From e6e4cc0402b01047845c5a5756ada820fa7b0af3 Mon Sep 17 00:00:00 2001
From: Val Erastov <xibyte@gmail.com>
Date: Thu, 27 Sep 2018 23:16:17 -0700
Subject: [PATCH] taking into account coordinate system direction for surface
 inverting

---
 web/app/math/bbox.js    |  4 ++++
 web/app/math/l3space.js | 15 +++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/web/app/math/bbox.js b/web/app/math/bbox.js
index c3979066..6dba8be7 100644
--- a/web/app/math/bbox.js
+++ b/web/app/math/bbox.js
@@ -25,6 +25,10 @@ export default class BBox {
     this.checkBounds(p.x, p.y, p.z);
   }
 
+  checkData([x, y, z]) {
+    this.checkBounds(x, y, z);
+  }
+
   center() {
     return new Vector(this.minX + (this.maxX - this.minX) / 2, 
                       this.minY + (this.maxY - this.minY) / 2,
diff --git a/web/app/math/l3space.js b/web/app/math/l3space.js
index 859fa5ea..037684f1 100644
--- a/web/app/math/l3space.js
+++ b/web/app/math/l3space.js
@@ -190,6 +190,21 @@ Matrix3.prototype.__apply = function(vector, out) {
   return out;
 };
 
+Matrix3.prototype.apply3 = function(data) {
+  return this.__apply3(data, [])
+};
+
+Matrix3.prototype._apply3 = function(data) {
+  return this.__apply3(data, data);
+};
+
+Matrix3.prototype.__apply3 = function([x, y, z], out) {
+  out[0] = this.mxx * x + this.mxy * y + this.mxz * z + this.tx;
+  out[1] = this.myx * x + this.myy * y + this.myz * z + this.ty; 
+  out[2] = this.mzx * x + this.mzy * y + this.mzz * z + this.tz;
+  return out;
+};
+
 Matrix3.rotateMatrix = function(angle, axis, pivot) {
   var sin = Math.sin(angle);
   var cos = Math.cos(angle);