Fixed Triangulation false warning. Fixes #3564

The false warning occurred when a vertex was on an edge of a triangle. The snip function should then return false, as there is a vertex inside the triangle, but this was not detected because of rounding errors. The use of EPSILON instead of 0.0 fixes this

src/extras/FontUtils.js

@@ -439,7 +439,7 @@ THREE.FontUtils.generateShapes = function( text, parameters ) {
 			cCROSSap = cX*apy - cY*apx;
 			bCROSScp = bX*cpy - bY*cpx;
 
-			if ( (aCROSSbp >= 0.0) && (bCROSScp >= 0.0) && (cCROSSap >= 0.0) ) return false;
+			if ( (aCROSSbp >= -EPSILON) && (bCROSScp >= -EPSILON) && (cCROSSap >= -EPSILON) ) return false;
 
 		}