添加关照、全局等高线、修改图层问题

dist/electron/static/sdk/three/jsm/webxr/Text2D.js

@@ -0,0 +1,38 @@
+import * as THREE from 'three';
+
+function createText( message, height ) {
+
+	const canvas = document.createElement( 'canvas' );
+	const context = canvas.getContext( '2d' );
+	let metrics = null;
+	const textHeight = 100;
+	context.font = 'normal ' + textHeight + 'px Arial';
+	metrics = context.measureText( message );
+	const textWidth = metrics.width;
+	canvas.width = textWidth;
+	canvas.height = textHeight;
+	context.font = 'normal ' + textHeight + 'px Arial';
+	context.textAlign = 'center';
+	context.textBaseline = 'middle';
+	context.fillStyle = '#ffffff';
+	context.fillText( message, textWidth / 2, textHeight / 2 );
+
+	const texture = new THREE.Texture( canvas );
+	texture.needsUpdate = true;
+
+	const material = new THREE.MeshBasicMaterial( {
+		color: 0xffffff,
+		side: THREE.DoubleSide,
+		map: texture,
+		transparent: true,
+	} );
+	const geometry = new THREE.PlaneGeometry(
+		( height * textWidth ) / textHeight,
+		height
+	);
+	const plane = new THREE.Mesh( geometry, material );
+	return plane;
+
+}
+
+export { createText };