main/src/georegression/struct/GeoTuple2D_F64.java
public T plus( GeoTuple2D_F64 a ) {
		T ret = createNewInstance();
		ret.x = x + a.x;
		ret.y = y + a.y;
		return ret;
	}
public T plus( GeoTuple2D_F64 a ) {
		T ret = createNewInstance();
		ret.x = x + a.x;
		ret.y = y + a.y;
		return ret;
	}
<p>Addition</p>

ret.x = this.x + a.x;

@param a value which is to be added