/*
* 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 "..\..\include\ftgl.h"
#include "..\..\include\ftgl\FTInternals.h"
#include "..\..\include\ftglyph\FTPolygonGlyphImpl.h"
#include "..\..\FTVectoriser.h"
//
// FTGLPolyGlyph
//
FTPolygonGlyph::FTPolygonGlyph(FT_GlyphSlot glyph, float outset,
bool useDisplayList) :
FTGlyph(new FTPolygonGlyphImpl(glyph, outset, useDisplayList))
{}
FTPolygonGlyph::~FTPolygonGlyph()
{}
const FTPoint& FTPolygonGlyph::Render(const FTPoint& pen, int renderMode)
{
FTPolygonGlyphImpl *myimpl = dynamic_cast<FTPolygonGlyphImpl *>(impl);
return myimpl->RenderImpl(pen, renderMode);
}
//
// FTGLPolyGlyphImpl
//
FTPolygonGlyphImpl::FTPolygonGlyphImpl(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;
}
hscale = glyph->face->size->metrics.x_ppem * 64;
vscale = glyph->face->size->metrics.y_ppem * 64;
outset = _outset;
if(useDisplayList)
{
glList = glGenLists(1);
glNewList(glList, GL_COMPILE);
DoRender();
glEndList();
delete vectoriser;
vectoriser = NULL;
}
}
FTPolygonGlyphImpl::~FTPolygonGlyphImpl()
{
if(glList)
{
glDeleteLists(glList, 1);
}
else if(vectoriser)
{
delete vectoriser;
}
}
const FTPoint& FTPolygonGlyphImpl::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 FTPolygonGlyphImpl::DoRender()
{
vectoriser->MakeMesh(1.0, 1, outset);
const FTMesh *mesh = vectoriser->GetMesh();
for(unsigned int t = 0; t < mesh->TesselationCount(); ++t)
{
const FTTesselation* subMesh = mesh->Tesselation(t);
unsigned int polygonType = subMesh->PolygonType();
glBegin(polygonType);
for(unsigned int i = 0; i < subMesh->PointCount(); ++i)
{
FTPoint point = subMesh->Point(i);
glTexCoord2f(point.Xf() / hscale, point.Yf() / vscale);
glVertex3f(point.Xf() / 64.0f, point.Yf() / 64.0f, 0.0f);
}
glEnd();
}
}