Ensure camera settings only update when necessary in Model3D

[hannahblair]

Description

We were calling reset_camera_position whenever the component re-rendered. This isn't ideal if the value, nor camera settings of a scene have changed. However, we need to maintain this reactivity if any of those camera properties do change.

This PR checks if the old camera settings are different to the new camera settings before resetting the scene.

A test demo: (where we dynamically change the camera position, and also check that we maintain the camera settings when re-rendering)

import gradio as gr
import os
import trimesh
from PIL import Image
import numpy as np


def update_theta(theta, cam_position):
    cam = (theta, cam_position[1], None)
    model = gr.Model3D(label="Input 3D mesh", value=os.path.join(os.path.abspath(''), 
                            "./demo/model3D/files/Duck.glb") , camera_position=cam)
    return cam, model

def update_phi(phi, cam_position):
    cam = (cam_position[0], phi, None)
    model = gr.Model3D(label="Input 3D mesh", value=os.path.join(os.path.abspath(''), 
                            "./demo/model3D/files/Duck.glb") , camera_position=cam)
    return cam, model


with gr.Blocks() as demo:
    with gr.Row():
        model = gr.Model3D(label="Input 3D mesh", value=os.path.join(os.path.abspath(''), 
                                "./demo/model3D/files/Duck.glb") , camera_position=(0, 45, None))
        with gr.Column():     
            theta_slider = gr.Slider(0, 360, step=1, label="camera theta")
            phi_slider = gr.Slider(45, 90, step=1, label="camera phi")

        cam_position = gr.State(value = (0, 45, None))
        theta_slider.release(update_theta, inputs=[theta_slider, cam_position], outputs=[cam_position, model])
        phi_slider.release(update_phi, inputs=[phi_slider, cam_position], outputs=[cam_position, model])

    def update(name):
        return f"Welcome to Gradio, {name}!"

    file = os.path.join(os.path.abspath(''), "./demo/model3D/files/Duck.glb")

    with gr.Row():
        with gr.Column(scale=5):
            model_3d = gr.Model3D(
                value=file,
                clear_color=[0.0, 0.0, 0.0, 0.0],
                label="3D Model",
                )
    with gr.Row():
        inp = gr.Textbox(placeholder="What is your name?")
        out = gr.Textbox()
    btn = gr.Button("Run")
    btn.click(fn=update, inputs=[inp], outputs=[out], queue=False)

demo.launch()

Closes: #6859

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[gradio-pr-bot]

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---

Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/27b95ca8f4ac5d643907e910a5f5682379187208/gradio-4.12.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@27b95ca8f4ac5d643907e910a5f5682379187208#subdirectory=client/python"

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/model3d	patch
gradio	patch

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Ensure camera settings only update when necessary in Model3D

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[abidlabs]

Works great. Nice demo too!

[abidlabs]

I'll go ahead and merge this in so we can get it out for the release. Thanks @hannahblair