DiscussionsIssue archiveOpen Cascade Applications

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Open Cascade Applications

Technical discussions preserved from the public OCCT community forum.

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Showing 60 discussions, ordered by the latest archived activity.

Question about development and API binding priority

I'm developing a rust application, and part of that process is developing the bindings. I'm kinda learning as I go. I was wondering if anyone could share some advice on what bindings to prioritize, and if there is a discussion hub that is active specifically on the topic of app development?

0 replies

CascadeScope - BRepGraph-Powered 3D Viewer

Dear community, We are pleased to introduce CascadeScope - a project built for internal debugging and as a demonstration of the power of BRepGraph . CascadeScope is a GUI application that uses BRepGraph as its core representation, with all algorithms built on top of it. Repository: https://github.co

0 replies

Is CAD Builder still in development?

Hello, The latest version of CAD Builder is still based on Shaper 9.9.0. It's been 3 years ever since and there's a lot of features added to the software from past releases. Is there any plans to release a new version built on top of 9.14.0? While there's nothing wrong about using Salome on Windows,

3 replies

surface morphing

Hi I am looking for a surface morphing algorithm. I have a nominal surface and set of point that rest on that surface. I also have new positions of these points in the 3D space. I would like to move(morph) my nominal surface to the new points. Thanks, Author

2 replies

pyOC

Good evening, I need APIs to do the following (I want to use pyOC): 1) Import a STEP CAD file. 2) Recognize edges and surfaces (each numbered with an ID). 3) Create a row of evenly spaced points on each edge. 4) Generate a grid of evenly spaced points on each surface using U,V coordinates (at this s

0 replies

Fully portable CAD Assistant

Hi, is there any way to make CadAssistant for Windows fully portable?: latest version saves CadAssistant.ini files into AppData folder, leaving traces behind and disallowing to keep configuration files in the location of the portable files, without further intervention. Thanks.

1 reply

OCCT 7.1 how to pass light limit?

I am using CADRays 1.0.0 and it has light limit. I cant add more than 8 light. Is there is a command for pass it?

2 replies

CAD Assistant sometimes creates invalid GLTF files (from STEP)

I tested the conversion of STEP files to GLTF from various files available from CAx Interoperability Forum (see attachment) and found that some of the exported GLTFs are not valid. I tested them using the VS Code glTF Tools , which internally uses the official Khronos glTF Validator . The files neit

7 replies1 file

CADRays not applying any changes?

I installed CADRays on my old computer but it doesnt works properly. I installed vcredist also. I have i5 3rd generation processor. CADRays is opening. I am starting Bottle example it is loading but I cant apply any kind of material. I am selecting a material or changing color but nothing happens. W

1 reply

Face Selection in Salome

This will sound like a stupid question, but I have been struggling for four days and have nowhere else to go. I have a STEP file of a CAD that I uploaded to the Geometry in Salome 9.12 (I am using Windows 10). It's a CAD of a box, and inside the box, there is a geometry of an aircraft. When I try to

0 replies

CAD assistant - Converter DLL

i want to develop using my own program just the file conversion. what DLL or libraries to use ? any documentation might help. mainly purpose is to convert STEP to OBJ file. Thanks.

1 reply

CADRays is not showing any textures? (files uploaded)

Hello I have CADRays on my both 2 pc's but no one is showing any kind of texture. Why I can't understand. I tried so many textures (png/jpeg) and so many models but its not showing. Is there is a solution? and I am not one person having this kind of problem.

16 replies7 files

Build/Compile application

Have problem to build any application using open cascade libraries. Tried the example projects at https://dev.opencascade.org/doc/overview/html/samples__projects.html Tried cmake with various error messages in some cases with complain about 3rd party QT libraries and generated Makefile that do absol

12 replies

CAE application

Hello, I would like some general advise on the development on a CAE application. Im trying to use OCCT for civil engineering purposes. Basically, i would like to 1. Read and visualize a landXML file. This file could for instance describe road alignments for bridge design, ie 3D curves. 2. Read and v

0 replies

CAD Assistant v1.6.1 - Wrong density for material.

Hello Everyone, I have two assemblies with steel as the material . Now the density is around 7850 kg/m3 or 7.85g/cm3 . Now in one of the assemblies it shows 0.00785 g/cm3 which is wrong. Is this a bug? Thanks, Author

2 replies3 files

CADRays Texture Problem

Hi, we are rendering our products with CADRays. But we have some problems. We have a render a half year ago we did. We used textures on this render. Now we want to render it again but when we import it to CADRays textures are not loading. When we try to add textures its not giving any error but its

9 replies2 files

Pleas help CADRAYS

My problem is I am opening CADRays, I am importing a STEP file and I am trying to add texture on it but CADRays doesn't shows my textures. I tried different images but no one works. Can somebody help? Why CADRays not showing textures?

0 replies

CADRays not showing textures

My problem is I am opening CADRays, I am importing a STEP file and I am trying to add texture on it but CADRays doesn't shows my textures. I tried different images but no one works. Can somebody help?

1 reply

Saving Cadrays Camera positions

Hi, I am trying to save current camera positions and store / restore them after changing my view. This is the current script in my project: vsetcolorbg 255 255 255 box table 7000 7000 40 vdisplay table vdefaults -angDefl 07 Graphic3d_Camera V3d_View::Camera(1) I know this is where i am wrong: Graphi

1 reply1 file

IGES Crash (CAD Assistant with OCCT 7.7.0)

Got crash with valid IGES file. File is in attachment. OpenCASCADE 7.7.0.dev-IR-2021-11-19-c1e15aa538 CAD Assistant 1.6.1 build 2022-01-16.

1 reply2 files

How can I compile CADRays

I'm sorry for my question but I dont know how to do it. I want to download CADRays source code and I want to compile it and I want to use it exe. I am so sorry again for my question but I didnt compile any source code yet and I dont know how to do it. Can somebody tell me how to do it and what I nee

0 replies

Is CADRays Still Developing? What is latest version?

Is CADRays is still developing and its not developing why? I love to use it but maybe you can add some features more. And what is the latest version is CADRays? We have 1.0.0 is there is new version or not? And if there is new version from where we can get it?

2 replies

CAD assistant UP direction/rotation for .WRL to .GLB conversion

First off, thank you for making CAD assistant available. It is by far the best tool I have used for editing .WRL and .GLB files. Unfortunately I am running into a quite annoying issue. When I open my .WRL model(exported from kicad) it defaults to having the board facing up. See the attached image. I

1 reply2 files

Command line conversion

Is there anyway to convert a STEP file to (e.g.) GLTF via the CAD Assistant command line - i.e. without a UI.?

0 replies

Exploded view CAD-assistant

Goodday, i was wondering if it is possible to make an exploded view of an step-file in CAD-assistant? If so how? If not is it an idea to add it in as feature if possible? these function can help me alot in rendering and onsite assembling of complex parts. please let me know if its possible and or if

0 replies1 file

Cylinder shapes are not smooth - CADRAYS/FREECAD

Hi We are using freecad and exporting our models in .STEP format. And we are rendering models on cadrays but our models in cylinder shape and on freecad its smooth but when we are open this models on cadrays its not smooth.Why and how we can fix it? In first picture model in freecad and its not smoo

1 reply5 files

CAD-Assistant - Solids location changes after rotation

Hi, I'm trying to do rotation on top level / root labels of step file and got some strange behavior of CAD Assistant. When selecting root compound with 2 shapes and rotaing it the 2 compounds seem to set their world space to localspace and snap back to identity. I did a small gif to show what I mean

2 replies2 files

Help installing CADRays

I get an error while trying to run CADRays "The code execution cannot proceed because MSVCR120.dll was not found..." I installed Visual Studio 2015 from the following link " https://aka.ms/vs/17/release/vc_redist.x86.exe" , with no difference. Any help will be greatly appreciated. This program is ex

4 replies2 files

Cad Assisstant software VR

HI dears How I can connect occulus 2 to the cad assistant, is that possible, I want to view it in VR thanks

1 reply

Unable to find step export option

Hi , I am a new user of cad assistant. I am trying to import a large JT files and export only a subassembly of it in step format. I could not find step format in the export option. Any advice will be helpful.

1 reply2 files

Cant open CADRays after downloading

With Microsoft visuals C++ 13, 15, and 17, i'm still getting error codes when i try to open CADRays. Cant someone help me out with this? I'm on the lastest version of windows 10 and did a system clean before doing any of this. Thanks.

3 replies2 files

CAD Assistant Error occurs while opening DXF file

Hi all, I'd like to report a bug. While opening a certain DXF file an error occurs. I have attached the file occuring the error and also one, which is similar, but could open without an error. The files are exported from Solid Edge 2021.The cause of the error would be a callout (text: testz), where

1 reply1 file

Error converting STEP file to GLB

Hello, I sometimes encounter an error converting a STEP file to a GLB file using CAD Assistant. I have attached an example file that causes the issue I am referring to. I believe this happens every time the exception "RWGltf_CafWriter skipped node X without triangulation data" is raised. To reproduc

7 replies3 files

Commercial Application Distribution

I read the "GNU LGPL version 2.1 (with some minor additional permissions)" but it is gibberish for me, someone tell me If I develop an using OpenCascade can I distribute my app with my own licensce (fully closed source code) I dont wanna use gpl or lgpl. Or any other open-source like license.

1 reply

How to add shortcut in CAD Builder?

I'm a user of CAD Builder 1.2.0, and I have found only one shortcut in the Preferences Module Shortcuts page. I want to know how to add shortcuts in CAD Builder?

1 reply

Optimize glb export drawcalls

Hi, I notice that exporting a CAD file to GLB produces a lot of draw calls. While CAD assistant seems to handle the load, this is not the case for other viewers (e.g. windows 3D viewer). I tried optimizing the models with another library and this reduces the number of draw calls by roughly ten while

2 replies5 files

Run headless FreeCAD without installation for basic operation

Hello Team, We can open FreeCAD without GUI i.e. Headless FreeCAD. Here my questioin is , using FreeCAD we just want to export NX exported STEP file back to OCCT/FreeCAD STEP just by perfrorming open & export operation using macro/script at the back-end using Headless FreeCAD so here i wanted to kno

0 replies

Access CAD Assistant the the back end for STEP file open & save operation

Hello Team, Can we use CAD Assistant tool at the backend to open & save STEP/STP file using OCCT api or is there any API to access open & save operation of CAD Assistant. The exported STEP file we got from CAD Assistant is differnt than we just save the file using OCCT library. Please assist it's re

1 reply

CADBuilder Scripting Crash with addInterpolation function

Hello, I using a script to import around 50 points into CADbuilder and interpolate a curve from them. After I import the points I attempt to create a line using the addInterpolation function and the imported points. When I do CadBuilder crashes. I can still accomplish the interpolation with 50 point

0 replies1 file

How to open CAD Assistant on iOS programatically?

The company I work for have a mobile app on which our users can browse construction equipment documentation: PDF with operating manuals, technical specs PDF, word documents and so on. Among those, we also have “IFC” files – 3D models a user can download and view. For the Android app, I just open the

9 replies

FreeCAD file support in CAD Assistant?

Hello, Are there any plans to support the viewing of FreeCAD (.FCStd) files in CAD Assistant? I'm not a programmer but I actually experimented a little by unpacking a .FCStd file (it's basically a zip file) and renaming the .brp files it contains to .brep. These appear to open perfectly in CAD Assis

0 replies

CAD Assistant Error: glb linked textures

Hi, I would like to report a bug to you, CAD Assistant for Linux, when you save a GLB file with the textures, it generates a new folder with the images used inside but these images have zero bytes in size and are no longer recognized, to avoid this I have to copy the original images in the folder wh

4 replies1 file

IOS Support CAD Assistant

After installation of CAD Assistant on a new IPad Pro 2020 I am not able to import a Step file. The open dialog only shows the samples, the documents folder is empty and trying to open the step file in CAD Assistant ends in an error message "file not found". The last update was 2018. Is there still

8 replies1 file

Export PNG without brown background

Hi all, is there a way to export the object with a transparent background? Or at least change the brown to white. Thanks alot!

9 replies2 files

Robot Simulaiton in CAD Assistant

Hello all, I came across a Robotic Simulation example in CAD Assistant posted by Open Cascade in Youtube . https://www.youtube.com/watch?v=fv_OtzXiq7M I am wondering how to use them or create such an animation tool for my robotic application.. Any leads would be helpful. Regards, Vishnuu

0 replies

visualization of multi-JT

Hi all, I am trying to open and display few JT files in the same scene. Does anybody knows if it's possible? I suppose that I need to merge few JtData_Model but I am not able to figure out how to do it.

1 reply

OpenGL error message on launching CAD Assistant

Hello! I have installed CAD Assistant on a PC with Windows 10 Pro 64 bit. Users connect to this PC via thin client terminals. When CAD Assistant is launched on the PC, it runs just fine. When CAD Assistant is launched via a thin client terminal, it results in the error message "CAD Assistant require

2 replies1 file

JT to OBJ problem (Triangulations?)

Hello, Hoping to get some help as I am a beginner user. I have an excellent .JT 3d file of my workplace, created by a 3rd party company. I would like to convert this file to obj format for blender animation program. To run simple animations showing pipes and tanks etc. I have CAD assistant which is

7 replies2 files

What 3D formats supported ?

Hi What formats supported by OpenCascade (to read shapes from and save (export) shapes to), exept STL, STEP, IGES ? For example SLDPRT, 3D DWG supported ? Regards, Author

7 replies

change color backgroud cad assistant

hi Is it possible to change the background color in the settings? There are 3 modes: 1) black 2) Gradient 3) Sky box I was looking for the white color thank you

1 reply1 file

How can I convert DXF to STL (or other CAD formats) ?

I love CAD Assistant. It has saved me a butt load of work in the past. Sadly, while it supports every major CAD format it does not open DXF files. Does anyone know how I would go about converting a DXF file to STL or OBJ ? Thanks, -f

3 replies