1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
---|
2 | /* |
---|
3 | * Copyright (C) 2011, Purdue Research Foundation |
---|
4 | * |
---|
5 | * Author: Leif Delgass <ldelgass@purdue.edu> |
---|
6 | */ |
---|
7 | |
---|
8 | #include <cassert> |
---|
9 | |
---|
10 | #include <vtkDataSet.h> |
---|
11 | #include <vtkPointData.h> |
---|
12 | #include <vtkCellData.h> |
---|
13 | #include <vtkCellDataToPointData.h> |
---|
14 | #include <vtkContourFilter.h> |
---|
15 | #include <vtkPolyDataMapper.h> |
---|
16 | #include <vtkUnstructuredGrid.h> |
---|
17 | #include <vtkProperty.h> |
---|
18 | #include <vtkDelaunay2D.h> |
---|
19 | #include <vtkDelaunay3D.h> |
---|
20 | #include <vtkDataSetSurfaceFilter.h> |
---|
21 | |
---|
22 | #include "RpContour2D.h" |
---|
23 | #include "Trace.h" |
---|
24 | |
---|
25 | using namespace Rappture::VtkVis; |
---|
26 | |
---|
27 | Contour2D::Contour2D() : |
---|
28 | _dataSet(NULL), |
---|
29 | _numContours(0), |
---|
30 | _edgeWidth(1.0f), |
---|
31 | _opacity(1.0) |
---|
32 | { |
---|
33 | _dataRange[0] = 0; |
---|
34 | _dataRange[1] = 1; |
---|
35 | _edgeColor[0] = 0; |
---|
36 | _edgeColor[1] = 0; |
---|
37 | _edgeColor[2] = 0; |
---|
38 | } |
---|
39 | |
---|
40 | Contour2D::~Contour2D() |
---|
41 | { |
---|
42 | #ifdef WANT_TRACE |
---|
43 | if (_dataSet != NULL) |
---|
44 | TRACE("Deleting Contour2D for %s", _dataSet->getName().c_str()); |
---|
45 | else |
---|
46 | TRACE("Deleting Contour2D with NULL DataSet"); |
---|
47 | #endif |
---|
48 | } |
---|
49 | |
---|
50 | /** |
---|
51 | * \brief Specify input DataSet used to extract contours |
---|
52 | */ |
---|
53 | void Contour2D::setDataSet(DataSet *dataSet) |
---|
54 | { |
---|
55 | if (_dataSet != dataSet) { |
---|
56 | _dataSet = dataSet; |
---|
57 | |
---|
58 | if (_dataSet != NULL) { |
---|
59 | double dataRange[2]; |
---|
60 | _dataSet->getDataRange(dataRange); |
---|
61 | _dataRange[0] = dataRange[0]; |
---|
62 | _dataRange[1] = dataRange[1]; |
---|
63 | } |
---|
64 | |
---|
65 | update(); |
---|
66 | } |
---|
67 | } |
---|
68 | |
---|
69 | /** |
---|
70 | * \brief Returns the DataSet this Contour2D renders |
---|
71 | */ |
---|
72 | DataSet *Contour2D::getDataSet() |
---|
73 | { |
---|
74 | return _dataSet; |
---|
75 | } |
---|
76 | |
---|
77 | /** |
---|
78 | * \brief Get the VTK Prop for the contour lines |
---|
79 | */ |
---|
80 | vtkProp *Contour2D::getProp() |
---|
81 | { |
---|
82 | return _contourActor; |
---|
83 | } |
---|
84 | |
---|
85 | /** |
---|
86 | * \brief Create and initialize a VTK Prop to render isolines |
---|
87 | */ |
---|
88 | void Contour2D::initProp() |
---|
89 | { |
---|
90 | if (_contourActor == NULL) { |
---|
91 | _contourActor = vtkSmartPointer<vtkActor>::New(); |
---|
92 | _contourActor->GetProperty()->EdgeVisibilityOn(); |
---|
93 | _contourActor->GetProperty()->SetEdgeColor(_edgeColor[0], _edgeColor[1], _edgeColor[2]); |
---|
94 | _contourActor->GetProperty()->SetLineWidth(_edgeWidth); |
---|
95 | _contourActor->GetProperty()->SetOpacity(_opacity); |
---|
96 | _contourActor->GetProperty()->LightingOff(); |
---|
97 | } |
---|
98 | } |
---|
99 | |
---|
100 | /** |
---|
101 | * \brief Internal method to re-compute contours after a state change |
---|
102 | */ |
---|
103 | void Contour2D::update() |
---|
104 | { |
---|
105 | if (_dataSet == NULL) { |
---|
106 | return; |
---|
107 | } |
---|
108 | vtkDataSet *ds = _dataSet->getVtkDataSet(); |
---|
109 | |
---|
110 | initProp(); |
---|
111 | |
---|
112 | // Contour filter to generate isolines |
---|
113 | if (_contourFilter == NULL) { |
---|
114 | _contourFilter = vtkSmartPointer<vtkContourFilter>::New(); |
---|
115 | } |
---|
116 | |
---|
117 | vtkSmartPointer<vtkCellDataToPointData> cellToPtData; |
---|
118 | |
---|
119 | if (ds->GetPointData() == NULL || |
---|
120 | ds->GetPointData()->GetScalars() == NULL) { |
---|
121 | WARN("No scalar point data in dataset %s", _dataSet->getName().c_str()); |
---|
122 | if (ds->GetCellData() != NULL && |
---|
123 | ds->GetCellData()->GetScalars() != NULL) { |
---|
124 | cellToPtData = |
---|
125 | vtkSmartPointer<vtkCellDataToPointData>::New(); |
---|
126 | cellToPtData->SetInput(ds); |
---|
127 | //cellToPtData->PassCellDataOn(); |
---|
128 | cellToPtData->Update(); |
---|
129 | ds = cellToPtData->GetOutput(); |
---|
130 | } else { |
---|
131 | ERROR("No scalar cell data in dataset %s", _dataSet->getName().c_str()); |
---|
132 | } |
---|
133 | } |
---|
134 | |
---|
135 | vtkPolyData *pd = vtkPolyData::SafeDownCast(ds); |
---|
136 | if (pd) { |
---|
137 | // DataSet is a vtkPolyData |
---|
138 | if (pd->GetNumberOfLines() == 0 && |
---|
139 | pd->GetNumberOfPolys() == 0 && |
---|
140 | pd->GetNumberOfStrips() == 0) { |
---|
141 | // DataSet is a point cloud |
---|
142 | if (_dataSet->is2D()) { |
---|
143 | vtkSmartPointer<vtkDelaunay2D> mesher = vtkSmartPointer<vtkDelaunay2D>::New(); |
---|
144 | mesher->SetInput(pd); |
---|
145 | _contourFilter->SetInputConnection(mesher->GetOutputPort()); |
---|
146 | } else { |
---|
147 | vtkSmartPointer<vtkDelaunay3D> mesher = vtkSmartPointer<vtkDelaunay3D>::New(); |
---|
148 | mesher->SetInput(pd); |
---|
149 | vtkSmartPointer<vtkDataSetSurfaceFilter> gf = vtkSmartPointer<vtkDataSetSurfaceFilter>::New(); |
---|
150 | gf->SetInputConnection(mesher->GetOutputPort()); |
---|
151 | _contourFilter->SetInputConnection(gf->GetOutputPort()); |
---|
152 | } |
---|
153 | } else { |
---|
154 | // DataSet is a vtkPolyData with lines and/or polygons |
---|
155 | _contourFilter->SetInput(ds); |
---|
156 | } |
---|
157 | } else { |
---|
158 | TRACE("Generating surface for data set"); |
---|
159 | // DataSet is NOT a vtkPolyData |
---|
160 | vtkSmartPointer<vtkDataSetSurfaceFilter> gf = vtkSmartPointer<vtkDataSetSurfaceFilter>::New(); |
---|
161 | gf->SetInput(ds); |
---|
162 | _contourFilter->SetInputConnection(gf->GetOutputPort()); |
---|
163 | } |
---|
164 | |
---|
165 | _contourFilter->ComputeNormalsOff(); |
---|
166 | _contourFilter->ComputeGradientsOff(); |
---|
167 | |
---|
168 | // Speed up multiple contour computation at cost of extra memory use |
---|
169 | if (_numContours > 1) { |
---|
170 | _contourFilter->UseScalarTreeOn(); |
---|
171 | } else { |
---|
172 | _contourFilter->UseScalarTreeOff(); |
---|
173 | } |
---|
174 | |
---|
175 | _contourFilter->SetNumberOfContours(_numContours); |
---|
176 | |
---|
177 | if (_contours.empty()) { |
---|
178 | // Evenly spaced isovalues |
---|
179 | _contourFilter->GenerateValues(_numContours, _dataRange[0], _dataRange[1]); |
---|
180 | } else { |
---|
181 | // User-supplied isovalues |
---|
182 | for (int i = 0; i < _numContours; i++) { |
---|
183 | _contourFilter->SetValue(i, _contours[i]); |
---|
184 | } |
---|
185 | } |
---|
186 | if (_contourMapper == NULL) { |
---|
187 | _contourMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); |
---|
188 | _contourMapper->SetResolveCoincidentTopologyToPolygonOffset(); |
---|
189 | _contourMapper->SetInputConnection(_contourFilter->GetOutputPort()); |
---|
190 | _contourActor->SetMapper(_contourMapper); |
---|
191 | } |
---|
192 | |
---|
193 | _contourMapper->Update(); |
---|
194 | } |
---|
195 | |
---|
196 | /** |
---|
197 | * \brief Specify number of evenly spaced contour lines to render |
---|
198 | * |
---|
199 | * Will override any existing contours |
---|
200 | */ |
---|
201 | void Contour2D::setContours(int numContours) |
---|
202 | { |
---|
203 | _contours.clear(); |
---|
204 | _numContours = numContours; |
---|
205 | |
---|
206 | if (_dataSet != NULL) { |
---|
207 | double dataRange[2]; |
---|
208 | _dataSet->getDataRange(dataRange); |
---|
209 | _dataRange[0] = dataRange[0]; |
---|
210 | _dataRange[1] = dataRange[1]; |
---|
211 | } |
---|
212 | |
---|
213 | update(); |
---|
214 | } |
---|
215 | |
---|
216 | /** |
---|
217 | * \brief Specify number of evenly spaced contour lines to render |
---|
218 | * between the given range (including range endpoints) |
---|
219 | * |
---|
220 | * Will override any existing contours |
---|
221 | */ |
---|
222 | void Contour2D::setContours(int numContours, double range[2]) |
---|
223 | { |
---|
224 | _contours.clear(); |
---|
225 | _numContours = numContours; |
---|
226 | |
---|
227 | _dataRange[0] = range[0]; |
---|
228 | _dataRange[1] = range[1]; |
---|
229 | |
---|
230 | update(); |
---|
231 | } |
---|
232 | |
---|
233 | /** |
---|
234 | * \brief Specify an explicit list of contour isovalues |
---|
235 | * |
---|
236 | * Will override any existing contours |
---|
237 | */ |
---|
238 | void Contour2D::setContourList(const std::vector<double>& contours) |
---|
239 | { |
---|
240 | _contours = contours; |
---|
241 | _numContours = (int)_contours.size(); |
---|
242 | |
---|
243 | update(); |
---|
244 | } |
---|
245 | |
---|
246 | /** |
---|
247 | * \brief Get the number of contours |
---|
248 | */ |
---|
249 | int Contour2D::getNumContours() const |
---|
250 | { |
---|
251 | return _numContours; |
---|
252 | } |
---|
253 | |
---|
254 | /** |
---|
255 | * \brief Get the contour list (may be empty if number of contours |
---|
256 | * was specified in place of a list) |
---|
257 | */ |
---|
258 | const std::vector<double>& Contour2D::getContourList() const |
---|
259 | { |
---|
260 | return _contours; |
---|
261 | } |
---|
262 | |
---|
263 | /** |
---|
264 | * \brief Turn on/off rendering of this contour set |
---|
265 | */ |
---|
266 | void Contour2D::setVisibility(bool state) |
---|
267 | { |
---|
268 | if (_contourActor != NULL) { |
---|
269 | _contourActor->SetVisibility((state ? 1 : 0)); |
---|
270 | } |
---|
271 | } |
---|
272 | |
---|
273 | /** |
---|
274 | * \brief Get visibility state of the contour set |
---|
275 | * |
---|
276 | * \return Is contour set visible? |
---|
277 | */ |
---|
278 | bool Contour2D::getVisibility() const |
---|
279 | { |
---|
280 | if (_contourActor == NULL) { |
---|
281 | return false; |
---|
282 | } else { |
---|
283 | return (_contourActor->GetVisibility() != 0); |
---|
284 | } |
---|
285 | } |
---|
286 | |
---|
287 | /** |
---|
288 | * \brief Set opacity used to render contour lines |
---|
289 | */ |
---|
290 | void Contour2D::setOpacity(double opacity) |
---|
291 | { |
---|
292 | _opacity = opacity; |
---|
293 | if (_contourActor != NULL) |
---|
294 | _contourActor->GetProperty()->SetOpacity(opacity); |
---|
295 | } |
---|
296 | |
---|
297 | /** |
---|
298 | * \brief Set RGB color of contour lines |
---|
299 | */ |
---|
300 | void Contour2D::setEdgeColor(float color[3]) |
---|
301 | { |
---|
302 | _edgeColor[0] = color[0]; |
---|
303 | _edgeColor[1] = color[1]; |
---|
304 | _edgeColor[2] = color[2]; |
---|
305 | if (_contourActor != NULL) |
---|
306 | _contourActor->GetProperty()->SetEdgeColor(_edgeColor[0], _edgeColor[1], _edgeColor[2]); |
---|
307 | } |
---|
308 | |
---|
309 | /** |
---|
310 | * \brief Set pixel width of contour lines (may be a no-op) |
---|
311 | */ |
---|
312 | void Contour2D::setEdgeWidth(float edgeWidth) |
---|
313 | { |
---|
314 | _edgeWidth = edgeWidth; |
---|
315 | if (_contourActor != NULL) |
---|
316 | _contourActor->GetProperty()->SetLineWidth(_edgeWidth); |
---|
317 | } |
---|
318 | |
---|
319 | /** |
---|
320 | * \brief Set a group of world coordinate planes to clip rendering |
---|
321 | * |
---|
322 | * Passing NULL for planes will remove all cliping planes |
---|
323 | */ |
---|
324 | void Contour2D::setClippingPlanes(vtkPlaneCollection *planes) |
---|
325 | { |
---|
326 | if (_contourMapper != NULL) { |
---|
327 | _contourMapper->SetClippingPlanes(planes); |
---|
328 | } |
---|
329 | } |
---|
330 | |
---|
331 | /** |
---|
332 | * \brief Turn on/off lighting of this object |
---|
333 | */ |
---|
334 | void Contour2D::setLighting(bool state) |
---|
335 | { |
---|
336 | if (_contourActor != NULL) |
---|
337 | _contourActor->GetProperty()->SetLighting((state ? 1 : 0)); |
---|
338 | } |
---|