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[modules/shaper.git] / src / SketchPlugin / SketchPlugin_Line.cpp
1 // Copyright (C) 2014-2017  CEA/DEN, EDF R&D
2 //
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
7 //
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11 // Lesser General Public License for more details.
12 //
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 //
17 // See http://www.salome-platform.org/ or
18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
19 //
20
21 #include "SketchPlugin_Line.h"
22 #include "SketchPlugin_Sketch.h"
23 #include "SketchPlugin_ConstraintCoincidence.h"
24
25 #include <ModelAPI_Data.h>
26 #include <ModelAPI_EventReentrantMessage.h>
27 #include <ModelAPI_ResultConstruction.h>
28 #include <ModelAPI_AttributeSelection.h>
29 #include <ModelAPI_AttributeBoolean.h>
30 #include <ModelAPI_AttributeDouble.h>
31 #include <ModelAPI_Validator.h>
32 #include <ModelAPI_Session.h>
33
34 #include <GeomAPI_Pnt.h>
35 #include <GeomAPI_Lin2d.h>
36 #include <GeomAPI_Pnt2d.h>
37
38 #include <GeomAlgoAPI_EdgeBuilder.h>
39 #include <GeomDataAPI_Point2D.h>
40
41 SketchPlugin_Line::SketchPlugin_Line()
42     : SketchPlugin_SketchEntity()
43 {}
44
45 void SketchPlugin_Line::initAttributes()
46 {
47   SketchPlugin_SketchEntity::initAttributes();
48   /// new attributes should be added to end of the feature in order to provide
49   /// correct attribute values in previous saved studies
50   data()->addAttribute(LENGTH_ID(), ModelAPI_AttributeDouble::typeId());
51 }
52
53 void SketchPlugin_Line::initDerivedClassAttributes()
54 {
55   data()->addAttribute(START_ID(), GeomDataAPI_Point2D::typeId());
56   data()->addAttribute(END_ID(), GeomDataAPI_Point2D::typeId());
57   data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
58   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
59 }
60
61 void SketchPlugin_Line::execute()
62 {
63   SketchPlugin_Sketch* aSketch = sketch();
64   if (aSketch) {
65     // compute a start point in 3D view
66     std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
67         GeomDataAPI_Point2D>(data()->attribute(START_ID()));
68     // compute an end point in 3D view
69     std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
70         GeomDataAPI_Point2D>(data()->attribute(END_ID()));
71     if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
72       std::shared_ptr<GeomAPI_Pnt> aStart(aSketch->to3D(aStartAttr->x(), aStartAttr->y()));
73       std::shared_ptr<GeomAPI_Pnt> anEnd(aSketch->to3D(anEndAttr->x(), anEndAttr->y()));
74       //std::cout<<"Execute line "<<aStart->x()<<" "<<aStart->y()<<" "<<aStart->z()<<" - "
75       //  <<anEnd->x()<<" "<<anEnd->y()<<" "<<anEnd->z()<<std::endl;
76       // make linear edge
77       std::shared_ptr<GeomAPI_Edge> anEdge = GeomAlgoAPI_EdgeBuilder::line(aStart, anEnd);
78       // store the result
79       std::shared_ptr<ModelAPI_ResultConstruction> aConstr = document()->createConstruction(
80           data());
81       aConstr->setShape(anEdge);
82       aConstr->setIsInHistory(false);
83       setResult(aConstr);
84
85       static Events_ID anId = ModelAPI_EventReentrantMessage::eventId();
86       std::shared_ptr<ModelAPI_EventReentrantMessage> aMessage = std::shared_ptr
87           <ModelAPI_EventReentrantMessage>(new ModelAPI_EventReentrantMessage(anId, this));
88       aMessage->setCreatedFeature(ModelAPI_Feature::feature(
89                                   data()->attribute(START_ID())->owner()));
90       Events_Loop::loop()->send(aMessage);
91     }
92   }
93 }
94
95 std::string SketchPlugin_Line::processEvent(const std::shared_ptr<Events_Message>& theMessage)
96 {
97   std::string aFilledAttributeName;
98
99   std::shared_ptr<ModelAPI_EventReentrantMessage> aReentrantMessage =
100         std::dynamic_pointer_cast<ModelAPI_EventReentrantMessage>(theMessage);
101   if (aReentrantMessage.get()) {
102     FeaturePtr aCreatedFeature = aReentrantMessage->createdFeature();
103
104     // Initialize new line with first point equal to end of previous
105     std::shared_ptr<ModelAPI_Data> aSFData = aCreatedFeature->data();
106     std::shared_ptr<GeomDataAPI_Point2D> aSPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
107                                                  aSFData->attribute(SketchPlugin_Line::END_ID()));
108     std::shared_ptr<ModelAPI_Data> aNFData = data();
109     std::shared_ptr<GeomDataAPI_Point2D> aNPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
110                                                  aNFData->attribute(SketchPlugin_Line::START_ID()));
111     aNPoint->setValue(aSPoint->x(), aSPoint->y());
112     SketchPlugin_ConstraintCoincidence::createCoincidenceFeature(sketch(), aSPoint, aNPoint);
113   }
114   return aFilledAttributeName;
115 }
116
117 double SketchPlugin_Line::distanceToPoint(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
118 {
119   double aDelta = 0;
120
121   std::shared_ptr<ModelAPI_Data> aData = data();
122   std::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
123     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(START_ID()));
124   std::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
125     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(END_ID()));
126
127   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
128
129   if (false/*projection*/) {  // TODO: if it has not been necessary, remove this block
130     std::shared_ptr<GeomAPI_Pnt2d> aResult = aLin2d.project(thePoint);
131     aDelta = aResult->distance(thePoint);
132   } else {  // distance
133     aDelta = aLin2d.distance(thePoint);
134   }
135
136   return aDelta;
137 }
138
139 const std::string& SketchPlugin_Line::getKind()
140 {
141   static std::string MY_KIND = SketchPlugin_Line::ID();
142   return MY_KIND;
143 }
144
145 bool SketchPlugin_Line::isFixed() {
146   return data()->selection(EXTERNAL_ID())->context().get() != NULL;
147 }
148
149 void SketchPlugin_Line::attributeChanged(const std::string& theID) {
150   // the second condition for unability to move external segments anywhere
151   // isCopy() is checked temporary for case when copied lines stored external id state
152   // to be removed after debug
153   if ((theID == EXTERNAL_ID() || isFixed()) && !isCopy()) {
154     std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
155     if (!aSelection) {
156       // empty shape in selection shows that the shape is equal to context
157       ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
158       if (anExtRes)
159         aSelection = anExtRes->shape();
160     }
161     // update arguments due to the selection value
162     if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
163       std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
164       std::shared_ptr<GeomDataAPI_Point2D> aStartAttr =
165         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(START_ID()));
166       aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
167       std::shared_ptr<GeomDataAPI_Point2D> anEndAttr =
168         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(END_ID()));
169       anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
170       updateLenghtValue();
171     }
172   }
173   else if (theID == START_ID() || theID == END_ID()) {
174     updateLenghtValue();
175   }
176 }
177
178 void SketchPlugin_Line::updateLenghtValue()
179 {
180   std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
181       GeomDataAPI_Point2D>(data()->attribute(START_ID()));
182   std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
183       GeomDataAPI_Point2D>(data()->attribute(END_ID()));
184   if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
185     double aDistance = aStartAttr->pnt()->distance(anEndAttr->pnt());
186     data()->real(LENGTH_ID())->setValue(aDistance);
187   }
188 }