Mercurial > hg > orthanc-stone
view Framework/Scene2D/Internals/CairoPolylineRenderer.cpp @ 1039:3a35d8397559
merge
author | Alain Mazy <alain@mazy.be> |
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date | Mon, 07 Oct 2019 22:37:24 +0200 |
parents | 6e888cf6a48b |
children | 2d8ab34c8c91 |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2019 Osimis S.A., Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * 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 * Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "CairoPolylineRenderer.h" #include "../PolylineSceneLayer.h" namespace OrthancStone { namespace Internals { void CairoPolylineRenderer::Render(const AffineTransform2D& transform, unsigned int canvasWidth, unsigned int canvasHeight) { const PolylineSceneLayer& layer = GetLayer<PolylineSceneLayer>(); cairo_t* cr = GetCairoContext(); cairo_set_line_width(cr, layer.GetThickness()); for (size_t i = 0; i < layer.GetChainsCount(); i++) { const Color& color = layer.GetColor(i); cairo_set_source_rgb(cr, color.GetRedAsFloat(), color.GetGreenAsFloat(), color.GetBlueAsFloat()); const PolylineSceneLayer::Chain& chain = layer.GetChain(i); if (!chain.empty()) { for (size_t j = 0; j < chain.size(); j++) { ScenePoint2D p = chain[j].Apply(transform); if (j == 0) { cairo_move_to(cr, p.GetX(), p.GetY()); } else { cairo_line_to(cr, p.GetX(), p.GetY()); } } if (layer.IsClosedChain(i)) { ScenePoint2D p = chain[0].Apply(transform); cairo_line_to(cr, p.GetX(), p.GetY()); } } cairo_stroke(cr); } } } }