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0022885: EDF 10392 HYDRO + GEOM: Spline of a polyline is not possible and returns an error.

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vsr 2015-03-12 17:10:26 +03:00
parent 334ef9aff1
commit cd24269e8c
1 changed files with 179 additions and 133 deletions
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308
src/GEOMImpl/GEOMImpl_SplineDriver.cxx
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@ -52,6 +52,59 @@
#include <Standard_NullObject.hxx>
// Below macro specifies how the closed point set is processed (issue 0022885).
// See below for more information.
// Currently solution 4 is chosen!
#define BSPLINE_PROCESS_CLOSED_PNTSET 4
namespace
{
/*!
\brief Generate list of points from the list of (x,y,z) coordinates
\param coords list of values specifying (x y z) coordinates of points
\return list of points
\internal
*/
Handle(TColgp_HArray1OfPnt) pointsFromCoords(Handle(TColStd_HArray1OfReal) coords)
{
Standard_Integer length = coords->Length() / 3;
Handle(TColgp_HArray1OfPnt) points = new TColgp_HArray1OfPnt(1, length);
for (int i = 0; i < length; i ++) {
Standard_Real x = coords->Value( i*3+1 );
Standard_Real y = coords->Value( i*3+2 );
Standard_Real z = coords->Value( i*3+3 );
points->SetValue(i+1, gp_Pnt(x, y, z));
}
return points;
}
/*!
\brief Generate list of points from the sequence of input objects
\param coords list of objects as it is stored within the CAF tree
\return list of points
\internal
*/
Handle(TColgp_HArray1OfPnt) pointsFromObjs(Handle(TColStd_HSequenceOfTransient) objects)
{
Standard_Integer length = objects->Length();
Handle(TColgp_HArray1OfPnt) points = new TColgp_HArray1OfPnt(1, length);
for (int i = 1; i <= length; i ++) {
TopoDS_Shape shape = Handle(GEOM_Function)::DownCast(objects->Value(i))->GetValue();
if (shape.ShapeType() != TopAbs_VERTEX)
// error: only vertices are allowed in the input
Standard_ConstructionError::Raise("Input should contain only vertices");
points->SetValue(i, BRep_Tool::Pnt(TopoDS::Vertex(shape)));
}
return points;
}
}
//=======================================================================
//function : GetID
//purpose :
@ -91,173 +144,166 @@ Standard_Integer GEOMImpl_SplineDriver::Execute(TFunction_Logbook& log) const
bool useCoords = aCI.GetConstructorType() == COORD_CONSTRUCTOR;
Handle(TColStd_HArray1OfReal) aCoordsArray; // parametric case
Handle(TColStd_HSequenceOfTransient) aPoints; // points case
// collect points from input parameters: objects or coordinates
Handle(TColgp_HArray1OfPnt) points = useCoords ? pointsFromCoords(aCI.GetCoordinates()) : pointsFromObjs(aCI.GetPoints());
int length = points->Length();
int aLen = 0;
if (useCoords) {
aCoordsArray = aCI.GetCoordinates();
aLen = aCoordsArray->Length() / 3;
}
else {
aPoints = aCI.GetPoints();
aLen = aPoints->Length();
}
if (length < 2) return 0; // error: not enough points in the input list
if (aLen < 2) return 0;
TColgp_Array1OfPnt points (1, (useCoords ? aLen : 1));
if (useCoords) {
int anArrayLength = aCoordsArray->Length();
for (int i = 0, j = 1; i <= (anArrayLength-3); i += 3) {
gp_Pnt aPnt = gp_Pnt(aCoordsArray->Value(i+1), aCoordsArray->Value(i+2), aCoordsArray->Value(i+3));
points.SetValue(j, aPnt);
j++;
// reorder points if required (bspline only)
if ((aType == SPLINE_INTERPOLATION || aType == SPLINE_INTERPOL_TANGENTS) && aCI.GetDoReordering()) {
for (int i = 1; i < length - 1; i++) {
gp_Pnt pi = points->Value(i);
int nearest = 0;
double minDist = RealLast();
for (int j = i+1; j <= length; j++) {
double dist = pi.SquareDistance(points->Value(j));
if (dist < minDist && (minDist - dist) > Precision::Confusion()) {
nearest = j;
minDist = dist;
}
}
int aRealLen = aLen;
if (aType == SPLINE_BEZIER && aCI.GetIsClosed()) {
TopoDS_Vertex aV1;
if (useCoords) {
aV1 = BRepBuilderAPI_MakeVertex(points.Value(1));
}
else {
Handle(GEOM_Function) aFPoint = Handle(GEOM_Function)::DownCast(aPoints->Value(1));
TopoDS_Shape aFirstPnt = aFPoint->GetValue();
aV1 = TopoDS::Vertex(aFirstPnt);
}
TopoDS_Vertex aV2;
if (useCoords) {
aV2 = BRepBuilderAPI_MakeVertex(points.Value(aLen));
}
else {
Handle(GEOM_Function) aLPoint = Handle(GEOM_Function)::DownCast(aPoints->Value(aLen));
TopoDS_Shape aLastPnt = aLPoint->GetValue();
aV2 = TopoDS::Vertex(aLastPnt);
}
if (!aV1.IsNull() && !aV2.IsNull() && !aV1.IsSame(aV2)) {
aRealLen++;
}
}
int ind;
Standard_Boolean isSeveral = Standard_False;
gp_Pnt aPrevP;
TColgp_Array1OfPnt CurvePoints (1, aRealLen);
for (ind = 1; ind <= aLen; ind++) {
gp_Pnt aP;
if (useCoords) {
aP = points.Value(ind);
if (!isSeveral && ind > 1) {
if (aP.Distance(aPrevP) > Precision::Confusion()) {
isSeveral = Standard_True;
}
}
CurvePoints.SetValue(ind, aP);
aPrevP = aP;
}
else {
Handle(GEOM_Function) aRefPoint = Handle(GEOM_Function)::DownCast(aPoints->Value(ind));
TopoDS_Shape aShapePnt = aRefPoint->GetValue();
if (aShapePnt.ShapeType() == TopAbs_VERTEX) {
aP = BRep_Tool::Pnt(TopoDS::Vertex(aShapePnt));
if (!isSeveral && ind > 1) {
if (aP.Distance(aPrevP) > Precision::Confusion()) {
isSeveral = Standard_True;
}
}
CurvePoints.SetValue(ind, aP);
aPrevP = aP;
}
}
}
if (aType == SPLINE_BEZIER) {
if (!isSeveral) {
Standard_ConstructionError::Raise("Points for Bezier Curve are too close");
}
if (aRealLen > aLen) { // set last point equal to first for the closed curve
CurvePoints.SetValue(aRealLen, CurvePoints.Value(1));
}
Handle(Geom_BezierCurve) GBC = new Geom_BezierCurve (CurvePoints);
aShape = BRepBuilderAPI_MakeEdge(GBC).Edge();
}
else {
//GeomAPI_PointsToBSpline GBC (CurvePoints);
//aShape = BRepBuilderAPI_MakeEdge(GBC).Edge();
if (aCI.GetDoReordering()) {
for (int curInd = 1; curInd < aLen - 1; curInd++) {
gp_Pnt curPnt = CurvePoints.Value(curInd);
int nearInd = 0;
double nearDist = RealLast();
for (ind = curInd + 1; ind <= aLen; ind++) {
double dist = curPnt.SquareDistance(CurvePoints.Value(ind));
if (dist < nearDist && (nearDist - dist) > Precision::Confusion()) {
nearInd = ind;
nearDist = dist;
}
}
if (nearInd > 0 && nearInd != curInd + 1) {
if (nearest > 0 && nearest != i + 1) {
// Keep given order of points to use it in case of equidistant candidates
// .-<---<-.
// / \
// o o o c o->o->o->o->n o o
// | | |
// curInd curInd+1 nearInd
gp_Pnt nearPnt = CurvePoints.Value(nearInd);
for (ind = nearInd; ind > curInd + 1; ind--) {
CurvePoints.SetValue(ind, CurvePoints.Value(ind - 1));
}
CurvePoints.SetValue(curInd + 1, nearPnt);
// i i+1 nearest
gp_Pnt p = points->Value(nearest);
for (int j = nearest; j > i+1; j--)
points->SetValue(j, points->Value(j-1));
points->SetValue(i+1, p);
}
}
} // end of reordering
bool closed = points->Value(1).Distance(points->Value(length)) <= gp::Resolution();
if (aType == SPLINE_BEZIER) {
// for Bezier curve we should append first point to the list if:
// a) "closed" flag is set, and
// b) first and last vertices are not too close
bool addFirst = aCI.GetIsClosed() && !closed;
// re-fill points and check that there's enough points to create a curve
bool isValid = false;
TColgp_Array1OfPnt curvePoints(1, length + (addFirst ? 1 : 0));
gp_Pnt pp;
for (int i = 1; i <= length; i++) {
gp_Pnt p = points->Value(i);
if (!isValid && i > 1 && p.Distance(pp) > Precision::Confusion())
isValid = true;
curvePoints.SetValue(i, p);
pp = p;
}
Handle(TColgp_HArray1OfPnt) aHCurvePoints = new TColgp_HArray1OfPnt (1, aLen);
for (ind = 1; ind <= aLen; ind++) {
aHCurvePoints->SetValue(ind, CurvePoints.Value(ind));
if (!isValid)
// error: not enough points to create curve
Standard_ConstructionError::Raise("Points for Bezier Curve are too close");
// set last point equal to first for the closed Bezier curve
if (addFirst) curvePoints.SetValue(length+1, curvePoints.Value(1));
// create Bezier curve
Handle(Geom_BezierCurve) GBC = new Geom_BezierCurve(curvePoints);
aShape = BRepBuilderAPI_MakeEdge(GBC).Edge();
}
else {
// Below described processing of closed points set case
// is not done for constrained bsplined
bool typeok = aType == SPLINE_INTERPOLATION;
#if BSPLINE_PROCESS_CLOSED_PNTSET == 1
// Last point is removed from the list if:
// a) first and last vertices are equal;
// b) "closed" flag is not taken into account.
// If first and last points are equal, we force "closed" flag to be set to true.
// For the case when first and last vertices are equal, this approach causes
// result different that would be if last point had NOT be removed and "closed" flag is false.
bool isClosed = typeok && (aCI.GetIsClosed() || closed);
bool removeLast = typeok && closed;
bool addFirst = false;
#elif BSPLINE_PROCESS_CLOSED_PNTSET == 2
// Last point is removed from the list if:
// a) first and last vertices are equal;
// b) "closed" flag is set to true.
// Flag "closed" is taken "as is".
// For the case when first and last vertices are equal, this approach causes
// different results with "closed" flag set to true and false.
bool isClosed = typeok && aCI.GetIsClosed();
bool removeLast = typeok && aCI.GetIsClosed() && closed;
bool addFirst = false;
#elif BSPLINE_PROCESS_CLOSED_PNTSET == 3
// Points are passed "as is" to the creator.
// If first and last points are equal, we force "closed" flag to be set to false.
// For the case when first and last vertices are equal, this approach gives
// the same results with "closed" flag set to true and false.
bool isClosed = typeok && aCI.GetIsClosed() && !closed;
bool removeLast = false;
bool addFirst = false;
#elif BSPLINE_PROCESS_CLOSED_PNTSET == 4
// First point is added to the list if:
// a) first and last vertices are not equal;
// b) "closed" flag is set to true.
// In this case "closed" flag is forcidly set to false - bspline creator is
// capable to create closed edge in this case.
// This approach gives the same results with "closed" flag set to true not
// depending on if set of points is closed or no.
// Also, it gives equal reqults in both case if set of points is closed or not
// and "closed" flag is set to true, in contrast to solution 3 above.
bool isClosed = false;
bool removeLast = false;
bool addFirst = typeok && aCI.GetIsClosed() && !closed;
#else
// Points are passed "as is" to the creator.
// This causes an error when first point is equal to last one and
// "closed" flag is set to true; see bug 0022885.
bool isClosed = typeok && aCI.GetIsClosed();
bool removeLast = false;
bool addFirst = false;
#endif
// remove last point or append first one if the conditions are observed (see above)
if (removeLast || addFirst) {
int extra = removeLast ? -1 : (addFirst ? 1 : 0 );
int nb = removeLast ? length-1 : length;
Handle(TColgp_HArray1OfPnt) curvePoints = new TColgp_HArray1OfPnt (1, length+extra);
for (int i = 1; i <= nb; i++)
curvePoints->SetValue(i, points->Value(i));
if (addFirst) curvePoints->SetValue(length+1, points->Value(1));
points = curvePoints;
}
bool isClosed = Standard_False;
if (aType == SPLINE_INTERPOLATION)
isClosed = aCI.GetIsClosed();
GeomAPI_Interpolate GBC (aHCurvePoints, isClosed, gp::Resolution());
// initial set-up of curve creator
GeomAPI_Interpolate GBC(points, isClosed, gp::Resolution());
// add tangent vectors constraints
if (aType == SPLINE_INTERPOL_TANGENTS) {
Handle(GEOM_Function) aVec1Ref = aCI.GetFirstVector();
Handle(GEOM_Function) aVec2Ref = aCI.GetLastVector();
if (aVec1Ref.IsNull() || aVec2Ref.IsNull())
// error: bad vector parameter is specified
Standard_NullObject::Raise("Null object is given for a vector");
TopoDS_Shape aVec1Sh = aVec1Ref->GetValue();
TopoDS_Shape aVec2Sh = aVec2Ref->GetValue();
// take orientation of edge into account to avoid regressions, as it was implemented so
gp_Vec aV1 = GEOMUtils::GetVector(aVec1Sh, Standard_True);
gp_Vec aV2 = GEOMUtils::GetVector(aVec2Sh, Standard_True);
gp_Vec aV1 = GEOMUtils::GetVector(aVec1Ref->GetValue(), Standard_True);
gp_Vec aV2 = GEOMUtils::GetVector(aVec2Ref->GetValue(), Standard_True);
// push constraint vectors to the curve creator
GBC.Load(aV1, aV2, /*Scale*/Standard_True);
}
// create bspline curve
GBC.Perform();
if (GBC.IsDone())
aShape = BRepBuilderAPI_MakeEdge(GBC.Curve()).Edge();
else
return 0;
}
}
else {
}
if (aShape.IsNull()) return 0;
if (aShape.IsNull()) return 0; // error: bad result
aFunction->SetValue(aShape);