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 std::shared_ptr<GeomAPI_Pnt2d> aPt1 = aBuilder->point(*anIt1);
25 for (anIt2 = aStartIt2; anIt2 != aPoints2.end(); ++anIt2) {
26 std::shared_ptr<GeomAPI_Pnt2d> aPt2 = aBuilder->point(*anIt2);
27 if (aPt1->distance(aPt2) < tolerance)
35 void SketchSolver_ConstraintTangent::getAttributes(
37 std::vector<EntityWrapperPtr>& theAttributes)
39 SketchSolver_Constraint::getAttributes(theValue, theAttributes);
40 if (!myErrorMsg.empty() || !theAttributes[2] || !theAttributes[3]) {
41 theAttributes.clear();
45 // Check the quantity of entities of each type and their order (arcs first)
48 bool isSwap = false; // whether need to swap arguments (arc goes before line)
49 std::vector<EntityWrapperPtr>::iterator anEntIt = theAttributes.begin() + 2;
50 for (; anEntIt != theAttributes.end(); ++anEntIt) {
51 if ((*anEntIt)->type() == ENTITY_LINE)
53 else if ((*anEntIt)->type() == ENTITY_ARC) {
55 isSwap = aNbLines > 0;
60 myErrorMsg = SketchSolver_Error::INCORRECT_TANGENCY_ATTRIBUTE();
63 if (aNbLines == 1 && aNbArcs == 1)
64 myType = CONSTRAINT_TANGENT_ARC_LINE;
65 else if (aNbArcs == 2)
66 myType = CONSTRAINT_TANGENT_ARC_ARC;
68 myErrorMsg = SketchSolver_Error::INCORRECT_ATTRIBUTE();
72 if (!hasSingleCoincidence(theAttributes[2], theAttributes[3]))
73 myErrorMsg = SketchSolver_Error::INCORRECT_ATTRIBUTE();
76 EntityWrapperPtr aTemp = theAttributes[2];
77 theAttributes[2] = theAttributes[3];
78 theAttributes[3] = aTemp;