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comparison OrthancStone/Sources/Viewport/WebGLViewport.cpp @ 1512:244ad1e4e76a

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reorganization of folders
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 Jul 2020 16:21:02 +0200
parents Framework/Viewport/WebGLViewport.cpp@6abd819aa534
children 314b6dc507d9
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1511:9dfeee74c1e6 1512:244ad1e4e76a
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 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 "WebGLViewport.h"
23
24 #include "../StoneException.h"
25 #include "../Scene2D/OpenGLCompositor.h"
26
27 namespace OrthancStone
28 {
29 void WebGLViewport::Paint(ICompositor& compositor,
30 ViewportController& controller)
31 {
32 try
33 {
34 compositor.Refresh(controller.GetScene());
35
36 /**
37 * No need to manually swap the buffer: "Rendered WebGL content
38 * is implicitly presented (displayed to the user) on the canvas
39 * when the event handler that renders with WebGL returns back
40 * to the browser event loop."
41 * https://emscripten.org/docs/api_reference/html5.h.html#webgl-context
42 *
43 * Could call "emscripten_webgl_commit_frame()" if
44 * "explicitSwapControl" option were set to "true".
45 **/
46 }
47 catch (const StoneException& e)
48 {
49 // Ignore problems about the loss of the WebGL context (edge case)
50 if (e.GetErrorCode() == ErrorCode_WebGLContextLost)
51 {
52 return;
53 }
54 else
55 {
56 throw;
57 }
58 }
59 }
60
61
62 WebGLViewport::WebGLViewport(const std::string& canvasId, bool enableEmscriptenMouseEvents) :
63 WebAssemblyViewport(canvasId,enableEmscriptenMouseEvents),
64 context_(GetCanvasCssSelector())
65 {
66 AcquireCompositor(new OpenGLCompositor(context_));
67 }
68
69 boost::shared_ptr<WebGLViewport> WebGLViewport::Create(
70 const std::string& canvasId, bool enableEmscriptenMouseEvents)
71 {
72 boost::shared_ptr<WebGLViewport> that = boost::shared_ptr<WebGLViewport>(
73 new WebGLViewport(canvasId, enableEmscriptenMouseEvents));
74
75 that->WebAssemblyViewport::PostConstructor();
76 return that;
77 }
78
79 WebGLViewport::~WebGLViewport()
80 {
81 // Make sure to delete the compositor before its parent "context_" gets
82 // deleted
83 ClearCompositor();
84 }
85 }