DrawHUDText issue with viewport camera navigation

FlavioDiniz

Hi!

I made an script back in C4D 2023 to draw some information on the viewport (filename, camera lens, frame number, etc). It was working perfectly in C4D 2023, but in 2024 it is glitching the viewport camera navigation.

It's like the drawn text is in front of everything and when you click to orbit the camera, you click on the drawn text instead of the object.

Let me try to explain with some GIFs.
2023: I click on the corner of the cube to orbit the camera around it and it works.

2024: I click on the corner of the cube to orbit the camera and the orbit pivot insn't on the cube, but on the center of the screen.
Cinema_4D_HsHckRZN05.mp4_1024px_24fps.gif

It's not about the navigation mode, I already made sure I'm on the "mouse" mode.

When I delete the script on 2024, everything goes back to the normal, so I know the problem is the script.

and here it is, it's on a python tag:

# Playblast Overlay by Flavio Diniz
import c4d

def main() -> None:
    pass

def draw(bd: c4d.BaseDraw) -> bool:
    bd = doc.GetActiveBaseDraw()

    frame = bd.GetFrame()
    right = frame["cr"]
    bottom = frame["cb"]

    camera = "Camera: "+ bd.GetSceneCamera(doc).GetName()
    filename =  doc[c4d.DOCUMENT_FILEPATH].split("\\",-1)[-1]
    focal = str(bd.GetSceneCamera(doc)[c4d.RSCAMERAOBJECT_FOCAL_LENGTH]) +" mm"
    frame = "Frame: "+ str(doc[c4d.DOCUMENT_TIME].GetFrame(doc.GetFps()))

    bd.DrawHUDText(int(right /2)-300, int(bottom)-20, "{0}   |   {1} - {2}   |   {3}".format(filename, camera, focal, frame))

    return c4d.DRAWRESULT_OK

Does anyone have any idea of what could be happening ?
Thanks!

Flavio Diniz

i_mazlov

Hi Flavio,

Thanks for reaching out to us. Please excuse the delay.

I've created a ticket in our internal bug tracking system for this issue.

Cheers,
Ilia

FlavioDiniz

I think it must be a bug ! and I'm surprised I haven't heard anyone talking about this so far, since the "DrawHUDText" is so common for people to use
I also noticed the same problem happening with "DrawMultipleHUDText".

Thanks!
Flavio Diniz

i_mazlov

Hi Flavio Diniz,

The ticket has been fixed and closed. The C4D side fix is present at least in Cinema 4D 2025.2.0.

Let me also share the developer's comment from the ticket:

2 things are broken: C4D and the python tag. Once C4D is fixed, try again after changing the code in the python tag:

import c4d
def main() -> None:
    pass
def draw(bd: c4d.BaseDraw) -> bool:
    if bd.GetDrawPass() != c4d.DRAWPASS_OBJECT or bd.GetDrawParam(c4d.BASEDRAW_IS_PICK_OBJECT):
        return True

    frame = bd.GetFrame()
    right = frame["cr"]
    bottom = frame["cb"]
    bd.DrawHUDText(int(right / 2) - 100, int(bottom) - 20, "Hello World!")
    return True

The important thing is to draw only in the drawpasses in which it makes sense to draw.

Cheers,
Ilia

FlavioDiniz

Thanks a lot @i_mazlov !
The issue is solved !