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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>00001 <span class="preprocessor">#include "<a class="code" href="FTTextureGlyph_8h.html">FTTextureGlyph.h</a>"</span> |
| 00002 |
| 00003 GLint FTTextureGlyph::activeTextureID = 0; |
| 00004 |
| <a name="l00005"></a><a class="code" href="classFTTextureGlyph.html#a0">00005</a> <a class="code" href="classFTTextureGlyph.html#a0">FTTextureGlyph::FTTextureGlyph</a>( 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) |
| 00006 : <a class="code" href="classFTGlyph.html">FTGlyph</a>( glyph), |
| 00007 destWidth(0), |
| 00008 destHeight(0), |
| 00009 glTextureID(id) |
| 00010 { |
| 00011 err = FT_Render_Glyph( glyph, <a class="code" href="FTGL_8h.html#a2">FT_RENDER_MODE_NORMAL</a>); |
| 00012 <span class="keywordflow">if</span>( err || glyph->format != ft_glyph_format_bitmap) |
| 00013 { |
| 00014 <span class="keywordflow">return</span>; |
| 00015 } |
| 00016 |
| 00017 FT_Bitmap bitmap = glyph->bitmap; |
| 00018 |
| 00019 destWidth = bitmap.width; |
| 00020 destHeight = bitmap.rows; |
| 00021 |
| 00022 <span class="keywordflow">if</span>( destWidth && destHeight) |
| 00023 { |
| 00024 glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT); |
| 00025 glPixelStorei( GL_UNPACK_LSB_FIRST, GL_FALSE); |
| 00026 glPixelStorei( GL_UNPACK_ROW_LENGTH, 0); |
| 00027 glPixelStorei( GL_UNPACK_ALIGNMENT, 1); |
| 00028 |
| 00029 glBindTexture( GL_TEXTURE_2D, glTextureID); |
| 00030 glTexSubImage2D( GL_TEXTURE_2D, 0, xOffset, yOffset, destWidth, destHeight, GL_ALPHA, GL_UNSIGNED_BYTE, bitmap.buffer); |
| 00031 |
| 00032 glPopClientAttrib(); |
| 00033 } |
| 00034 |
| 00035 |
| 00036 <span class="comment">// 0 </span> |
| 00037 <span class="comment">// +----+</span> |
| 00038 <span class="comment">// | |</span> |
| 00039 <span class="comment">// | |</span> |
| 00040 <span class="comment">// | |</span> |
| 00041 <span class="comment">// +----+</span> |
| 00042 <span class="comment">// 1</span> |
| 00043 |
| 00044 uv[0].<a class="code" href="classFTPoint.html#a7">X</a>( static_cast<float>(xOffset) / static_cast<float>(width)); |
| 00045 uv[0].<a class="code" href="classFTPoint.html#a8">Y</a>( static_cast<float>(yOffset) / static_cast<float>(height)); |
| 00046 uv[1].<a class="code" href="classFTPoint.html#a7">X</a>( static_cast<float>( xOffset + destWidth) / static_cast<float>(width)); |
| 00047 uv[1].<a class="code" href="classFTPoint.html#a8">Y</a>( static_cast<float>( yOffset + destHeight) / static_cast<float>(height)); |
| 00048 |
| 00049 pos.<a class="code" href="classFTPoint.html#a7">X</a>( glyph->bitmap_left); |
| 00050 pos.<a class="code" href="classFTPoint.html#a8">Y</a>( glyph->bitmap_top); |
| 00051 } |
| 00052 |
| 00053 |
| <a name="l00054"></a><a class="code" href="classFTTextureGlyph.html#a1">00054</a> <a class="code" href="classFTTextureGlyph.html#a1">FTTextureGlyph::~FTTextureGlyph</a>() |
| 00055 {} |
| 00056 |
| 00057 |
| <a name="l00058"></a><a class="code" href="classFTTextureGlyph.html#a2">00058</a> <span class="keyword">const</span> <a class="code" href="classFTPoint.html">FTPoint</a>& <a class="code" href="classFTTextureGlyph.html#a2">FTTextureGlyph::Render</a>( <span class="keyword">const</span> <a class="code" href="classFTPoint.html">FTPoint</a>& pen) |
| 00059 { |
| 00060 <span class="keywordflow">if</span>( activeTextureID != glTextureID) |
| 00061 { |
| 00062 glBindTexture( GL_TEXTURE_2D, (GLuint)glTextureID); |
| 00063 activeTextureID = glTextureID; |
| 00064 } |
| 00065 |
| 00066 glTranslatef( pen.<a class="code" href="classFTPoint.html#a7">X</a>(), pen.<a class="code" href="classFTPoint.html#a8">Y</a>(), 0.0f); |
| 00067 |
| 00068 glBegin( GL_QUADS); |
| 00069 glTexCoord2f( uv[0].X(), uv[0].Y()); |
| 00070 glVertex2f( pos.<a class="code" href="classFTPoint.html#a7">X</a>(), pos.<a class="code" href="classFTPoint.html#a8">Y</a>()); |
| 00071 |
| 00072 glTexCoord2f( uv[0].X(), uv[1].Y()); |
| 00073 glVertex2f( pos.<a class="code" href="classFTPoint.html#a7">X</a>(), pos.<a class="code" href="classFTPoint.html#a8">Y</a>() - destHeight); |
| 00074 |
| 00075 glTexCoord2f( uv[1].X(), uv[1].Y()); |
| 00076 glVertex2f( destWidth + pos.<a class="code" href="classFTPoint.html#a7">X</a>(), pos.<a class="code" href="classFTPoint.html#a8">Y</a>() - destHeight); |
| 00077 |
| 00078 glTexCoord2f( uv[1].X(), uv[0].Y()); |
| 00079 glVertex2f( destWidth + pos.<a class="code" href="classFTPoint.html#a7">X</a>(), pos.<a class="code" href="classFTPoint.html#a8">Y</a>()); |
| 00080 glEnd(); |
| 00081 |
| 00082 <span class="keywordflow">return</span> advance; |
| 00083 } |
| 00084 |
| </pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Dec 5 22:24:06 2004 for FTGL by |
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| </a>1.3.6 </small></address> |
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