ViewCamera: No overload for method

[feklee]

I am following a video tutorial on how to control the camera from Grasshopper in order to create a fly-through animation: Control and Animate the Camera with 6 lines of code GH Python Rhino 7 - Beginners Tutorial - 002

Unfortunately, I get an error message when trying to set the camera. Here is a simplified example:

2025-06-05+02_no_overload.gh (6.8 KB)

How do I make that work in Rhino 8’s Grasshopper?

If there is an alternative way to control the camera, I should be fine with that too, as long as it doesn’t require plugins. The traditional non-Grasshopper way of doing fly-through animations fails for me. See my recent posts in the thread: Parts of Rhino Model Disappear During Flythrough Animation.

[Jakob_v_Schirmeister (Jakob von Schirmeister)]

cameraScriptManipulation_1.gh (11.6 KB)

[Jakob_v_Schirmeister (Jakob von Schirmeister)]

but it behaves strange…

[Jakob_v_Schirmeister (Jakob von Schirmeister)]

better.. sorry
cameraScriptManipulation_2.gh (12.7 KB)

[Joseph_Oster]

Works fine without it through, thanks.

Box 2Pt and Populate 3D are also needless distractions:

Haven’t watched the video yet but this looks promising.

[Jakob_v_Schirmeister (Jakob von Schirmeister)]

the needless distractions generate a chnaging point to test the script by changing the Seed.
the Scrip node does not need its outputs…

[feklee]

@Jakob_v_Schirmeister

cameraScriptManipulation_2.gh (12.7 KB)

Thank you, that pointed me in the right direction!

Here is what I have now:

2025-06-05+02_no_overload_fixed.gh (6.4 KB)

The conversion on line number 4 would not be necessary with a type hint in the input parameters. But I prefer to have it all in code for this example.

[Joseph_Oster]

@feklee

Here is what I have now:

But… when the slider is moved, the geometry quickly moves out of the “viewport”. I’m aware of this other “camera view” thread:

View camera direction in Grasshopper - change

Hello! Is it possible to change view direction for example from the top to the front without changing others parameters like X,Y,Z widht/depht through Grasshopper? [image]

But am still waiting for working code that moves a camera along an arbitrary curve while pointing at a target point? And then being able to smoothly change the target, of course.

P.S. I did some of this ~3 years ago using the Horster cameraControl plugin and a trial version of Bongo (US$ 995 to buy!), but would like to have a “simple” way to create fly-through animations.

Using Bongo with Grasshopper

I’ve been playing with Bongo but when I open Grasshopper, without opening a GH file, Rhino/Bongo becomes unresponsive to the point of being useless. Are R7 and Bongo 2 incompatible? P.S. Grasshopper also becomes unresponsive. Meaning there is a ten second delay when trying to do anything at all. P.P.S. I’m not trying to control Bongo from Grasshopper or work with GH geometry in Bongo. I’ve written a utility in GH that uses the Horster cameraControl plugin (‘Get camera’) …

Similar to this, done with Bongo but difficult, as I recall (and expensive to buy!).

21 meter Pacific proa fly-through (V4)

[feklee]

@Joseph_Oster

But am still waiting for working code that moves a camera along an arbitrary curve while pointing at a target point?

As explained in the video, you can even move the target point. Because I need that too, I just created a simple example whereby the camera location and the target are moved along two circles:

2025-06-05+02_with_target.gh (16.6 KB)

Python code:

import rhinoscriptsyntax as rs
import Rhino

location = rs.PointCoordinates(location)
target = rs.PointCoordinates(target)
viewport = Rhino.RhinoDoc.ActiveDoc.Views.ActiveView.ActiveViewport
viewport.SetCameraLocations(target, location)

[Joseph_Oster]

@feklee

you can even move the target point

Yes, thanks, that’s better. I changed the camera path and target to create this:

camera_path_2025Jun5a.gh (22.0 KB)

[feklee]

@Joseph_Oster

I changed the camera path and target to create this

Certainly a nicer path than in my example! By the way, when using type hints, then the code can be reduced to just two lines:

import Rhino
Rhino.RhinoDoc.ActiveDoc.Views.ActiveView.ActiveViewport.SetCameraLocations(target, location)

That’s a third of what is advertised in the aforementioned video. Not that it matters. Anyhow, animating with Grasshopper is fun. I can put off purchasing Bongo 2, which doesn’t have the best reputation.