File size: 2,371 Bytes
8766bc5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | import type { FileData } from "@gradio/upload";
import * as BABYLON from "babylonjs";
const create_camera = (
scene: BABYLON.Scene,
camera_position: [number | null, number | null, number | null],
zoom_speed: number
): void => {
scene.createDefaultCamera(true, true, true);
var helperCamera = scene.activeCamera! as BABYLON.ArcRotateCamera;
if (camera_position[0] !== null) {
helperCamera.alpha = BABYLON.Tools.ToRadians(camera_position[0]);
}
if (camera_position[1] !== null) {
helperCamera.beta = BABYLON.Tools.ToRadians(camera_position[1]);
}
if (camera_position[2] !== null) {
helperCamera.radius = camera_position[2];
}
// Disable panning. Adapted from: https://playground.babylonjs.com/#4U6TVQ#3
helperCamera.panningSensibility = 0;
helperCamera.attachControl(false, false, -1);
helperCamera.pinchToPanMaxDistance = 0;
helperCamera.wheelPrecision = 2500 / zoom_speed;
};
export const add_new_model = (
canvas: HTMLCanvasElement,
scene: BABYLON.Scene,
engine: BABYLON.Engine,
value: FileData | null,
clear_color: [number, number, number, number],
camera_position: [number | null, number | null, number | null],
zoom_speed: number
): BABYLON.Scene => {
if (scene && !scene.isDisposed && engine) {
scene.dispose();
engine.dispose();
}
engine = new BABYLON.Engine(canvas, true);
scene = new BABYLON.Scene(engine);
scene.createDefaultCameraOrLight();
scene.clearColor = scene.clearColor = new BABYLON.Color4(...clear_color);
engine.runRenderLoop(() => {
scene.render();
});
window.addEventListener("resize", () => {
engine.resize();
});
if (!value) return scene;
let url: string;
if (value.is_file) {
url = value.data;
} else {
let base64_model_content = value.data;
let raw_content = BABYLON.Tools.DecodeBase64(base64_model_content);
let blob = new Blob([raw_content]);
url = URL.createObjectURL(blob);
}
BABYLON.SceneLoader.ShowLoadingScreen = false;
BABYLON.SceneLoader.Append(
url,
"",
scene,
() => create_camera(scene, camera_position, zoom_speed),
undefined,
undefined,
"." + value.name.split(".")[1]
);
return scene;
};
export const reset_camera_position = (
scene: BABYLON.Scene,
camera_position: [number | null, number | null, number | null],
zoom_speed: number
): void => {
scene.removeCamera(scene.activeCamera!);
create_camera(scene, camera_position, zoom_speed);
};
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