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<script lang="ts">
import { createEventDispatcher, tick, onMount } from "svelte";
import { Upload, ModifyUpload } from "@gradio/upload";
import type { FileData } from "@gradio/client";
import { BlockLabel } from "@gradio/atoms";
import { File } from "@gradio/icons";
import { add_new_model, reset_camera_position } from "./utils";
export let value: null | FileData;
export let clear_color: [number, number, number, number] = [0, 0, 0, 0];
export let label = "";
export let show_label: boolean;
export let root: string;
export let i18n: I18nFormatter;
export let zoom_speed = 1;
export let pan_speed = 1;
// alpha, beta, radius
export let camera_position: [number | null, number | null, number | null] = [
null,
null,
null
];
let mounted = false;
let canvas: HTMLCanvasElement;
let scene: BABYLON.Scene;
let engine: BABYLON.Engine;
function reset_scene(): void {
scene = add_new_model(
canvas,
scene,
engine,
value,
clear_color,
camera_position,
zoom_speed,
pan_speed
);
}
onMount(() => {
if (value != null) {
reset_scene();
}
mounted = true;
});
$: ({ path } = value || {
path: undefined
});
$: canvas && mounted && path != null && reset_scene();
async function handle_upload({
detail
}: CustomEvent<FileData>): Promise<void> {
value = detail;
await tick();
reset_scene();
dispatch("change", value);
dispatch("load", value);
}
async function handle_clear(): Promise<void> {
if (scene && engine) {
scene.dispose();
engine.dispose();
}
value = null;
await tick();
dispatch("clear");
dispatch("change");
}
async function handle_undo(): Promise<void> {
reset_camera_position(scene, camera_position, zoom_speed, pan_speed);
}
const dispatch = createEventDispatcher<{
change: FileData | null;
clear: undefined;
drag: boolean;
load: FileData;
}>();
let dragging = false;
import * as BABYLON from "babylonjs";
import * as BABYLON_LOADERS from "babylonjs-loaders";
import type { I18nFormatter } from "@gradio/utils";
$: {
if (
BABYLON_LOADERS.OBJFileLoader != undefined &&
!BABYLON_LOADERS.OBJFileLoader.IMPORT_VERTEX_COLORS
) {
BABYLON_LOADERS.OBJFileLoader.IMPORT_VERTEX_COLORS = true;
}
}
$: dispatch("drag", dragging);
</script>
<BlockLabel {show_label} Icon={File} label={label || "3D Model"} />
{#if value === null}
<Upload
on:load={handle_upload}
{root}
filetype={[".stl", ".obj", ".gltf", ".glb", "model/obj"]}
bind:dragging
>
<slot />
</Upload>
{:else}
<div class="input-model">
<ModifyUpload
undoable
on:clear={handle_clear}
{i18n}
on:undo={handle_undo}
absolute
/>
<canvas bind:this={canvas} />
</div>
{/if}
<style>
.input-model {
display: flex;
position: relative;
justify-content: center;
align-items: center;
width: var(--size-full);
height: var(--size-full);
}
canvas {
width: var(--size-full);
height: var(--size-full);
object-fit: contain;
overflow: hidden;
}
</style>
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