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<h1>FTVectoriser.cpp</h1><a href="FTVectoriser_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include "FTVectoriser.h"</span>
<a name="l00002"></a>00002 <span class="preprocessor">#include "FTGL.h"</span>
<a name="l00003"></a>00003
<a name="l00004"></a>00004 <span class="preprocessor">#ifndef CALLBACK</span>
<a name="l00005"></a>00005 <span class="preprocessor"></span><span class="preprocessor">#define CALLBACK</span>
<a name="l00006"></a>00006 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00007"></a>00007 <span class="preprocessor"></span>
<a name="l00008"></a>00008 <span class="preprocessor">#ifdef __APPLE_CC__ </span>
<a name="l00009"></a>00009 <span class="preprocessor"></span> <span class="keyword">typedef</span> GLvoid (*GLUTesselatorFunction)(...);
<a name="l00010"></a>00010 <span class="preprocessor">#elif defined( __mips ) || defined( __linux__ ) || defined( __FreeBSD__ ) || defined( __OpenBSD__ ) || defined( __sun ) || defined (__CYGWIN__)</span>
<a name="l00011"></a>00011 <span class="preprocessor"></span> <span class="keyword">typedef</span> GLvoid (*GLUTesselatorFunction)();
<a name="l00012"></a>00012 <span class="preprocessor">#elif defined ( WIN32)</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span> <span class="keyword">typedef</span> GLvoid (CALLBACK *GLUTesselatorFunction)( );
<a name="l00014"></a>00014 <span class="preprocessor">#else</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor"> #error "Error - need to define type GLUTesselatorFunction for this platform/compiler"</span>
<a name="l00016"></a>00016 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span>
<a name="l00018"></a>00018
<a name="l00019"></a><a class="code" href="FTVectoriser_8cpp.html#2527f8dd842a16d062d01922863d5340">00019</a> <span class="keywordtype">void</span> CALLBACK <a class="code" href="FTVectoriser_8cpp.html#2527f8dd842a16d062d01922863d5340">ftglError</a>( GLenum errCode, FTMesh* mesh)
<a name="l00020"></a>00020 {
<a name="l00021"></a>00021 mesh->Error( errCode);
<a name="l00022"></a>00022 }
<a name="l00023"></a>00023
<a name="l00024"></a>00024
<a name="l00025"></a><a class="code" href="FTVectoriser_8cpp.html#5324251f8801247bcc94af46c700b476">00025</a> <span class="keywordtype">void</span> CALLBACK <a class="code" href="FTVectoriser_8cpp.html#5324251f8801247bcc94af46c700b476">ftglVertex</a>( <span class="keywordtype">void</span>* data, FTMesh* mesh)
<a name="l00026"></a>00026 {
<a name="l00027"></a>00027 FTGL_DOUBLE* vertex = static_cast<FTGL_DOUBLE*>(data);
<a name="l00028"></a>00028 mesh->AddPoint( vertex[0], vertex[1], vertex[2]);
<a name="l00029"></a>00029 }
<a name="l00030"></a>00030
<a name="l00031"></a>00031
<a name="l00032"></a><a class="code" href="FTVectoriser_8cpp.html#2f6d90b3ce81905b06f7d3f0d8a94ff2">00032</a> <span class="keywordtype">void</span> CALLBACK <a class="code" href="FTVectoriser_8cpp.html#2f6d90b3ce81905b06f7d3f0d8a94ff2">ftglCombine</a>( FTGL_DOUBLE coords[3], <span class="keywordtype">void</span>* vertex_data[4], GLfloat weight[4], <span class="keywordtype">void</span>** outData, FTMesh* mesh)
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034 FTGL_DOUBLE* vertex = static_cast<FTGL_DOUBLE*>(coords);
<a name="l00035"></a>00035 *outData = mesh->Combine( vertex[0], vertex[1], vertex[2]);
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037
<a name="l00038"></a>00038
<a name="l00039"></a><a class="code" href="FTVectoriser_8cpp.html#74ab785d677836daae8ed409d6d20cf0">00039</a> <span class="keywordtype">void</span> CALLBACK <a class="code" href="FTVectoriser_8cpp.html#74ab785d677836daae8ed409d6d20cf0">ftglBegin</a>( GLenum type, FTMesh* mesh)
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041 mesh->Begin( type);
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043
<a name="l00044"></a>00044
<a name="l00045"></a><a class="code" href="FTVectoriser_8cpp.html#4d302d9ee4c55ab28a59a064af4d18bd">00045</a> <span class="keywordtype">void</span> CALLBACK <a class="code" href="FTVectoriser_8cpp.html#4d302d9ee4c55ab28a59a064af4d18bd">ftglEnd</a>( FTMesh* mesh)
<a name="l00046"></a>00046 {
<a name="l00047"></a>00047 mesh->End();
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049
<a name="l00050"></a>00050
<a name="l00051"></a>00051 FTMesh::FTMesh()
<a name="l00052"></a>00052 : currentTesselation(0),
<a name="l00053"></a>00053 err(0)
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 tesselationList.reserve( 16);
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057
<a name="l00058"></a>00058
<a name="l00059"></a>00059 FTMesh::~FTMesh()
<a name="l00060"></a>00060 {
<a name="l00061"></a>00061 <span class="keywordflow">for</span>( size_t t = 0; t < tesselationList.size(); ++t)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 <span class="keyword">delete</span> tesselationList[t];
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066 tesselationList.clear();
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordtype">void</span> FTMesh::AddPoint( <span class="keyword">const</span> FTGL_DOUBLE x, <span class="keyword">const</span> FTGL_DOUBLE y, <span class="keyword">const</span> FTGL_DOUBLE z)
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 currentTesselation->AddPoint( x, y, z);
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00075"></a>00075
<a name="l00076"></a>00076 FTGL_DOUBLE* FTMesh::Combine( <span class="keyword">const</span> FTGL_DOUBLE x, <span class="keyword">const</span> FTGL_DOUBLE y, <span class="keyword">const</span> FTGL_DOUBLE z)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 tempPointList.push_back( FTPoint( x, y,z));
<a name="l00079"></a>00079 <span class="keywordflow">return</span> &tempPointList.back().x;
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="keywordtype">void</span> FTMesh::Begin( GLenum meshType)
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 currentTesselation = <span class="keyword">new</span> FTTesselation( meshType);
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="keywordtype">void</span> FTMesh::End()
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 tesselationList.push_back( currentTesselation);
<a name="l00092"></a>00092 }
<a name="l00093"></a>00093
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keyword">const</span> FTTesselation* <span class="keyword">const</span> FTMesh::Tesselation( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> index)<span class="keyword"> const</span>
<a name="l00096"></a>00096 <span class="keyword"></span>{
<a name="l00097"></a>00097 <span class="keywordflow">return</span> ( index < tesselationList.size()) ? tesselationList[index] : NULL;
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099
<a name="l00100"></a>00100
<a name="l00101"></a>00101 FTVectoriser::FTVectoriser( <span class="keyword">const</span> FT_GlyphSlot glyph)
<a name="l00102"></a>00102 : contourList(0),
<a name="l00103"></a>00103 mesh(0),
<a name="l00104"></a>00104 ftContourCount(0),
<a name="l00105"></a>00105 contourFlag(0)
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 <span class="keywordflow">if</span>( glyph)
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 outline = glyph->outline;
<a name="l00110"></a>00110
<a name="l00111"></a>00111 ftContourCount = outline.n_contours;;
<a name="l00112"></a>00112 contourList = 0;
<a name="l00113"></a>00113 contourFlag = outline.flags;
<a name="l00114"></a>00114
<a name="l00115"></a>00115 ProcessContours();
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a>00119
<a name="l00120"></a>00120 FTVectoriser::~FTVectoriser()
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 <span class="keywordflow">for</span>( size_t c = 0; c < ContourCount(); ++c)
<a name="l00123"></a>00123 {
<a name="l00124"></a>00124 <span class="keyword">delete</span> contourList[c];
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="keyword">delete</span> [] contourList;
<a name="l00128"></a>00128 <span class="keyword">delete</span> mesh;
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordtype">void</span> FTVectoriser::ProcessContours()
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 <span class="keywordtype">short</span> contourLength = 0;
<a name="l00135"></a>00135 <span class="keywordtype">short</span> startIndex = 0;
<a name="l00136"></a>00136 <span class="keywordtype">short</span> endIndex = 0;
<a name="l00137"></a>00137
<a name="l00138"></a>00138 contourList = <span class="keyword">new</span> FTContour*[ftContourCount];
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordflow">for</span>( <span class="keywordtype">short</span> contourIndex = 0; contourIndex < ftContourCount; ++contourIndex)
<a name="l00141"></a>00141 {
<a name="l00142"></a>00142 FT_Vector* pointList = &outline.points[startIndex];
<a name="l00143"></a>00143 <span class="keywordtype">char</span>* tagList = &outline.tags[startIndex];
<a name="l00144"></a>00144
<a name="l00145"></a>00145 endIndex = outline.contours[contourIndex];
<a name="l00146"></a>00146 contourLength = ( endIndex - startIndex) + 1;
<a name="l00147"></a>00147
<a name="l00148"></a>00148 FTContour* contour = <span class="keyword">new</span> FTContour( pointList, tagList, contourLength);
<a name="l00149"></a>00149
<a name="l00150"></a>00150 contourList[contourIndex] = contour;
<a name="l00151"></a>00151
<a name="l00152"></a>00152 startIndex = endIndex + 1;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155
<a name="l00156"></a>00156
<a name="l00157"></a>00157 size_t FTVectoriser::PointCount()
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159 size_t s = 0;
<a name="l00160"></a>00160 <span class="keywordflow">for</span>( size_t c = 0; c < ContourCount(); ++c)
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162 s += contourList[c]->PointCount();
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="keywordflow">return</span> s;
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keyword">const</span> FTContour* <span class="keyword">const</span> FTVectoriser::Contour( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> index)<span class="keyword"> const</span>
<a name="l00170"></a>00170 <span class="keyword"></span>{
<a name="l00171"></a>00171 <span class="keywordflow">return</span> ( index < ContourCount()) ? contourList[index] : NULL;
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="keywordtype">void</span> FTVectoriser::MakeMesh( FTGL_DOUBLE zNormal)
<a name="l00176"></a>00176 {
<a name="l00177"></a>00177 <span class="keywordflow">if</span>( mesh)
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 <span class="keyword">delete</span> mesh;
<a name="l00180"></a>00180 }
<a name="l00181"></a>00181
<a name="l00182"></a>00182 mesh = <span class="keyword">new</span> FTMesh;
<a name="l00183"></a>00183
<a name="l00184"></a>00184 GLUtesselator* tobj = gluNewTess();
<a name="l00185"></a>00185
<a name="l00186"></a>00186 gluTessCallback( tobj, GLU_TESS_BEGIN_DATA, (GLUTesselatorFunction)<a class="code" href="FTVectoriser_8cpp.html#74ab785d677836daae8ed409d6d20cf0">ftglBegin</a>);
<a name="l00187"></a>00187 gluTessCallback( tobj, GLU_TESS_VERTEX_DATA, (GLUTesselatorFunction)<a class="code" href="FTVectoriser_8cpp.html#5324251f8801247bcc94af46c700b476">ftglVertex</a>);
<a name="l00188"></a>00188 gluTessCallback( tobj, GLU_TESS_COMBINE_DATA, (GLUTesselatorFunction)<a class="code" href="FTVectoriser_8cpp.html#2f6d90b3ce81905b06f7d3f0d8a94ff2">ftglCombine</a>);
<a name="l00189"></a>00189 gluTessCallback( tobj, GLU_TESS_END_DATA, (GLUTesselatorFunction)<a class="code" href="FTVectoriser_8cpp.html#4d302d9ee4c55ab28a59a064af4d18bd">ftglEnd</a>);
<a name="l00190"></a>00190 gluTessCallback( tobj, GLU_TESS_ERROR_DATA, (GLUTesselatorFunction)<a class="code" href="FTVectoriser_8cpp.html#2527f8dd842a16d062d01922863d5340">ftglError</a>);
<a name="l00191"></a>00191
<a name="l00192"></a>00192 <span class="keywordflow">if</span>( contourFlag & ft_outline_even_odd_fill) <span class="comment">// ft_outline_reverse_fill</span>
<a name="l00193"></a>00193 {
<a name="l00194"></a>00194 gluTessProperty( tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196 <span class="keywordflow">else</span>
<a name="l00197"></a>00197 {
<a name="l00198"></a>00198 gluTessProperty( tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_NONZERO);
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200
<a name="l00201"></a>00201
<a name="l00202"></a>00202 gluTessProperty( tobj, GLU_TESS_TOLERANCE, 0);
<a name="l00203"></a>00203 gluTessNormal( tobj, 0.0f, 0.0f, zNormal);
<a name="l00204"></a>00204 gluTessBeginPolygon( tobj, mesh);
<a name="l00205"></a>00205
<a name="l00206"></a>00206 <span class="keywordflow">for</span>( size_t c = 0; c < ContourCount(); ++c)
<a name="l00207"></a>00207 {
<a name="l00208"></a>00208 <span class="keyword">const</span> FTContour* contour = contourList[c];
<a name="l00209"></a>00209
<a name="l00210"></a>00210 gluTessBeginContour( tobj);
<a name="l00211"></a>00211
<a name="l00212"></a>00212 <span class="keywordflow">for</span>( size_t p = 0; p < contour->PointCount(); ++p)
<a name="l00213"></a>00213 {
<a name="l00214"></a>00214 FTGL_DOUBLE* d = const_cast<FTGL_DOUBLE*>(&contour->Point(p).x);
<a name="l00215"></a>00215 gluTessVertex( tobj, d, d);
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217
<a name="l00218"></a>00218 gluTessEndContour( tobj);
<a name="l00219"></a>00219 }
<a name="l00220"></a>00220
<a name="l00221"></a>00221 gluTessEndPolygon( tobj);
<a name="l00222"></a>00222
<a name="l00223"></a>00223 gluDeleteTess( tobj);
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Wed Aug 23 03:47:29 2006 for FTGL by
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