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<title>FTGL: FTTextureGlyph.cpp Source File</title>
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<h1>FTTextureGlyph.cpp</h1><a href="FTTextureGlyph_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 "FTTextureGlyph.h"</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003
<a name="l00004"></a>00004 FTTextureGlyph::FTTextureGlyph( FT_GlyphSlot glyph, <span class="keywordtype">int</span> <span class="keywordtype">id</span>, <span class="keywordtype">int</span> xOffset, <span class="keywordtype">int</span> yOffset, GLsizei width, GLsizei height)
<a name="l00005"></a>00005 : FTGlyph( glyph),
<a name="l00006"></a>00006 destWidth(0),
<a name="l00007"></a>00007 destHeight(0),
<a name="l00008"></a>00008 glTextureID(id),
<a name="l00009"></a>00009 activeTextureID(0)
<a name="l00010"></a>00010 {
<a name="l00011"></a>00011 err = FT_Render_Glyph( glyph, FT_RENDER_MODE_NORMAL);
<a name="l00012"></a>00012 <span class="keywordflow">if</span>( err || glyph->format != ft_glyph_format_bitmap)
<a name="l00013"></a>00013 {
<a name="l00014"></a>00014 <span class="keywordflow">return</span>;
<a name="l00015"></a>00015 }
<a name="l00016"></a>00016
<a name="l00017"></a>00017 FT_Bitmap bitmap = glyph->bitmap;
<a name="l00018"></a>00018
<a name="l00019"></a>00019 destWidth = bitmap.width;
<a name="l00020"></a>00020 destHeight = bitmap.rows;
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="keywordflow">if</span>( destWidth && destHeight)
<a name="l00023"></a>00023 {
<a name="l00024"></a>00024 glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT);
<a name="l00025"></a>00025 glPixelStorei( GL_UNPACK_LSB_FIRST, GL_FALSE);
<a name="l00026"></a>00026 glPixelStorei( GL_UNPACK_ROW_LENGTH, 0);
<a name="l00027"></a>00027 glPixelStorei( GL_UNPACK_ALIGNMENT, 1);
<a name="l00028"></a>00028
<a name="l00029"></a>00029 glBindTexture( GL_TEXTURE_2D, glTextureID);
<a name="l00030"></a>00030 glTexSubImage2D( GL_TEXTURE_2D, 0, xOffset, yOffset, destWidth, destHeight, GL_ALPHA, GL_UNSIGNED_BYTE, bitmap.buffer);
<a name="l00031"></a>00031
<a name="l00032"></a>00032 glPopClientAttrib();
<a name="l00033"></a>00033 }
<a name="l00034"></a>00034
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="comment">// 0 </span>
<a name="l00037"></a>00037 <span class="comment">// +----+</span>
<a name="l00038"></a>00038 <span class="comment">// | |</span>
<a name="l00039"></a>00039 <span class="comment">// | |</span>
<a name="l00040"></a>00040 <span class="comment">// | |</span>
<a name="l00041"></a>00041 <span class="comment">// +----+</span>
<a name="l00042"></a>00042 <span class="comment">// 1</span>
<a name="l00043"></a>00043
<a name="l00044"></a>00044 uv[0].x = static_cast<float>(xOffset) / static_cast<float>(width);
<a name="l00045"></a>00045 uv[0].y = static_cast<float>(yOffset) / static_cast<float>(height);
<a name="l00046"></a>00046 uv[1].x = static_cast<float>( xOffset + destWidth) / static_cast<float>(width);
<a name="l00047"></a>00047 uv[1].y = static_cast<float>( yOffset + destHeight) / static_cast<float>(height);
<a name="l00048"></a>00048
<a name="l00049"></a>00049 pos.x = glyph->bitmap_left;
<a name="l00050"></a>00050 pos.y = glyph->bitmap_top;
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052
<a name="l00053"></a>00053
<a name="l00054"></a>00054 FTTextureGlyph::~FTTextureGlyph()
<a name="l00055"></a>00055 {}
<a name="l00056"></a>00056
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="keywordtype">float</span> FTTextureGlyph::Render( <span class="keyword">const</span> FTPoint& pen)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 glGetIntegerv( GL_TEXTURE_2D_BINDING_EXT, &activeTextureID);
<a name="l00061"></a>00061 <span class="keywordflow">if</span>( activeTextureID != glTextureID)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 glBindTexture( GL_TEXTURE_2D, (GLuint)glTextureID);
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066 glBegin( GL_QUADS);
<a name="l00067"></a>00067 glTexCoord2f( uv[0].x, uv[0].y);
<a name="l00068"></a>00068 glVertex2f( pen.x + pos.x, pen.y + pos.y);
<a name="l00069"></a>00069
<a name="l00070"></a>00070 glTexCoord2f( uv[0].x, uv[1].y);
<a name="l00071"></a>00071 glVertex2f( pen.x + pos.x, pen.y + pos.y - destHeight);
<a name="l00072"></a>00072
<a name="l00073"></a>00073 glTexCoord2f( uv[1].x, uv[1].y);
<a name="l00074"></a>00074 glVertex2f( pen.x + destWidth + pos.x, pen.y + pos.y - destHeight);
<a name="l00075"></a>00075
<a name="l00076"></a>00076 glTexCoord2f( uv[1].x, uv[0].y);
<a name="l00077"></a>00077 glVertex2f( pen.x + destWidth + pos.x, pen.y + pos.y);
<a name="l00078"></a>00078 glEnd();
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keywordflow">return</span> advance;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Wed Aug 23 03:47:29 2006 for FTGL by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.7 </small></address>
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