lerp method
Implementation
Vector3 lerp(Vector3 v, num alpha) {
x += (v.x - x) * alpha;
y += (v.y - y) * alpha;
z += (v.z - z) * alpha;
return this;
}
Vector3 lerp(Vector3 v, num alpha) {
x += (v.x - x) * alpha;
y += (v.y - y) * alpha;
z += (v.z - z) * alpha;
return this;
}