X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fsixth%2Fe3d%2Fgeometry%2FPoint3D.java;h=295c10a512713dbc82ac5ca17091e336b4df3a5e;hb=197ac1b87328bb5b06ba52d3768af04b2007b087;hp=462f310ac3f2e3aad1dcf0fdfcdfe88e9a67bfa0;hpb=baab2e2c2ad89695293f3136311c585c9a5afed1;p=sixth-3d.git

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 462f310..295c10a 100755
--- a/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
@@ -1,25 +1,21 @@
 /*
- * Sixth 3D engine. Copyright ©2012-2018, 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;
 
-import static java.lang.Math.cos;
-import static java.lang.Math.sin;
-import static java.lang.Math.sqrt;
+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() {
     }
@@ -49,12 +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);
     }
@@ -73,8 +69,7 @@ public class Point3D extends Point2D implements Cloneable {
         return this;
     }
 
-    @Override
-    public boolean isZero(){
+    public boolean isZero() {
         return (x == 0) && (y == 0) && (z == 0);
     }
 
@@ -86,6 +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.
      */
@@ -97,12 +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;
@@ -133,7 +130,6 @@ public class Point3D extends Point2D implements Cloneable {
         z = z2 + center.z;
     }
 
-    @Override
     public void roundToInteger() {
         x = (int) x;
         y = (int) y;
@@ -161,7 +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;
     }
@@ -198,9 +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;
     }