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    johntravolski

    @johntravolski

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    Best posts made by johntravolski

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    Latest posts made by johntravolski

    ZeroConf error: Couldn’t get bonjour version [sys_bonjour.cpp(1725)]

    Sometimes after my computer has been turned on long enough I am no longer able to open up C4D. It gets stuck on: "loading plugins" and when I run c4d with the argument "g_console=true" I get this output:

    Application start      : 06/06/22 at 13:43:12
    Executable             : 64 Bit
    Version / Build        : 19.068 / RB245443
    Debugger               : not available
    Memory model           : release
    Startup path           : file:///C:/PFxBOB/Cinema 4D R19
    Application path       : file:///C:/PFxBOB/Cinema 4D R19/CINEMA 4D.exe
    Application executable : file:///C:/PFxBOB/Cinema 4D R19/CINEMA 4D.exe
    Resource path          : file:///C:/PFxBOB/Cinema 4D R19/resource
    Module path(s)         : file:///C:/PFxBOB/Cinema 4D R19/corelibs
    Temporary path         : file:///C:/Users/BOB/AppData/Local/Temp
    Prefs path             : file:///C:/Users/BOB/AppData/Roaming/MAXON/Cinema 4D R19_2561E711
    Global Prefs path      : file:///C:/Users/BOB/AppData/Roaming/MAXON
    OS version             : Windows 10, 64 Bit, Unknown Edition (125) (build 14393)
    Processor              : 8(16)x Intel Core i7-5960X CPU
    Computer name          : BOB-MACHINE
    Thread Count           : 16
    Cpu Speed (MHz)        : 3010.000
    Application Type       : Modular
    Command line arguments : "g_console=true"
    
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/browser.xdl64 with module(s) net.maxon.c4d.browser
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/c4dplugin.xdl64 with module(s) net.maxon.c4dplugin net.maxon.c4d.c4dplugin
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/crashhandler.module.xdl64 with module(s) net.maxon.crashhandler
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/crypt.module.xdl64 with module(s) net.maxon.crypt
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/drawport.module.xdl64 with module(s) net.maxon.drawport
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/drawport_general.module.xdl64 with module(s) net.maxon.drawport_general
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/drawport_opengl.module.xdl64 with module(s) net.maxon.drawport_opengl
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/drawport_selector.module.xdl64 with module(s) net.maxon.drawport_selector
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/embree.module.xdl64 with module(s) net.maxon.embree
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/geom.module.xdl64 with module(s) net.maxon.geom
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/gui.module.xdl64 with module(s) net.maxon.gui
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/image.module.xdl64 with module(s) net.maxon.image
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/image_openexr.module.xdl64 with module(s) net.maxon.image_openexr
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/image_winmf.module.xdl64 with module(s) net.maxon.image_winmf
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/io_obj.xdl64 with module(s) net.maxon.c4d.io_obj
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/math.module.xdl64 with module(s) net.maxon.math
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/mesh.module.xdl64 with module(s) net.maxon.mesh
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/misc.module.xdl64 with module(s) net.maxon.misc
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/mkmodeler.xdl64 with module(s) net.maxon.c4d.mkmodeler
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/network.module.xdl64 with module(s) net.maxon.network
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/opencl.module.xdl64 with module(s) net.maxon.opencl
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/opensubdiv.module.xdl64 with module(s) net.maxon.opensubdiv
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/render.module.xdl64 with module(s) net.maxon.render
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/shaderbase.module.xdl64 with module(s) net.maxon.shaderbase
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/tessellation.module.xdl64 with module(s) net.maxon.tessellation
    Loading file:///C:/PFxBOB/Cinema 4D R19/corelibs/xtensions.xdl64 with module(s) net.maxon.c4d.xtensions
    
    OpenGL root context initialized
        Vendor        : NVIDIA Corporation (NVIDIA)
        Renderer      : GeForce GTX 970/PCIe/SSE2
        OpenGL version: 4.6.0 NVIDIA 457.09
        Driver version: 457.09
    OpenGL root context initialized
        Vendor        : VMware, Inc. (VMWARE)
        Renderer      : Gallium 0.4 on llvmpipe (LLVM 4.0, 256 bits)
        OpenGL version: 3.3 (Core Profile) Mesa 17.0.1 (git-)
        Driver version: 17.0.1 (git-)
    ZeroConf error: Couldn't get bonjour version [sys_bonjour.cpp(1725)]
    

    Any idea on how to fix this without restarting the computer? It usually works after restarting. I'm not sure if it's related to a specific plugin given where it's getting stuck, but I'm not sure. Any ideas on how to debug this?

    posted in General Talk •
    Commandline.exe not loading lib4d preset materials

    I’m trying to render an animation from the commandline but it fails because an “asset is missing”. What’s interesting is that the asset in reference is from the “Studio.lib4d” file located in the “library/browser” subfolder of the Cinema 4D R19 installation directory. I used a material from that preset library in the animation, but it renders fine in the GUI version of C4D, so I don’t understand why it is missing from the commandline version. Here’s my example command:

    &"C:\PFxPK2\Cinema 4D R19\Commandline.exe" -render "\\networkdrive\myfolder\heart.c4d"
    

    and here’s the output:

    63b2c4a1-0c9c-41a5-aa6f-1bacd44a5d94-image.png

    How do I get the commandline version of C4D to recognize the .lib4d library files in the library/browser folder?

    posted in General Talk •
    RE: Python Script to Export multiple GLTF files (glTF Exporter Unexpected Error)

    @m_magalhaes This worked great, thank you.

    posted in Cinema 4D SDK •
    Python Script to Export multiple GLTF files (glTF Exporter Unexpected Error)

    I want to change the value of a parameter and then export a .gltf file in C4D R23, and do this over and over again for many values. I'm trying to do it with this code, but it is not working:

    import c4d
    from c4d import documents, plugins
    import c4d.documents as docs
    
    def main():
        for ii in range(882):
            obj = doc.SearchObject("Selector")
            obj[c4d.ID_USERDATA,1] = ii
            docs.SaveDocument(c4d.documents.GetActiveDocument(), f'out{ii}.gltf', c4d.SAVEDOCUMENTFLAGS_DONTADDTORECENTLIST, format=c4d.FORMAT_GLTFEXPORT)
            c4d.EventAdd()
    
    
    
    if __name__=='__main__':
        main()
    

    Unfortunately, I get this error:

    5105c8fa-243c-4625-9dae-c284ec0eae98-image.png

    How do I fix this? I think I need to specify the gltf export settings somehow, but I don't know how to do this.

    posted in Cinema 4D SDK •
    RE: Cubic Spline Looks Jagged

    @ferdinand Thank you, your example worked great. Now I understand how to use those symbols. Lowering the the degrees from 5 to 1 solved the issue. Thanks!

    Example for anyone curious:

    spline = c4d.SplineObject(total_points, c4d.SPLINETYPE_CUBIC)
        
        spline[c4d.SPLINEOBJECT_INTERPOLATION] = c4d.SPLINEOBJECT_INTERPOLATION_ADAPTIVE
        spline[c4d.SPLINEOBJECT_ANGLE] = c4d.utils.DegToRad(1.)
    
    posted in General Talk •
    RE: Cubic Spline Looks Jagged

    Basically, what I'm looking to do is increase the number of intermediate points. It seems like the default is to use "Adaptive" with an angle of 5 degrees. However, I would prefer for it to be lower (such as one degree), but I don't see any documentation on the SplineObject page on how to do this with the Python generator. Any ideas?

    I found this page here, but I don't understand how to use that with the SplineObject.

    posted in General Talk •
    Cubic Spline Looks Jagged

    I am using a Python generator to create a spline, and I set the interpolation to cubic. However, when the points of the spline are spread out enough, even with the cubic interpolation, it looks more like piecewise linear when getting closer. To it. Look at this video showing what I'm observing:

    https://www.youtube.com/watch?v=_rNVelCUdxE

    As you can see, it is certainly smoother than when I set the interpolation to linear, but even when it is cubic, when I zoom in enough, it still looks somewhat jagged, enough to be noticeable. At the end of the video I circle the cursor around the joints on the cubic spline.

    Is there some way I can make the cubic interpolation smoother? I would prefer that the cubic interpolation splines doesn't look like a bunch of connected straight line segments.

    posted in General Talk •
    RE: Color Surface with Python Generator

    @ferdinand Your flat UV projection solution worked great! Although I had to change the y to z and subtract the z range mappings from 1 in order to get it to work correctly. I will include a download in case anybody wants to see the details.

    Now I just have a few more questions:

    1. When in the viewport, the Python "complexShader" plugin I provided code for above just renders as black (see the right two of this image):

    alt text

    But it works when I render it:

    alt text

    Is there any way to get the Python shader to work in the viewport (not be completely black)? Or is it just too slow for that?

    1. The Python shader is very slow to render. If I were to write the shader in C++ and compile it, would you expect a significant speedup? The code would be nearly identical to what I have in the Python "complexShader" code I presented above, but C++ obviously and instead of using Python's "cmath" module I would be using C++'s "std::complex". Would this render noticeably quicker than doing it in Python?

    2. If I wrote a plugin in C++ to generate the geometry instead of doing it in Python, would you expect a significant speedup? I'm thinking so just because, from personal experience, I know nested for loops in Python are quite slow. The code I have written above slows down fast as the "resolution" variable increases. But I'm curious to hear your thoughts.

    posted in Cinema 4D SDK •
    RE: Color Surface with Python Generator

    @m_magalhaes

    It seems like there must be more to it or I'm doing something wrong. I added the following right above the return node line of code in the Python generator:

    uvwTag = node.MakeVariableTag(c4d.Tuvw, poly_count)
    c4d.EventAdd()
    for ii in range(poly_count):
        q = ii/poly_count
        uvwTag.SetSlow(ii, c4d.Vector(q,q,0), c4d.Vector(q,q,0), c4d.Vector(q,q,0), c4d.Vector(q,q,0))
    

    But I'm still getting the red error color. I also have the Python plugin print "hi" when it errors, and it is printing "hi". I haven't done the math to correctly set the values for the UV coordinates yet (that "q" number is just a placeholder/test to see if it errors, and it does).

    Regardless of what I set the UVW coordinates to be at each point, I shouldn't be getting the error color. So do you know what I'm missing?

    posted in Cinema 4D SDK •
    RE: Color Surface with Python Generator

    @m_magalhaes Thank you, that Python fresnel example was extremely helpful. I got very close with the following:

    import os
    import math
    import cmath
    
    import c4d
    from c4d import plugins, bitmaps, utils
    
    #warning Please obtain your own plugin ID from http://www.plugincafe.com # I didn't
    PLUGIN_ID=1027090
    
    class complexShader(plugins.ShaderData):
        
        def __init__(self):
            #if a Python exception occurs during the calculation of a pixel colorize this one in red for debugging purposes
            self.SetExceptionColor(c4d.Vector(1,0,0))
        
        def Output(self, sh, cd):
            if cd.vd: #if shader is computated in 3d space
                pi = math.pi
                
                u = cd.p[0]
                v = cd.p[1]
                tt = cd.t # /28.0
                osc = math.sin(2*pi*tt)
                
                min_y = -2*pi
                max_y = 2*pi
                min_x = -2*pi
                max_x = 2*pi
                
                # to view correctly when applied to a plane in c4d, have x axis pointing right, z axis pointing up, and y axis pointing at the camera
                x = c4d.utils.RangeMap(u, 0, 1, min_x, max_x, clampval = True)
                y = c4d.utils.RangeMap(1-v, 0, 1, min_y, max_y, clampval = True)
                z = x + y*1j
                
                out = cmath.exp(z)
                
                angle = cmath.phase(out)/pi % 2.0 # wrap it at pi to match Mathematica's color mapping (mathematica: -pi = cyan, 0 = red, pi = cyan)
                hue = c4d.utils.RangeMap(angle, 0.0, 2.0, 0, 1, clampval = True)
                colorHSV = c4d.Vector(hue, 1.0, 1.0)
                colorRGB = c4d.utils.HSVToRGB(colorHSV)
                
                return c4d.Vector(colorRGB[0],colorRGB[1],colorRGB[2])
            else: #if shader is computated in 2d space
                return c4d.Vector(0.0)
        
        def FreeRender(self, sh):
            #Free any resources used for the precalculated data from InitRender().
            return
    
    def RegisterComplexShader():
        IDS_COMPLEX_SHADER=10001 #string resource, must be manually defined
        return plugins.RegisterShaderPlugin(PLUGIN_ID, plugins.GeLoadString(IDS_COMPLEX_SHADER), 0, complexShader, "", 0)
    
    if __name__=='__main__':
        RegisterComplexShader()
    

    This works on a plane. However, when I apply the same material to the Python generator, it returns the error color (red):

    e18b027a-24e3-4caf-b898-14dc006daa72-image.png

    I'm assuming this is because the geometry generated in the Python generator doesn't have UVs. Is that correct? If so, what is the proper way to add them? If not, why does it work on the plane but not the Python generator (which contains the same code as my first post).

    Here's the sample .c4d file and the .pyp plugin in case anybody wants to test it for themselves. I was testing this on R19:
    https://drive.google.com/file/d/1UJAsaYsEdKJKwafTau8-LDkLETSzgRNW/view?usp=sharing

    posted in Cinema 4D SDK •