playcanvas/build/playcanvas.prf/src/scene/gsplat-unified/gsplat-placement.js

Open-source WebGL/WebGPU 3D engine for the web

import { GSplatStreams } from "../gsplat/gsplat-streams.js";
import { WORKBUFFER_UPDATE_AUTO, WORKBUFFER_UPDATE_ALWAYS, WORKBUFFER_UPDATE_ONCE } from "../constants.js";
import { GsplatAllocId } from "./gsplat-alloc-id.js";
class GSplatPlacement {
	resource;
	node;
	intervals = /* @__PURE__ */ new Map();
	id = 0;
	allocId = GsplatAllocId.get();
	lodIndex = 0;
	_lodBaseDistance = 5;
	_lodMultiplier = 3;
	set lodBaseDistance(value) {
		if (this._lodBaseDistance !== value) {
			this._lodBaseDistance = value;
			this.lodDirty = true;
		}
	}
	get lodBaseDistance() {
		return this._lodBaseDistance;
	}
	set lodMultiplier(value) {
		if (this._lodMultiplier !== value) {
			this._lodMultiplier = value;
			this.lodDirty = true;
		}
	}
	get lodMultiplier() {
		return this._lodMultiplier;
	}
	_aabb = null;
	parameters = null;
	_streams = null;
	lodDirty = false;
	renderDirty = false;
	workBufferUpdate = WORKBUFFER_UPDATE_AUTO;
	_lastFormatVersion = -1;
	_workBufferModifier = null;
	parentPlacement = null;
	constructor(resource, node, lodIndex = 0, parameters = null, parentPlacement = null, id = null) {
		this.id = id ?? parentPlacement?.id ?? 0;
		this.resource = resource;
		this.node = node;
		this.lodIndex = lodIndex;
		this.parameters = parameters ?? parentPlacement?.parameters ?? null;
		this.parentPlacement = parentPlacement;
	}
	destroy() {
		this._streams?.destroy();
		this._streams = null;
		this.intervals.clear();
		this.resource = null;
	}
	set workBufferModifier(value) {
		this._workBufferModifier = value;
		this.renderDirty = true;
	}
	get workBufferModifier() {
		return this.parentPlacement?.workBufferModifier ?? this._workBufferModifier;
	}
	consumeRenderDirty() {
		const format = this.resource?.format;
		if (format && this._lastFormatVersion !== format.extraStreamsVersion) {
			this._lastFormatVersion = format.extraStreamsVersion;
			this.renderDirty = true;
		}
		if (this.workBufferUpdate === WORKBUFFER_UPDATE_ALWAYS) {
			this.renderDirty = true;
		} else if (this.workBufferUpdate === WORKBUFFER_UPDATE_ONCE) {
			this.renderDirty = true;
			this.workBufferUpdate = WORKBUFFER_UPDATE_AUTO;
		}
		const dirty = this.renderDirty;
		this.renderDirty = false;
		return dirty;
	}
	set aabb(aabb) {
		this._aabb = aabb?.clone() ?? null;
	}
	get aabb() {
		const aabb = this._aabb ?? this.resource?.aabb;
		return aabb;
	}
	getLodDistance(level) {
		return this.lodBaseDistance * Math.pow(this.lodMultiplier, level);
	}
	getInstanceTexture(name, device) {
		const resource = this.resource;
		if (!resource?.format) {
			return void 0;
		}
		if (!this._streams && resource.format.instanceStreams.length > 0) {
			this._streams = new GSplatStreams(device, true);
			this._streams.textureDimensions.copy(resource.streams.textureDimensions);
			this._streams.syncWithFormat(resource.format);
		}
		return this._streams?.getTexture(name);
	}
	get streams() {
		return this.parentPlacement?.streams ?? this._streams;
	}
	ensureInstanceStreams(device) {
		const resource = this.resource;
		if (!resource?.format) {
			return;
		}
		if (!this._streams && resource.format.instanceStreams.length > 0) {
			this._streams = new GSplatStreams(device, true);
			this._streams.textureDimensions.copy(resource.streams.textureDimensions);
			this._streams.syncWithFormat(resource.format);
		}
	}
}
export {
	GSplatPlacement
};