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/*
Copyright (C) 2003 Nikolas Zimmermann <wildfox@kde.org>
This file is part of the KDE project
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
aint with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <iostream>
#include "Glyph.h"
#include "Point.h"
#include "BezierPathAgg.h"
#include "GlyphTracerAgg.h"
using namespace T2P;
int traceMoveto(FT_Vector *to, void *obj)
{
Glyph *glyph = reinterpret_cast<Glyph *>(obj);
Affine &affine = glyph->affine();
BezierPathAgg *bpath = static_cast<BezierPathAgg *>(glyph->modifiableBezierPath());
Point p = affine.mapPoint(Point(to->x, to->y));
bpath->m_storage.move_to(p.x(), p.y());
return 0;
}
int traceLineto(FT_Vector *to, void *obj)
{
Glyph *glyph = reinterpret_cast<Glyph *>(obj);
Affine &affine = glyph->affine();
BezierPathAgg *bpath = static_cast<BezierPathAgg *>(glyph->modifiableBezierPath());
Point p = affine.mapPoint(Point(to->x, to->y));
bpath->m_storage.line_to(p.x(), p.y());
return 0;
}
int traceConicBezier(FT_Vector *control, FT_Vector *to, void *obj)
{
Glyph *glyph = reinterpret_cast<Glyph *>(obj);
Affine &affine = glyph->affine();
BezierPathAgg *bpath = static_cast<BezierPathAgg *>(glyph->modifiableBezierPath());
Point c = affine.mapPoint(Point(control->x, control->y));
Point p = affine.mapPoint(Point(to->x, to->y));
double sx, sy;
bpath->m_storage.vertex(bpath->m_storage.total_vertices() - 1, &sx, &sy);
bpath->m_storage.curve4(c.x() - (c.x() - sx) / 3, c.y() - (c.y() - sy) / 3,
c.x() + (p.x() - c.x()) / 3, c.y() + (p.y() - c.y()) / 3, p.x(), p.y());
return 0;
}
int traceCubicBezier(FT_Vector *control1, FT_Vector *control2, FT_Vector *to, void *obj)
{
Glyph *glyph = reinterpret_cast<Glyph *>(obj);
Affine &affine = glyph->affine();
BezierPathAgg *bpath = static_cast<BezierPathAgg *>(glyph->modifiableBezierPath());
Point p = affine.mapPoint(Point(to->x, to->y));
Point c1 = affine.mapPoint(Point(control1->x, control1->y));
Point c2 = affine.mapPoint(Point(control2->x, control2->y));
bpath->m_storage.curve4(c1.x(), c1.y(), c2.x(), c2.y(), p.x(), p.y());
return 0;
}
GlyphTracerAgg::GlyphTracerAgg() : GlyphTracer()
{
setMoveto(*traceMoveto);
setLineto(*traceLineto);
setConicBezier(*traceConicBezier);
setCubicBezier(*traceCubicBezier);
}
GlyphTracerAgg::~GlyphTracerAgg()
{
}
void GlyphTracerAgg::correctGlyph(GlyphAffinePair *glyphAffine)
{
// Take bezier path belonging to glyph (Note: that one is _UNMODIFIABLE_, once calculated)
const BezierPathAgg *path = static_cast<const BezierPathAgg *>(glyphAffine->glyph()->bezierPath());
BezierPathAgg *transformatedPath = static_cast<BezierPathAgg *>(allocBezierPath(0));
Affine &affine = glyphAffine->affine();
transformatedPath->copy_from(path->m_storage, affine);
glyphAffine->setTransformatedPath(transformatedPath);
}
BezierPath *GlyphTracerAgg::allocBezierPath(int)
{
return new BezierPathAgg();
}
void GlyphTracerAgg::closePath(Glyph *glyph)
{
BezierPathAgg *bpath = static_cast<BezierPathAgg *>(glyph->modifiableBezierPath());
bpath->m_storage.close_polygon();
}
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