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>
18 #include <SketchPlugin_ConstraintRigid.h>
20 #include <ModelAPI_AttributeRefAttr.h>
21 #include <ModelAPI_Data.h>
22 #include <ModelAPI_Document.h>
23 #include <ModelAPI_Object.h>
24 #include <ModelAPI_ResultConstruction.h>
26 #include <GeomDataAPI_Point.h>
27 #include <GeomDataAPI_Point2D.h>
28 #include <GeomAPI_Edge.h>
29 #include <GeomAPI_Shape.h>
31 /// Possible types of attributes (used to determine constraint type)
34 UNKNOWN, // Something wrong during type determination
42 /// Calculate type of the attribute
43 static AttrType typeOfAttribute(std::shared_ptr<ModelAPI_Attribute> theAttribute);
45 SketchSolver_Constraint::SketchSolver_Constraint()
46 : myConstraint(std::shared_ptr<SketchPlugin_Constraint>()),
47 myType(SLVS_C_UNKNOWN),
52 SketchSolver_Constraint::SketchSolver_Constraint(
53 std::shared_ptr<SketchPlugin_Constraint> theConstraint)
54 : myConstraint(theConstraint),
57 myType = getType(myConstraint);
60 const int& SketchSolver_Constraint::getType(
61 std::shared_ptr<SketchPlugin_Constraint> theConstraint)
63 myType = SLVS_C_UNKNOWN;
67 DataPtr aConstrData = theConstraint->data();
68 if (!aConstrData || !aConstrData->isValid())
71 // Assign empty names of attributes
72 myAttributesList.clear();
73 for (int i = 0; i < CONSTRAINT_ATTR_SIZE; i++)
74 myAttributesList.push_back(std::string());
76 const std::string& aConstraintKind = theConstraint->getKind();
77 // Constraint for coincidence of two points
78 if (aConstraintKind.compare(SketchPlugin_ConstraintCoincidence::ID()) == 0) {
80 // Verify the constraint has only two attributes and they are points
81 int aPt2d = 0; // bit-mapped field, each bit indicates whether the attribute is 2D point
82 int aPt3d = 0; // bit-mapped field, the same information for 3D points
83 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
84 std::shared_ptr<ModelAPI_Attribute> anAttr =
85 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
88 switch (typeOfAttribute(anAttr)) {
89 case POINT2D: // the attribute is a 2D point
90 aPt2d |= (1 << indAttr);
91 myAttributesList[anAttrPos++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
93 case POINT3D: // the attribute is a 3D point
94 aPt3d |= (1 << indAttr);
95 myAttributesList[anAttrPos++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
98 // Attribute neither 2D nor 3D point is not supported by this type of constraint
102 // The constrained points should be in first and second positions,
103 // so the expected value of aPt2d or aPt3d is 3
104 if ((aPt2d == 3 && aPt3d == 0) || (aPt2d == 0 && aPt3d == 3))
105 myType = SLVS_C_POINTS_COINCIDENT;
106 // Constraint parameters are wrong
110 // Constraint for distance between point and another entity
111 if (aConstraintKind.compare(SketchPlugin_ConstraintDistance::ID()) == 0) {
114 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
115 std::shared_ptr<ModelAPI_Attribute> anAttr =
116 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
117 switch (typeOfAttribute(anAttr)) {
120 myAttributesList[aNbPoints++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
123 // entities are placed starting from SketchPlugin_Constraint::ENTITY_C() attribute
124 myAttributesList[2 + aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
125 myType = SLVS_C_PT_LINE_DISTANCE;
129 // Verify the correctness of constraint arguments
130 if (aNbPoints == 2 && aNbEntities == 0)
131 myType = SLVS_C_PT_PT_DISTANCE;
132 else if (aNbPoints != 1 || aNbEntities != 1)
133 myType = SLVS_C_UNKNOWN;
137 // Constraint for the given length of a line
138 if (aConstraintKind.compare(SketchPlugin_ConstraintLength::ID()) == 0) {
140 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
141 std::shared_ptr<ModelAPI_Attribute> anAttr =
142 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
143 if (typeOfAttribute(anAttr) == LINE)
144 myAttributesList[aNbLines++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
147 myType = SLVS_C_PT_PT_DISTANCE;
151 // Constraint for two parallel/perpendicular lines
152 bool isParallel = (aConstraintKind.compare(SketchPlugin_ConstraintParallel::ID()) == 0);
153 bool isPerpendicular = (aConstraintKind.compare(SketchPlugin_ConstraintPerpendicular::ID()) == 0);
154 if (isParallel || isPerpendicular) {
155 int aNbEntities = 2; // lines in SolveSpace constraints should start from SketchPlugin_Constraint::ENTITY_C() attribute
156 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
157 std::shared_ptr<ModelAPI_Attribute> anAttr =
158 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
159 if (typeOfAttribute(anAttr) == LINE)
160 myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
162 if (aNbEntities == 4)
163 myType = isParallel ? SLVS_C_PARALLEL : SLVS_C_PERPENDICULAR;
167 // Constraint for radius of a circle or an arc of circle
168 if (aConstraintKind.compare(SketchPlugin_ConstraintRadius::ID()) == 0) {
169 int aNbEntities = 2; // lines in SolveSpace constraints should started from SketchPlugin_Constraint::ENTITY_C() attribute
170 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
171 std::shared_ptr<ModelAPI_Attribute> anAttr =
172 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
173 AttrType aType = typeOfAttribute(anAttr);
174 if (aType == CIRCLE || aType == ARC)
175 myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
177 if (aNbEntities == 3)
178 myType = SLVS_C_DIAMETER;
182 // Constraint for fixed entity
183 if (aConstraintKind.compare(SketchPlugin_ConstraintRigid::ID()) == 0) {
184 // Verify that only one entity is filled
186 for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
187 std::shared_ptr<ModelAPI_Attribute> anAttr =
188 aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
189 AttrType aType = typeOfAttribute(anAttr);
190 if (aType != UNKNOWN)
191 myAttributesList[aNbAttrs++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
194 myType = SLVS_C_WHERE_DRAGGED;
198 /// \todo Implement other kind of constraints
203 // ================= Auxiliary functions ==============================
204 AttrType typeOfAttribute(std::shared_ptr<ModelAPI_Attribute> theAttribute)
206 std::shared_ptr<ModelAPI_AttributeRefAttr> anAttrRef = std::dynamic_pointer_cast<
207 ModelAPI_AttributeRefAttr>(theAttribute);
211 if (anAttrRef->isObject()) {
212 ResultConstructionPtr aRC = std::dynamic_pointer_cast<ModelAPI_ResultConstruction>(
213 anAttrRef->object());
214 if (!aRC || !aRC->shape())
217 if (aRC->shape()->isVertex())
219 else if (aRC->shape()->isEdge()) {
220 std::shared_ptr<GeomAPI_Edge> anEdge = std::dynamic_pointer_cast<GeomAPI_Edge>(
222 if (anEdge->isLine())
224 else if (anEdge->isCircle())
226 else if (anEdge->isArc())
230 const std::string aType = anAttrRef->attr()->attributeType();
231 if (aType == GeomDataAPI_Point2D::type())
233 if (aType == GeomDataAPI_Point2D::type())