RulerPlugin.cc 11.7 KB
Newer Older
Matthias Möller's avatar
Matthias Möller committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
/*===========================================================================*\
*                                                                            *
*                              OpenFlipper                                   *
*      Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen       *
*                           www.openflipper.org                              *
*                                                                            *
*--------------------------------------------------------------------------- *
*  This file is part of OpenFlipper.                                         *
*                                                                            *
*  OpenFlipper is free software: you can redistribute it and/or modify       *
*  it under the terms of the GNU Lesser General Public License as            *
*  published by the Free Software Foundation, either version 3 of            *
*  the License, or (at your option) any later version with the               *
*  following exceptions:                                                     *
*                                                                            *
*  If other files instantiate templates or use macros                        *
*  or inline functions from this file, or you compile this file and          *
*  link it with other files to produce an executable, this file does         *
*  not by itself cause the resulting executable to be covered by the         *
*  GNU Lesser General Public License. This exception does not however        *
*  invalidate any other reasons why the executable file might be             *
*  covered by the GNU Lesser General Public License.                         *
*                                                                            *
*  OpenFlipper is distributed in the hope that it will be useful,            *
*  but WITHOUT ANY WARRANTY; without even the implied warranty of            *
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
*  GNU Lesser General Public License for more details.                       *
*                                                                            *
*  You should have received a copy of the GNU LesserGeneral Public           *
*  License along with OpenFlipper. If not,                                   *
*  see <http://www.gnu.org/licenses/>.                                       *
*                                                                            *
\*===========================================================================*/

/*===========================================================================*\
*                                                                            *
Matthias Möller's avatar
Matthias Möller committed
37
38
39
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
Matthias Möller's avatar
Matthias Möller committed
40
41
42
43
44
45
46
*                                                                            *
\*===========================================================================*/


#include "RulerPlugin.hh"

#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
Matthias Möller's avatar
Matthias Möller committed
47
#include <OpenFlipper/common/GlobalOptions.hh>
Matthias Möller's avatar
Matthias Möller committed
48
49
50
51
52
53

//------------------------------------------------------------------------------
RulerPlugin::RulerPlugin()
:
buttonAction_(0),
pickModeName_("MeasureDistance"),
54
lineDrag_(-1),
Matthias Möller's avatar
Matthias Möller committed
55
56
57
dblClickCheck_(false),
optionsWidget_(0),
textSizeSettingName_(name()+QString("/TextSize"))
Matthias Möller's avatar
Matthias Möller committed
58
59
60
61
62
63
64
{

}

//------------------------------------------------------------------------------
RulerPlugin::~RulerPlugin()
{
65
  reset();
Matthias Möller's avatar
Matthias Möller committed
66
67
68
69
}
//------------------------------------------------------------------------------
void RulerPlugin::initializePlugin()
{
70
  QToolBar *button = new QToolBar("Ruler");
Matthias Möller's avatar
Matthias Möller committed
71
72
73
74
75
76

  buttonAction_ = new QAction(tr("<B>Ruler</B><br> Display the distance between two points."),this);

  button->addAction(buttonAction_);
  buttonAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"ruler.png"));
  buttonAction_->setCheckable(true);
Matthias Möller's avatar
Matthias Möller committed
77
78
  WhatsThisGenerator whatsThisGen("Ruler");
  whatsThisGen.setWhatsThis(buttonAction_,tr("Measures the distance between two points.<br><b>LeftClick</b>: define/change the position.<br><b>DoubleClick</b>: reset the ruler.<br>"));
Matthias Möller's avatar
Matthias Möller committed
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94

  buttonAction_->setChecked(false);

  connect(buttonAction_,SIGNAL(triggered()), this , SLOT(slotChangePickMode()) );
  emit addToolbar(button);
}

//------------------------------------------------------------------------------
void RulerPlugin::pluginsInitialized()
{
  emit addPickMode(pickModeName_);
}

//------------------------------------------------------------------------------
void RulerPlugin::slotMouseEvent(QMouseEvent* _event)
{
95
96
  if ( PluginFunctions::pickMode() != pickModeName_)
    return;
Matthias Möller's avatar
doc    
Matthias Möller committed
97

98
99
//////create or change ruler/////////
//set one of the points, depending on the hit state (first, second or modifying)
100
101
102
103
  if (_event->type() == QEvent::MouseButtonRelease )
  {
    unsigned int node_idx, target_idx;
    OpenMesh::Vec3d hitPoint;
Matthias Möller's avatar
Matthias Möller committed
104

105
106
107
    // Get picked object's identifier by picking in scenegraph
    if ( PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_ANYTHING ,_event->pos(), node_idx, target_idx, &hitPoint) && !dblClickCheck_)
    {
108
      if (!currentRuler_)
109
      {
110
        //create a new Ruler
111
112
        BaseObjectData* object;
        if ( PluginFunctions::getPickedObject(node_idx, object) )
Matthias Möller's avatar
Matthias Möller committed
113
        {
114
115
          currentRuler_.reset(new Ruler(object,name(),0));
          connect(currentRuler_.get(),SIGNAL(updateView()),this,SIGNAL(updateView()));
116
          unsigned textSize = OpenFlipperSettings().value(textSizeSettingName_,16).toUInt();
Matthias Möller's avatar
Matthias Möller committed
117
          currentRuler_->setTextSize(textSize);
118
119
120
          currentRuler_->setPoints(hitPoint,hitPoint);
          enableDragMode(1);
        }
Matthias Möller's avatar
Matthias Möller committed
121

122
      }
123
      else
124
      {
125
126
        //Ruler was created -> change position of a point
        if (!dragModeActive())
Matthias Möller's avatar
Matthias Möller committed
127
        {
128
129
130
131
132
          //dragmode is disabled ->  update position of nearest point
          float distToStart = (currentRuler_->points()[0] - hitPoint).length();
          float distToEnd = (currentRuler_->points()[1] - hitPoint).length();
          if (distToStart < distToEnd)
            currentRuler_->setStartPoint(hitPoint);
Matthias Möller's avatar
Matthias Möller committed
133
          else
134
            currentRuler_->setEndPoint(hitPoint);
Matthias Möller's avatar
Matthias Möller committed
135
        }
136
137
        else
        {
138
139
140
141
142
          //second: drag mode is enabled so we can easily update the position
          if (lineDrag_ == 0)
            currentRuler_->setStartPoint(hitPoint);
          else
            currentRuler_->setEndPoint(hitPoint);
143
144
          disableDragMode();
        }
Matthias Möller's avatar
Matthias Möller committed
145
146
      }
    }
147
148
149
150
151
    else // if nothing was picked
    {
      reset();
    }
  }
152
153

//////enable drag mode//////
154
155
  else if (_event->type() == QEvent::MouseButtonPress)
  {//enable drag mode
Matthias Möller's avatar
doc    
Matthias Möller committed
156

157
    if (currentRuler_)
158
159
160
    {
      //decides which point is the nearest one, so
      //it can be dragged
Matthias Möller's avatar
Matthias Möller committed
161
162
163
164
      unsigned int node_idx, target_idx;
      OpenMesh::Vec3d hitPoint;

      // Get picked object's identifier by picking in scenegraph
165
      if ( PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_ANYTHING ,_event->pos(), node_idx, target_idx, &hitPoint) )
Matthias Möller's avatar
Matthias Möller committed
166
      {
167
168
169
        float distToStart = (currentRuler_->points()[0] - hitPoint).length();
        float distToEnd = (currentRuler_->points()[1] - hitPoint).length();
        enableDragMode( (distToStart < distToEnd)? 0 : 1);
Matthias Möller's avatar
Matthias Möller committed
170
171
      }
    }
172
  }
173
174
////////modify ruler of drag mode was enabled/////////
  else if (_event->type() == QEvent::MouseMove && dragModeActive())
175
176
177
178
  {//mouse moved and drag mode is enabled

    unsigned int node_idx, target_idx;
    OpenMesh::Vec3d hitPoint;
179
180
    ACG::Vec3d hitPoints[2];
    std::copy(currentRuler_->points(),currentRuler_->points()+2,hitPoints);
Matthias Möller's avatar
Matthias Möller committed
181

182
183
184
185
186
187
188
    // Get picked object's identifier by picking in scenegraph
    if ( !PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_ANYTHING ,_event->pos(), node_idx, target_idx, &hitPoint) )
    {
      //if mouse is not over an object, get the unprojected coordinates and the last z-value
      QPoint position = _event->pos();
      ACG::Vec3d viewCoords = ACG::Vec3d(position.x(), PluginFunctions::viewerProperties().glState().context_height() - position.y(), 0.5);
      hitPoint = PluginFunctions::viewerProperties().glState().unproject(viewCoords);
189
      hitPoints[lineDrag_] = ACG::Vec3d(hitPoint.data()[0], hitPoint.data()[1], hitPoints[lineDrag_].data()[2] );
190
191
    }
    else
192
193
194
      hitPoints[lineDrag_] = hitPoint;

    currentRuler_->setPoints(hitPoints[0],hitPoints[1]);
195
  }
196

197
///////////////////////Reset/////////////////////////////////
198
199
200
201
  else if (_event->type() == QEvent::MouseButtonDblClick)
  {//reset
    reset();
    dblClickCheck_ = true;
Matthias Möller's avatar
Matthias Möller committed
202
  }
203
204
  if (dblClickCheck_ && _event->type() == QEvent::MouseButtonRelease)
    dblClickCheck_ = false;
Matthias Möller's avatar
Matthias Möller committed
205
206
207
208
209
}

//------------------------------------------------------------------------------
void RulerPlugin::reset()
{
210
  currentRuler_.reset();
211
  lineDrag_ = -1;
Matthias Möller's avatar
Matthias Möller committed
212
}
213
214
215
216
217
218
219
220
221
222
223
224
225
//------------------------------------------------------------------------------
void RulerPlugin::enableDragMode(const int _point)
{
  lineDrag_ = _point;
  emit setPickModeMouseTracking(pickModeName_,true);
}

//------------------------------------------------------------------------------
void RulerPlugin::disableDragMode()
{
  lineDrag_ = -1;
  emit setPickModeMouseTracking(pickModeName_,false);
}
Matthias Möller's avatar
Matthias Möller committed
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240

//------------------------------------------------------------------------------
void RulerPlugin::slotChangePickMode()
{
  PluginFunctions::actionMode( Viewer::PickingMode );
  PluginFunctions::pickMode(pickModeName_);

}

//------------------------------------------------------------------------------
void RulerPlugin::slotPickModeChanged(const std::string& _mode)
{
  buttonAction_->setChecked(_mode == pickModeName_);
}

241
242
243
//------------------------------------------------------------------------------
void RulerPlugin::slotAllCleared()
{
244
245
246
247
248
249
250
  disableDragMode();
}

void RulerPlugin::objectDeleted(int _id)
{
  if (!currentRuler_)
    return;
251

252
253
254
255
256
257
  disableDragMode();
  if (_id == currentRuler_->getBaseObj()->id())
  {
    disconnect(currentRuler_.get(),SIGNAL(updateView()),this,SIGNAL(updateView()));
    currentRuler_.reset();
  }
258
}
Matthias Möller's avatar
Matthias Möller committed
259
260
261
262
263
264
265
266
//------------------------------------------------------------------------------
bool RulerPlugin::initializeOptionsWidget(QWidget*& _widget)
{
  if (!optionsWidget_)
  {
    optionsWidget_ = new RulerOptions();
  }

267
  unsigned textSize = OpenFlipperSettings().value(textSizeSettingName_,16).toUInt();
Matthias Möller's avatar
Matthias Möller committed
268
269
270
271
272
273
274
275
276
277
278
279
  optionsWidget_->textSizeSpinBox->setValue(textSize);
  _widget = optionsWidget_;
  return true;
}
//------------------------------------------------------------------------------
void RulerPlugin::applyOptions()
{
  int textSize = optionsWidget_->textSizeSpinBox->value();
  if (currentRuler_)
    currentRuler_->setTextSize(textSize);
  OpenFlipperSettings().setValue(textSizeSettingName_,textSize);
}
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
//------------------------------------------------------------------------------
void RulerPlugin::slotViewChanged()
{

  if (!currentRuler_)
    return;

  //compute line direction
  ACG::Vec3d lineVector = currentRuler_->points()[0] - currentRuler_->points()[1];
  ACG::Vec3d rightVec = (PluginFunctions::viewingDirection() % -PluginFunctions::upVector()).normalize();

  float cosAngleLineRight = lineVector.normalize() | rightVec;
  float cosAngleUpLine = PluginFunctions::upVector().normalized() | lineVector.normalized() ;


  rightVec *= -0.5f*currentRuler_->textScale();
  ACG::Vec3d updownVec = PluginFunctions::upVector()*currentRuler_->textScale();

  //compute up/down offset
  if (cosAngleLineRight > 0.f)
  {
    updownVec *= (cosAngleUpLine < 0.f) ? -2.f : 0.5f;
  }
  else
  {
    updownVec *= (cosAngleUpLine < 0.f) ? 0.5f : -2.0f;
  }

  // small offset to the right and big offset up/down depending on the line
  currentRuler_->setTextOffset(rightVec+updownVec);


}
313

Matthias Möller's avatar
Matthias Möller committed
314
315
316
317
#if QT_VERSION < 0x050000
  Q_EXPORT_PLUGIN2( rulerPlugin , RulerPlugin );
#endif