Bug 1452 - Decouple math functionality to 'com.jogamp.math' to be toolkit agnostic (PMVMatrix, Matrix4f, Vec4f, ..)

Math functionality (PMVMatrix, Matrix4f, Vec4f, ..)
- shall be used toolkit agnostic, e.g. independent from OpenGL
- shall be reused within our upcoming Vulkan implementation
- may also move outside of JOGL, i.e. GlueGen or within its own package to be reused for other purposed.

The 'com.jogamp.opengl.util.PMVMatrix' currently also used to feed in GLUniformData
via the toolkit agnostic SyncAction and SyncBuffer
shall also be split to a toolkit agnostic variant.

An OpenGL PMVMatrix specialization implementing GLMatrixFunc can still exist,
being derived from the toolkit agnostic base implementation.

+++

Initial commit .. compile clean, passing most unit tests.

1 files changed, 61 insertions, 0 deletions

diff --git a/src/jogl/classes/com/jogamp/math/FixedPoint.java b/src/jogl/classes/com/jogamp/math/FixedPoint.java
new file mode 100644
index 000000000..d40bd6dac
--- /dev/null
+++ b/src/jogl/classes/com/jogamp/math/FixedPoint.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ */
+
+package com.jogamp.math;
+
+public class FixedPoint {
+  public static final int toFixed(int value) {
+    if (value < -32768) value = -32768;
+    if (value > 32767) value = 32767;
+    return value * 65536;
+  }
+
+  public static final int toFixed(float value) {
+    if (value < -32768) value = -32768;
+    if (value > 32767) value = 32767;
+    return (int)(value * 65536.0f);
+  }
+
+  public static final float toFloat(final int value) {
+    return value/65536.0f;
+  }
+
+  public static final int mult(final int x1, final int x2) {
+    return (int) ( ((long)x1*(long)x2)/65536 );
+  }
+
+  public static final int div(final int x1, final int x2) {
+    return (int) ( (((long)x1)<<16)/x2 );
+  }
+}
+