Mercurial > hg > orthanc-stone
diff Framework/Layers/CircleMeasureTracker.cpp @ 0:351ab0da0150
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 14 Oct 2016 15:34:11 +0200 |
parents | |
children | 7207a407bcd8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Layers/CircleMeasureTracker.cpp Fri Oct 14 15:34:11 2016 +0200 @@ -0,0 +1,122 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * In addition, as a special exception, the copyright holders of this + * program give permission to link the code of its release with the + * OpenSSL project's "OpenSSL" library (or with modified versions of it + * that use the same license as the "OpenSSL" library), and distribute + * the linked executables. You must obey the GNU General Public License + * in all respects for all of the code used other than "OpenSSL". If you + * modify file(s) with this exception, you may extend this exception to + * your version of the file(s), but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from your + * version. If you delete this exception statement from all source files + * in the program, then also delete it here. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#define _USE_MATH_DEFINES // To access M_PI in Visual Studio +#include <cmath> + +#include "CircleMeasureTracker.h" + +#include "../Viewport/CairoFont.h" + +#include <stdio.h> + +namespace OrthancStone +{ + CircleMeasureTracker::CircleMeasureTracker(IStatusBar* statusBar, + const SliceGeometry& slice, + double x, + double y, + uint8_t red, + uint8_t green, + uint8_t blue, + unsigned int fontSize) : + statusBar_(statusBar), + slice_(slice), + x1_(x), + y1_(y), + x2_(x), + y2_(y), + fontSize_(fontSize) + { + color_[0] = red; + color_[1] = green; + color_[2] = blue; + } + + + void CircleMeasureTracker::Render(CairoContext& context, + double zoom) + { + double x = (x1_ + x2_) / 2.0; + double y = (y1_ + y2_) / 2.0; + + Vector tmp; + GeometryToolbox::AssignVector(tmp, x2_ - x1_, y2_ - y1_); + double r = boost::numeric::ublas::norm_2(tmp) / 2.0; + + context.SetSourceColor(color_[0], color_[1], color_[2]); + + cairo_t* cr = context.GetObject(); + cairo_save(cr); + cairo_set_line_width(cr, 2.0 / zoom); + cairo_translate(cr, x, y); + cairo_arc(cr, 0, 0, r, 0, 2 * M_PI); + cairo_stroke_preserve(cr); + cairo_stroke(cr); + cairo_restore(cr); + + if (fontSize_ != 0) + { + cairo_move_to(cr, x, y); + CairoFont font("sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL); + font.Draw(context, FormatRadius(), static_cast<double>(fontSize_) / zoom); + } + } + + + double CircleMeasureTracker::GetRadius() const // In millimeters + { + Vector a = slice_.MapSliceToWorldCoordinates(x1_, y1_); + Vector b = slice_.MapSliceToWorldCoordinates(x2_, y2_); + return boost::numeric::ublas::norm_2(b - a) / 2.0; + } + + + std::string CircleMeasureTracker::FormatRadius() const + { + char buf[64]; + sprintf(buf, "%0.01f cm", GetRadius() / 10.0); + return buf; + } + + void CircleMeasureTracker::MouseMove(double x, + double y) + { + x2_ = x; + y2_ = y; + + if (statusBar_ != NULL) + { + statusBar_->SetMessage("Circle radius: " + FormatRadius()); + } + } +}