From 5c70ba0441a1cbad58c6195d7e993114b0736e3a Mon Sep 17 00:00:00 2001
From: 06wj <06wj@163.com>
Date: Wed, 19 Sep 2018 11:10:02 +0800
Subject: [PATCH 1/2] fixed sprite raycast bug when sizeAttenuation is false

---
 examples/webgl_raycast_sprite.html | 23 ++++++++++++++++++++++-
 src/objects/Sprite.js              |  6 ++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/examples/webgl_raycast_sprite.html b/examples/webgl_raycast_sprite.html
index 9cc1a7936574ad..15988e313ccf29 100644
--- a/examples/webgl_raycast_sprite.html
+++ b/examples/webgl_raycast_sprite.html
@@ -87,6 +87,26 @@
 			sprite.material.rotation = Math.PI / 3;
 			group2.add( sprite );
 
+
+			var num = 20;
+			var radius = 10;
+			while(num --) {
+
+				var x = Math.random() - 0.5;
+				var y = Math.random() - 0.5;
+				var z = Math.random() - 0.5;
+
+				var sprite = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#96f' } ));
+				sprite.position.set( x, y, z );
+				sprite.position.normalize();
+				sprite.position.multiplyScalar( radius );
+				sprite.scale.set(0.05 * Math.random(), 0.05 * Math.random(), 0.05 * Math.random());
+				sprite.material.rotation = Math.random() * Math.PI * 2;
+				sprite.material.sizeAttenuation = false;
+				group.add( sprite );
+
+			}
+
 			window.addEventListener( 'resize', onWindowResize, false );
 			window.addEventListener( "mousemove", onDocumentMouseMove, false );
 
@@ -115,7 +135,7 @@
 			event.preventDefault();
 			if ( selectedObject ) {
 
-				selectedObject.material.color.set( '#69f' );
+				selectedObject.material.color.set( selectedObject.originColor );
 				selectedObject = null;
 
 			}
@@ -132,6 +152,7 @@
 				if ( res && res.object ) {
 
 					selectedObject = res.object;
+					selectedObject.originColor = selectedObject.material.color.getHex();
 					selectedObject.material.color.set( '#f00' );
 
 				}
diff --git a/src/objects/Sprite.js b/src/objects/Sprite.js
index e653fc1c464f1a..2b6405c618f822 100644
--- a/src/objects/Sprite.js
+++ b/src/objects/Sprite.js
@@ -104,6 +104,12 @@ Sprite.prototype = Object.assign( Object.create( Object3D.prototype ), {
 			viewWorldMatrix.getInverse( this.modelViewMatrix ).premultiply( this.matrixWorld );
 			mvPosition.setFromMatrixPosition( this.modelViewMatrix );
 
+			if ( ! this.material.sizeAttenuation ) {
+
+				worldScale.multiplyScalar( - mvPosition.z );
+
+			}
+
 			var rotation = this.material.rotation;
 			var sin, cos;
 			if ( rotation !== 0 ) {

From b95fb7905cda081613086df360a9256c4f12ef5e Mon Sep 17 00:00:00 2001
From: 06wj <06wj@163.com>
Date: Wed, 19 Sep 2018 12:33:12 +0800
Subject: [PATCH 2/2] update the sizeAttenuation check

---
 src/objects/Sprite.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/objects/Sprite.js b/src/objects/Sprite.js
index 2b6405c618f822..e0a629a8a77e89 100644
--- a/src/objects/Sprite.js
+++ b/src/objects/Sprite.js
@@ -104,7 +104,7 @@ Sprite.prototype = Object.assign( Object.create( Object3D.prototype ), {
 			viewWorldMatrix.getInverse( this.modelViewMatrix ).premultiply( this.matrixWorld );
 			mvPosition.setFromMatrixPosition( this.modelViewMatrix );
 
-			if ( ! this.material.sizeAttenuation ) {
+			if ( this.material.sizeAttenuation === false ) {
 
 				worldScale.multiplyScalar( - mvPosition.z );