From 68eb9f1ea136428b64fe9246865fbabb8c82f6ac Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Thu, 6 Mar 2014 23:30:03 +0100
Subject: Bug 801: AffineTransform: Remove Serializable, make methods final;
 FloatUtil: Add DEBUG and description about Row-Major and Column-Major Order.
 AABBOX: Use FloatUtil.DEBUG for mapToWindow(..)

---
 .../classes/com/jogamp/opengl/math/FloatUtil.java  | 26 ++++++++++++++----
 .../com/jogamp/opengl/math/geom/AABBox.java        | 31 +++++++++++++++++-----
 2 files changed, 45 insertions(+), 12 deletions(-)

(limited to 'src/jogl/classes/com/jogamp/opengl/math')

diff --git a/src/jogl/classes/com/jogamp/opengl/math/FloatUtil.java b/src/jogl/classes/com/jogamp/opengl/math/FloatUtil.java
index 191a83241..d2976357d 100644
--- a/src/jogl/classes/com/jogamp/opengl/math/FloatUtil.java
+++ b/src/jogl/classes/com/jogamp/opengl/math/FloatUtil.java
@@ -29,23 +29,39 @@ package com.jogamp.opengl.math;
 
 import java.nio.FloatBuffer;
 
+import jogamp.opengl.Debug;
+
 import com.jogamp.common.os.Platform;
 
 /**
  * Basic Float math utility functions.
  * <p>
  * Implementation assumes linear matrix layout in column-major order
- * matching OpenGL's implementation.
+ * matching OpenGL's implementation, translation matrix example:
+ * <pre>
+   Row-Major Order:
+     1 0 0 x
+     0 1 0 y
+     0 0 1 z
+     0 0 0 1
+ * </pre>
+ * <pre>
+   Column-Major Order:
+     1 0 0 0
+     0 1 0 0
+     0 0 1 0
+     x y z 1
+ * </pre>
  * </p>
  * <p>
  * Derived from ProjectFloat.java - Created 11-jan-2004
  * </p>
  *
- * @author Erik Duijs
- * @author Kenneth Russell
- * @author Sven Gothel
+ * @author Erik Duijs, Kenneth Russell, et al.
  */
 public class FloatUtil {
+  public static final boolean DEBUG = Debug.debug("Math");
+
   private static final float[] IDENTITY_MATRIX =
     new float[] {
       1.0f, 0.0f, 0.0f, 0.0f,
@@ -558,7 +574,7 @@ public class FloatUtil {
 
   public static final float PI = 3.14159265358979323846f;
 
-  public static float abs(float a) { return (float) java.lang.Math.abs(a);  }
+  public static float abs(float a) { return java.lang.Math.abs(a);  }
 
   public static float pow(float a, float b) { return (float) java.lang.Math.pow(a, b);  }
 
diff --git a/src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java b/src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java
index d0566b54e..c28b36f82 100644
--- a/src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java
+++ b/src/jogl/classes/com/jogamp/opengl/math/geom/AABBox.java
@@ -27,6 +27,7 @@
  */
 package com.jogamp.opengl.math.geom;
 
+import com.jogamp.opengl.math.FloatUtil;
 import com.jogamp.opengl.math.VectorUtil;
 import com.jogamp.opengl.util.PMVMatrix;
 
@@ -38,6 +39,7 @@ import com.jogamp.opengl.util.PMVMatrix;
  *
  */
 public class AABBox implements Cloneable {
+    private static final boolean DEBUG = FloatUtil.DEBUG;
     private final float[] low = new float[3];
     private final float[] high = new float[3];
     private final float[] center = new float[3];
@@ -168,20 +170,26 @@ public class AABBox implements Cloneable {
      */
     public final void resize(float x, float y, float z) {
         /** test low */
-        if (x < low[0])
+        if (x < low[0]) {
             low[0] = x;
-        if (y < low[1])
+        }
+        if (y < low[1]) {
             low[1] = y;
-        if (z < low[2])
+        }
+        if (z < low[2]) {
             low[2] = z;
+        }
 
         /** test high */
-        if (x > high[0])
+        if (x > high[0]) {
             high[0] = x;
-        if (y > high[1])
+        }
+        if (y > high[1]) {
             high[1] = y;
-        if (z > high[2])
+        }
+        if (z > high[2]) {
             high[2] = z;
+        }
 
         computeCenter();
     }
@@ -359,7 +367,7 @@ public class AABBox implements Cloneable {
      * only 4 {@link PMVMatrix#gluProject(float, float, float, int[], int, float[], int) gluProject}
      * operations are made on points [1..4] using {@link #getCenter()}'s z-value.
      * Otherwise 8 {@link PMVMatrix#gluProject(float, float, float, int[], int, float[], int) gluProject}
-     * operation on all 8 points are made.
+     * operation on all 8 points are performed.
      * </p>
      * <pre>
      *  [2] ------ [4]
@@ -374,15 +382,21 @@ public class AABBox implements Cloneable {
      * @return
      */
     public AABBox mapToWindow(final AABBox result, final PMVMatrix pmv, final int[] view, final boolean useCenterZ, float[] tmpV3) {
+        // System.err.printf("AABBox.mapToWindow.0: view[%d, %d, %d, %d], this %s%n", view[0], view[1], view[2], view[3], toString());
         float objZ = useCenterZ ? center[2] : getMinZ();
         pmv.gluProject(getMinX(), getMinY(), objZ, view, 0, tmpV3, 0);
+        // System.err.printf("AABBox.mapToWindow.p1: %f, %f, %f -> %f, %f, %f%n", getMinX(), getMinY(), objZ, tmpV3[0], tmpV3[1], tmpV3[2]);
+        // System.err.printf("AABBox.mapToWindow.p1: %s%n", pmv.toString());
         result.reset();
         result.resize(tmpV3, 0);
         pmv.gluProject(getMinX(), getMaxY(), objZ, view, 0, tmpV3, 0);
+        // System.err.printf("AABBox.mapToWindow.p2: %f, %f, %f -> %f, %f, %f%n", getMinX(), getMaxY(), objZ, tmpV3[0], tmpV3[1], tmpV3[2]);
         result.resize(tmpV3, 0);
         pmv.gluProject(getMaxX(), getMinY(), objZ, view, 0, tmpV3, 0);
+        // System.err.printf("AABBox.mapToWindow.p3: %f, %f, %f -> %f, %f, %f%n", getMaxX(), getMinY(), objZ, tmpV3[0], tmpV3[1], tmpV3[2]);
         result.resize(tmpV3, 0);
         pmv.gluProject(getMaxX(), getMaxY(), objZ, view, 0, tmpV3, 0);
+        // System.err.printf("AABBox.mapToWindow.p4: %f, %f, %f -> %f, %f, %f%n", getMaxX(), getMaxY(), objZ, tmpV3[0], tmpV3[1], tmpV3[2]);
         result.resize(tmpV3, 0);
         if( !useCenterZ ) {
             objZ = getMaxZ();
@@ -395,6 +409,9 @@ public class AABBox implements Cloneable {
             pmv.gluProject(getMaxX(), getMaxY(), objZ, view, 0, tmpV3, 0);
             result.resize(tmpV3, 0);
         }
+        if( DEBUG ) {
+            System.err.printf("AABBox.mapToWindow: view[%d, %d], this %s -> %s%n", view[0], view[1], toString(), result.toString());
+        }
         return result;
     }
 
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