[texture UVs] How to get a box at a specific part of a texture?

OpenGL Development
#1

So I’m trying to make a method that returns a per-vertex (4) array of sub-texture UVs from a texture, and a rectangle.
Mainly for spritesheets really.


//tex.source = BufferedImage loaded correctly
//x, y, y1, y2 = The rectangle dimensions
//This is my attempt at making this block, it doesn't work, I can confirm that. I just need some help
//figuring this whole sub-tex coord thing out.
public static Vector2f[] getSubTextureUV(Texture tex, int x, int y, int x1, int y1){
	Vector2f[] texUV = new Vector2f[4];
	if(tex == null) throw new NullPointerException("Texture is null");
	
	texUV[0] = new Vector2f(0,                       y/tex.source.getHeight());
	texUV[1] = new Vector2f(0,                       0);
	texUV[2] = new Vector2f(x1/tex.source.getWidth(), 0);
	texUV[3] = new Vector2f(x1/tex.source.getWidth(), y1/tex.source.getHeight());
	
	System.out.println(texUV[0].x + " " + texUV[0].y);
	System.out.println(texUV[1].x + " " + texUV[1].y);
	System.out.println(texUV[2].x + " " + texUV[2].y);
	System.out.println(texUV[3].x + " " + texUV[3].y);
	
	return texUV;
}

...

Vector2f[] myTextureUVs = getSubTextureUV(myTex, 16, 16, 32, 32); //Would take the texture at point 16,16, and the resolution of 16,16

Current output:

0.0 0.0
0.0 0.0
0.0 0.0
0.0 0.0

(Not that it matters ;))