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comparison Framework/Scene2D/Internals/OpenGLBasicPolylineRenderer.cpp @ 593:6bf8f881fcb5

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OpenGLBasicPolylineRenderer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 13:04:56 +0200
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children 1e26bb5f2a02
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592:bbe29efd3d1c 593:6bf8f881fcb5
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU Affero General Public License
9 * as published by the Free Software Foundation, either version 3 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Affero General Public License for more details.
16 *
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 **/
20
21
22 #include "OpenGLBasicPolylineRenderer.h"
23
24 #include "../../OpenGL/OpenGLIncludes.h"
25
26 namespace OrthancStone
27 {
28 namespace Internals
29 {
30 OpenGLBasicPolylineRenderer::OpenGLBasicPolylineRenderer(OpenGL::IOpenGLContext& context,
31 const PolylineSceneLayer& layer) :
32 context_(context)
33 {
34 layer_.Copy(layer);
35 }
36
37
38 void OpenGLBasicPolylineRenderer::Render(const AffineTransform2D& transform)
39 {
40 AffineTransform2D t = AffineTransform2D::Combine(
41 AffineTransform2D::CreateOpenGLClipspace(context_.GetCanvasWidth(), context_.GetCanvasHeight()),
42 transform);
43
44 glUseProgram(0);
45 glColor3ub(layer_.GetRed(), layer_.GetGreen(), layer_.GetBlue());
46
47 glBegin(GL_LINES);
48
49 for (size_t i = 0; i < layer_.GetChainsCount(); i++)
50 {
51 const PolylineSceneLayer::Chain& chain = layer_.GetChain(i);
52
53 if (chain.size() > 1)
54 {
55 ScenePoint2D previous = chain[0].Apply(t);
56
57 for (size_t j = 1; j < chain.size(); j++)
58 {
59 ScenePoint2D p = chain[j].Apply(t);
60
61 glVertex2f(previous.GetX(), previous.GetY());
62 glVertex2f(p.GetX(), p.GetY());
63
64 previous = p;
65 }
66
67 if (layer_.IsClosedChain(i))
68 {
69 ScenePoint2D p = chain[0].Apply(t);
70
71 glVertex2f(previous.GetX(), previous.GetY());
72 glVertex2f(p.GetX(), p.GetY());
73 }
74 }
75 }
76
77 glEnd();
78 }
79
80
81 void OpenGLBasicPolylineRenderer::Update(const ISceneLayer& layer)
82 {
83 layer_.Copy(dynamic_cast<const PolylineSceneLayer&>(layer));
84 }
85 }
86 }