Public issue archive
Public and community records, ordered by the most recent archived update.
Showing 80 issue records.
Community · OCCT:Shape Healing
Applying ShapeFix_Shape to the attached brep causes a crash. Setting aSfs.FixSolidMode() = false avoids this issue, maybe because this is a Moebius-type shape, but it should not cause a crash anyway. TopoDS_Shape shape ; BRep_Builder builder ; BRepTools::Read(shape, "Attachm
Community · OCCT:Modeling Data
Hello, With the attached brep, I get a volume of 329.6, but with CADAssistant I get a volume of 334.6. Why is there a difference please ? TopoDS_Shape lShape ; BRep_Builder lBuilder ; GProp_GProps lProperties ; BRepTools::Read(lShape, "Attachment 1 (BREP)", lBuilder) ;
Community · OCCT:Modeling Algorithms
Hello, The whole Attachment 1 (BREP) (see attached files) is considered as common part between Attachment 1 (BREP) and Attachment 7 (BREP) but that's clearly wrong (see attached picture) BRepAlgoAPI_Common lBuilder ; lBuilder.SetRunParallel(false) ; TopTools_ListOfShape lArgs ; T
Community · OCCT:Modeling Algorithms
Hi ! BRepAlgoAPI_Common can give no result although there is clearly a big common part between 2 shapes (see attached picture) You can use Tool and Argument joined in "NotAttachment 1 (ZIP)"
Community · OCCT:Modeling Algorithms
Hello, There are sometimes bad results in math_DirectPolynomialRoots::Solve(const Standard_Real a, const Standard_Real b, const Standard_Real c, const Standard_Real d, const Standard_Real e) We don't get the right results, with values: a=1.0000000000000004 b=-2.[revision removed]
Community · OCCT:Modeling Algorithms
Hello, The attached file is well seen on some CAD softwares, but import it with OCC gives a flat surface instead on a volume with 20 um of thickness. This code allows to scale the shape and see clearly the (bad) result : STEPControl_Reader reader ; reader.ReadFile("C:\\Attac
Community · OCCT:Modeling Algorithms
Hello, I try to use BRepAlgoAPI_Cut between 2 shapes. I should have a shape as result but I get an empty TopoDS_Shape. BRepAlgoAPI_Cut lBuilder ; BRep_Builder lBRepBuilder ; TopTools_ListOfShape lArgs ; TopoDS_Shape lArg, lTool ; BRepTools::Read(lArg, "Attachment 2 (BREP)&qu
Open CASCADE · OCCT:Modeling Algorithms
The class BRepClass3d_SolidExplorer has the field myBox, and it is computed during initialization of the class instance. But this property is never used in the current configuration. It is used only if preprocessor definition MARCHEPASSIUNESEULEFACE is defined in the file BRepCla
Community · OCCT:Modeling Algorithms
when a1 is not 0 and a2 is not 2 Pi and angle is not 2 Pi things go south: BRepPrimAPI_MakeTorus(axis, r1, r2, a1, a2, angle) Other combination of values may also be problematic. See discussion in forum. #include <iostream> #include <gp_Ax2.hxx> #include <TopoDS_Sh
Community · OCCT:Modeling Algorithms
IntPatch_InterferencePolyhedron is used in IntPatch_PrmPrmIntersection to compute two bi-parametrised surfaces intersection. In order to accelerate calculations use Bnd_BoundSortBox to collect intersect boxes. BRepExtrema_OverlapTool use BVH and get relatively fast speed. So I su
Community · OCCT:Modeling Algorithms
Bnd_Box have the same data and provide update function, and HLRAlgo_PolyData::Box only have data do not have update function, so there are many code about the box update. d
Community · OCCT:Modeling Algorithms
According to the Coons parametric equation(see the attach picture), the parameter U should used to evaluate the point on Coons patch, in the 7.2.0 source code, the parameter U is commented as follows: //gp_Pnt GeomFill_CoonsAlgPatch::Value(const Standard_Real U, gp_Pnt GeomFill_C
Community · OCCT:Modeling Algorithms
In file src/BRepLib/BRepLib.cxx, line 411: for (ii = 0 ; ii < 3 ; ii++ ) { should be changed to for (ii = 1 ; ii < 3 ; ii++ ) { Since ii == 0 always results in obtaining a null pointer Curve2dPtr after calling the first line BRep_Tool::CurveOnSurface (this function expects
Open CASCADE · OCCT:Mesh
The method BRepMesh_Delaun::isVertexInsidePolygon classifies a point inside 2D polygon calculating cumulative angle from the point to all segments. I found out that for a CCW polygon the angle computed by that procedure will be equal to -2PI. However, the final condition checks t
Open CASCADE · OCCT:Modeling Data
Usage of BRepTopAdaptor_SeqOfPtr leads to potential memory leaks (see 0031009). This issue proposes to get rid of BRepTopAdaptor_SeqOfPtr and substitute it by the collection of a certain type. Entities of this class are used in BRepTopAdaptor_FClass2d and IntTools_FClass2d. NA
Open CASCADE · OCCT:Documentation
OCCT team have new approach with reporting bug or features and questions. Bugs or features: Mantis: [archived tracker link removed] GH Issues: https://github.com/Open-Cascade-SAS/OCCT/issues GH Report issue: https://github.com/Open-Cascade-SAS/OCCT/issues/new/choose _ Question or
Community · OCCT:Modeling Algorithms
I made a solid shape using boolean operations on some simple primitives like spheres, cylinders and boxes. Some of the source elements have fillet added. Then I tried adding more fillets and BRepFilletAPI_MakeFillet::Add() hangs on adding an edge. This is fully reproducible in DR
Community · OCCT:Modeling Algorithms
BRepBuilderAPI_MakePolygon will be crash when apply some polygon. BRepBuilderAPI_MakePolygon MP; MP.Add(gp_Pnt(0,0,0)); MP.Add(gp_Pnt(30,100,0)); MP.Add(gp_Pnt(40,20,0)); MP.Add(gp_Pnt(100,0,0)); MP.Add(gp_Pnt(70,45,0)); MP.Add(gp_Pnt(50,50,0)); MP.Add(gp_Pnt(60,70,0)); MP.Add(gp
Community · OCCT:Modeling Algorithms
This issue came from the FreeCAD community. The following exception message is generated: Draw[14]> blend res a 0.1 a_5 An exception was caught [revision removed] : Standard_Failure: There are no suitable edges for chamfer or fillet ** Exception ** [revision removed] : Standar
Community · OCCT:Modeling Algorithms
Crash on attempt to unify same domain for two cylinder shells restore Attachment 1 (OC2) unifysamedom unify_res cyl2
Community · OCCT:Visualization
Issue when AIS_ViewCube set to Top and AIS_ViewController bind MouseGesture with AIS_MouseGesture_RotateView The steps about the issue are as follows: First, In class AIS_ViewController add MouseGesture AIS_MouseGesture_RotateView to myMouseGestureMap in its constructor function.
Open CASCADE · OCCT:Foundation Classes
After reorganization of Standard_Type as a part of 7.8.0 there is a problem with releasing type_info objects. Needs to prepare maintance patch to avoid crash. Minor release will include full reorginization of Standard_Type to avoid using mutex mappint iteration
Community · OCCT:Data Exchange
IGESControl_Writer with mode=1 missing Model Curves in Transfer_FinderProcess I'm trying to set name and color attributes for Curves when exporting to BRep IGES files, but the Curve IGES entities are missing the Curve entities in the Transfer_FinderProcess. The attached example p
Community · OCCT:Modeling Algorithms
The following code causes access to null shape and as a result - crash. I think it was caused by 0029204: BRepOffsetAPI_MakePipeShell produces invalid result and raises exception in Draw double tol = 6.[revision removed]-07; sweep.SetTransitionMode(BRepBuilderAPI_TransitionMode::
Community · OCCT:Shape Healing
ShapeFix_Shape crashes with a segfault when given a shape that contains faces without a surface pointer, for example if the shape is tessellated or triangulated, or contains tessellated / triangulated subshapes. 1) Load a step file with tessellated geometry 2) Run ShapeFix_Shape
Community · OCCT:Shape Healing
ShapeUpgrade_UnifySameDomain crashes with a segfault when given a shape that contains faces without a surface pointer, for example if the shape is tessellated or triangulated, or contains tessellated / triangulated subshapes. 1) Load a step file with tessellated geometry 2) Run S
Community · OCCT:Mesh
Hello, With the attached shape, when I give to BRepMesh_IncrementalMesh a more accurate deflection I get a bad mesh at specfic areas. BRepMesh_IncrementalMesh lIncrMesh ; lIncrMesh.SetShape(lShape) ; // Good result lIncrMesh.ChangeParameters().Deflection = 0.09 ; lIncrMesh.Perfor
Community · OCCT:Modeling Algorithms
Hello, Cutting an cylinder with anoter one to get a thickness doesn't work with a thickness < 4e-5. Here I attached 2 cases : thickness of 3e-5 and thickness of 4e-5. // Parameters const gp_Ax2 lTransform ; // Default value double lThickness = 3.0e-5 ; // First cylinder TopoDS
Community · OCCT:Modeling Algorithms
Hello ! BRepAlgoAPI_Common builder returns no common part in some case, although there is clearly a big common part, as you can see on the joined picture. BRepAlgoAPI_Common builder with the argument and tool joined in "NotAttachment 1 (ZIP)" file returns no common part
Community · OCCT:Modeling Algorithms
Hi ! BRepAlgoAPI_Common give no result although there is clearly a big common part between 2 shapes (see attached picture) You can use Tool and Argument attached in "NotAttachment 1 (ZIP)" file
Community · OCCT:Modeling Algorithms
With BRepAlgoAPI_Common, I manage to create an edge with an INTERNAL orientation and linked to a single face, and this edge seems to have no meaning. This is a bad artifact because my resulting shape is not considered a manifold since there is only one connection for this edge, i
Community · OCCT:DRAW
We used the OCC API to convert from STP to GLB, but an error occurred. After conversion, there was damage on the curved surfaces, and some triangular facets were missing. STP file before conversion:Attachment 4 (STP) → Attachment 7 (PNG) GLB file after conversion: Attachment 3 (G
Community · OCCT:Modeling Algorithms
Hi ! BRepAlgoAPI_Common gives no result although there is clearly a big common part between 2 shapes (see attached picture) You can use Tool and Argument attached in "NotAttachment 1 (ZIP)".
Community · OCCT:Modeling Algorithms
From 2 TopoDS_Shape, I perform a BRepAlgoAPI_Common operation and the result shape is empty. I set an identical translation in Y for the 2 shapes, I do it again and now I have a common shape. I should not. BRepAlgoAPI_Common lBuilder ; lBuilder.SetRunParallel(false) ; TopTools_Li
Open CASCADE · OCCT:Data Exchange
Assimp is a powerful interface to handle 40 CAD formats: https://github.com/assimp/assimp
Community · OCCT:Modeling Algorithms
The sweeping fails with the provided traceline and profiles when using the RightCorner transition mode: "An exception was caught 0x641d8902c600 : StdFail_NotDone: BRep_API: command not done" The sweeping does not fail with the default Transformed transition mode, but th
Community · OCCT:Data Exchange
An issue to start a pull request to write simple key value attributes to STEP geometry: https://github.com/Open-Cascade-SAS/OCCT/discussions/631 https://github.com/Open-Cascade-SAS/OCCT/issues/629
Open CASCADE · OCCT:Data Exchange
When read step file contains the GDT with complex type of measure(main value). The GDT value does set to XCAD (0,0 by default) It is needed to update handle measure as a complex type too (use a base class to keep the entity) Complex measure type is a StepRepr_ReprItemAndLengthMea
Community · OCCT:Data Exchange
For some STEP files we fail for geometric tolerances to read the "geometric_tolerance.magnitude" as a StepBasic_MeasureWithUnit. The parameter 3 may be of type StepRepr_ReprItemAndLengthMeasureWithUnitAndQRI or StepRepr_ReprItemAndPlaneAngleMeasureWithUnitAndQRI. There
Community · OCCT:Modeling Algorithms
incorrect (to big) bounding box for imported STEP file => see attached screenshot FreeCAD 1.0.0 - using OpenCascade 7.8.1 1) start FreeCAD 1.0.0 2) load attached STEP file "Attachment 2 (STP)" 3) display the bounding box via menu: View >> Bounding box 4) turn t
Community · OCCT:Modeling Algorithms
With BRepAlgoAPI_Common, I manage to create an edge with an INTERNAL orientation and linked to a single face, and this edge seems to have no meaning. This is a bad artifact because my resulting shape is not considered as manifold since there is only one connection for this edge,
Community · OCCT:Modeling Algorithms
Hi, I use BRepAlgoAPI_Common to get the intersection between 2 shapes and the result is an empty shape, but it shouldn't. I give you the example below. Tried with v7.9.1 BRepAlgoAPI_Common lBuilder ; lBuilder.SetRunParallel(false) ; TopTools_ListOfShape lArgs ; TopTools_ListOfSha
Community · OCCT:Data Exchange
STEP import: change in colors of BRep see the attached screenshots: + with OpenCascade 7.3.0 the colors are still fine + with OpenCascade 7.6.0 the colors are changed / mixed up STEP file to investigate is attached NOTE: pls ignore the red dots and the bounding box Import BRep of
Community · OCCT:Data Exchange
NOTE: bug is reproducible with OCC 7.7.2 and OCC 7.8.0 === ATTACHMENTS === + Attachment 2 (ZIP) NOTE: contains ReadMe.txt + STEP file "M_5SV33466KL_SIEMENS.stp" (zipped) === REPRODUCTION === The attached Visual Studio 17 solution exemplifies in an STEP to DXF command li
Community · OCCT:Modeling Algorithms
we have a STEP file that was generated / saved with OC 7.3.0 === OK / GOOD === with OC 7.3.0 we still were able to generate the right and left hand 2D views === BUG / REGRESSION === with OC 7.6.0, 7.7.0, 7.7,2 the right and left hand 2D views cannot be generated any more due to a
Community · OCCT:Data Exchange
generation of 2D FRONT view results in erroneous frame corners NOTE: bug is reproducible with OCC 7.7.2 see attached: + STEP-to-DXF-CmdLineTool.zip NOTE: contains ReadMe.txt + STEP file NOTE: contains several nested frames + screenshot of front view NOTE: defective corners marked
Community · OCCT:Modeling Algorithms
generation of 2D views results in erroneous graphics / lines => see attached screenshot "A_B_N_140MT_D9N_A16_A.stp--Right.png" => see the four attached DXF files Bug reproducible with OC 7.3.0, OC 7.6.0, OC 7.7.0 and OC 7.7.2 (others OC versions we did not test) =
Community · OCCT:Modeling Algorithms
generation of FRONT view fails with Standard_OutOfRange Exception => Handle_HLRBRep_Data::NbEdges() == 0 NOTE: bug is reproducible with OCC 7.7.2 === ATTACHMENTS === + Attachment 2 (ZIP) NOTE: contains ReadMe.txt + STEP file "E009003dEC7133Jcosyplus_wifi_3d.step" can
Community · OCCT:Modeling Algorithms
infinite loop in HLRBRep_InternalAlgo::Update() generating 2D view of right hand side from STEP file NOTE: OpenCascade 7.7.0 still affected by this infinite loop see attached: + Attachment 3 (ZIP) NOTE: contains ReadMe.txt + STEP file + screenshot of call stack of infinite loop i
Community · OCCT:Data Exchange
=== BUG === OpenCascade 7.6.2 (as used by FreeCAD 0.20) displays an unexpected sphere for this STEP file => see the huge orange sphere on the attached screenshot === Regression === OpenCascade 7.5.3 (as used by FreeCAD 0.19) does not yet display this unexpected sphere => th
Community · OCCT:Modeling Algorithms
Generating 2D front view from STEP file: Handle_HLRBRep_Data::NbEdges() == 0 BUG: no edges are returned for the front view => see error message of the cmdline tool The contained Visual Studio 17 solution exemplifies in an STEP to DXF command line tool how we use OpenCascade to
Community · OCCT:Data Exchange
Hi, I have a simple App, which tells OCCT to read and mesh a STEP file. The result is written to a VRML file: app->NewDocument("BinXCAF", doc); auto success = reader.Perform(input, doc); if (!success) { std::cout << "ERROR!\n"; return -1; } shapeTool
Open CASCADE · OCCT:Modeling Algorithms
Draw hungs up in BRepAlgoAPI_Cut function during loading e3i-file in Gallery but does not hung up in Gallerydeb. To reproduce the bug it is necessary to launch XSDRAWE3I and call eucbrep /disk8/DET/QA/TOP009/TOP191.e3i In Gallarydeb the file is loaded about 20 sec but in Gallery
Community · PRODUCTS:DXF Import
DXF Importer leaves wires open when importing. It seems to happen with any arbitrary DXF-file. ShapeFix_Wire will fix it though, but I would expect that the imported object would be valid in the first place. Just import the uploaded DXF-file and check out whether the wire of the
Community · OCCT:Modeling Algorithms
This occurs in OCCT 7.9.0 and is caused by to https://github.com/Open-Cascade-SAS/OCCT/pull/374. In previous versions of OCCT, applying a transformation with theCopyGeom=true to a Degenerate Edge worked, but after issue 374 the transformed Degenerate Edge is missing a 2D curve an
Community · OCCT:Application Framework
The attached file can be imported and features correct surfaces and spatial trimming loops. However parametric loops are wrong. See attached image for an example: _ the blue surface should be a rectangle, but the side on the left is eroded, making it curvy; _ additionally the sid
Open CASCADE · OCCT:Visualization
Loaded vertex is invisible in 2D viewer in spite of that it is present in it. (Requirement source files can be taken from attachment of OCC182)
Community · OCCT:Modeling Algorithms
The code in the next box crashes in the end. It works OK if you comment out the BRepMesh_IncrementalMesh(shape0, 0.5, Standard_False, hPi); line BTW this form has problems. It crashes when I click submit void BRepBuilderAPI_GTransformTst::Test0() { // Rectange double width = 2; d
Open CASCADE · OCCT:Documentation
In the current version of OCCT documentation, several flaws are reported regarding OCCT "Tutorials and Samples" and "User Guides" manual sections. Based on the Teams meeting the following action list is presented: 1) Proofreading (+fact-checking and content-re
Open CASCADE · OCCT:Foundation Classes
TKMath contains very specific things related to BSplines, Bounding boxes, Geometry computations, and stuff around gp classes, i.e. low-level functionality related to geometry. TKernel provides general functionality like Type basics, OSD, and also the general purpose and independe
Community · OCCT:Modeling Algorithms
TCollection_IndexedDataMap::FindFromKey error when sweeping along BezierCurve pload ALL restore unsweepable1-draw-Sweep-0-spine.brep renamevar unsweepable1-draw-Sweep-0-spine Sweep-0-spine mksweep Sweep-0-spine setsweep -CF restore unsweepable1-draw-Sweep-0-section-00-Circle.brep
Community · OCCT:Modeling Algorithms
OCCT V7_7_0_beta and V7_7_0 NCollection_IndexedDataMap::FindFromKey exception in BRepOffsetAPI_MakePipeShell when sweeping a single profile along a simple wire from a NURBS. In DRAW: pload ALL restore "spine.brep" s restore "profile.brep" p mksweep s setsweep
Community · OCCT:Modeling Algorithms
After union of a box and a cylinder fillet operation fails on edge of the intersection in case when cylinder intersects an edge of the box. See the attached C:\DISoft\Keep\Attachment 1 (CPP) It happens in OCCT 7.8.0, 7.7.0, 7.5.0 and 6.9.1 Debug the attached Attachment 1 (CPP) wi
Open CASCADE · PRODUCTS:Documentation
The code blocks are broken when using the latest version of doxygen. This patch provides the replacement for syntax, excluding the broken highlighting mechanics from the blocks by replacing the ~~~~{.***} .... ~~~~ with \verbatim ... \endverbatim as proposed by Dmitry.
Community · OCCT:Data Exchange
When reading nist_stc_07_asme1_ap242-e3.stp there is an exception in src/STEPCAFControl/STEPCAFControl_Reader.cxx line 3007. gp_Ax2 anA(aPnt, aDir, aDirR); This is a correct behavior, as the two passed directions are colinear. The reason are in lines 3004-6. aDir.SetCoord(aDirArr
Community · OCCT:Modeling Data
Beginning in OpenCASCADE v7.7, the method BRepTools_NurbsConvertModification::NewPolygon can fail to create a curve, but return Standard_True anyway. This is FreeCAD bug 9760: https://github.com/FreeCAD/FreeCAD/issues/9760. DRAW script: pload ALL bsplinecurve bc 2 2 0 3 1 3 0 3 0
Community · OCCT:Application Framework
Currently, in the AIS_ViewController, we have the method UpdateMouseButtons (AIS/Attachment 3 (CXX):712) Inside it, the library increment the index by one each time we trigger a mouse button, we increment a counter by one. And this counter is only reset when the mouse click is de
Open CASCADE · OCCT:Visualization
V3d_View provides functionality displaying rectangular or circular grid on the screen. Current implementation is quite basic and displays fixed number of line segments. It is desired improving this functionality or providing substitution. Possible extensions: - Dynamic grid step
Open CASCADE · OCCT:Visualization
After calling AIS_InteractiveContext::Redisplay() / AIS_InteractiveContext::RecomputeSelectionOnly() highlighting state might keep removed Owner, which can be later selected. pload MODELING OCAF XDE VISUALIZATION # Create a green cube and add it in the document XNewDoc aDoc set a
Open CASCADE · OCCT:Visualization
Currently AIS_Manipulator supports only one presentation with thick arrows. In some applications another skin might be preferred - with thin arrow-less axes. Not required
Open CASCADE · OCCT:Visualization
It's proposed to implement Set/Get methods to change this value for the view. It will be useful when this view is used in QQuickFramebufferObject.
Open CASCADE · OCCT:Visualization
AIS_Manipulator relies on PrsMgr_PresentableObject::LocalTransformation() to read/set object transformation, but when attaching to object having Graphic3d_TMF_ZoomPers persistence, manipulator behavior is unusable as Manipulator is not consider Graphic3d_TransformPers::AnchorPoin
Open CASCADE · OCCT:Configuration
OCCT allows to create static version of libraries, however it does not allow to use them in any kind of project except LGPL ones which makes OCCT quite impractical and makes features like webassembly merely a toy. OCCT license represents a modification of the general LGPL license
Open CASCADE · OCCT:Data Exchange
Some of parsing functionality is still not thread safaty. Needs to add mutex for maintance patch and wait for global fix for minor release
Community · OCCT:Modeling Algorithms
All the intersections of two offset curves, each of the offset curves having a basis curve being an arc of ellipse, are not detected by the GeomAPI_ExtremaCurveCurve algorithm. In the attached pictures you can see the two original arcs and the two offset curves on those arcs. Thi
Community · OCCT:Modeling Algorithms
Intersection between a circle and a line not detected WHEN TANGENT when using either Geom2dAPI_InterCurveCurve or GeomAPI_ExtremaCurveCurve. For a more visual view, see picture here: https://forum.freecadweb.org/viewtopic.php?f=10&t=31371 Basically: 1. If a line is tangential
Open CASCADE · OCCT:Modeling Data
Command "checkshape" does not define self-crossing for some wires and assigns status "valid" for them.
Open CASCADE · OCCT:Configuration
Create cmake procedures for successfull Qt installation (necessary libs and dlls for inspector and qt samples)
Community · OCCT:Modeling Algorithms
A bug exists in BRepFill_PipeShell or BRepFill_Sweep (as BRepFill_PipeShell relies on this class) when using a spline as the spine wire. This appears to be the same unresolved issue described here: https://dev.opencascade.org/content/brepoffsetapimakepipeshell-bspline-error The i
Open CASCADE · OCCT:Configuration
When OCCT is compiled somewhere outside the workstation where it is supposed to be used, e.g. by CI/CD, it becomes impossible to start DRAWEXE on target workstation, because all paths in env.{bat|sh} and custom.{bat|sh} are hardcoded with absolute paths corresponding to the file