Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/ZoomSceneTracker.cpp @ 1270:2d8ab34c8c91
upgrade to year 2020
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 31 Jan 2020 17:34:29 +0100 |
| parents | 769249e1f3b4 |
| children | a5326ce4f24b |
| 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 | |
|
1270
2d8ab34c8c91
upgrade to year 2020
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
958
diff
changeset
|
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 596 | 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 "ZoomSceneTracker.h" | |
|
736
c0fcb2757b0a
enforce relative includes
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
700
diff
changeset
|
23 #include "../Scene2DViewport/ViewportController.h" |
| 596 | 24 |
|
818
e42b491f1fb2
Removed typedefs to shared_ptr by making them explicit. Removed using namespace
Benjamin Golinvaux <bgo@osimis.io>
parents:
736
diff
changeset
|
25 using boost::weak_ptr; |
|
e42b491f1fb2
Removed typedefs to shared_ptr by making them explicit. Removed using namespace
Benjamin Golinvaux <bgo@osimis.io>
parents:
736
diff
changeset
|
26 using boost::shared_ptr; |
|
e42b491f1fb2
Removed typedefs to shared_ptr by making them explicit. Removed using namespace
Benjamin Golinvaux <bgo@osimis.io>
parents:
736
diff
changeset
|
27 |
| 596 | 28 namespace OrthancStone |
| 29 { | |
|
818
e42b491f1fb2
Removed typedefs to shared_ptr by making them explicit. Removed using namespace
Benjamin Golinvaux <bgo@osimis.io>
parents:
736
diff
changeset
|
30 ZoomSceneTracker::ZoomSceneTracker(weak_ptr<ViewportController> controllerW, |
| 596 | 31 const PointerEvent& event, |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
32 unsigned int canvasHeight) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
33 : OneGesturePointerTracker(controllerW) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
34 , clickY_(event.GetMainPosition().GetY()) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
35 , aligner_(controllerW, event.GetMainPosition()) |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
36 , originalSceneToCanvas_(GetController()->GetSceneToCanvasTransform()) |
| 596 | 37 { |
| 38 if (canvasHeight <= 3) | |
| 39 { | |
| 40 active_ = false; | |
| 41 } | |
| 42 else | |
| 43 { | |
| 44 normalization_ = 1.0 / static_cast<double>(canvasHeight - 1); | |
| 45 active_ = true; | |
| 46 } | |
| 47 } | |
| 48 | |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
49 void ZoomSceneTracker::PointerMove(const PointerEvent& event) |
| 596 | 50 { |
| 51 static const double MIN_ZOOM = -4; | |
| 52 static const double MAX_ZOOM = 4; | |
| 53 | |
| 54 if (active_) | |
| 55 { | |
| 56 double y = event.GetMainPosition().GetY(); | |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
57 |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
58 // In the range [-1,1] |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
59 double dy = static_cast<double>(y - clickY_) * normalization_; |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
60 |
| 596 | 61 double z; |
| 62 | |
| 63 // Linear interpolation from [-1, 1] to [MIN_ZOOM, MAX_ZOOM] | |
| 64 if (dy < -1.0) | |
| 65 { | |
| 66 z = MIN_ZOOM; | |
| 67 } | |
| 68 else if (dy > 1.0) | |
| 69 { | |
| 70 z = MAX_ZOOM; | |
| 71 } | |
| 72 else | |
| 73 { | |
| 74 z = MIN_ZOOM + (MAX_ZOOM - MIN_ZOOM) * (dy + 1.0) / 2.0; | |
| 75 } | |
| 76 | |
| 77 double zoom = pow(2.0, z); | |
| 78 | |
|
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
|
79 // 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
|
80 // 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
|
81 // context) |
|
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
|
82 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
|
83 { |
|
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
|
84 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
|
85 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
|
86 AffineTransform2D::CreateScaling(zoom, zoom), |
|
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
|
87 originalSceneToCanvas_)); |
| 596 | 88 |
|
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
|
89 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
|
90 } |
| 596 | 91 } |
| 92 } | |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
93 |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
94 void ZoomSceneTracker::Cancel() |
|
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
95 { |
|
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
|
96 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
|
97 { |
|
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
|
98 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
|
99 } |
|
700
059e1fd05fd6
Introduced the ViewportController that sits between the application and the
Benjamin Golinvaux <bgo@osimis.io>
parents:
617
diff
changeset
|
100 } |
| 596 | 101 } |