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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 #pragma once
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23
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24 namespace OrthancStone
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25 {
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26 /**
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27 This interface is implemented by objects representing 3D volume data and
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28 that are able to return an object that:
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29 - represent a slice of their data
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30 - are able to create the corresponding slice visual representation.
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31 */
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32 class IVolumeSlicer : public boost::noncopyable
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33 {
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34 public:
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35 /**
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36 This interface is implemented by objects representing a slice of
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37 volume data and that are able to create a 2D layer to display a this
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38 slice.
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39
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40 The CreateSceneLayer factory method is called with an optional
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41 configurator that possibly impacts the ISceneLayer subclass that is
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42 created (for instance, if a LUT must be applied on the texture when
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43 displaying it)
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44 */
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45 class IExtractedSlice : public boost::noncopyable
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46 {
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47 public:
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48 virtual ~IExtractedSlice()
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49 {
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50 }
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51
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52 /**
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53 Invalid slices are created when the data is not ready yet or if the
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54 cut is outside of the available geometry.
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55 */
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56 virtual bool IsValid() = 0;
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57
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58 /**
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59 This retrieves the *revision* that gets incremented every time the
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60 underlying object undergoes a mutable operation (that it, changes its
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61 state).
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62 This **must** be a cheap call.
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63 */
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64 virtual uint64_t GetRevision() = 0;
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65
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66 /** Creates the slice visual representation */
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67 virtual ISceneLayer* CreateSceneLayer(
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68 const ILayerStyleConfigurator* configurator, // possibly absent
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69 const CoordinateSystem3D& cuttingPlane) = 0;
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70 };
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71
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72 /**
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73 See IExtractedSlice.IsValid()
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74 */
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75 class InvalidSlice : public IExtractedSlice
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76 {
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77 public:
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78 virtual bool IsValid()
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79 {
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80 return false;
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81 }
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82
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83 virtual uint64_t GetRevision()
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84 {
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85 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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86 }
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87
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88 virtual ISceneLayer* CreateSceneLayer(const ILayerStyleConfigurator* configurator,
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89 const CoordinateSystem3D& cuttingPlane)
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90 {
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91 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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92 }
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93 };
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94
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95
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96 virtual ~IVolumeSlicer()
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97 {
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98 }
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99
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100 /**
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101 This method is implemented by the objects representing volumetric data
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102 and must returns an IExtractedSlice subclass that contains all the data
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103 needed to, later on, create its visual representation through
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104 CreateSceneLayer.
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105 Subclasses a.o.:
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106 - InvalidSlice,
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107 - DicomVolumeImageMPRSlicer::Slice,
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108 - DicomVolumeImageReslicer::Slice
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109 - DicomStructureSetLoader::Slice
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110 */
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111 virtual IExtractedSlice* ExtractSlice(const CoordinateSystem3D& cuttingPlane) = 0;
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112 };
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113 }
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