Rotation: Do not depend on non standard touch list ordering

grma1 · arschmitz · commit 287720a6e506 · 2015-08-07T21:57:28.000-04:00
Fixes #610 Fixes #791 Closes #696
diff --git a/src/input.js b/src/input.js
@@ -379,7 +379,7 @@ function getAngle(p1, p2, props) {
  * @return {Number} rotation
  */
 function getRotation(start, end) {
-    return getAngle(end[1], end[0], PROPS_CLIENT_XY) - getAngle(start[1], start[0], PROPS_CLIENT_XY);
+    return getAngle(end[1], end[0], PROPS_CLIENT_XY) + getAngle(start[1], start[0], PROPS_CLIENT_XY);
 }
 
 /**

Original file line number	Diff line number	Diff line change
`@@ -379,7 +379,7 @@ function getAngle(p1, p2, props) {`
`379`	`379`	`* @return {Number} rotation`
`380`	`380`	`*/`
`381`	`381`	`function getRotation(start, end) {`
`382`		`- return getAngle(end[1], end[0], PROPS_CLIENT_XY) - getAngle(start[1], start[0], PROPS_CLIENT_XY);`
	`382`	`+ return getAngle(end[1], end[0], PROPS_CLIENT_XY) + getAngle(start[1], start[0], PROPS_CLIENT_XY);`
`383`	`383`	`}`
`384`	`384`
`385`	`385`	`/**`