App::DocumentObjectExecReturn *Pocket::execute(void)
{
// Handle legacy features, these typically have Type set to 3 (previously NULL, now UpToFace),
// empty FaceName (because it didn't exist) and a value for Length
if (std::string(Type.getValueAsString()) == "UpToFace" &&
(UpToFace.getValue() == NULL && Length.getValue() > Precision::Confusion()))
Type.setValue("Length");
// Validate parameters
double L = Length.getValue();
if ((std::string(Type.getValueAsString()) == "Length") && (L < Precision::Confusion()))
return new App::DocumentObjectExecReturn("Pocket: Length of pocket too small");
Part::Part2DObject* sketch = 0;
std::vector<TopoDS_Wire> wires;
TopoDS_Shape support;
try {
sketch = getVerifiedSketch();
wires = getSketchWires();
support = getSupportShape();
} catch (const Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
// get the Sketch plane
Base::Placement SketchPos = sketch->Placement.getValue();
Base::Rotation SketchOrientation = SketchPos.getRotation();
Base::Vector3d SketchVector(0,0,1);
SketchOrientation.multVec(SketchVector,SketchVector);
// turn around for pockets
SketchVector *= -1;
this->positionBySketch();
TopLoc_Location invObjLoc = this->getLocation().Inverted();
try {
support.Move(invObjLoc);
gp_Dir dir(SketchVector.x,SketchVector.y,SketchVector.z);
dir.Transform(invObjLoc.Transformation());
TopoDS_Shape sketchshape = makeFace(wires);
if (sketchshape.IsNull())
return new App::DocumentObjectExecReturn("Pocket: Creating a face from sketch failed");
sketchshape.Move(invObjLoc);
std::string method(Type.getValueAsString());
if (method == "UpToFirst" || method == "UpToFace") {
TopoDS_Face supportface = getSupportFace();
supportface.Move(invObjLoc);
// Find a valid face to extrude up to
TopoDS_Face upToFace;
if (method == "UpToFace") {
getUpToFaceFromLinkSub(upToFace, UpToFace);
upToFace.Move(invObjLoc);
}
getUpToFace(upToFace, support, supportface, sketchshape, method, dir);
// Special treatment because often the created stand-alone prism is invalid (empty) because
// BRepFeat_MakePrism(..., 2, 1) is buggy
BRepFeat_MakePrism PrismMaker;
PrismMaker.Init(support, sketchshape, supportface, dir, 0, 1);
PrismMaker.Perform(upToFace);
if (!PrismMaker.IsDone())
return new App::DocumentObjectExecReturn("Pocket: Up to face: Could not extrude the sketch!");
TopoDS_Shape prism = PrismMaker.Shape();
prism = refineShapeIfActive(prism);
// And the really expensive way to get the SubShape...
BRepAlgoAPI_Cut mkCut(support, prism);
if (!mkCut.IsDone())
return new App::DocumentObjectExecReturn("Pocket: Up to face: Could not get SubShape!");
// FIXME: In some cases this affects the Shape property: It is set to the same shape as the SubShape!!!!
TopoDS_Shape result = refineShapeIfActive(mkCut.Shape());
this->SubShape.setValue(result);
this->Shape.setValue(prism);
} else {
TopoDS_Shape prism;
generatePrism(prism, sketchshape, method, dir, L, 0.0,
Midplane.getValue(), Reversed.getValue());
if (prism.IsNull())
return new App::DocumentObjectExecReturn("Pocket: Resulting shape is empty");
// set the subtractive shape property for later usage in e.g. pattern
prism = refineShapeIfActive(prism);
this->SubShape.setValue(prism);
// Cut the SubShape out of the support
BRepAlgoAPI_Cut mkCut(support, prism);
if (!mkCut.IsDone())
return new App::DocumentObjectExecReturn("Pocket: Cut out of support failed");
TopoDS_Shape result = mkCut.Shape();
// we have to get the solids (fuse sometimes creates compounds)
TopoDS_Shape solRes = this->getSolid(result);
if (solRes.IsNull())
return new App::DocumentObjectExecReturn("Pocket: Resulting shape is not a solid");
solRes = refineShapeIfActive(solRes);
remapSupportShape(solRes);
this->Shape.setValue(solRes);
}
return App::DocumentObject::StdReturn;
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
if (std::string(e->GetMessageString()) == "TopoDS::Face" &&
(std::string(Type.getValueAsString()) == "UpToFirst" || std::string(Type.getValueAsString()) == "UpToFace"))
return new App::DocumentObjectExecReturn("Could not create face from sketch.\n"
"Intersecting sketch entities or multiple faces in a sketch are not allowed "
"for making a pocket up to a face.");
else
return new App::DocumentObjectExecReturn(e->GetMessageString());
}
catch (Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
}
App::DocumentObjectExecReturn *Pad::execute(void)
{
// Validate parameters
double L = Length.getValue();
if ((std::string(Type.getValueAsString()) == "Length") && (L < Precision::Confusion()))
return new App::DocumentObjectExecReturn("Length of pad too small");
double L2 = Length2.getValue();
if ((std::string(Type.getValueAsString()) == "TwoLengths") && (L < Precision::Confusion()))
return new App::DocumentObjectExecReturn("Second length of pad too small");
Part::Part2DObject* sketch = 0;
std::vector<TopoDS_Wire> wires;
try {
sketch = getVerifiedSketch();
wires = getSketchWires();
} catch (const Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
TopoDS_Shape support;
try {
support = getSupportShape();
} catch (const Base::Exception&) {
// ignore, because support isn't mandatory
support = TopoDS_Shape();
}
// get the Sketch plane
Base::Placement SketchPos = sketch->Placement.getValue();
Base::Rotation SketchOrientation = SketchPos.getRotation();
Base::Vector3d SketchVector(0,0,1);
SketchOrientation.multVec(SketchVector,SketchVector);
this->positionBySketch();
TopLoc_Location invObjLoc = this->getLocation().Inverted();
try {
support.Move(invObjLoc);
gp_Dir dir(SketchVector.x,SketchVector.y,SketchVector.z);
dir.Transform(invObjLoc.Transformation());
TopoDS_Shape sketchshape = makeFace(wires);
if (sketchshape.IsNull())
return new App::DocumentObjectExecReturn("Pad: Creating a face from sketch failed");
sketchshape.Move(invObjLoc);
TopoDS_Shape prism;
std::string method(Type.getValueAsString());
if (method == "UpToFirst" || method == "UpToLast" || method == "UpToFace") {
TopoDS_Face supportface = getSupportFace();
supportface.Move(invObjLoc);
if (Reversed.getValue())
dir.Reverse();
// Find a valid face to extrude up to
TopoDS_Face upToFace;
if (method == "UpToFace") {
getUpToFaceFromLinkSub(upToFace, UpToFace);
upToFace.Move(invObjLoc);
}
getUpToFace(upToFace, support, supportface, sketchshape, method, dir);
// A support object is always required and we need to use BRepFeat_MakePrism
// Problem: For Pocket/UpToFirst (or an equivalent Pocket/UpToFace) the resulting shape is invalid
// because the feature does not add any material. This only happens with the "2" option, though
// Note: It might be possible to pass a shell or a compound containing multiple faces
// as the Until parameter of Perform()
BRepFeat_MakePrism PrismMaker;
PrismMaker.Init(support, sketchshape, supportface, dir, 2, 1);
PrismMaker.Perform(upToFace);
if (!PrismMaker.IsDone())
return new App::DocumentObjectExecReturn("Pad: Up to face: Could not extrude the sketch!");
prism = PrismMaker.Shape();
} else {
generatePrism(prism, sketchshape, method, dir, L, L2,
Midplane.getValue(), Reversed.getValue());
}
if (prism.IsNull())
return new App::DocumentObjectExecReturn("Pad: Resulting shape is empty");
// set the additive shape property for later usage in e.g. pattern
this->AddShape.setValue(prism);
// if the sketch has a support fuse them to get one result object
if (!support.IsNull()) {
// Let's call algorithm computing a fuse operation:
BRepAlgoAPI_Fuse mkFuse(support, prism);
// Let's check if the fusion has been successful
if (!mkFuse.IsDone())
return new App::DocumentObjectExecReturn("Pad: Fusion with support failed");
TopoDS_Shape result = mkFuse.Shape();
// we have to get the solids (fuse sometimes creates compounds)
TopoDS_Shape solRes = this->getSolid(result);
// lets check if the result is a solid
if (solRes.IsNull())
return new App::DocumentObjectExecReturn("Pad: Resulting shape is not a solid");
this->Shape.setValue(solRes);
} else {
this->Shape.setValue(prism);
}
return App::DocumentObject::StdReturn;
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
if (std::string(e->GetMessageString()) == "TopoDS::Face")
return new App::DocumentObjectExecReturn("Could not create face from sketch.\n"
"Intersecting sketch entities or multiple faces in a sketch are not allowed.");
else
return new App::DocumentObjectExecReturn(e->GetMessageString());
}
catch (Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
}
App::DocumentObjectExecReturn *Pocket::execute(void)
{
// Handle legacy features, these typically have Type set to 3 (previously NULL, now UpToFace),
// empty FaceName (because it didn't exist) and a value for Length
if (std::string(Type.getValueAsString()) == "UpToFace" &&
(UpToFace.getValue() == NULL && Length.getValue() > Precision::Confusion()))
Type.setValue("Length");
// Validate parameters
double L = Length.getValue();
if ((std::string(Type.getValueAsString()) == "Length") && (L < Precision::Confusion()))
return new App::DocumentObjectExecReturn("Pocket: Length of pocket too small");
Part::Feature* obj = 0;
TopoDS_Face face;
try {
obj = getVerifiedObject();
face = getVerifiedFace();
} catch (const Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
// if the Base property has a valid shape, fuse the prism into it
TopoDS_Shape base;
try {
base = getBaseShape();
} catch (const Base::Exception&) {
return new App::DocumentObjectExecReturn("No sketch support and no base shape: Please tell me where to remove the material of the pocket!");
}
// get the Sketch plane
Base::Placement SketchPos = obj->Placement.getValue();
Base::Vector3d SketchVector = getProfileNormal();
// turn around for pockets
SketchVector *= -1;
try {
this->positionByPrevious();
TopLoc_Location invObjLoc = this->getLocation().Inverted();
base.Move(invObjLoc);
gp_Dir dir(SketchVector.x,SketchVector.y,SketchVector.z);
dir.Transform(invObjLoc.Transformation());
if (face.IsNull())
return new App::DocumentObjectExecReturn("Pocket: Creating a face from sketch failed");
face.Move(invObjLoc);
std::string method(Type.getValueAsString());
if (method == "UpToFirst" || method == "UpToFace") {
if (base.IsNull())
return new App::DocumentObjectExecReturn("Pocket: Extruding up to a face is only possible if the sketch is located on a face");
// Note: This will return an unlimited planar face if support is a datum plane
TopoDS_Face supportface = getSupportFace();
supportface.Move(invObjLoc);
if (Reversed.getValue())
dir.Reverse();
// Find a valid face or datum plane to extrude up to
TopoDS_Face upToFace;
if (method == "UpToFace") {
getUpToFaceFromLinkSub(upToFace, UpToFace);
upToFace.Move(invObjLoc);
}
getUpToFace(upToFace, base, supportface, face, method, dir, Offset.getValue());
// BRepFeat_MakePrism(..., 2, 1) in combination with PerForm(upToFace) is buggy when the
// prism that is being created is contained completely inside the base solid
// In this case the resulting shape is empty. This is not a problem for the Pad or Pocket itself
// but it leads to an invalid SubShape
// The bug only occurs when the upToFace is limited (by a wire), not for unlimited upToFace. But
// other problems occur with unlimited concave upToFace so it is not an option to always unlimit upToFace
// Check supportface for limits, otherwise Perform() throws an exception
TopExp_Explorer Ex(supportface,TopAbs_WIRE);
if (!Ex.More())
supportface = TopoDS_Face();
BRepFeat_MakePrism PrismMaker;
PrismMaker.Init(base, face, supportface, dir, 0, 1);
PrismMaker.Perform(upToFace);
if (!PrismMaker.IsDone())
return new App::DocumentObjectExecReturn("Pocket: Up to face: Could not extrude the sketch!");
TopoDS_Shape prism = PrismMaker.Shape();
// And the really expensive way to get the SubShape...
BRepAlgoAPI_Cut mkCut(base, prism);
if (!mkCut.IsDone())
return new App::DocumentObjectExecReturn("Pocket: Up to face: Could not get SubShape!");
// FIXME: In some cases this affects the Shape property: It is set to the same shape as the SubShape!!!!
TopoDS_Shape result = refineShapeIfActive(mkCut.Shape());
this->AddSubShape.setValue(result);
this->Shape.setValue(prism);
} else {
TopoDS_Shape prism;
generatePrism(prism, face, method, dir, L, 0.0,
Midplane.getValue(), Reversed.getValue());
if (prism.IsNull())
return new App::DocumentObjectExecReturn("Pocket: Resulting shape is empty");
// set the subtractive shape property for later usage in e.g. pattern
prism = refineShapeIfActive(prism);
this->AddSubShape.setValue(prism);
// Cut the SubShape out of the base feature
BRepAlgoAPI_Cut mkCut(base, prism);
if (!mkCut.IsDone())
return new App::DocumentObjectExecReturn("Pocket: Cut out of base feature failed");
TopoDS_Shape result = mkCut.Shape();
// we have to get the solids (fuse sometimes creates compounds)
TopoDS_Shape solRes = this->getSolid(result);
if (solRes.IsNull())
return new App::DocumentObjectExecReturn("Pocket: Resulting shape is not a solid");
solRes = refineShapeIfActive(solRes);
remapSupportShape(solRes);
this->Shape.setValue(solRes);
}
return App::DocumentObject::StdReturn;
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
if (std::string(e->GetMessageString()) == "TopoDS::Face" &&
(std::string(Type.getValueAsString()) == "UpToFirst" || std::string(Type.getValueAsString()) == "UpToFace"))
return new App::DocumentObjectExecReturn("Could not create face from sketch.\n"
"Intersecting sketch entities or multiple faces in a sketch are not allowed "
"for making a pocket up to a face.");
else
return new App::DocumentObjectExecReturn(e->GetMessageString());
}
catch (Base::Exception& e) {
return new App::DocumentObjectExecReturn(e.what());
}
}