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annotate Framework/Scene2D/Internals/CairoPolylineRenderer.cpp @ 595:6e471e6cf09b

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CairoPolylineRenderer, SdlOpenGLWindow
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 15:11:11 +0200
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children 61ba4b504e9a
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "CairoPolylineRenderer.h"
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23
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24 #include "../PolylineSceneLayer.h"
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25
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26 namespace OrthancStone
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27 {
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28 namespace Internals
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29 {
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30 void CairoPolylineRenderer::Render(const AffineTransform2D& transform)
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31 {
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32 const PolylineSceneLayer& layer = GetLayer<PolylineSceneLayer>();
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33
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34 cairo_t* cr = GetCairoContext();
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35
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36 cairo_set_source_rgb(cr, layer.GetRedAsFloat(), layer.GetGreenAsFloat(), layer.GetBlueAsFloat());
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37 cairo_set_line_width(cr, layer.GetThickness());
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38
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39 for (size_t i = 0; i < layer.GetChainsCount(); i++)
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40 {
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41 const PolylineSceneLayer::Chain& chain = layer.GetChain(i);
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42
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43 if (!chain.empty())
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44 {
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45 for (size_t j = 0; j < chain.size(); j++)
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46 {
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47 ScenePoint2D p = chain[j].Apply(transform);
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48
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49 if (j == 0)
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50 {
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51 cairo_move_to(cr, p.GetX(), p.GetY());
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52 }
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53 else
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54 {
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55 cairo_line_to(cr, p.GetX(), p.GetY());
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56 }
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57 }
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58
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59 if (layer.IsClosedChain(i))
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60 {
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61 ScenePoint2D p = chain[0].Apply(transform);
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62 cairo_line_to(cr, p.GetX(), p.GetY());
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63 }
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64 }
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65 }
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66
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67 cairo_stroke(cr);
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68 }
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69 }
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70 }