ViewHelper: Simplified and prettified. (#28312)

Author: mrdoob

examples/jsm/helpers/ViewHelper.js

@@ -1,5 +1,5 @@
 import {
-	BoxGeometry,
+	CylinderGeometry,
 	CanvasTexture,
 	Color,
 	Euler,
@@ -11,6 +11,7 @@ import {
 	Raycaster,
 	Sprite,
 	SpriteMaterial,
+	SRGBColorSpace,
 	Vector2,
 	Vector3,
 	Vector4
@@ -27,9 +28,10 @@ class ViewHelper extends Object3D {
 		this.animating = false;
 		this.center = new Vector3();
 
-		const color1 = new Color( '#ff3653' );
-		const color2 = new Color( '#8adb00' );
-		const color3 = new Color( '#2c8fff' );
+		const color1 = new Color( '#ff4466' );
+		const color2 = new Color( '#88ff44' );
+		const color3 = new Color( '#4488ff' );
+		const color4 = new Color( '#000000' );
 
 		const interactiveObjects = [];
 		const raycaster = new Raycaster();
@@ -39,7 +41,7 @@ class ViewHelper extends Object3D {
 		const orthoCamera = new OrthographicCamera( - 2, 2, 2, - 2, 0, 4 );
 		orthoCamera.position.set( 0, 0, 2 );
 
-		const geometry = new BoxGeometry( 0.8, 0.05, 0.05 ).translate( 0.4, 0, 0 );
+		const geometry = new CylinderGeometry( 0.04, 0.04, 0.8, 5 ).rotateZ( - Math.PI / 2 ).translate( 0.4, 0, 0 );
 
 		const xAxis = new Mesh( geometry, getAxisMaterial( color1 ) );
 		const yAxis = new Mesh( geometry, getAxisMaterial( color2 ) );
@@ -52,28 +54,35 @@ class ViewHelper extends Object3D {
 		this.add( zAxis );
 		this.add( yAxis );
 
-		const posXAxisHelper = new Sprite( getSpriteMaterial( color1, 'X' ) );
-		posXAxisHelper.userData.type = 'posX';
-		const posYAxisHelper = new Sprite( getSpriteMaterial( color2, 'Y' ) );
-		posYAxisHelper.userData.type = 'posY';
-		const posZAxisHelper = new Sprite( getSpriteMaterial( color3, 'Z' ) );
-		posZAxisHelper.userData.type = 'posZ';
-		const negXAxisHelper = new Sprite( getSpriteMaterial( color1 ) );
-		negXAxisHelper.userData.type = 'negX';
-		const negYAxisHelper = new Sprite( getSpriteMaterial( color2 ) );
-		negYAxisHelper.userData.type = 'negY';
-		const negZAxisHelper = new Sprite( getSpriteMaterial( color3 ) );
-		negZAxisHelper.userData.type = 'negZ';
+		const spriteMaterial1 = getSpriteMaterial( color1 );
+		const spriteMaterial2 = getSpriteMaterial( color2 );
+		const spriteMaterial3 = getSpriteMaterial( color3 );
+		const spriteMaterial4 = getSpriteMaterial( color4 );
+
+		const posXAxisHelper = new Sprite( spriteMaterial1 );
+		const posYAxisHelper = new Sprite( spriteMaterial2 );
+		const posZAxisHelper = new Sprite( spriteMaterial3 );
+		const negXAxisHelper = new Sprite( spriteMaterial4 );
+		const negYAxisHelper = new Sprite( spriteMaterial4 );
+		const negZAxisHelper = new Sprite( spriteMaterial4 );
 
 		posXAxisHelper.position.x = 1;
 		posYAxisHelper.position.y = 1;
 		posZAxisHelper.position.z = 1;
 		negXAxisHelper.position.x = - 1;
-		negXAxisHelper.scale.setScalar( 0.8 );
 		negYAxisHelper.position.y = - 1;
-		negYAxisHelper.scale.setScalar( 0.8 );
 		negZAxisHelper.position.z = - 1;
-		negZAxisHelper.scale.setScalar( 0.8 );
+
+		negXAxisHelper.material.opacity = 0.2;
+		negYAxisHelper.material.opacity = 0.2;
+		negZAxisHelper.material.opacity = 0.2;
+
+		posXAxisHelper.userData.type = 'posX';
+		posYAxisHelper.userData.type = 'posY';
+		posZAxisHelper.userData.type = 'posZ';
+		negXAxisHelper.userData.type = 'negX';
+		negYAxisHelper.userData.type = 'negY';
+		negZAxisHelper.userData.type = 'negZ';
 
 		this.add( posXAxisHelper );
 		this.add( posYAxisHelper );
@@ -101,42 +110,6 @@ class ViewHelper extends Object3D {
 			point.set( 0, 0, 1 );
 			point.applyQuaternion( camera.quaternion );
 
-			if ( point.x >= 0 ) {
-
-				posXAxisHelper.material.opacity = 1;
-				negXAxisHelper.material.opacity = 0.5;
-
-			} else {
-
-				posXAxisHelper.material.opacity = 0.5;
-				negXAxisHelper.material.opacity = 1;
-
-			}
-
-			if ( point.y >= 0 ) {
-
-				posYAxisHelper.material.opacity = 1;
-				negYAxisHelper.material.opacity = 0.5;
-
-			} else {
-
-				posYAxisHelper.material.opacity = 0.5;
-				negYAxisHelper.material.opacity = 1;
-
-			}
-
-			if ( point.z >= 0 ) {
-
-				posZAxisHelper.material.opacity = 1;
-				negZAxisHelper.material.opacity = 0.5;
-
-			} else {
-
-				posZAxisHelper.material.opacity = 0.5;
-				negZAxisHelper.material.opacity = 1;
-
-			}
-
 			//
 
 			const x = domElement.offsetWidth - dim;
@@ -298,29 +271,21 @@ class ViewHelper extends Object3D {
 
 		}
 
-		function getSpriteMaterial( color, text = null ) {
+		function getSpriteMaterial( color ) {
 
 			const canvas = document.createElement( 'canvas' );
 			canvas.width = 64;
 			canvas.height = 64;
 
 			const context = canvas.getContext( '2d' );
 			context.beginPath();
-			context.arc( 32, 32, 16, 0, 2 * Math.PI );
+			context.arc( 32, 32, 14, 0, 2 * Math.PI );
 			context.closePath();
 			context.fillStyle = color.getStyle();
 			context.fill();
 
-			if ( text !== null ) {
-
-				context.font = '24px Arial';
-				context.textAlign = 'center';
-				context.fillStyle = '#000000';
-				context.fillText( text, 32, 41 );
-
-			}
-
 			const texture = new CanvasTexture( canvas );
+			texture.colorSpace = SRGBColorSpace;
 
 			return new SpriteMaterial( { map: texture, toneMapped: false } );