Using Assembly 4. Last updated 07-02-2020

File->New
Assembly->New Model
Close -> Save -> Reopen
Select model
Assemby->New Body
Double click in Body
Create Schetch
Select XY plane
Draw a Rectangle -> Close
Pad ->Acept
Select model
New Coordinate System -> Select random Edge -> Acept
Select LCS_1
Edit datum -> Select Another Edge -> Accept ->Crash

OS: Ubuntu 18.04.3 LTS (KDE/plasma)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19. Last daily On 7-02-2020
Build type: Release
Python version: 3.6.9
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Spanish/Spain (es_ES)

If I attempt to add a view with a model selected from the Assembly4 workbench, it does not add the view to the render project. In my case, I was attempting to add the view to a Povray project. If a select a body from within one of the models, I can add that to the view.

OS: macOS Mojave (10.14)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.19323 (Git)
Build type: Release
Branch: master
Hash: 1b198453b8eb6aa2eaca4e4be4b49fee74e9de6e
Python version: 3.8.1
Qt version: 5.12.5
Coin version: 4.0.0
OCC version: 7.4.0
Locale: English/Canada (en_CA)

Expected behavior

• Start of rendering when clicking on perform the render button and project selected.

Actual behavior

• No rendering starts even with LuxCoreRender or Appleseed

Steps to reproduce the problem

• Create a simple cube in Part for instance
• Give it a material in appearance (for instance stone)
• Switch to Render studio
• Create a LuxRender project
• Select luxrender_standard.lxs
• Create a cam from actual position
• Select the cube and create a render view from it
• Select the LuxRender project and click on render button
• Find out that nothing is happening

Specifications like the version of the project, operating system, or hardware

• FreeCAD version: 0.18.4
• OS: Windows 10
• Version: 10.0.17763 Build 17763
• Processor: Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz, 2712 Mhz, 4 Core(s), 8 Logical Processor(s)
• RAM: 16 GB
• LuxCoreRender version: Standalone release v2.3
  Also tried with:
• Appleseed version: 2.1.0-beta

Report view

'PartDesign.Feature' object has no attribute 'Visibility'Running the Python command 'Render' failed:
Traceback (most recent call last):
  File "C:\Users\MBorgognon\AppData\Roaming\FreeCAD\Mod\Render\Render.py", line 1095, in Activated
    project.Proxy.render()
  File "C:\Users\MBorgognon\AppData\Roaming\FreeCAD\Mod\Render\Render.py", line 422, in render
    objstrings = [get_rdr_string(v) for v in views if v.Source.Visibility]
  File "C:\Users\MBorgognon\AppData\Roaming\FreeCAD\Mod\Render\Render.py", line 422, in <listcomp>
    objstrings = [get_rdr_string(v) for v in views if v.Source.Visibility]

'PrimitivePy' object has no attribute 'Visibility'

https://wiki.freecadweb.org/Import_Export only mentions raytracing wb.

Unfortunately issue #146 was closed, and I can't reopen it:

Well, I don't intend to substitute myself for the documentation of each renderer. But if you want to add some instructions to the doc, contributions are welcome. Some answers nevertheless:
LuxCore is by default an endless rendering engine.
If you want to stop it, you have to set up halt conditions, see here (e.g. via the command line).
To export rendering, the way I've found (I don't pretend it is the best) is: Tool --> Image View + Film --> Save outputs. Filename is set in Window --> Film Outputs editor

Thanks for that info. The link says:

The file ending of the render configuration file is ".cfg", for the scene file it's ".scn".
These files are usually created by exporter plugins, e.g. BlendLuxCore.

In this case Im guessing the export plugin is FreeCAD? Where does freecad create the configuration file so one can set a stop condition?

After installing FreeCAD-render manually or with Addon Manager I got an error popup when switching to Render workbench:

Title: Error on switching workbench (Translated from german)
Message: Expected maxsize to be an integer or None

Furthermore there is no Render tab in the settings section.

FreeCAD v0.18
Win 10

I created this material with the Render workbench Create Material.
After awhile it started throwing these errors and fails to recompute:

20:03:10  Traceback (most recent call last):
  File "/home/michael/.local/share/FreeCAD/Mod/Render/./Render/material.py", line 111, in execute
    super().execute(obj)
  File "/tmp/.mount_FreeCA4se9RQ/usr/Mod/Arch/ArchMaterial.py", line 403, in execute
    p.ViewObject.ShapeColor = c
<class 'AttributeError'>: 'Gui.ViewProviderDocumentObject' object has no attribute 'ShapeColor'
20:03:10  Recompute failed! Please check report view.

FreeCAD info:

OS: Ubuntu 20.04.4 LTS (ubuntu:GNOME/ubuntu)
Word size of FreeCAD: 64-bit
Version: 0.20.29177 (Git) AppImage
Build type: Release
Branch: (HEAD detached at 0.20)
Hash: 68e337670e227889217652ddac593c93b5e8dc94
Python 3.9.13, Qt 5.12.9, Coin 4.0.0, Vtk 9.1.0, OCC 7.5.3
Locale: C/Default (C) [ OS: English/South Africa (en_ZA) ]
Installed mods: 
  * fasteners 0.3.50
  * Manipulator 1.4.9
  * Render 2022.2.0
  * sheetmetal 0.2.50

Finally found this space :) I'm MisterMaker on the forum.
So I been testing cycle render settings.
And so I did a lot of rendering.
And suddenly it stopped working, I got an error.
So I checked if I got the correct xml file by dragging it on the cycles.exe And that works so nothing wrong with my xml files.
But I think what goes wrong is the temp folder where these xml files are stored is running out of characters:

So I think the length of that temp dir should be a bit shorter, although I have no idea what I am doing so could be something completely different issue.

Like lots of testing has been done:
```
aa_samples="2"
ao_samples="100"
mesh_light_samples="2"
subsurface_samples="0"
volume_samples="0"
diffuse_samples="1"
glossy_samples="1"
transmission_samples="0"
min_bounce="0"
max_bounce="8"
max_diffuse_bounce="4"
max_glossy_bounce="4"
max_volume_bounce="0"
max_transmission_bounce="0"
sample_clamp_direct="1"
sample_clamp_indirect="10"
method="branched_path"
sample_all_lights_direct="true"
sample_all_lights_indirect="true"
caustics_reflective="true"
caustics_refractiv="true"
seed="98"
transparent_min_bounce="2"
transparent_max_bounce="7"
filter_glossy="1"
sampling_pattern="sobol"
/>

Hello,

(Please note: I have also asked this on the FreeCAD forum but didn't get any responses...)

I am posting here as I believe this is a bug in the render workbench but am happy to be told otherwise...

I have previously successfully rendered an assembly4 model using the render workbench with cycles:

I now have a new assembly4 model and am unable to get it to render correctly:

As you can see the bottom half of the model is not rendered at all, the base doesn't exist and the background is black.

I have double checked all of the render settings and model links etc. but I cannot see what is the difference between my two models which is causing this issue.

I have updated to the latest version of the Assembly4 and Render workbenches.

Does anyone have any suggestions or insight as to what could be going wrong?

Alternatively, any tips on how I could debug this myself?

I have made available the 2 assembly models here:

https://f001.backblazeb2.com/file/vectronic-public/freecad/render-working.zip (main model file: brick_assembly.FCStd)

https://f001.backblazeb2.com/file/vectronic-public/freecad/render-broken.zip (main model file: brick_assembly_2.FCStd)

Thanks very much,
Nick

Just wondering if there was any interest for Render WB to offer proposals as part of GSoC2022 ?
Mentoring a student to add features etc...

Hello, sorry about reopen a closed issue.
Even defined "mixed" a "glass" material, giving 10% of transparency for that material I see no difference of rendering.
It seems transp value was ignored (cycles engine).
Where am I wrong?
assy_flange_transp_bad.zip

(continued from #38 )
@howetuft

I agree the material setup should be simple for rendering. We could take diffuse color from the already existing entry in the material card in freecad and turn it into a material for all renderers. If they define an IOR, we could also assume they mean a glass and use some default values for the renderer's glass material.

I also don't think we should deprive users from customizing their materials any further. This includes allowing them to specify renderer specific material properties.

Each renderer has specific material properties not really shared by other renderers. This has to do with how the renderer works internally and I haven't found a way to specify something more generally that would include all possible algorithms with their parameters. Let alone the existing "simple ones" currently used by the renderers we support.

I propose if the user wants to input specific parameters for their materials for a renderer, we should allow them. If it's not there, we'll fall back on standard values.

Hi,

I found that the render workbench does not take into account the placement of parts in which bodies are placed when doing the rendering. If the part itself is added to the render workbench instead of the bodies, it works ok for placement - BUT this then prevents the use of multiple materials. This is important in e.g. the case of a wheel - you would have a part representing the wheel consisting of a rubber tyre, a steel hub and an aluminium hub cap for example.

Please see attached file for an example.

Thanks!

Brutha

Render with part added to workbench (correct positioning):

Render with individual bodies added:

Render_part_bug.FCStd.zip

Dear all!

I was facing following issue after installing the workbench over the Addon manager. I'm using the portable version. Any ideas how to fix it?

br Martin

OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4 (GitTag)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 980bf9060e28555fecd9e3462f68ca74007b70f8
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)

The temporary exported file between FreeCAD and renderer appears to be stored in the FCStd file, which can inflate the latter a lot (see this issue: https://forum.freecadweb.org/viewtopic.php?f=3&t=55297&p=475481#p475481).
We should avoid such an unexpected embedding mechanism...

ref: https://www.freecadweb.org/wiki/Template:DevWorkbenches

Hi,
Thx for the great work! I recently got menaged to setup render workbench with Luxcorerender on Ubuntu.
It works so far, but I have some minor inconvenience. When start render it never stops. It does endless passes. When I close the window, the rendered image is displayed in Freecad.

Is there a possibility to set amount of passes for the renderer?

Hello, setting transparency values lower than 100% I've no visible effects, engine cycles.
Here a value of 100%:

and here the same at 10%:

Where am I wrong?
Best regards
assy_flange_transp_bad.zip

https://www.freecadweb.org/wiki/Sandbox:Kerkythea
https://forum.freecadweb.org/viewtopic.php?t=8861

CC @marmni

twitter thread: https://twitter.com/wenzeljakob/status/1549710217616711680

git repo: https://github.com/mitsuba-renderer/mitsuba3

It did work one time. Latest Render WB from add-on manager.

[Render] Cannot render view 'Sketch@baseGroup@cascoGroup@LuxcoreProject': Mesh topology is empty (file /home/x/.FreeCAD/Mod/Render/renderables.py, line 164 in check_renderables). Skipping...
20:34:49  [Render] Cannot render view 'Sketch006@bobbelGroup@cascoGroup@LuxcoreProject': Mesh topology is empty (file /home/x/.FreeCAD/Mod/Render/renderables.py, line 164 in check_renderables). Skipping...
20:34:49  [Render] Cannot render view 'Sketch009@bergingGroup@cascoGroup@LuxcoreProject': Mesh topology is empty (file /home/x/.FreeCAD/Mod/Render/renderables.py, line 164 in check_renderables). Skipping...
20:34:49  [Render] Cannot render view 'berging@cascoGroup@LuxcoreProject': Mesh topology is empty (file /home/x/.FreeCAD/Mod/Render/renderables.py, line 164 in check_renderables). Skipping...
20:34:49  Running the Python command 'Render' failed:
Traceback (most recent call last):
  File "/home/x/.FreeCAD/Mod/Render/Render.py", line 1031, in Activated
    project.Proxy.render()
  File "/home/x/.FreeCAD/Mod/Render/Render.py", line 576, in render
    img = renderer.render(obj, prefix, external, output, width, height)
  File "/home/x/.FreeCAD/Mod/Render/rendererhandler.py", line 108, in render
    return self.renderer_module.render(project,
  File "/home/x/.FreeCAD/Mod/Render/renderers/Luxcore.py", line 328, in render
    pageresult.read(project.PageResult)
  File "/tmp/.mount_FreeCA2rKUZa/usr/lib/python3.8/configparser.py", line 697, in read
    self._read(fp, filename)
  File "/tmp/.mount_FreeCA2rKUZa/usr/lib/python3.8/configparser.py", line 1082, in _read
    raise MissingSectionHeaderError(fpname, lineno, line)

File contains no section headers.
file: '/tmp/FreeCAD_Doc_e7c87a6a-4d97-4b1b-bdf1-b68145e651d5_764e4c_4889/LuxcoreProjectceylsqgm.lxs', line: 3
'Renderer "sampler"\n'

OS: Debian GNU/Linux 10 (buster) (XFCE/lightdm-xsession)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 2021.0126.23662 +3142 (Git) AppImage
Build type: Release
Branch: LinkStage3
Hash: 9732f5f35d54bd1546daaffc9c9cff7e2f0e0249
Python version: 3.8.6
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.4.0
Locale: English/United States (en_US)

cv-hok.zip

Hi I am currently using Render Workbench with LuxCore to render my projects which is working fine. But now I would like to add textures, I have done it with Arch texture but I can't get them to render.
Please I need documentation and help to render with textures. I have seen it done in this thread https://forum.freecadweb.org/viewtopic.php?f=10&t=39168&start=20#p335686 but I have no idea how to do that.

Thanks

https://www.ospray.org/

FreeCAD/FreeCAD-addons#200

Examples:
HakanSeven12/Trails@fc173b8
HakanSeven12/Trails@4ba2736

Here are some changes attached as a gzipped patch (sorry, I can't set up a development environment with git etc, or I'd just make a pull request). This is against the 0.18-15619 Conga Python3+Qt5 build.

Notes:

• Most of the changes are for Python3 compatibility, I believe. If you are planning on maintaining python2 compatibility in 0.18 then it all needs testing with python2.
• Using the fd from tempfile.mkstemp simplifies things and may eliminate a tiny security hole.
• Some general tidying up. Really what should be done for renderers/*.py is have the camdata parsing factored out of writeCamera() and moved up into Renderer.py, since it's the same code for all renderers.
• One change to support Qt5, I think. I don't know if Qt < 5 needs that UnicodeUTF8 argument to QApplication.translate.

Hope this helps.

render-wb.patch.gz

When rendering a simple cube with POV-Ray for me the normals are clearly wrong.

This is a image with the normals created by the POV-Ray Renderer:

And this is the same cube but with the normal_vectors commented out

The one without normals is what i would expect. Is there a reason why normals are written?

Maybe it is because i used POV-Ray 3.7 for rendering.

FreeCAD Version used

OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.17803 (Git)
Build type: Release
Branch: master
Hash: 89961a33d46063a43e9fb5b0308ca95d559eca94
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Austria (de_AT)

I found out , that in some cases "Render" command fails to parse camera postition string.
Error would be : could not convert string to float: 'nearDistance'
I traced the error , to function _def writeCamera(self,obj,renderer):_ (in Render.py) , and added print(obj.Camera.split("\n"));
That printed following:

['#Inventor V2.1 ascii', '', '', 'PerspectiveCamera {', ' position 27.867077 40.412739 -14.756536', ' orientation -0.95309168 0.25545603 -0.16235299 2.0523489', ' nearDistance 0.16419823', ' farDistance 673.90247', ' focalDistance 46.530952', ' heightAngle 0.78539819', '', '}', '']

Afterwards by changing projection type to Ortographic, it worked ok , and output was :

['#Inventor V2.1 ascii', '', '', 'OrthographicCamera {', ' viewportMapping ADJUST_CAMERA', '
position 64.90593 24.760017 -31.036333', ' orientation -0.84704894 0.44858563 -0.28509498 2.1539059', ' nearDistance 61.745361', ' farDistance 78.708572', ' aspectRatio 1', ' focalDistance 69.416023', ' height 57.506119', '', '}', '']

Afterwards I changed back to perspective and it worked as well:

['#Inventor V2.1 ascii', '', '', 'PerspectiveCamera {', ' viewportMapping ADJUST_CAMERA', ' position 64.90593 24.760017 -31.036333', ' orientation -0.84704894 0.44858563 -0.28509498 2.1539059', ' nearDistance 61.745361', ' farDistance 78.708572', ' aspectRatio 1', ' focalDistance 69.416023', ' heightAngle 0.78539819', '', '}', '']

the difrerence seems to be in missing viewportMapping ADJUST_CAMERA in the first case.

after viewing source code I found out that it is relying on constant indexing , which could break in some cases.
So I pre-parsed the string using dictionaries, and accessing data by key name instead of index. It seems to work now.

So, my version now looks like :
`def writeCamera(self,obj,renderer):

    # camdata contains a string in OpenInventor format
    # ex:
    # #Inventor V2.1 ascii
    #
    #
    # PerspectiveCamera {
    #  viewportMapping ADJUST_CAMERA
    #  position 0 -1.3207401 0.82241058
    #  orientation 0.99999666 0 0  0.26732138
    #  nearDistance 1.6108983
    #  farDistance 6611.4492
    #  aspectRatio 1
    #  focalDistance 5
    #  heightAngle 0.78539819
    #
    # }
    #
    # or (ortho camera):
    #
    # #Inventor V2.1 ascii
    #
    #
    # OrthographicCamera {
    #  viewportMapping ADJUST_CAMERA
    #  position 0 0 1
    #  orientation 0 0 1  0
    #  nearDistance 0.99900001
    #  farDistance 1.001
    #  aspectRatio 1
    #  focalDistance 5
    #  height 4.1421356
    #
    # }

    if not obj.Camera:
        self.setCamera(obj)
        if not obj.Camera:
            FreeCAD.Console.PrintError(translate("Render","Unable to set the camera"))
            return ""
   
    camdata = obj.Camera.split("\n")
    camdata_dict={}
    # parse to dictionary , so that we are no longer relying on fixed indexing
    for entry in camdata:
            #test if element is empty                
            trimmed = entry.lstrip()
            if not trimmed:
                    continue
            values=trimmed.split(" ")
            camdata_dict[values[0]]=entry

    
    cam = ""
    pos = [float(p) for p in camdata_dict["position"].split()[-3:]]        
    pos = FreeCAD.Vector(pos)        
    rot = [float(p) for p in camdata_dict["orientation"].split()[-4:]]        
    rot = FreeCAD.Rotation(FreeCAD.Vector(rot[0],rot[1],rot[2]),math.degrees(rot[3]))        
    target = rot.multVec(FreeCAD.Vector(0,0,-1))
    target.multiply(float(camdata_dict["focalDistance"].split()[-1]))#focalDistance ?
    target = pos.add(target)
    up = rot.multVec(FreeCAD.Vector(0,1,0))

    return renderer.writeCamera(pos,rot,up,target)`

I am extremely new to python, so I don't know about how fast or slow my code is, but It should be more robust.

Also , I don't quite understand how to branch and make pull request to commit my changes

Hello,

Is it possible to setup a scene and render it using python scripting? (Automation)
I mean, no clicking on UI involved?

Thanks

Hello,

I'd like to report a rendered image clipping issue in the FreeCAD UI. I have set the rendered image size to larger than the default value i.e. in the screenshot it is 1200x1600.

This occurs sometimes and I can't work out how to cause it, or better still prevent it....

Regardless of whether I select "1:1 scale" or "Fit image" I get the results attached:

• for "1:1 scale" it seems the right scale, but the image is cropped and there is no scrolling possible
• for "Fit image" the whole image is visible but it doesn't seem to fill the available window space

I have set an output file (attached) and you can see it does render to the correct required size.

I have also attached the FreeCAD file.

--

OS: macOS 10.16
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24054 (Git)
Build type: Release
Branch: master
Hash: ed873038025277f220dfaa058599a0dfbb435835
Python version: 3.8.6
Qt version: 5.12.5
Coin version: 4.0.0
OCC version: 7.4.0
Locale: English/United Kingdom (en_GB)

brick_4x2.FCStd.zip

In "Render.py", "sys" is not imported.
Gives out error in FreeCAD 0.17 (master branch, pulled and compiled at April 19, 2018).

This fixes it:
import os,re,tempfile,FreeCAD,importlib,sys

Been digging around in the Blender files and testing out settings, currently already got huge improvements.
What I am still missing is: Exposure settings as these seem too low.
And how to enable noise filtering as this would reduce render times hugely.

I have been digging true cycles source to find these settings:
https://developer.blender.org/diffusion/C/
Below settings come from this file:
https://developer.blender.org/diffusion/C/browse/master/src/render/integrator.cpp

I have the following settings:

<cycles>

    <!-- Camera -->
    <camera width="1920" height="1080" />

    <!--RaytracingCamera-->

    <!-- Integrator -->
    <integrator 
	aa_samples="2"
	ao_samples="100"
	mesh_light_samples="2"
	subsurface_samples="0"
	volume_samples="0"
	diffuse_samples="1"
	glossy_samples="1"
	transmission_samples="0"
	min_bounce="0"
 	max_bounce="8"
	max_diffuse_bounce="4"
	max_glossy_bounce="4"
	max_volume_bounce="0"
	max_transmission_bounce="0"
	sample_clamp_direct="1"
	sample_clamp_indirect="10"
	method="branched_path" 
	sample_all_lights_direct="true" 
	sample_all_lights_indirect="true"
	caustics_reflective="true"
	caustics_refractiv="true"
	seed="98"
	transparent_min_bounce="2"
	transparent_max_bounce="7"
	filter_glossy="1"
	sampling_pattern="sobol"
	/>
	    <!-- Background Shader -->
    <background>
        <background name="bg" strength="2.0" color="0.2, 0.2, 0.2" />
        <connect from="bg background" to="output surface" />
    </background>
	
    <!--RaytracingContent-->
	
</cycles>

Hi,

I've tried to use cycles on debian but I'm having quite a lot of troubles.

I pointed to /usr/bin/blender since that's the only executable I can call and afaiu it should work. However the default parameter --samples is unrecognized but also hard-coded ones like --output. According to https://docs.blender.org/manual/en/latest/advanced/command_line/render.html the invocation should be very different. I'm not familiar with blender/cycles so I don't know if there's maybe different executables with different command-line interfaces; in any case on debian (testing), there doesn't seem to be something dedicated for cycles.

How about a step-by-step set of instructions to make this super easy to understand and follow?

http://forums.luxcorerender.org/viewtopic.php?t=895

On Windows appleseed fails to load the object files with following error message:

failed to load mesh file c: emp_i3busjne.obj: i/o error.
Thus interrupts the process with
failed to load project file ...
Inspecting the project file reveals that there is an tab inserted between "c:" and the rest of the path. Probably this is due to the unescaped character sequence "\t" in "c:\temp...".

OS: Windows 10 Enterprise Version 10.0.14393
FreeCAD: 0.19.19758

Please tell me, if additional information is required.

Hi, I saw some updates to lights and probably materials. Should be possible get a measure of "light" reflected by a known surface under a known area light or other to get the ratio of power each render requires? Using something like form factor emission or similar maybe.
I would try your last update of the code but substituting all the github code at the same module in Mod I get errors.
This using FreeCAD_0.20-1-2022-08-20-conda-Linux-x86_64-py310.AppImage.
Finally, if you need a tester for materials I could try.
Best regards

There is an FC forum thread called [Architecture Masterpiece] Church of The Light. It would really benefit from an actual rendering the image to show how light illuminates the space of the structure. Is there someone interested in making this happen?

I get the following error message.
14:59:37 Unable to locate renderer executable. Please set the correct path in Edit -> Preferences -> Render

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.27428 (Git)
Build type: Release
Branch: master
Hash: 27460358508a2057e0ec57a418641435f12628dd
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.3
Locale: English/United States (en_US)

The "Output Image" setting appears to be ignored. The file is being saved to a system temp directory:

/var/folders/jj/x61lmscx3438lchdc_yw78b00000gn/T/FreeCAD_Doc_8831487d-8319-4c94-b198-5bd8e0e34eec_a14926_68563/PovrayProjectdqhmuly4.png

I could not find where the file is copied to the "Output Image" in render.py so added the following to the povray.py module:

diff --git a/renderers/Povray.py b/renderers/Povray.py
index 715dbfe..7e97df1 100644
--- a/renderers/Povray.py
+++ b/renderers/Povray.py
@@ -161,9 +161,15 @@ def render(project,prefix,external,output,width,height):
         args = re.sub("\+H[0-9]+","+H"+str(height),args)
     else:
         args = args + "+H"+str(height)+" "
+    if output:
+        args = args + "+O" + output + " "
+    FreeCAD.Console.PrintError("Renderer command: " + prefix+rpath+" "+args+project.PageResult+"\n")
     import os
     os.system(prefix+rpath+" "+args+project.PageResult)
-    imgname = os.path.splitext(project.PageResult)[0]+".png"
+    if output:
+        imgname = output
+    else:
+        imgname = os.path.splitext(project.PageResult)[0]+".png"
     
     return imgname

I followed the 4 step guide, using LuxCoreRender, however the rendering never stops. It just keeps going. I can't find information on where to set it to stop and return the render.

Maybe the README could be updated with some information. When one searches for answers to these problems one finds blender tutorials and outdated tutorials for FreeCAD Raytracing WB.

I get following error when trying to open workbench in FreeCAD:

19:34:17  invalid literal for int() with base 10: '19.4'
19:34:17  Traceback (most recent call last):
  File "<string>", line 104, in Initialize
  File "/usr/lib/python3.10/site-packages/shiboken2/files.dir/shibokensupport/__feature__.py", line 142, in _import
    return original_import(name, *args, **kwargs)
  File "/home/maciej/.FreeCAD/Mod/FreeCAD-render/Render/__init__.py", line 30, in <module>
    from Render.constants import (  # noqa: F401
  File "/usr/lib/python3.10/site-packages/shiboken2/files.dir/shibokensupport/__feature__.py", line 142, in _import
    return original_import(name, *args, **kwargs)
  File "/home/maciej/.FreeCAD/Mod/FreeCAD-render/Render/constants.py", line 55, in <module>
    FCDVERSION = int(App.Version()[0]), int(App.Version()[1])

FreeCAD version 0.19.4 build 1_voidlinux

Works just fine when I modified it like this, but I know this isn't solution to this problem:

FCDVERSION = int(19), int(4)

https://wiki.freecadweb.org/Render_Workbench
It needs to be re-written...but maybe just in summary and linking to the documentation on this repo...?

Hello, I've some problem with the glass assigned to a part.
Is there a way to link a "local" setting to a "passthrough" set for pbrt?
Even if glass keeps a 100% of transp my result is opaque.
Regards

Hallo, I'd like to see a support to pbrt. Now with the v4 they have a gpu support that runs very fast. My try merging a triangulated mesh with a simple header from a pbrt example for lights and camera was amazing. I'm unable anyway to assign the proper materials to the proper subassemblies. I'd like to start to write at least an input file for pbrt from inside freecad. Grateful for any suggestion.
Best regards

I'm trying to place area lights and point lights, and I can use the combo view to edit the position by hand, but I can't use the edit->placement dialogs? Is this intentional?

render workbench v: 2022.1.0

OS: Fedora 34 (Workstation Edition) (GNOME/gnome)
Word size of FreeCAD: 64-bit
Version: 0.20.27319 (Git) AppImage
Build type: Release
Branch: (HEAD detached at 67706b1)
Hash: 67706b14df32b91b948952ea2c9350948ba4d4db
Python version: 3.9.10
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.3
Locale: English/United States (en_US)

YafaRay is a free open-source montecarlo raytracing engine released under the LGPL 2.1 license. Raytracing is a rendering technique for generating realistic images by tracing the path of light through a 3D scene.

sweethome3d just announced: http://sweethome3d.com/support/forum/viewthread_thread,9678

Website: http://www.yafaray.org/
Github: https://github.com/YafaRay/Core
It uses the LGPL 2.1 license

Would there be interest to have this in FreeCAD-Render ?

https://wiki.freecadweb.org/Translating_an_external_workbench

As pointed in the title, this is most a question in case you that work in this cad-3d world know something to point me: is there an OSS render engine that works with Sketchup Pro?

Thanks in advance and congrats for the work you are doing in OSS and CAD.

Lionel

Something that would greatly improve render qualities in cycles is adding smooth to some objects.
IT would be interesting to do this manually of think of a way to do this automatically.
As far as I understand it can be done by adding this string to the mesh:
<state interpolation="smooth">
Got it from this topic:
https://lists.blender.org/pipermail/bf-cycles/2019-February/003413.html
did some testing with this:
No smooth diffuse:

With smooth diffuse:

Smooth glossy:

No smooth glossy:

If I see this in CAd renders, I think it should be on by default and maybe add an option to disable it.
current test code:
<shader name="Sphere"> <glossy_bsdf name="Sphere_bsdf" color="0.800000011920929, 0.800000011920929, 0.800000011920929"/> <connect from="Sphere_bsdf bsdf" to="output surface"/> </shader> <state interpolation="smooth" shader="Sphere"> <mesh P="1.2820419073104858 0.1762126088142395 -4.829628944396973 1.2940952777862549 -3.1696192585426613e-16 -4.829628944396973 3.0616169991140216e-16 -7.498798786105971e-32 -5.0 2.5 -6.123233998228043e-16 -4.330127239227295 1.1869587898254395 0.5155689716339111 -4.829628944396973 1.0038442611694336 0.8166878819465637 -4.829628944396973 0.746279239654541 1.0572367906570435 -4.829628944396973 2.4072933197021484 0.6744919419288635 -4.330127239227295 0.4333661198616028 1.2193753719329834 -4.829628944396973 2.1360485553741455 1.2989598512649536 -4.330127239227295 0.08831217885017395 1.2910784482955933 -4.829628944396973 1.7063828706741333 1.8270899057388306 -4.330127239227295 3.502603769302368 0.4814217984676361 -3.535533905029297 3.535533905029297 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252 242 245 252 249 242 253 163 250 253 243 246 253 250 243 254 252 245 254 245 248 255 246 249 255 163 253 255 253 246 256 251 116 256 248 251 256 254 248 257 163 255 257 249 252 257 255 249 258 252 254 258 257 252 258 163 257 259 254 256 259 163 258 259 258 254 260 116 162 260 162 163 260 256 116 260 163 259 260 259 256"/> </state>

I'm just trying to use LuxCoreRender to render something, but I only get an empty tab/window and this error:

20:40:19  Starting rendering...
/usr/bin/luxcoreui  -o "/tmp/Project9f6hx03i.cfg" -f "/tmp/Projectrvrxciri.scn"

20:40:20  LuxCoreUI v2.6 (LuxCore demo: http://www.luxcorerender.org)
20:40:20  [LuxCore][0.000] Configuration: 
20:40:20  [LuxCore][0.000]   renderengine.seed = "1"
20:40:20  [LuxCore][0.000]   film.width = "800"
20:40:20  [LuxCore][0.000]   film.height = "600"
20:40:20  [LuxCore][0.000]   film.imagepipelines.0.0.type = "TONEMAP_AUTOLINEAR"
20:40:20  [LuxCore][0.000]   film.imagepipelines.1.0.type = "TONEMAP_REINHARD02"
20:40:20  [LuxCore][0.000]   film.imagepipelines.2.0.type = "NOP"
20:40:20  [LuxCore][0.000]   film.outputs.0.type = "RGB_IMAGEPIPELINE"
20:40:20  [LuxCore][0.000]   film.outputs.0.filename = "/home/cf/.cache/FreeCAD/Cache/FreeCAD_Doc_1cad85c9-2fb2-4d12-9d89-1ff44a631a6d_d9ecc9_23101/Project8tu0ljsu.png"
20:40:20  [LuxCore][0.000]   film.outputs.0.index = "0"
20:40:20  [LuxCore][0.000]   periodicsave.film.outputs.period = "1"
20:40:20  [LuxCore][0.000]   scene.file = "/tmp/Projectrvrxciri.scn"
20:40:20  [LuxCore][0.000] File Name Resolver Configuration: 
20:40:20  [LuxCore][0.000]   .
20:40:20  [LuxCore][0.000]   /tmp
20:40:20  [SDL][0.000] Reading scene: /tmp/Projectrvrxciri.scn
20:40:20  [SDL][0.007] Define ImageMap: NamedObject
20:40:20  [SDL][0.007] Material definition: Body
20:40:20  [SDL][0.007] Camera type: perspective
20:40:20  [SDL][0.007] Camera position: Point[0.0794434, -0.0174682, 0.0859472]
20:40:20  [SDL][0.007] Camera target: Point[0.0788963, -0.0171177, 0.085187]
20:40:20  [SDL][0.007] Camera clipping plane disabled
20:40:20  [SDL][0.017] Scene objects count: 1
20:40:20  [SDL][0.017] Light definition: __BACKGROUND__
20:40:20  GLFW Error: 65544
20:40:20  Description: Wayland: Failed to connect to display
20:40:20  Exiting rendering - Return code: 1

I'm using the "...standard..." named configuration file and keep all default settings.

FreeCad version:

OS: Manjaro Linux (KDE/plasma)
Word size of FreeCAD: 64-bit
Version: 0.20.27507 (Git)
Build type: Release
Branch: master
Hash: d29bd2f8048f5975a732af3981dc1826e2fb0834
Python version: 3.10.2
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.3
Locale: English/United States (en_US)

This is the Arch/AUR package I installed to get LuxCoreRender: https://aur.archlinux.org/packages/luxcorerender

I don't really get why the issue is related to Wayland, since it's only supposed to render data not connect to any displays.
And yes, I have a display connected. :)

Any ideas?