Improved JavaDoc.

diff --git a/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point2D.java b/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point2D.java
index e22808c..a82382f 100755 (executable)
--- a/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point2D.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point2D.java
@@ -18,14 +18,19 @@ public class Point2D implements Cloneable {
         this.y = y;
     }
 
-    public Point2D(final Point2D source) {
-        x = source.x;
-        y = source.y;
+    public Point2D(final Point2D parent) {
+        x = parent.x;
+        y = parent.y;
     }
 
-    public Point2D add(final Point2D direction) {
-        x += direction.x;
-        y += direction.y;
+    /**
+     * Add other point to current point.
+     *
+     * @return current point.
+     */
+    public Point2D add(final Point2D otherPoint) {
+        x += otherPoint.x;
+        y += otherPoint.y;
         return this;
     }
 
@@ -38,9 +43,9 @@ public class Point2D implements Cloneable {
         return new Point2D(this);
     }
 
-    public void clone(final Point2D source) {
-        x = source.x;
-        y = source.y;
+    public void clone(final Point2D parent) {
+        x = parent.x;
+        y = parent.y;
     }
 
     public Point2D getMiddle(final Point2D p1, final Point2D p2) {
@@ -78,9 +83,14 @@ public class Point2D implements Cloneable {
         y = (int) y;
     }
 
-    public Point2D subtract(final Point2D point) {
-        x -= point.x;
-        y -= point.y;
+    /**
+     * Subtract other point from current point.
+     *
+     * @return current point.
+     */
+    public Point2D subtract(final Point2D otherPoint) {
+        x -= otherPoint.x;
+        y -= otherPoint.y;
         return this;
     }
 

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 54fbd35..e2c9868 100755 (executable)
--- a/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/geometry/Point3D.java
@@ -35,16 +35,24 @@ public class Point3D implements Cloneable {
         this.z = z;
     }
 
-    public Point3D(final Point3D parentPoint) {
-        x = parentPoint.x;
-        y = parentPoint.y;
-        z = parentPoint.z;
+    /**
+     * Creates new current point by cloning coordinates from parent point.
+     */
+    public Point3D(final Point3D parent) {
+        x = parent.x;
+        y = parent.y;
+        z = parent.z;
     }
 
-    public Point3D add(final Point3D direction) {
-        x += direction.x;
-        y += direction.y;
-        z += direction.z;
+    /**
+     * Add other point to current point.
+     *
+     * @return current point.
+     */
+    public Point3D add(final Point3D otherPoint) {
+        x += otherPoint.x;
+        y += otherPoint.y;
+        z += otherPoint.z;
         return this;
     }
 
@@ -52,10 +60,10 @@ public class Point3D implements Cloneable {
         return new Point3D(this);
     }
 
-    public Point3D clone(final Point3D source) {
-        x = source.x;
-        y = source.y;
-        z = source.z;
+    public Point3D clone(final Point3D parent) {
+        x = parent.x;
+        y = parent.y;
+        z = parent.z;
         return this;
     }
 
@@ -153,10 +161,15 @@ public class Point3D implements Cloneable {
         this.z = z;
     }
 
-    public Point3D subtract(final Point3D direction) {
-        x -= direction.x;
-        y -= direction.y;
-        z -= direction.z;
+    /**
+     * Subtract other point from current point.
+     *
+     * @return current point.
+     */
+    public Point3D subtract(final Point3D otherPoint) {
+        x -= otherPoint.x;
+        y -= otherPoint.y;
+        z -= otherPoint.z;
         return this;
     }
 
@@ -165,33 +178,45 @@ public class Point3D implements Cloneable {
         return "x:" + x + " y:" + y + " z:" + z;
     }
 
+    /**
+     * @return current point.
+     */
     public Point3D translateX(final double xIncrement) {
         x += xIncrement;
         return this;
     }
 
+    /**
+     * @return current point.
+     */
     public Point3D translateY(final double yIncrement) {
         y += yIncrement;
         return this;
     }
 
+    /**
+     * @return current point.
+     */
     public Point3D translateZ(final double zIncrement) {
         z += zIncrement;
         return this;
     }
 
+    /**
+     * Here we assume that Z coordinate is distance to the viewer.
+     * If Z is positive, then point is in front of the viewer, and therefore it is visible.
+     *
+     * @return point visibility status.
+     */
     public boolean isVisible() {
-
-        if (z > 0)
-            return true;
-
-        // if ((z > 0) && (x > -1000) && (y > -1000) && (x < 2000) && (y <
-        // 2000))
-        // return true;
-
-        return false;
+        return z > 0;
     }
 
+    /**
+     * Resets point to 0 coordinate in X, Y and Z axis.
+     *
+     * @return current point.
+     */
     public Point3D zero() {
         x = 0;
         y = 0;

diff --git a/src/main/java/eu/svjatoslav/sixth/e3d/gui/ViewPanel.java b/src/main/java/eu/svjatoslav/sixth/e3d/gui/ViewPanel.java
index 7cf2b2f..7f9b7eb 100755 (executable)
--- a/src/main/java/eu/svjatoslav/sixth/e3d/gui/ViewPanel.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/gui/ViewPanel.java
@@ -34,11 +34,13 @@ public class ViewPanel extends JPanel implements ComponentListener {
     private Timer canvasUpdateTimer;
     private ViewUpdateTimerTask canvasUpdateTimerTask;
     private RenderingContext renderingContext = null;
+
     /**
-     * Currently target FPS for this view. It can be changed at runtime. Also when nothing
-     * changes in the view, then frames are not really repainted.
+     * Currently target frames per second rate for this view. Target FPS can be changed at runtime.
+     * 3D engine tries to be smart and only repaints screen when there are visible changes.
      */
     private int targetFPS = 60;
+
     /**
      * Set to true if it is known than next frame reeds to be painted. Flag is cleared
      * immediately after frame got updated.