X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fsixth%2Fe3d%2Fgeometry%2FPoint3D.java;h=440023f50eb52d280971c081e004db165d24843e;hb=f3da0bbe2c31d899156d410f8e75dabb0255efdf;hp=1c8700a5bda10161ac3d8ba261f0f5e716dea83b;hpb=3e2b906bd05617a4d9725de39ac14c9ea1f8736c;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 1c8700a..440023f 100755
--- a/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
@@ -1,13 +1,17 @@
 /*
- * Sixth 3D engine. Author: Svjatoslav Agejenko. 
+ * Sixth 3D engine. Author: Svjatoslav Agejenko.
  * This project is released under Creative Commons Zero (CC0) license.
  */
 package eu.svjatoslav.sixth.e3d.geometry;
 
+import eu.svjatoslav.sixth.e3d.renderer.octree.IntegerPoint;
+
 import static java.lang.Math.*;
 
 /**
  * Used to represent point in a 3D space or vector.
+ *
+ * @see Point2D
  */
 
 public class Point3D implements Cloneable {
@@ -36,6 +40,13 @@ public class Point3D implements Cloneable {
         this.z = z;
     }
 
+    public Point3D(IntegerPoint point) {
+        this.x = point.x;
+        this.y = point.y;
+        this.z = point.z;
+    }
+
+
     /**
      * Creates new current point by cloning coordinates from parent point.
      */
@@ -58,6 +69,21 @@ public class Point3D implements Cloneable {
         return this;
     }
 
+    /**
+     * Add coordinates of current point to other point. Value of current point will not be changed.
+     *
+     * @return current point.
+     */
+    public Point3D addTo(final Point3D... otherPoints) {
+        for (final Point3D otherPoint : otherPoints) otherPoint.add(this);
+        return this;
+    }
+
+    /**
+     * Create new point by cloning position of current point.
+     *
+     * @return newly created clone.
+     */
     public Point3D clone() {
         return new Point3D(this);
     }
@@ -143,12 +169,12 @@ public class Point3D implements Cloneable {
      * <p>
      * See also: <a href="https://marctenbosch.com/quaternions/">Let's remove Quaternions from every 3D Engine</a>
      *
-     * @param center   center point.
+     * @param center  center point.
      * @param angleXZ angle around XZ axis.
      * @param angleYZ angle around YZ axis.
      */
-    public void rotate(final Point3D center, final double angleXZ,
-                       final double angleYZ) {
+    public Point3D rotate(final Point3D center, final double angleXZ,
+                          final double angleYZ) {
         final double s1 = sin(angleXZ);
         final double c1 = cos(angleXZ);
 
@@ -168,6 +194,12 @@ public class Point3D implements Cloneable {
         x = x1 + center.x;
         y = y1 + center.y;
         z = z2 + center.z;
+
+        return this;
+    }
+
+    public Point3D rotate(final double angleXZ, final double angleYZ) {
+        return rotate(new Point3D(0, 0, 0), angleXZ, angleYZ);
     }
 
     /**
@@ -209,6 +241,7 @@ public class Point3D implements Cloneable {
 
     /**
      * Set current point coordinates to given values.
+     *
      * @param x X coordinate.
      * @param y Y coordinate.
      * @param z Z coordinate.