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 // Assign empty names of attributes
67 myAttributesList.clear();
68 for (int i = 0; i < CONSTRAINT_ATTR_SIZE; i++)
69 myAttributesList.push_back(std::string());
71 const std::string& aConstraintKind = theConstraint->getKind();
72 // Constraint for coincidence of two points
73 if (aConstraintKind.compare(SketchPlugin_ConstraintCoincidence::ID()) == 0) {
75 // Verify the constraint has only two attributes and they are points
76 int aPt2d = 0; // bit-mapped field, each bit indicates whether the attribute is 2D point
77 int aPt3d = 0; // bit-mapped field, the same information for 3D points
78 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
79 boost::shared_ptr<ModelAPI_Attribute> anAttr = theConstraint->data()->attribute(
80 SketchPlugin_Constraint::ATTRIBUTE(indAttr));
83 switch (typeOfAttribute(anAttr)) {
84 case POINT2D: // the attribute is a 2D point
85 aPt2d |= (1 << indAttr);
86 myAttributesList[anAttrPos++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
88 case POINT3D: // the attribute is a 3D point
89 aPt3d |= (1 << indAttr);
90 myAttributesList[anAttrPos++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
93 // Attribute neither 2D nor 3D point is not supported by this type of constraint
97 // The constrained points should be in first and second positions,
98 // so the expected value of aPt2d or aPt3d is 3
99 if ((aPt2d == 3 && aPt3d == 0) || (aPt2d == 0 && aPt3d == 3))
100 myType = SLVS_C_POINTS_COINCIDENT;
101 // Constraint parameters are wrong
105 // Constraint for distance between point and another entity
106 if (aConstraintKind.compare(SketchPlugin_ConstraintDistance::ID()) == 0) {
109 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
110 boost::shared_ptr<ModelAPI_Attribute> anAttr = theConstraint->data()->attribute(
111 SketchPlugin_Constraint::ATTRIBUTE(indAttr));
112 switch (typeOfAttribute(anAttr)) {
115 myAttributesList[aNbPoints++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
118 // entities are placed starting from SketchPlugin_Constraint::ENTITY_C() attribute
119 myAttributesList[2 + aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
120 myType = SLVS_C_PT_LINE_DISTANCE;
124 // Verify the correctness of constraint arguments
125 if (aNbPoints == 2 && aNbEntities == 0)
126 myType = SLVS_C_PT_PT_DISTANCE;
127 else if (aNbPoints != 1 || aNbEntities != 1)
128 myType = SLVS_C_UNKNOWN;
132 // Constraint for the given length of a line
133 if (aConstraintKind.compare(SketchPlugin_ConstraintLength::ID()) == 0) {
135 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
136 boost::shared_ptr<ModelAPI_Attribute> anAttr = theConstraint->data()->attribute(
137 SketchPlugin_Constraint::ATTRIBUTE(indAttr));
138 if (typeOfAttribute(anAttr) == LINE)
139 myAttributesList[aNbLines++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
142 myType = SLVS_C_PT_PT_DISTANCE;
146 // Constraint for two parallel/perpendicular lines
147 bool isParallel = (aConstraintKind.compare(SketchPlugin_ConstraintParallel::ID()) == 0);
148 bool isPerpendicular = (aConstraintKind.compare(SketchPlugin_ConstraintPerpendicular::ID()) == 0);
149 if (isParallel || isPerpendicular) {
150 int aNbEntities = 2; // lines in SolveSpace constraints should start from SketchPlugin_Constraint::ENTITY_C() attribute
151 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
152 boost::shared_ptr<ModelAPI_Attribute> anAttr = theConstraint->data()->attribute(
153 SketchPlugin_Constraint::ATTRIBUTE(indAttr));
154 if (typeOfAttribute(anAttr) == LINE)
155 myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
157 if (aNbEntities == 4)
158 myType = isParallel ? SLVS_C_PARALLEL : SLVS_C_PERPENDICULAR;
162 // Constraint for radius of a circle or an arc of circle
163 if (aConstraintKind.compare(SketchPlugin_ConstraintRadius::ID()) == 0) {
164 int aNbEntities = 2; // lines in SolveSpace constraints should started from SketchPlugin_Constraint::ENTITY_C() attribute
165 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
166 boost::shared_ptr<ModelAPI_Attribute> anAttr = theConstraint->data()->attribute(
167 SketchPlugin_Constraint::ATTRIBUTE(indAttr));
168 AttrType aType = typeOfAttribute(anAttr);
169 if (aType == CIRCLE || aType == ARC)
170 myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
172 if (aNbEntities == 3)
173 myType = SLVS_C_DIAMETER;
177 /// \todo Implement other kind of constraints
182 // ================= Auxiliary functions ==============================
183 AttrType typeOfAttribute(boost::shared_ptr<ModelAPI_Attribute> theAttribute)
185 boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttrRef = boost::dynamic_pointer_cast<
186 ModelAPI_AttributeRefAttr>(theAttribute);
190 if (anAttrRef->isObject()) {
191 ResultConstructionPtr aRC = boost::dynamic_pointer_cast<ModelAPI_ResultConstruction>(
192 anAttrRef->object());
196 if (aRC->shape()->isVertex())
198 else if (aRC->shape()->isEdge()) {
199 boost::shared_ptr<GeomAPI_Edge> anEdge = boost::dynamic_pointer_cast<GeomAPI_Edge>(
201 if (anEdge->isLine())
203 else if (anEdge->isCircle())
205 else if (anEdge->isArc())
209 const std::string aType = anAttrRef->attr()->attributeType();
210 if (aType == GeomDataAPI_Point2D::type())
212 if (aType == GeomDataAPI_Point2D::type())