Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/RotateSceneTracker.cpp @ 958:769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
| author | Benjamin Golinvaux <bgo@osimis.io> |
|---|---|
| date | Fri, 23 Aug 2019 10:16:32 +0200 |
| parents | e42b491f1fb2 |
| children | 2d8ab34c8c91 |
| rev | line source |
|---|---|
| 596 | 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 #include "RotateSceneTracker.h" | |
|
736
c0fcb2757b0a
enforce relative includes
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
700
diff
changeset
|
22 #include "../Scene2DViewport/ViewportController.h" |
| 596 | 23 |
| 24 namespace OrthancStone | |
| 25 { | |
|
818
e42b491f1fb2
Removed typedefs to shared_ptr by making them explicit. Removed using namespace
Benjamin Golinvaux <bgo@osimis.io>
parents:
736
diff
changeset
|
26 RotateSceneTracker::RotateSceneTracker(boost::weak_ptr<ViewportController> controllerW, |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
27 const PointerEvent& event) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
28 : OneGesturePointerTracker(controllerW) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
29 , click_(event.GetMainPosition()) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
30 , aligner_(controllerW, click_) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
31 , isFirst_(true) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
32 , originalSceneToCanvas_(GetController()->GetSceneToCanvasTransform()) |
| 596 | 33 { |
| 34 } | |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
35 |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
36 void RotateSceneTracker::PointerMove(const PointerEvent& event) |
| 596 | 37 { |
| 38 ScenePoint2D p = event.GetMainPosition(); | |
| 39 double dx = p.GetX() - click_.GetX(); | |
| 40 double dy = p.GetY() - click_.GetY(); | |
| 41 | |
| 42 if (std::abs(dx) > 5.0 || | |
| 43 std::abs(dy) > 5.0) | |
| 44 { | |
| 45 double a = atan2(dy, dx); | |
| 46 | |
| 47 if (isFirst_) | |
| 48 { | |
| 49 referenceAngle_ = a; | |
| 50 isFirst_ = false; | |
| 51 } | |
| 52 | |
|
958
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
53 // The controller is a weak pointer. It could be deleted when the |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
54 // tracker is still alive (for instance, because of a lost WebGL |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
55 // context that triggers a recreation of the viewport) |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
56 if(GetController().get() != NULL) |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
57 { |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
58 GetController()->SetSceneToCanvasTransform( |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
59 AffineTransform2D::Combine( |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
60 AffineTransform2D::CreateRotation(a - referenceAngle_), |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
61 originalSceneToCanvas_)); |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
62 |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
63 aligner_.Apply(); |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
64 } |
| 596 | 65 } |
| 66 } | |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
67 |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
68 void RotateSceneTracker::Cancel() |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
69 { |
|
958
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
70 // See remark above |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
71 if(GetController().get() != NULL) |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
72 { |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
73 GetController()->SetSceneToCanvasTransform(originalSceneToCanvas_); |
|
769249e1f3b4
added guards to prevent calling methods on a dead controller (see comment in diff for expl.) + build fix
Benjamin Golinvaux <bgo@osimis.io>
parents:
818
diff
changeset
|
74 } |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
75 } |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
76 |
| 596 | 77 } |