diff options
Diffstat (limited to 'src/ftgl/FTGlyph/FTOutlineGlyph.cpp')
-rw-r--r-- | src/ftgl/FTGlyph/FTOutlineGlyph.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/ftgl/FTGlyph/FTOutlineGlyph.cpp b/src/ftgl/FTGlyph/FTOutlineGlyph.cpp new file mode 100644 index 0000000..48e11f7 --- /dev/null +++ b/src/ftgl/FTGlyph/FTOutlineGlyph.cpp @@ -0,0 +1,149 @@ +/* + * FTGL - OpenGL font library + * + * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz> + * Copyright (c) 2008 Éric Beets <ericbeets@free.fr> + * Copyright (c) 2008 Sam Hocevar <sam@zoy.org> + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "config.h" + +#include "FTGL/ftgl.h" + +#include "FTInternals.h" +#include "FTOutlineGlyphImpl.h" +#include "FTVectoriser.h" + + +// +// FTGLOutlineGlyph +// + + +FTOutlineGlyph::FTOutlineGlyph(FT_GlyphSlot glyph, float outset, + bool useDisplayList) : + FTGlyph(new FTOutlineGlyphImpl(glyph, outset, useDisplayList)) +{} + + +FTOutlineGlyph::~FTOutlineGlyph() +{} + + +const FTPoint& FTOutlineGlyph::Render(const FTPoint& pen, int renderMode) +{ + FTOutlineGlyphImpl *myimpl = dynamic_cast<FTOutlineGlyphImpl *>(impl); + return myimpl->RenderImpl(pen, renderMode); +} + + +// +// FTGLOutlineGlyphImpl +// + + +FTOutlineGlyphImpl::FTOutlineGlyphImpl(FT_GlyphSlot glyph, float _outset, + bool useDisplayList) +: FTGlyphImpl(glyph), + glList(0) +{ + if(ft_glyph_format_outline != glyph->format) + { + err = 0x14; // Invalid_Outline + return; + } + + vectoriser = new FTVectoriser(glyph); + + if((vectoriser->ContourCount() < 1) || (vectoriser->PointCount() < 3)) + { + delete vectoriser; + vectoriser = NULL; + return; + } + + outset = _outset; + + if(useDisplayList) + { + glList = glGenLists(1); + glNewList(glList, GL_COMPILE); + + DoRender(); + + glEndList(); + + delete vectoriser; + vectoriser = NULL; + } +} + + +FTOutlineGlyphImpl::~FTOutlineGlyphImpl() +{ + if(glList) + { + glDeleteLists(glList, 1); + } + else if(vectoriser) + { + delete vectoriser; + } +} + + +const FTPoint& FTOutlineGlyphImpl::RenderImpl(const FTPoint& pen, + int renderMode) +{ + glTranslatef(pen.Xf(), pen.Yf(), pen.Zf()); + if(glList) + { + glCallList(glList); + } + else if(vectoriser) + { + DoRender(); + } + glTranslatef(-pen.Xf(), -pen.Yf(), -pen.Zf()); + + return advance; +} + + +void FTOutlineGlyphImpl::DoRender() +{ + for(unsigned int c = 0; c < vectoriser->ContourCount(); ++c) + { + const FTContour* contour = vectoriser->Contour(c); + + glBegin(GL_LINE_LOOP); + for(unsigned int i = 0; i < contour->PointCount(); ++i) + { + FTPoint point = FTPoint(contour->Point(i).X() + contour->Outset(i).X() * outset, + contour->Point(i).Y() + contour->Outset(i).Y() * outset, + 0); + glVertex2f(point.Xf() / 64.0f, point.Yf() / 64.0f); + } + glEnd(); + } +} + |