1 #include <SketchSolver_ConstraintTangent.h>
2 #include <SketchSolver_Error.h>
3 #include <SketchSolver_Manager.h>
5 #include <GeomAPI_Pnt2d.h>
8 /// \brief Check whether the entities has only one shared point
9 static bool hasSingleCoincidence(EntityWrapperPtr theEntity1, EntityWrapperPtr theEntity2)
11 BuilderPtr aBuilder = SketchSolver_Manager::instance()->builder();
13 const std::list<EntityWrapperPtr>& aPoints1 = theEntity1->subEntities();
14 const std::list<EntityWrapperPtr>& aPoints2 = theEntity2->subEntities();
16 std::list<EntityWrapperPtr>::const_iterator aStartIt1 = aPoints1.begin();
17 if (theEntity1->type() == ENTITY_ARC) ++aStartIt1; // skip center of arc
18 std::list<EntityWrapperPtr>::const_iterator aStartIt2 = aPoints2.begin();
19 if (theEntity2->type() == ENTITY_ARC) ++aStartIt2; // skip center of arc
22 std::list<EntityWrapperPtr>::const_iterator anIt1, anIt2;
23 for (anIt1 = aStartIt1; anIt1 != aPoints1.end(); ++anIt1) {
24 if ((*anIt1)->type() != ENTITY_POINT)
26 std::shared_ptr<GeomAPI_Pnt2d> aPt1 = aBuilder->point(*anIt1);
27 for (anIt2 = aStartIt2; anIt2 != aPoints2.end(); ++anIt2) {
28 if ((*anIt2)->type() != ENTITY_POINT)
30 std::shared_ptr<GeomAPI_Pnt2d> aPt2 = aBuilder->point(*anIt2);
31 if (aPt1->distance(aPt2) < tolerance)
39 void SketchSolver_ConstraintTangent::getAttributes(
41 std::vector<EntityWrapperPtr>& theAttributes)
43 SketchSolver_Constraint::getAttributes(theValue, theAttributes);
44 if (!myErrorMsg.empty() || !theAttributes[2] || !theAttributes[3]) {
45 theAttributes.clear();
49 // Check the quantity of entities of each type and their order (arcs first)
52 bool isSwap = false; // whether need to swap arguments (arc goes before line)
53 std::vector<EntityWrapperPtr>::iterator anEntIt = theAttributes.begin() + 2;
54 for (; anEntIt != theAttributes.end(); ++anEntIt) {
55 if ((*anEntIt)->type() == ENTITY_LINE)
57 else if ((*anEntIt)->type() == ENTITY_ARC) {
59 isSwap = aNbLines > 0;
64 myErrorMsg = SketchSolver_Error::INCORRECT_TANGENCY_ATTRIBUTE();
67 if (aNbLines == 1 && aNbArcs == 1)
68 myType = CONSTRAINT_TANGENT_ARC_LINE;
69 else if (aNbArcs == 2)
70 myType = CONSTRAINT_TANGENT_ARC_ARC;
72 myErrorMsg = SketchSolver_Error::INCORRECT_ATTRIBUTE();
76 if (!hasSingleCoincidence(theAttributes[2], theAttributes[3]))
77 myErrorMsg = SketchSolver_Error::INCORRECT_ATTRIBUTE();
80 EntityWrapperPtr aTemp = theAttributes[2];
81 theAttributes[2] = theAttributes[3];
82 theAttributes[3] = aTemp;