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Diffstat (limited to 'src/3rdparty/2geom/src/toys/bound-path.cpp')
| -rw-r--r-- | src/3rdparty/2geom/src/toys/bound-path.cpp | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/src/3rdparty/2geom/src/toys/bound-path.cpp b/src/3rdparty/2geom/src/toys/bound-path.cpp new file mode 100644 index 0000000..39ce2a1 --- /dev/null +++ b/src/3rdparty/2geom/src/toys/bound-path.cpp @@ -0,0 +1,289 @@ +/* + * Bounds Path and PathVector + * + * Authors: + * Marco Cecchetti <mrcekets at gmail.com> + * + * Copyright 2008 authors + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + */ + +#include <2geom/d2.h> +#include <2geom/sbasis.h> +#include <2geom/path.h> +#include <2geom/pathvector.h> + +#include <toys/path-cairo.h> +#include <toys/toy-framework-2.h> + +using namespace Geom; + +std::string option_formatter(double x) +{ + if (x == 0.0) + return std::string("CURVE"); + if (x == 1.0) + return std::string("PATH"); + if (x == 2.0) + return std::string("PATHVECTOR"); + + return std::string(""); +} + +class BoundsPath : public Toy +{ + enum { CURVE = 0, PATH, PATHVECTOR }; + enum { FAST = 0, EXACT = 1 }; + + private: + void draw( cairo_t *cr, std::ostringstream *notify, + int width, int height, bool save, std::ostringstream *timer_stream) override + { + cairo_set_line_width (cr, 0.3); + m_selection_kind = (unsigned int) (sliders[0].value()); + + for (unsigned int i = 0; i < m_pathvector_coll.size(); ++i) + { + cairo_set_source_rgba(cr, 0.0, 0.4*(i+1), 0.8/(i+1), 1.0); + for (unsigned int j = 0; j < m_pathvector_coll[i].size(); ++j) + { + m_pathvector_coll[i][j].clear(); + for (unsigned int k = 0; k < m_curves_per_path; ++k) + { + PointSetHandle psh; + psh.pts.resize(m_handles_per_curve); + for (unsigned int h = 0; h < m_handles_per_curve; ++h) + { + unsigned int kk = k * (m_handles_per_curve-1) + h; + psh.pts[h] = m_pathvector_coll_handles[i][j].pts[kk]; + } + m_pathvector_coll[i][j].append(psh.asBezier()); + } + cairo_path(cr, m_pathvector_coll[i][j]); + } + cairo_stroke(cr); + } + + + Rect bound; + if ( (m_selection_kind == CURVE) && (m_selected_curve != -1) ) + { + const Curve & curve = m_pathvector_coll[m_selected_pathvector][m_selected_path][m_selected_curve]; + bound = toggles[0].on ? curve.boundsExact() + : curve.boundsFast(); + } + else if ( (m_selection_kind == PATH) && (m_selected_path != -1) ) + { + const Path & path = m_pathvector_coll[m_selected_pathvector][m_selected_path]; + bound = toggles[0].on ? *path.boundsExact() + : *path.boundsFast(); + } + else if ( (m_selection_kind == PATHVECTOR) && (m_selected_pathvector != -1) ) + { + const PathVector & pathvector = m_pathvector_coll[m_selected_pathvector]; + bound = toggles[0].on ? *bounds_exact(pathvector) + : *bounds_fast(pathvector); + } + + cairo_set_source_rgba(cr, 0.5, 0.0, 0.0, 1.0); + cairo_set_line_width (cr, 0.4); + cairo_rectangle(cr, bound.left(), bound.top(), bound.width(), bound.height()); + cairo_stroke(cr); + + Toy::draw(cr, notify, width, height, save,timer_stream); + } + + + void mouse_pressed(GdkEventButton* e) override + { + Point pos(e->x, e->y); + double d, t; + double dist = 1e10; + Rect bound; + m_selected_pathvector = -1; + m_selected_path = -1; + m_selected_curve = -1; + if (m_selection_kind == CURVE) + { + for (unsigned int i = 0; i < m_pathvector_coll.size(); ++i) + { + for (unsigned int j = 0; j < m_pathvector_coll[i].size(); ++j) + { + for ( unsigned int k = 0; k < m_pathvector_coll[i][j].size(); ++k) + { + const Curve & curve = m_pathvector_coll[i][j][k]; + bound = toggles[0].on ? curve.boundsExact() + : curve.boundsFast(); + d = distanceSq(pos, bound); + if ( are_near(d, 0) ) + { + t = curve.nearestTime(pos); + d = distanceSq(pos, curve.pointAt(t)); + if (d < dist) + { + dist = d; + m_selected_pathvector = i; + m_selected_path = j; + m_selected_curve = k; + } + } + } + } + } + //std::cerr << "m_selected_path = " << m_selected_path << std::endl; + //std::cerr << "m_selected_curve = " << m_selected_curve << std::endl; + } + else if (m_selection_kind == PATH) + { + for (unsigned int i = 0; i < m_pathvector_coll.size(); ++i) + { + for (unsigned int j = 0; j < m_pathvector_coll[i].size(); ++j) + { + const Path & path = m_pathvector_coll[i][j]; + bound = toggles[0].on ? *path.boundsExact() + : *path.boundsFast(); + d = distanceSq(pos, bound); + if ( are_near(d, 0) ) + { + t = path.nearestTime(pos).asFlatTime(); + d = distanceSq(pos, path.pointAt(t)); + if (d < dist) + { + dist = d; + m_selected_pathvector = i; + m_selected_path = j; + } + } + } + } + } + else if (m_selection_kind == PATHVECTOR) + { + for (unsigned int i = 0; i < m_pathvector_coll.size(); ++i) + { + const PathVector & pathvector = m_pathvector_coll[i]; + bound = toggles[0].on ? *bounds_exact(pathvector) + : *bounds_fast(pathvector); + d = distanceSq(pos, bound); + if ( are_near(d, 0) ) + { + for (unsigned int j = 0; j < m_pathvector_coll[i].size(); ++j) + { + const Path & path = m_pathvector_coll[i][j]; + t = path.nearestTime(pos).asFlatTime(); + d = distanceSq(pos, path.pointAt(t)); + if (d < dist) + { + dist = d; + m_selected_pathvector = i; + } + } + } + } + } + + Toy::mouse_pressed(e); + } + + public: + BoundsPath() + { + m_total_pathvectors = 2; + m_paths_per_vector = 2; + m_curves_per_path = 3; + m_handles_per_curve = 4; + + m_selection_kind = CURVE; + m_selected_pathvector = -1; + m_selected_path = -1; + m_selected_curve = -1; + m_handles_per_path = m_curves_per_path * (m_handles_per_curve-1) + 1; + + m_pathvector_coll_handles.resize(m_total_pathvectors); + m_pathvector_coll.resize(m_total_pathvectors); + for (unsigned int k = 0; k < m_total_pathvectors; ++k) + { + m_pathvector_coll_handles[k].resize(m_paths_per_vector); + m_pathvector_coll[k].resize(m_paths_per_vector); + for (unsigned int j = 0; j < m_paths_per_vector; ++j) + { + m_pathvector_coll_handles[k][j].pts.resize(m_handles_per_path); + handles.push_back(&(m_pathvector_coll_handles[k][j])); + for (unsigned int i = 0; i < m_handles_per_path; ++i) + { + m_pathvector_coll_handles[k][j].pts[i] + = Point(500*uniform() + 300*k, 300*uniform() + 80 + 200*j); + } + } + } + + sliders.emplace_back(0, 2, 1, 0, "selection type"); + sliders[0].geometry(Point(10, 20), 50, X); + sliders[0].formatter(&option_formatter); + + Rect toggle_bound(Point(300,20), Point(390, 45)); + toggles.emplace_back(toggle_bound, "fast/exact", EXACT); + + handles.push_back(&(sliders[0])); + handles.push_back(&(toggles[0])); + } + + + private: + unsigned int m_total_pathvectors; + unsigned int m_paths_per_vector; + unsigned int m_curves_per_path; + unsigned int m_handles_per_curve; + unsigned int m_handles_per_path; + std::vector<PathVector> m_pathvector_coll; + std::vector< std::vector<PointSetHandle> > m_pathvector_coll_handles; +// PathVector m_pathvector; +// std::vector<PointSetHandle> m_pathvector_handles; + int m_selected_curve; + int m_selected_path; + int m_selected_pathvector; + unsigned int m_selection_kind; + std::vector<Slider> sliders; + std::vector<Toggle> toggles; +}; + + +int main(int argc, char **argv) +{ + init( argc, argv, new BoundsPath(), 800, 600 ); + return 0; +} + + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |