Hi everybody.  I am wondering if there is a easy way or method to get the ForgeDirection that a Vec3 (or any other type of 3D vector) is pointing?  I am trying to make a block that blends in to it's souroundings, if it makes any difference.  Thank you in advance.

Hi

 

I don't know of a  vanilla function for this but it is easy enough to do yourself.

 

Find which of the three components [x, y, z] have the largest absolute magnitude.  The vector is pointing mostly in that direction.

 

eg [0.5, -0.6, 0.9] is pointing mostly in the positive z direction

[0, -0.7, 0.3] is pointing mostly in the negative y direction

 

-TGG

Thanks, but I think I can make a exact way.  If you can get the ForgeDirection an Entity is looking, that would also work.

This is what I'm going to try to use.  Fell free to use it yourself

 

Revised:

public static ForgeDirection getForgeDirection(Vec3 vec) {

	vec.normalize();

	double pitchR = Math.atan(vec.yCoord / Math.sqrt(Math.pow(vec.xCoord, 2) + Math.pow(vec.zCoord, 2)));
	double yawR = Math.atan2(-vec.zCoord, vec.xCoord);
	double pi = Math.PI;

	ForgeDirection dir = ForgeDirection.UNKNOWN;

	System.out.println("Pitch: " + pitchR + ", Yaw: " + yawR);

	if(yawR < -pi || yawR > pi)
		System.err.println("Yaw is too big!!");

	if(pitchR > -pi/4 && pitchR < pi/4){ // if the vector is mostly horizontal

		if(yawR >= -pi/4 && yawR <= pi/4)
			dir = ForgeDirection.EAST;
		else if(yawR < -pi/4 && yawR >= -3*pi/4)
			dir = ForgeDirection.SOUTH;
		else if(yawR > pi/4 && yawR <= 3*pi/4)
			dir = ForgeDirection.NORTH;
		else if(yawR < -3*pi/4 || yawR > 3*pi/4)
			dir = ForgeDirection.WEST;



	} else if(pitchR >= pi/4)
		dir = ForgeDirection.UP;
	else
		dir = ForgeDirection.DOWN;

	return dir;
}

 

Edit:  I have a gitch where it sometimes thinks South is West, and I have no idea why.

Edit 2: I fixed it.

Hi

 

Keen, that will work too.  Both of our methods give the same answer.  Yours is better if you want to know the exact yaw & pitch, although it has a small bug in it - what happens if vec.xCoord and vec.zCoord are both zero?

 

-TGG