#3 Neozack - Re-patching patches

THIS PATCH INCLUDES:
1. The implementation of all MathHelper mathematical methods + tests
2. The refactoring of operations of Vector classes to point to 
MathHelperMethods + tests

SVN VERSION USED
I've been using the last SVN version:94.

FILES TOUCHED:
src/Microsoft.Xna.Framework/MathHelper.cs
  This file is completely coded with the exception of the inherited 
methods. All mathematical methods, hovever, are coded, and some are 
improved after checking results against MS's XNA.

src/Microsoft.Xna.Framework/Vector2.cs
src/Microsoft.Xna.Framework/Vector3.cs
src/Microsoft.Xna.Framework/Vector4.cs
  These classes now make use of MathHelper for their methods. That's been 
done with two purposes in mind: 1) if specifications change or 
improvements are done, we only have to change the code at one file, 
instead of all; 2) we don't have code repeated once and again through 
several files. Moreover, the code on the previous functions now has been 
improved to work even on trying situations (infinite values, NAN and 
overflow scenarios).

tests/Microsoft.Xna.Framework/MathHelperTests.cs
  This file is improved in relation to SVN revision:94. It includes 
extensive tests against both MS and Open XNA implementations. Some minor 
tests have been flagged inside #if MSXNAONLY/#endif blocks, because they 
provide different results depending on the treatment of types between 
Mono/.Net. These tests, however have XPlatform versions afterwards that 
are not inside the #if/#endif block, so that it still works the test on 
both platforms.

tests/Microsoft.Xna.Framework/Vector2Tests.cs
tests/Microsoft.Xna.Framework/Vector3Tests.cs
tests/Microsoft.Xna.Framework/Vector4Tests.cs
  These files have been improved. Some tests there did nothing or were 
skipped by the Nunits. Now all tests are performed, they check important 
situations and focus on testing that the code is really XPlatform. Most of 
the tests added make use of MathHelper, so that it shows that behind the 
scenes, these classes make use of MathHelper. Hence more effort has been 
put in testing the MathHelper class than the Vector classes.

tests/TestGame.cs
  The code crashed when compiling against Mono.Xna for a bad reference. 
Instead of "Tests" it should put "Test." Now is ok.

NOTES
1. Apart from the tests submitted, many others have been done, and all 
against both MSXNA and Mono.Xna.
2. Many of the tests performed showed that what sometimes we thought were 
minor differences between platforms (Mono/.Net) are in effect differences 
on implementation. Many methods, though returning single precission floats 
use doubles innerly. That has been added to some of the methods we already 
had and has been taken in account in the implementation of the new ones. 
Just for all to know, if some checking a == b seems not to work well, try 
to code the same function that returned a or b with double precission 
before using ApproximatelyEquals.
3. This patch substitutes all other patches I've sent. According to your 
instructions I've sent a comment on my previous patches saying that they 
are cancelled.

-- Isaac L (aka Neozack)
-- neozack@gmail.com
-- 20070625
Original issue reported on code.google.com by neoz...@gmail.com on 25 Jun 2007 at 5:17
Attachments:
[#3_Neozack Re-patching.patch](https://storage.googleapis.com/google-code-attachments/monoxna/issue-18/comment-0/#3_Neozack Re-patching.patch)
google-code-export / monoxna

#3 Neozack - Re-patching patches #18
