1 #include <SketchSolver_ConstraintAngle.h>
3 #include <GeomAPI_Dir2d.h>
4 #include <GeomAPI_Lin2d.h>
5 #include <GeomAPI_Pnt2d.h>
6 #include <GeomAPI_XY.h>
10 void SketchSolver_ConstraintAngle::getAttributes(
11 double& theValue, std::vector<Slvs_hEntity>& theAttributes)
13 SketchSolver_Constraint::getAttributes(theValue, theAttributes);
19 void SketchSolver_ConstraintAngle::adjustConstraint()
21 static const double aTol = 1000. * tolerance;
22 Slvs_Constraint aConstraint = myStorage->getConstraint(mySlvsConstraints.front());
25 std::shared_ptr<GeomAPI_Pnt2d> aPoints[2][2]; // start and end points of lines
26 Slvs_hConstraint aFixedConstraint;
27 Slvs_hEntity anEnt[2] = {aConstraint.entityA, aConstraint.entityB};
28 for (int i = 0; i < 2; i++) {
29 const Slvs_Entity& aLine = myStorage->getEntity(anEnt[i]);
31 for (int j = 0; j < 2; j++, aCoef += 2.0) {
32 const Slvs_Entity& aPoint = myStorage->getEntity(aLine.point[j]);
34 for (int k = 0; k < 2; k++)
35 aCoords[k] = myStorage->getParameter(aPoint.param[k]).val;
36 isFixed[i][j] = myStorage->isPointFixed(aPoint.h, aFixedConstraint, true);
37 aPoints[i][j] = std::shared_ptr<GeomAPI_Pnt2d>(new GeomAPI_Pnt2d(aCoords[0], aCoords[1]));
41 std::shared_ptr<GeomAPI_Lin2d> aLine[2] = {
42 std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPoints[0][0], aPoints[0][1])),
43 std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPoints[1][0], aPoints[1][1]))
45 std::shared_ptr<GeomAPI_Pnt2d> anIntersection = aLine[0]->intersect(aLine[1]);
49 for (int i = 0; i < 2; i++) {
50 for (int j = 0; j < 2; j++)
51 aDist[i][j] = anIntersection->distance(aPoints[i][j]);
52 if (aDist[i][0] > tolerance && aDist[i][1] > tolerance &&
53 aDist[i][0] + aDist[i][1] < aPoints[i][0]->distance(aPoints[i][1]) + 2.0 * tolerance) {
54 // the intersection point is an inner point of the line,
55 // we change the sign of distance till start point to calculate correct coordinates
60 std::shared_ptr<GeomAPI_Dir2d> aDir[2];
61 for (int i = 0; i < 2; i++)
62 if (aDist[i][1] > fabs(aDist[i][0]))
63 aDir[i] = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(
64 aPoints[i][1]->xy()->decreased(anIntersection->xy())));
66 aDir[i] = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(
67 aPoints[i][0]->xy()->decreased(anIntersection->xy())));
68 // main direction is opposite => change signs
73 aConstraint.other = false;
74 for (int i = 0; i < 2; i++)
75 if (aLine[i]->direction()->dot(aDir[i]) < 0.0)
76 aConstraint.other = !aConstraint.other;
77 myStorage->updateConstraint(aConstraint);
79 bool isChanged = fabs(myAngle - aConstraint.valA) > aTol;
80 // myAngle should be updated even if the angle of constraint is changed too little
81 myAngle = aConstraint.valA;
83 return; // the angle was not changed, no need to recalculate positions of lines
85 if (isFixed[0][0] && isFixed[0][1] && isFixed[1][0] && isFixed[1][1])
86 return; // both lines are fixed => no need to update them
88 // Recalculate positions of lines to avoid conflicting constraints
89 // while changing angle value several times
90 double cosA = cos(myAngle * PI / 180.0);
91 double sinA = sin(myAngle * PI / 180.0);
92 if (aDir[0]->cross(aDir[1]) < 0.0)
95 if (isFixed[1][0] && isFixed[1][1]) {
99 double x = aDir[1-aLineToUpd]->x() * cosA - aDir[1-aLineToUpd]->y() * sinA;
100 double y = aDir[1-aLineToUpd]->x() * sinA + aDir[1-aLineToUpd]->y() * cosA;
102 std::shared_ptr<GeomAPI_Pnt2d> aNewPoints[2];
103 for (int i = 0; i < 2; i++) {
104 aNewPoints[i] = std::shared_ptr<GeomAPI_Pnt2d>(
105 new GeomAPI_Pnt2d(anIntersection->x() + x * aDist[aLineToUpd][i],
106 anIntersection->y() + y * aDist[aLineToUpd][i]));
109 std::shared_ptr<GeomAPI_XY> aDelta;
110 if (isFixed[aLineToUpd][0] && !isFixed[aLineToUpd][1])
111 aDelta = aPoints[aLineToUpd][0]->xy()->decreased(aNewPoints[0]->xy());
112 else if (!isFixed[aLineToUpd][0] && isFixed[aLineToUpd][1])
113 aDelta = aPoints[aLineToUpd][1]->xy()->decreased(aNewPoints[1]->xy());
115 for (int i = 0; i < 2; i++) {
116 aNewPoints[i]->setX(aNewPoints[i]->x() + aDelta->x());
117 aNewPoints[i]->setY(aNewPoints[i]->y() + aDelta->y());
121 // Update positions of points
122 const Slvs_Entity& anUpdLine = myStorage->getEntity(anEnt[aLineToUpd]);
124 for (int i = 0; i < 2; i++) {
125 const Slvs_Entity& aPoint = myStorage->getEntity(anUpdLine.point[i]);
126 aParam = myStorage->getParameter(aPoint.param[0]);
127 aParam.val = aNewPoints[i]->x();
128 myStorage->updateParameter(aParam);
129 aParam = myStorage->getParameter(aPoint.param[1]);
130 aParam.val = aNewPoints[i]->y();
131 myStorage->updateParameter(aParam);