Method vectoangles

qcommon/src/main/java/jake2/qcommon/util/Math3D.java:140–170

(float[] value1, float[] angles)

		return yaw;
	}
	public static void vectoangles(float[] value1, float[] angles) {

		float yaw, pitch;

		if (value1[1] == 0 && value1[0] == 0) {
			yaw = 0;
			if (value1[2] > 0)
				pitch = 90;
			else
				pitch = 270;
		}
		else {
			if (value1[0] != 0)
				yaw = (int) (Math.atan2(value1[1], value1[0]) * 180 / Math.PI);
			else if (value1[1] > 0)
				yaw = 90;
			else
				yaw = -90;
			if (yaw < 0)
				yaw += 360;

			float forward = (float) Math.sqrt(value1[0] * value1[0] + value1[1] * value1[1]);
			pitch = (int) (Math.atan2(value1[2], forward) * 180 / Math.PI);
			if (pitch < 0)
				pitch += 360;
		}

		angles[Defines.PITCH] = -pitch;
		angles[Defines.YAW] = yaw;
		angles[Defines.ROLL] = 0;
	}
	private static float m[][] = new float[3][3];
	private static float im[][] = new float[3][3];
	private static float tmpmat[][] = new float[3][3];