From 20aef8acd2b079ff6d041d512016d77a789bdb9d Mon Sep 17 00:00:00 2001
From: Soper <soper@soper.xyz>
Date: Thu, 3 Jun 2021 16:19:04 -0400
Subject: [PATCH] creating a class for mathematical calculations

---
 src/xyz/soper/arty/util/ArtyMath.java | 46 +++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 src/xyz/soper/arty/util/ArtyMath.java

diff --git a/src/xyz/soper/arty/util/ArtyMath.java b/src/xyz/soper/arty/util/ArtyMath.java
new file mode 100644
index 0000000..3c37ee5
--- /dev/null
+++ b/src/xyz/soper/arty/util/ArtyMath.java
@@ -0,0 +1,46 @@
+package xyz.soper.arty.util;
+
+import org.bukkit.util.Vector;
+
+/**
+ * A class that handles mathematical calculations related to the mortar.
+ * Can calculate angles based on three-dimensional vectors and vice-versa
+ */
+public class ArtyMath {
+
+    /**
+     * Calculates the elevation angle of the vector.
+     * @param vector Vector to calculate angle from
+     * @return Angle from the ground in radians
+     */
+    public static double calculateElevation(Vector vector){
+        //TODO: Rewrite this method using math from scratch instead of another method
+        Vector groundProjection = new Vector(vector.getX(), 0, vector.getZ());
+        return groundProjection.angle(vector);
+    }
+
+    /**
+     * Calculates angle from east of the vector.
+     * @param vector Vector to calculate angle from
+     * @return Angle from east in radians
+     */
+    public static double calculateDirection(Vector vector){
+        vector.setY(0);
+        Vector eastVector = new Vector(1,0,0);
+        return eastVector.angle(vector);
+    }
+
+    /**
+     * Uses the elevation and direction angles given to return a unit vector corresponding to the angles.
+     * @param elevation Angle of elevation in radians
+     * @param direction Angle of direction from east in radians
+     * @return A unit vector with the given direction and elevation.
+     */
+    public static Vector calculateVector(double elevation, double direction){
+        double X = Math.cos(elevation)*Math.cos(direction);
+        double Y = Math.sin(elevation);
+        double Z = Math.cos(elevation)*Math.sin(direction);
+        return new Vector(X, Y, Z);
+    }
+
+}