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