src/Matter/World.js
function containsNormal(normal, normals) {
	let n;
	
	for (n = 0; n < normals.length; n++) {
		if (!normals[n].ignore && Vector.dot(normal, normals[n]) === 1) {
			return true;
		}
	}
	
	return false;
}
function containsNormal(normal, normals) {
	let n;
	
	for (n = 0; n < normals.length; n++) {
		if (!normals[n].ignore && Vector.dot(normal, normals[n]) === 1) {
			return true;
		}
	}
	
	return false;
}
function containsNormal ( normal , normals ) { let n ; for ( n = 0 ; n < normals . length ; n ++ ) { if ( ! normals [ n ] . ignore && Vector . dot ( normal , normals [ n ] ) === 1 ) { return true ; } } return false ; }
Determine whether a normal is contained in a set of normals.

Skips over ignored normals.

@param {Object} normal    - The normal to look for.
@param {Object[]} normals - The normals to search.
@return {boolean} Whether the normal is in the list of normals.
Determine whether a normal is contained in a set of normals .