Changed license to Creative Commons Zero (CC0).

[sixth-3d.git] / src / main / java / eu / svjatoslav / sixth / e3d / geometry / Point3D.java

diff --git a/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java b/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
index ec38ef9..295c10a 100755 (executable)
--- a/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
@@ -1,10 +1,8 @@
 /*
- * Sixth 3D engine. Copyright ©2012-2020, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 3 of the GNU Lesser General Public License
- * or later as published by the Free Software Foundation.
+ * Sixth 3D engine. Author: Svjatoslav Agejenko. 
+ * This project is released under Creative Commons Zero (CC0) license.
  *
+*
  */
 
 package eu.svjatoslav.sixth.e3d.geometry;
@@ -15,9 +13,9 @@ import static java.lang.Math.*;
  * Used to represent point in a 3D space or vector.
  */
 
-public class Point3D extends Point2D implements Cloneable {
+public class Point3D implements Cloneable {
 
-    public double z;
+    public double x, y, z;
 
     public Point3D() {
     }
@@ -47,12 +45,12 @@ public class Point3D extends Point2D implements Cloneable {
     }
 
     public Point3D add(final Point3D direction) {
-        super.add(direction);
+        x += direction.x;
+        y += direction.y;
         z += direction.z;
         return this;
     }
 
-    @Override
     public Point3D clone() {
         return new Point3D(this);
     }
@@ -71,7 +69,6 @@ public class Point3D extends Point2D implements Cloneable {
         return this;
     }
 
-    @Override
     public boolean isZero() {
         return (x == 0) && (y == 0) && (z == 0);
     }
@@ -84,6 +81,10 @@ public class Point3D extends Point2D implements Cloneable {
         return Math.atan2(y - anotherPoint.y, z - anotherPoint.z);
     }
 
+    public double getAngleXY(final Point3D anotherPoint) {
+        return Math.atan2(x - anotherPoint.x, y - anotherPoint.y);
+    }
+
     /**
      * Compute distance to another point.
      */
@@ -95,12 +96,10 @@ public class Point3D extends Point2D implements Cloneable {
         return sqrt(((xDelta * xDelta) + (yDelta * yDelta) + (zDelta * zDelta)));
     }
 
-    @Override
     public double getVectorLength() {
         return sqrt(((x * x) + (y * y) + (z * z)));
     }
 
-    @Override
     public Point3D invert() {
         x = -x;
         y = -y;
@@ -131,7 +130,6 @@ public class Point3D extends Point2D implements Cloneable {
         z = z2 + center.z;
     }
 
-    @Override
     public void roundToInteger() {
         x = (int) x;
         y = (int) y;
@@ -159,7 +157,8 @@ public class Point3D extends Point2D implements Cloneable {
     }
 
     public Point3D subtract(final Point3D direction) {
-        super.subtract(direction);
+        x -= direction.x;
+        y -= direction.y;
         z -= direction.z;
         return this;
     }
@@ -196,9 +195,9 @@ public class Point3D extends Point2D implements Cloneable {
         return false;
     }
 
-    @Override
     public Point3D zero() {
-        super.zero();
+        x = 0;
+        y = 0;
         z = 0;
         return this;
     }