From f69d136f061712dc6d983e97d28325610282db78 Mon Sep 17 00:00:00 2001
From: djmisterjon <24865815+djmisterjon@users.noreply.github.com>
Date: Sat, 22 Jun 2019 09:33:29 -0400
Subject: [PATCH 1/3] ObservableEuler enumerability

cb,scope not enumerable for json
---
 src/proj3d/ObservableEuler.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/proj3d/ObservableEuler.ts b/src/proj3d/ObservableEuler.ts
index fb51ec9..6642498 100644
--- a/src/proj3d/ObservableEuler.ts
+++ b/src/proj3d/ObservableEuler.ts
@@ -11,6 +11,8 @@ namespace pixi_projection {
 
 	export class ObservableEuler implements PIXI.PointLike, Euler {
 		constructor(public cb: any, public scope: any, x?: number, y?: number, z?: number) {
+			Object.defineProperty(this, cb   , { enumerable: false });
+			Object.defineProperty(this, scope, { enumerable: false });
 			/**
 			 * @member {number}
 			 * @default 0

From 23e0ef81f90dc69dcdb1a664b10258b781d368bf Mon Sep 17 00:00:00 2001
From: djmisterjon <24865815+djmisterjon@users.noreply.github.com>
Date: Fri, 2 Aug 2019 19:15:35 -0400
Subject: [PATCH 2/3] add more math tool

compute distance between 2 3d obj
---
 src/utils.ts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/utils.ts b/src/utils.ts
index 7e80779..dcf3fbf 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -25,6 +25,19 @@ namespace pixi_projection.utils {
 		return !(v & (v - 1)) && (!!v);
 	}
 
+	 /** get distance between 2 3d obj */
+	export function getDistanceFrom(t1: Container3d,t2:Container3d): {a:number,d:number} {
+		const p1 = t1.position3d;
+        const p2 = t2.position3d;
+        const deltaX = p1.x - p2.x;
+        const deltaY = p1.y - p2.y;
+        const deltaZ = p1.z - p2.z;
+        return {
+            d:Math.sqrt( deltaX * deltaX + deltaY * deltaY + deltaZ * deltaZ ),
+            a:-Math.atan2(p2.z - p1.z, p2.x - p1.x),
+        }
+	}
+
 	export function nextPow2(v: number): number {
 		v += +(v === 0);
 		--v;

From 749241f5c6c6bf2f64c5c4fe192248d53e0ec328 Mon Sep 17 00:00:00 2001
From: djmisterjon <24865815+djmisterjon@users.noreply.github.com>
Date: Fri, 2 Aug 2019 19:17:23 -0400
Subject: [PATCH 3/3] Revert "ObservableEuler enumerability"

This reverts commit f69d136f061712dc6d983e97d28325610282db78.
---
 src/proj3d/ObservableEuler.ts | 2 --
 1 file changed, 2 deletions(-)

diff --git a/src/proj3d/ObservableEuler.ts b/src/proj3d/ObservableEuler.ts
index 6642498..fb51ec9 100644
--- a/src/proj3d/ObservableEuler.ts
+++ b/src/proj3d/ObservableEuler.ts
@@ -11,8 +11,6 @@ namespace pixi_projection {
 
 	export class ObservableEuler implements PIXI.PointLike, Euler {
 		constructor(public cb: any, public scope: any, x?: number, y?: number, z?: number) {
-			Object.defineProperty(this, cb   , { enumerable: false });
-			Object.defineProperty(this, scope, { enumerable: false });
 			/**
 			 * @member {number}
 			 * @default 0