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<h1>FTExtrdGlyph.cpp</h1><a href="FTExtrdGlyph_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 <math.h></span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="preprocessor">#include "FTExtrdGlyph.h"</span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "FTVectoriser.h"</span>
<a name="l00005"></a>00005
<a name="l00006"></a>00006
<a name="l00007"></a>00007 FTExtrdGlyph::FTExtrdGlyph( FT_GlyphSlot glyph, <span class="keywordtype">float</span> d)
<a name="l00008"></a>00008 : FTGlyph( glyph),
<a name="l00009"></a>00009 glList(0),
<a name="l00010"></a>00010 depth(d)
<a name="l00011"></a>00011 {
<a name="l00012"></a>00012 bBox.SetDepth( -depth);
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="keywordflow">if</span>( ft_glyph_format_outline != glyph->format)
<a name="l00015"></a>00015 {
<a name="l00016"></a>00016 err = 0x14; <span class="comment">// Invalid_Outline</span>
<a name="l00017"></a>00017 <span class="keywordflow">return</span>;
<a name="l00018"></a>00018 }
<a name="l00019"></a>00019
<a name="l00020"></a>00020 FTVectoriser vectoriser( glyph);
<a name="l00021"></a>00021 <span class="keywordflow">if</span> ( ( vectoriser.ContourCount() < 1) || ( vectoriser.PointCount() < 3))
<a name="l00022"></a>00022 {
<a name="l00023"></a>00023 <span class="keywordflow">return</span>;
<a name="l00024"></a>00024 }
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> tesselationIndex;
<a name="l00027"></a>00027 glList = glGenLists(1);
<a name="l00028"></a>00028 glNewList( glList, GL_COMPILE);
<a name="l00029"></a>00029
<a name="l00030"></a>00030 vectoriser.MakeMesh( 1.0);
<a name="l00031"></a>00031 glNormal3d(0.0, 0.0, 1.0);
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="keyword">const</span> FTMesh* mesh = vectoriser.GetMesh();
<a name="l00034"></a>00034 <span class="keywordflow">for</span>( tesselationIndex = 0; tesselationIndex < mesh->TesselationCount(); ++tesselationIndex)
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 <span class="keyword">const</span> FTTesselation* subMesh = mesh->Tesselation( tesselationIndex);
<a name="l00037"></a>00037 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> polyonType = subMesh->PolygonType();
<a name="l00038"></a>00038
<a name="l00039"></a>00039 glBegin( polyonType);
<a name="l00040"></a>00040 <span class="keywordflow">for</span>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pointIndex = 0; pointIndex < subMesh->PointCount(); ++pointIndex)
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 glVertex3f( subMesh->Point( pointIndex).x / 64.0f,
<a name="l00043"></a>00043 subMesh->Point( pointIndex).y / 64.0f,
<a name="l00044"></a>00044 0.0f);
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046 glEnd();
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048
<a name="l00049"></a>00049 vectoriser.MakeMesh( -1.0);
<a name="l00050"></a>00050 glNormal3d(0.0, 0.0, -1.0);
<a name="l00051"></a>00051
<a name="l00052"></a>00052 mesh = vectoriser.GetMesh();
<a name="l00053"></a>00053 <span class="keywordflow">for</span>( tesselationIndex = 0; tesselationIndex < mesh->TesselationCount(); ++tesselationIndex)
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 <span class="keyword">const</span> FTTesselation* subMesh = mesh->Tesselation( tesselationIndex);
<a name="l00056"></a>00056 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> polyonType = subMesh->PolygonType();
<a name="l00057"></a>00057
<a name="l00058"></a>00058 glBegin( polyonType);
<a name="l00059"></a>00059 <span class="keywordflow">for</span>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pointIndex = 0; pointIndex < subMesh->PointCount(); ++pointIndex)
<a name="l00060"></a>00060 {
<a name="l00061"></a>00061 glVertex3f( subMesh->Point( pointIndex).x / 64.0f,
<a name="l00062"></a>00062 subMesh->Point( pointIndex).y / 64.0f,
<a name="l00063"></a>00063 -depth);
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065 glEnd();
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keywordtype">int</span> contourFlag = vectoriser.ContourFlag();
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordflow">for</span>( size_t c = 0; c < vectoriser.ContourCount(); ++c)
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="keyword">const</span> FTContour* contour = vectoriser.Contour(c);
<a name="l00073"></a>00073 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numberOfPoints = contour->PointCount();
<a name="l00074"></a>00074
<a name="l00075"></a>00075 glBegin( GL_QUAD_STRIP);
<a name="l00076"></a>00076 <span class="keywordflow">for</span>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j = 0; j <= numberOfPoints; ++j)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> index = ( j == numberOfPoints) ? 0 : j;
<a name="l00079"></a>00079 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nextIndex = ( index == numberOfPoints - 1) ? 0 : index + 1;
<a name="l00080"></a>00080
<a name="l00081"></a>00081 FTPoint normal = GetNormal( contour->Point(index), contour->Point(nextIndex));
<a name="l00082"></a>00082 glNormal3f( normal.x, normal.y, 0.0f);
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keywordflow">if</span>( contourFlag & ft_outline_reverse_fill)
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 glVertex3f( contour->Point(index).x / 64.0f, contour->Point(index).y / 64.0f, 0.0f);
<a name="l00087"></a>00087 glVertex3f( contour->Point(index).x / 64.0f, contour->Point(index).y / 64.0f, -depth);
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089 <span class="keywordflow">else</span>
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 glVertex3f( contour->Point(index).x / 64.0f, contour->Point(index).y / 64.0f, -depth);
<a name="l00092"></a>00092 glVertex3f( contour->Point(index).x / 64.0f, contour->Point(index).y / 64.0f, 0.0f);
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095 glEnd();
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097
<a name="l00098"></a>00098 glEndList();
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a>00101
<a name="l00102"></a>00102 FTExtrdGlyph::~FTExtrdGlyph()
<a name="l00103"></a>00103 {
<a name="l00104"></a>00104 glDeleteLists( glList, 1);
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keywordtype">float</span> FTExtrdGlyph::Render( <span class="keyword">const</span> FTPoint& pen)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <span class="keywordflow">if</span>( glList)
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 glTranslatef( pen.x, pen.y, 0);
<a name="l00113"></a>00113 glCallList( glList);
<a name="l00114"></a>00114 glTranslatef( -pen.x, -pen.y, 0);
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordflow">return</span> advance;
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119
<a name="l00120"></a>00120
<a name="l00121"></a>00121 FTPoint FTExtrdGlyph::GetNormal( <span class="keyword">const</span> FTPoint &a, <span class="keyword">const</span> FTPoint &b)
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 <span class="keywordtype">float</span> vectorX = a.x - b.x;
<a name="l00124"></a>00124 <span class="keywordtype">float</span> vectorY = a.y - b.y;
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="keywordtype">float</span> length = sqrt( vectorX * vectorX + vectorY * vectorY );
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keywordflow">if</span>( length > 0.0f)
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 length = 1 / length;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132 <span class="keywordflow">else</span>
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 length = 0.0f;
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="keywordflow">return</span> FTPoint( -vectorY * length,
<a name="l00138"></a>00138 vectorX * length,
<a name="l00139"></a>00139 0.0f);
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141
</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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