package com.mojang.blaze3d.vertex;

import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import org.joml.Vector3f;
import org.joml.Vector3fc;

@Environment(EnvType.CLIENT)
public class CompactVectorArray {
	private static final int VECTOR_SIZE = 3;
	private static final int OFFSET_X = 0;
	private static final int OFFSET_Y = 1;
	private static final int OFFSET_Z = 2;
	private final float[] contents;

	public CompactVectorArray(final int count) {
		this.contents = new float[3 * count];
	}

	public int size() {
		return this.contents.length / 3;
	}

	public void set(final int index, final Vector3fc v) {
		this.set(index, v.x(), v.y(), v.z());
	}

	public void set(final int index, final float x, final float y, final float z) {
		this.contents[3 * index + 0] = x;
		this.contents[3 * index + 1] = y;
		this.contents[3 * index + 2] = z;
	}

	public Vector3f get(final int index, final Vector3f output) {
		return output.set(this.contents[3 * index + 0], this.contents[3 * index + 1], this.contents[3 * index + 2]);
	}

	public float getX(final int index) {
		return this.contents[3 * index + 0];
	}

	public float getY(final int index) {
		return this.contents[3 * index + 1];
	}

	public float getZ(final int index) {
		return this.contents[3 * index + 2];
	}
}