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comparison Framework/Toolbox/ViewportGeometry.cpp @ 109:53bd9277b025 wasm

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using the Extent class
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 14 Jun 2017 15:34:08 +0200
parents 28956ed68280
children 7665ccbf33db
comparison
equal deleted inserted replaced
108:37d4ae7052a5 109:53bd9277b025
41 // Apply the zoom around (0,0) 41 // Apply the zoom around (0,0)
42 cairo_matrix_init_scale(&tmp, zoom_, zoom_); 42 cairo_matrix_init_scale(&tmp, zoom_, zoom_);
43 cairo_matrix_multiply(&transform_, &tmp, &transform_); 43 cairo_matrix_multiply(&transform_, &tmp, &transform_);
44 44
45 // Bring the center of the scene to (0,0) 45 // Bring the center of the scene to (0,0)
46 cairo_matrix_init_translate(&tmp, -(x1_ + x2_) / 2.0, -(y1_ + y2_) / 2.0); 46 cairo_matrix_init_translate(&tmp,
47 -(sceneExtent_.GetX1() + sceneExtent_.GetX2()) / 2.0,
48 -(sceneExtent_.GetY1() + sceneExtent_.GetY2()) / 2.0);
47 cairo_matrix_multiply(&transform_, &tmp, &transform_); 49 cairo_matrix_multiply(&transform_, &tmp, &transform_);
48 } 50 }
49 51
50 52
51 ViewportGeometry::ViewportGeometry() 53 ViewportGeometry::ViewportGeometry()
52 { 54 {
53 x1_ = 0;
54 y1_ = 0;
55 x2_ = 0;
56 y2_ = 0;
57
58 width_ = 0; 55 width_ = 0;
59 height_ = 0; 56 height_ = 0;
60 57
61 zoom_ = 1; 58 zoom_ = 1;
62 panX_ = 0; 59 panX_ = 0;
80 ComputeTransform(); 77 ComputeTransform();
81 } 78 }
82 } 79 }
83 80
84 81
85 void ViewportGeometry::SetSceneExtent(double x1, 82 void ViewportGeometry::SetSceneExtent(const Extent& extent)
86 double y1,
87 double x2,
88 double y2)
89 { 83 {
90 if (x1 == x1_ && 84 LOG(INFO) << "New scene extent: ("
91 y1 == y1_ && 85 << extent.GetX1() << "," << extent.GetY1() << ") => ("
92 x2 == x2_ && 86 << extent.GetX2() << "," << extent.GetY2() << ")";
93 y2 == y2_)
94 {
95 return;
96 }
97 else if (x1 > x2 ||
98 y1 > y2)
99 {
100 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
101 }
102 else
103 {
104 LOG(INFO) << "New scene extent: (" << x1 << "," << y1 << ") => (" << x2 << "," << y2 << ")";
105 87
106 x1_ = x1; 88 sceneExtent_ = extent;
107 y1_ = y1; 89 ComputeTransform();
108 x2_ = x2;
109 y2_ = y2;
110
111 ComputeTransform();
112 }
113 }
114
115
116 void ViewportGeometry::GetSceneExtent(double& x1,
117 double& y1,
118 double& x2,
119 double& y2) const
120 {
121 x1 = x1_;
122 y1 = y1_;
123 x2 = x2_;
124 y2 = y2_;
125 } 90 }
126 91
127 92
128 void ViewportGeometry::MapDisplayToScene(double& sceneX /* out */, 93 void ViewportGeometry::MapDisplayToScene(double& sceneX /* out */,
129 double& sceneY /* out */, 94 double& sceneY /* out */,
158 123
159 void ViewportGeometry::SetDefaultView() 124 void ViewportGeometry::SetDefaultView()
160 { 125 {
161 if (width_ > 0 && 126 if (width_ > 0 &&
162 height_ > 0 && 127 height_ > 0 &&
163 x2_ > x1_ + 10 * std::numeric_limits<double>::epsilon() && 128 !sceneExtent_.IsEmpty())
164 y2_ > y1_ + 10 * std::numeric_limits<double>::epsilon())
165 { 129 {
166 double zoomX = static_cast<double>(width_) / (x2_ - x1_); 130 double zoomX = static_cast<double>(width_) / (sceneExtent_.GetX2() - sceneExtent_.GetX1());
167 double zoomY = static_cast<double>(height_) / (y2_ - y1_); 131 double zoomY = static_cast<double>(height_) / (sceneExtent_.GetY2() - sceneExtent_.GetY1());
168 zoom_ = zoomX < zoomY ? zoomX : zoomY; 132 zoom_ = zoomX < zoomY ? zoomX : zoomY;
169 133
170 panX_ = 0; 134 panX_ = 0;
171 panY_ = 0; 135 panY_ = 0;
172 136