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Toponaming/Part: cleanup FeatureExtrusion

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bgbsww
2024-03-18 09:08:34 -04:00
parent 946f8e9b0b
commit c75acb2d51
6 changed files with 155 additions and 218 deletions
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232
src/Mod/Part/App/ExtrusionHelper.cpp
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@@ -41,10 +41,14 @@
#include <Base/Console.h>
#include <Base/Exception.h>
#include <BRepClass3d_SolidClassifier.hxx>
#include <ShapeFix_Wire.hxx>
// #include <BRepLib_FindSurface.hxx>
#include "ExtrusionHelper.h"
#include "TopoShape.h"
#include "BRepOffsetAPI_MakeOffsetFix.h"
#include "Geometry.h"
using namespace Part;
@@ -478,138 +482,58 @@ void ExtrusionHelper::createTaperedPrismOffset(TopoDS_Wire sourceWire,
}
static TopoShape makEDraftUsingPipe(const std::vector<TopoShape> &_wires,
App::StringHasherRef hasher)
void ExtrusionHelper::makeElementDraft(const ExtrusionParameters& params,
const TopoShape& _shape,
std::vector<TopoShape>& drafts)
{
std::vector<TopoShape> shells;
std::vector<TopoShape> frontwires, backwires;
double distanceFwd = tan(params.taperAngleFwd) * params.lengthFwd;
double distanceRev = tan(params.taperAngleRev) * params.lengthRev;
if (_wires.size() < 2)
throw Base::CADKernelError("Not enough wire section");
std::vector<TopoShape> wires;
wires.reserve(_wires.size());
for (auto &wire : _wires) {
// Make a copy to work around OCCT bug on offset circular shapes
wires.push_back(wire.makECopy());
}
GeomLineSegment line;
Base::Vector3d pstart, pend;
wires.front().getCenterOfGravity(pstart);
gp_Pln pln;
if (wires.back().findPlane(pln)) {
auto dir = pln.Position().Direction();
auto base = pln.Location();
pend = pstart;
pend.ProjectToPlane(Base::Vector3d(base.X(), base.Y(), base.Z()),
Base::Vector3d(dir.X(), dir.Y(), dir.Z()));
} else
wires.back().getCenterOfGravity(pend);
line.setPoints(pstart, pend);
BRepBuilderAPI_MakeWire mkWire(TopoDS::Edge(line.toShape()));
BRepOffsetAPI_MakePipeShell mkPS(mkWire.Wire());
mkPS.SetTolerance(Precision::Confusion());
mkPS.SetTransitionMode(BRepBuilderAPI_Transformed);
mkPS.SetMode(false);
for (auto &wire : wires)
mkPS.Add(TopoDS::Wire(wire.getShape()));
if (!mkPS.IsReady())
throw Base::CADKernelError("Shape could not be built");
TopoShape result(0,hasher);
result.makEShape(mkPS,wires);
if (!mkPS.Shape().Closed()) {
// shell is not closed - use simulate to get the end wires
TopTools_ListOfShape sim;
mkPS.Simulate(2, sim);
TopoShape front(sim.First());
if(front.countSubShapes(TopAbs_EDGE)==wires.front().countSubShapes(TopAbs_EDGE)) {
front = wires.front();
front.setShape(sim.First(),false);
}else
front.Tag = -wires.front().Tag;
TopoShape back(sim.Last());
if(back.countSubShapes(TopAbs_EDGE)==wires.back().countSubShapes(TopAbs_EDGE)) {
back = wires.back();
back.setShape(sim.Last(),false);
}else
back.Tag = -wires.back().Tag;
// build the end faces, sew the shell and build the final solid
front = front.makEFace();
back = back.makEFace();
BRepBuilderAPI_Sewing sewer;
sewer.SetTolerance(Precision::Confusion());
sewer.Add(front.getShape());
sewer.Add(back.getShape());
sewer.Add(result.getShape());
sewer.Perform();
result = result.makEShape(sewer);
}
result = result.makESolid();
BRepClass3d_SolidClassifier SC(result.getShape());
SC.PerformInfinitePoint(Precision::Confusion());
if (SC.State() == TopAbs_IN) {
result.setShape(result.getShape().Reversed(),false);
}
return result;
}
void ExtrusionHelper::makEDraft(const ExtrusionParameters& params,
const TopoShape& _shape,
std::vector<TopoShape>& drafts,
App::StringHasherRef hasher)
{
double distanceFwd = tan(params.taperAngleFwd)*params.lengthFwd;
double distanceRev = tan(params.taperAngleRev)*params.lengthRev;
gp_Vec vecFwd = gp_Vec(params.dir)*params.lengthFwd;
gp_Vec vecRev = gp_Vec(params.dir.Reversed())*params.lengthRev;
gp_Vec vecFwd = gp_Vec(params.dir) * params.lengthFwd;
gp_Vec vecRev = gp_Vec(params.dir.Reversed()) * params.lengthRev;
bool bFwd = fabs(params.lengthFwd) > Precision::Confusion();
bool bRev = fabs(params.lengthRev) > Precision::Confusion();
bool bMid = !bFwd || !bRev || params.lengthFwd*params.lengthRev > 0.0; //include the source shape as loft section?
bool bMid = !bFwd || !bRev
|| params.lengthFwd * params.lengthRev > 0.0; // include the source shape as loft section?
TopoShape shape = _shape;
TopoShape sourceWire;
if (shape.isNull())
if (shape.isNull()) {
Standard_Failure::Raise("Not a valid shape");
}
if (params.solid && !shape.hasSubShape(TopAbs_FACE))
shape = shape.makEFace(nullptr, params.faceMakerClass.c_str());
if (params.solid && !shape.hasSubShape(TopAbs_FACE)) {
shape = shape.makeElementFace(nullptr, params.faceMakerClass.c_str());
}
if (shape.shapeType() == TopAbs_FACE) {
std::vector<TopoShape> wires;
TopoShape outerWire = shape.splitWires(&wires, TopoShape::ReorientForward);
if (outerWire.isNull())
if (outerWire.isNull()) {
Standard_Failure::Raise("Missing outer wire");
if (wires.empty())
}
if (wires.empty()) {
shape = outerWire;
}
else {
unsigned pos = drafts.size();
makEDraft(params, outerWire, drafts, hasher);
if (drafts.size() != pos+1)
makeElementDraft(params, outerWire, drafts);
if (drafts.size() != pos + 1) {
Standard_Failure::Raise("Failed to make drafted extrusion");
}
std::vector<TopoShape> inner;
TopoShape innerWires(0, hasher);
innerWires.makECompound(wires,"",false);
ExtrusionParameters copy = params;
copy.taperAngleFwd = params.innerTaperAngleFwd;
copy.taperAngleRev = params.innerTaperAngleRev;
makEDraft(copy, innerWires, inner, hasher);
if (inner.empty())
TopoShape innerWires(0);
innerWires.makeElementCompound(
wires,
"",
TopoShape::SingleShapeCompoundCreationPolicy::returnShape);
makeElementDraft(params, innerWires, inner);
if (inner.empty()) {
Standard_Failure::Raise("Failed to make drafted extrusion with inner hole");
}
inner.insert(inner.begin(), drafts.back());
drafts.back().makECut(inner);
drafts.back().makeElementCut(inner);
return;
}
}
@@ -625,8 +549,9 @@ void ExtrusionHelper::makEDraft(const ExtrusionParameters& params,
sourceWire.mapSubElement(shape);
}
else if (shape.shapeType() == TopAbs_COMPOUND) {
for(auto &s : shape.getSubTopoShapes())
makEDraft(params, s, drafts, hasher);
for (auto& s : shape.getSubTopoShapes()) {
makeElementDraft(params, s, drafts);
}
}
else {
Standard_Failure::Raise("Only a wire or a face is supported");
@@ -634,73 +559,48 @@ void ExtrusionHelper::makEDraft(const ExtrusionParameters& params,
if (!sourceWire.isNull()) {
std::vector<TopoShape> list_of_sections;
auto makeOffset = [&sourceWire](const gp_Vec& translation, double offset) -> TopoShape {
gp_Trsf mat;
mat.SetTranslation(translation);
TopoShape offsetShape(sourceWire.makETransform(mat,"RV"));
if (fabs(offset)>Precision::Confusion())
offsetShape = offsetShape.makEOffset2D(offset, TopoShape::JoinType::Intersection);
return offsetShape;
};
//first. add wire for reversed part of extrusion
if (bRev){
auto offsetShape = makeOffset(vecRev, distanceRev);
if (offsetShape.isNull())
Standard_Failure::Raise("Tapered shape is empty");
TopAbs_ShapeEnum type = offsetShape.getShape().ShapeType();
if (type == TopAbs_WIRE) {
list_of_sections.push_back(offsetShape);
}
else if (type == TopAbs_EDGE) {
list_of_sections.push_back(offsetShape.makEWires());
}
else {
Standard_Failure::Raise("Tapered shape type is not supported");
}
if (bRev) {
TopoDS_Wire offsetWire;
createTaperedPrismOffset(TopoDS::Wire(sourceWire.getShape()),
vecRev,
distanceRev,
false,
offsetWire);
list_of_sections.push_back(TopoShape(offsetWire, sourceWire.Tag));
}
//next. Add source wire as middle section. Order is important.
if (bMid){
// next. Add source wire as middle section. Order is important.
if (bMid) {
list_of_sections.push_back(sourceWire);
}
//finally. Forward extrusion offset wire.
if (bFwd){
auto offsetShape = makeOffset(vecFwd, distanceFwd);
if (offsetShape.isNull())
Standard_Failure::Raise("Tapered shape is empty");
TopAbs_ShapeEnum type = offsetShape.getShape().ShapeType();
if (type == TopAbs_WIRE) {
list_of_sections.push_back(offsetShape);
}
else if (type == TopAbs_EDGE) {
list_of_sections.push_back(offsetShape.makEWires());
}
else {
Standard_Failure::Raise("Tapered shape type is not supported");
}
// finally. Forward extrusion offset wire.
if (bFwd) {
TopoDS_Wire offsetWire;
createTaperedPrismOffset(TopoDS::Wire(sourceWire.getShape()),
vecFwd,
distanceFwd,
false,
offsetWire);
list_of_sections.push_back(TopoShape(offsetWire, sourceWire.Tag));
}
try {
#if defined(__GNUC__) && defined (FC_OS_LINUX)
#if defined(__GNUC__) && defined(FC_OS_LINUX)
Base::SignalException se;
#endif
if (params.usepipe) {
drafts.push_back(makEDraftUsingPipe(list_of_sections, hasher));
return;
// make loft
BRepOffsetAPI_ThruSections mkGenerator(params.solid ? Standard_True : Standard_False,
/*ruled=*/Standard_True);
for (auto& s : list_of_sections) {
mkGenerator.AddWire(TopoDS::Wire(s.getShape()));
}
//make loft
BRepOffsetAPI_ThruSections mkGenerator(
params.solid ? Standard_True : Standard_False, /*ruled=*/Standard_True);
for(auto &s : list_of_sections)
mkGenerator.AddWire(TopoDS::Wire(s.getShape()));
mkGenerator.Build();
drafts.push_back(TopoShape(0,hasher).makEShape(mkGenerator,list_of_sections));
drafts.push_back(TopoShape(0).makeElementShape(mkGenerator, list_of_sections));
}
catch (Standard_Failure &){
catch (Standard_Failure&) {
throw;
}
catch (...) {

23
src/Mod/Part/App/ExtrusionHelper.h
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@@ -34,6 +34,24 @@
namespace Part
{
class TopoShape;
/**
* @brief The ExtrusionParameters struct is supposed to be filled with final
* extrusion parameters, after resolving links, applying mode logic,
* reversing, etc., and be passed to extrudeShape.
*/
struct ExtrusionParameters
{
gp_Dir dir;
double lengthFwd {0};
double lengthRev {0};
bool solid {false};
double taperAngleFwd {0}; // in radians
double taperAngleRev {0};
std::string faceMakerClass;
};
class PartExport ExtrusionHelper
{
public:
@@ -70,9 +88,8 @@ public:
TopoDS_Wire& result);
/** Same as makeDraft() with support of element mapping
*/
static void makEDraft(const ExtrusionParameters& params, const TopoShape&,
std::vector<TopoShape>&, App::StringHasherRef hasher);
static void
makeElementDraft(const ExtrusionParameters& params, const TopoShape&, std::vector<TopoShape>&);
};
} //namespace Part

67
src/Mod/Part/App/FeatureExtrusion.cpp
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@@ -127,9 +127,9 @@ bool Extrusion::fetchAxisLink(const App::PropertyLinkSub& axisLink, Base::Vector
return true;
}
Extrusion::ExtrusionParameters Extrusion::computeFinalParameters()
ExtrusionParameters Extrusion::computeFinalParameters()
{
Extrusion::ExtrusionParameters result;
ExtrusionParameters result;
Base::Vector3d dir;
switch (this->DirMode.getValue()) {
case dmCustom:
@@ -229,11 +229,10 @@ Base::Vector3d Extrusion::calculateShapeNormal(const App::PropertyLink& shapeLin
return Base::Vector3d(normal.X(), normal.Y(), normal.Z());
}
TopoShape Extrusion::extrudeShape(const TopoShape& source, const Extrusion::ExtrusionParameters& params)
void Extrusion::extrudeShape(TopoShape &result, const TopoShape &source, const ExtrusionParameters& params)
{
gp_Vec vec = gp_Vec(params.dir).Multiplied(params.lengthFwd + params.lengthRev);//total vector of extrusion
#ifndef FC_USE_TNP_FIX
TopoDS_Shape result;
if (std::fabs(params.taperAngleFwd) >= Precision::Angular() ||
std::fabs(params.taperAngleRev) >= Precision::Angular()) {
//Tapered extrusion!
@@ -306,51 +305,57 @@ TopoShape Extrusion::extrudeShape(const TopoShape& source, const Extrusion::Extr
result = mkPrism.Shape();
}
if (result.IsNull())
if (result.isNull())
throw NullShapeException("Result of extrusion is null shape.");
return TopoShape(result);
#else // FC_NO_ELEMENT_MAP
// return TopoShape(result);
#else
// #0000910: Circles Extrude Only Surfaces, thus use BRepBuilderAPI_Copy
TopoShape myShape(source.makECopy());
TopoShape myShape(source.makeElementCopy());
if (std::fabs(params.taperAngleFwd) >= Precision::Angular() ||
std::fabs(params.taperAngleRev) >= Precision::Angular()) {
//Tapered extrusion!
# if defined(__GNUC__) && defined (FC_OS_LINUX)
if (std::fabs(params.taperAngleFwd) >= Precision::Angular()
|| std::fabs(params.taperAngleRev) >= Precision::Angular()) {
// Tapered extrusion!
#if defined(__GNUC__) && defined(FC_OS_LINUX)
Base::SignalException se;
# endif
#endif
std::vector<TopoShape> drafts;
ExtrusionHelper::makEDraft(params, myShape, drafts, result.Hasher);
ExtrusionHelper::makeElementDraft(params, myShape, drafts);
if (drafts.empty()) {
Standard_Failure::Raise("Drafting shape failed");
}else
result.makECompound(drafts,0,false);
}
else {
result.makeElementCompound(drafts,
0,
TopoShape::SingleShapeCompoundCreationPolicy::returnShape);
}
}
else {
//Regular (non-tapered) extrusion!
if (source.isNull())
// Regular (non-tapered) extrusion!
if (source.isNull()) {
Standard_Failure::Raise("Cannot extrude empty shape");
}
//apply reverse part of extrusion by shifting the source shape
// apply reverse part of extrusion by shifting the source shape
if (fabs(params.lengthRev) > Precision::Confusion()) {
gp_Trsf mov;
mov.SetTranslation(gp_Vec(params.dir) * (-params.lengthRev));
myShape = myShape.makETransform(mov);
myShape = myShape.makeElementTransform(mov);
}
//make faces from wires
// make faces from wires
if (params.solid) {
//test if we need to make faces from wires. If there are faces - we don't.
if(!myShape.hasSubShape(TopAbs_FACE)) {
if(!myShape.Hasher)
// test if we need to make faces from wires. If there are faces - we don't.
if (!myShape.hasSubShape(TopAbs_FACE)) {
if (!myShape.Hasher) {
myShape.Hasher = result.Hasher;
myShape = myShape.makEFace(0,params.faceMakerClass.c_str());
}
myShape = myShape.makeElementFace(nullptr, params.faceMakerClass.c_str());
}
}
//extrude!
result.makEPrism(myShape,vec);
// extrude!
result.makeElementPrism(myShape, vec);
}
#endif
}
@@ -358,12 +363,14 @@ TopoShape Extrusion::extrudeShape(const TopoShape& source, const Extrusion::Extr
App::DocumentObjectExecReturn* Extrusion::execute()
{
App::DocumentObject* link = Base.getValue();
if (!link)
if (!link) {
return new App::DocumentObjectExecReturn("No object linked");
}
try {
Extrusion::ExtrusionParameters params = computeFinalParameters();
TopoShape result = extrudeShape(Feature::getShape(link), params);
ExtrusionParameters params = computeFinalParameters();
TopoShape result(0);
extrudeShape(result, Feature::getTopoShape(link), params);
this->Shape.setValue(result);
return App::DocumentObject::StdReturn;
}

22
src/Mod/Part/App/FeatureExtrusion.h
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@@ -28,7 +28,7 @@
#include "FaceMakerCheese.h"
#include "PartFeature.h"
#include "ExtrusionHelper.h"
namespace Part
{
@@ -53,22 +53,6 @@ public:
App::PropertyAngle TaperAngleRev;
App::PropertyString FaceMakerClass;
/**
* @brief The ExtrusionParameters struct is supposed to be filled with final
* extrusion parameters, after resolving links, applying mode logic,
* reversing, etc., and be passed to extrudeShape.
*/
struct ExtrusionParameters {
gp_Dir dir;
double lengthFwd{0};
double lengthRev{0};
bool solid{false};
double taperAngleFwd{0}; //in radians
double taperAngleRev{0};
std::string faceMakerClass;
};
/** @name methods override feature */
//@{
/// recalculate the feature
@@ -82,11 +66,11 @@ public:
/**
* @brief extrudeShape powers the extrusion feature.
* @param result: result of extrusion
* @param source: the shape to be extruded
* @param params: extrusion parameters
* @return result of extrusion
*/
static TopoShape extrudeShape(const TopoShape& source, const ExtrusionParameters& params);
static void extrudeShape(TopoShape &result, const TopoShape &source, const ExtrusionParameters& params);
/**
* @brief fetchAxisLink: read AxisLink to obtain the direction and

27
tests/src/Mod/Part/App/FeatureExtrusion.cpp
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@@ -7,6 +7,7 @@
#include "BRepBuilderAPI_MakeEdge.hxx"
#include "PartTestHelpers.h"
#include "Mod/Sketcher/App/SketchObject.h"
class FeatureExtrusionTest: public ::testing::Test, public PartTestHelpers::PartTestHelperClass
{
@@ -298,3 +299,29 @@ TEST_F(FeatureExtrusionTest, testExecuteFaceMaker)
EXPECT_FLOAT_EQ(volume, len * wid * ext1);
EXPECT_TRUE(PartTestHelpers::boxesMatch(bb, Base::BoundBox3d(0, 0, 0, len, wid, ext1)));
}
TEST_F(FeatureExtrusionTest, testFaceWithHoles)
{
// Arrange
float radius = 0.75;
auto [face1, wire1, wire2] = PartTestHelpers::CreateFaceWithRoundHole(len, wid, radius);
// face1 is the sum of the outside (wire1) and the internal hole (wire2).
Part::TopoShape newFace = Part::TopoShape(face1).makeElementFace(nullptr);
// newFace cleans that up and is the outside minus the internal hole.
auto face2 = newFace.getShape();
auto partFeature = dynamic_cast<Part::Feature*>(_doc->addObject("Part::Feature"));
partFeature->Shape.setValue(face2);
_extrusion->Base.setValue(_doc->getObjects().back());
_extrusion->FaceMakerClass.setValue("Part::FaceMakerCheese");
// Act
_extrusion->execute();
Part::TopoShape ts = _extrusion->Shape.getValue();
double volume = PartTestHelpers::getVolume(ts.getShape());
Base::BoundBox3d bb = ts.getBoundBox();
// Assert
EXPECT_FLOAT_EQ(volume, len * wid * ext1 - radius * radius * M_PI * ext1);
EXPECT_TRUE(PartTestHelpers::boxesMatch(bb, Base::BoundBox3d(0, 0, 0, len, wid, ext1)));
EXPECT_FLOAT_EQ(PartTestHelpers::getArea(face1), len * wid + radius * radius * M_PI);
EXPECT_FLOAT_EQ(PartTestHelpers::getArea(face2), len * wid - radius * radius * M_PI);
}

2
tests/src/Mod/Part/App/PartTestHelpers.cpp
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@@ -111,6 +111,8 @@ CreateFaceWithRoundHole(float len, float wid, float radius)
auto edge5 = BRepBuilderAPI_MakeEdge(circ1).Edge();
auto wire2 = BRepBuilderAPI_MakeWire(edge5).Wire();
auto face2 = BRepBuilderAPI_MakeFace(face1, wire2).Face();
// Beware: somewhat counterintuitively, face2 is the sum of face1 and the area inside wire2,
// not the difference.
return {face2, wire1, wire2};
}