private boolean isPointInTriangle(Vector3f point, AbstractTriangle tri) {
        if (pointsOnSameSide(point, tri.get1(), tri.get2(), tri.get3())
                && pointsOnSameSide(point, tri.get2(), tri.get1(), tri.get3())
                && pointsOnSameSide(point, tri.get3(), tri.get1(), tri.get2())) {
            return true;
        }
        return false;
    }
No longer public.

@author Kirill Vainer
jme3-core/src/main/java/com/jme3/collision/SweepSphere.java