1 // File: SketchSolver_Constraint.cpp
2 // Created: 27 May 2014
3 // Author: Artem ZHIDKOV
5 #include "SketchSolver_Constraint.h"
6 #include <SketchSolver_Solver.h>
8 #include <SketchPlugin_Line.h>
9 #include <SketchPlugin_Point.h>
10 #include <SketchPlugin_Circle.h>
11 #include <SketchPlugin_Arc.h>
12 #include <SketchPlugin_ConstraintCoincidence.h>
13 #include <SketchPlugin_ConstraintDistance.h>
14 #include <SketchPlugin_ConstraintLength.h>
15 #include <SketchPlugin_ConstraintParallel.h>
16 #include <SketchPlugin_ConstraintPerpendicular.h>
17 #include <SketchPlugin_ConstraintRadius.h>
19 #include <ModelAPI_AttributeRefAttr.h>
20 #include <ModelAPI_Data.h>
21 #include <ModelAPI_Document.h>
22 #include <ModelAPI_Object.h>
23 #include <ModelAPI_ResultConstruction.h>
25 #include <GeomDataAPI_Point.h>
26 #include <GeomDataAPI_Point2D.h>
27 #include <GeomAPI_Edge.h>
28 #include <GeomAPI_Shape.h>
30 /// Possible types of attributes (used to determine constraint type)
33 UNKNOWN, // Something wrong during type determination
41 /// Calculate type of the attribute
42 static AttrType typeOfAttribute(boost::shared_ptr<ModelAPI_Attribute> theAttribute);
44 SketchSolver_Constraint::SketchSolver_Constraint()
45 : myConstraint(boost::shared_ptr<SketchPlugin_Constraint>()),
46 myType(SLVS_C_UNKNOWN),
51 SketchSolver_Constraint::SketchSolver_Constraint(
52 boost::shared_ptr<SketchPlugin_Constraint> theConstraint)
53 : myConstraint(theConstraint),
56 myType = getType(myConstraint);
59 const int& SketchSolver_Constraint::getType(
60 boost::shared_ptr<SketchPlugin_Constraint> theConstraint)
62 myType = SLVS_C_UNKNOWN;
66 DataPtr aConstrData = theConstraint->data();
67 if (!aConstrData || !aConstrData->isValid())
70 // Assign empty names of attributes
71 myAttributesList.clear();
72 for (int i = 0; i < CONSTRAINT_ATTR_SIZE; i++)
73 myAttributesList.push_back(std::string());
75 const std::string& aConstraintKind = theConstraint->getKind();
76 // Constraint for coincidence of two points
77 if (aConstraintKind.compare(SketchPlugin_ConstraintCoincidence::ID()) == 0) {
79 // Verify the constraint has only two attributes and they are points
80 int aPt2d = 0; // bit-mapped field, each bit indicates whether the attribute is 2D point
81 int aPt3d = 0; // bit-mapped field, the same information for 3D points
82 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
83 boost::shared_ptr<ModelAPI_Attribute> anAttr =
84 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
87 switch (typeOfAttribute(anAttr)) {
88 case POINT2D: // the attribute is a 2D point
89 aPt2d |= (1 << indAttr);
90 myAttributesList[anAttrPos++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
92 case POINT3D: // the attribute is a 3D point
93 aPt3d |= (1 << indAttr);
94 myAttributesList[anAttrPos++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
97 // Attribute neither 2D nor 3D point is not supported by this type of constraint
101 // The constrained points should be in first and second positions,
102 // so the expected value of aPt2d or aPt3d is 3
103 if ((aPt2d == 3 && aPt3d == 0) || (aPt2d == 0 && aPt3d == 3))
104 myType = SLVS_C_POINTS_COINCIDENT;
105 // Constraint parameters are wrong
109 // Constraint for distance between point and another entity
110 if (aConstraintKind.compare(SketchPlugin_ConstraintDistance::ID()) == 0) {
113 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
114 boost::shared_ptr<ModelAPI_Attribute> anAttr =
115 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
116 switch (typeOfAttribute(anAttr)) {
119 myAttributesList[aNbPoints++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
122 // entities are placed starting from SketchPlugin_Constraint::ENTITY_C() attribute
123 myAttributesList[2 + aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
124 myType = SLVS_C_PT_LINE_DISTANCE;
128 // Verify the correctness of constraint arguments
129 if (aNbPoints == 2 && aNbEntities == 0)
130 myType = SLVS_C_PT_PT_DISTANCE;
131 else if (aNbPoints != 1 || aNbEntities != 1)
132 myType = SLVS_C_UNKNOWN;
136 // Constraint for the given length of a line
137 if (aConstraintKind.compare(SketchPlugin_ConstraintLength::ID()) == 0) {
139 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
140 boost::shared_ptr<ModelAPI_Attribute> anAttr =
141 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
142 if (typeOfAttribute(anAttr) == LINE)
143 myAttributesList[aNbLines++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
146 myType = SLVS_C_PT_PT_DISTANCE;
150 // Constraint for two parallel/perpendicular lines
151 bool isParallel = (aConstraintKind.compare(SketchPlugin_ConstraintParallel::ID()) == 0);
152 bool isPerpendicular = (aConstraintKind.compare(SketchPlugin_ConstraintPerpendicular::ID()) == 0);
153 if (isParallel || isPerpendicular) {
154 int aNbEntities = 2; // lines in SolveSpace constraints should start from SketchPlugin_Constraint::ENTITY_C() attribute
155 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
156 boost::shared_ptr<ModelAPI_Attribute> anAttr =
157 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
158 if (typeOfAttribute(anAttr) == LINE)
159 myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
161 if (aNbEntities == 4)
162 myType = isParallel ? SLVS_C_PARALLEL : SLVS_C_PERPENDICULAR;
166 // Constraint for radius of a circle or an arc of circle
167 if (aConstraintKind.compare(SketchPlugin_ConstraintRadius::ID()) == 0) {
168 int aNbEntities = 2; // lines in SolveSpace constraints should started from SketchPlugin_Constraint::ENTITY_C() attribute
169 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
170 boost::shared_ptr<ModelAPI_Attribute> anAttr =
171 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
172 AttrType aType = typeOfAttribute(anAttr);
173 if (aType == CIRCLE || aType == ARC)
174 myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
176 if (aNbEntities == 3)
177 myType = SLVS_C_DIAMETER;
181 /// \todo Implement other kind of constraints
186 // ================= Auxiliary functions ==============================
187 AttrType typeOfAttribute(boost::shared_ptr<ModelAPI_Attribute> theAttribute)
189 boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttrRef = boost::dynamic_pointer_cast<
190 ModelAPI_AttributeRefAttr>(theAttribute);
194 if (anAttrRef->isObject()) {
195 ResultConstructionPtr aRC = boost::dynamic_pointer_cast<ModelAPI_ResultConstruction>(
196 anAttrRef->object());
197 if (!aRC || !aRC->shape())
200 if (aRC->shape()->isVertex())
202 else if (aRC->shape()->isEdge()) {
203 boost::shared_ptr<GeomAPI_Edge> anEdge = boost::dynamic_pointer_cast<GeomAPI_Edge>(
205 if (anEdge->isLine())
207 else if (anEdge->isCircle())
209 else if (anEdge->isArc())
213 const std::string aType = anAttrRef->attr()->attributeType();
214 if (aType == GeomDataAPI_Point2D::type())
216 if (aType == GeomDataAPI_Point2D::type())