1CPatchUVLocator.html#o3">_NeighborPatch</a>[patch];
+00215 }
+00216 }
+00217
+00218
+00219
+00220 } <font class="comment">// NL3D</font>
+</pre></div>
+
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