T3D 1.1 Beta 3 - bad quad uv mapping [+FIX] - RESOLVED

Build: T3D 1.1 Beta 3 Pro

Platform: Windows (not sure about Mac/Linux)

Target: quad uv mapping

Issues: It looks like the "Wild Magic" doesn't work as it should
(from Engine/source/math/util/quadTransforms.*), as it does some "magic" calculations inside BiQuadToSqr::BiQuadToSqr().
If we change (from debugger) m_kD (x or y) to something else from 0.f or 3.78e-7 (or some other crazy "diagonal dist") like 1.f -- it renders fine.

This easily can be seen with short roads - those rendered in a bad way:

nVidia (looks like those are just rendering what it have, while ATI skips the rendering of bad data).
ATI

Another creativeness from nVidia:

Steps to Repeat:
Place one-segment road or use mission file from this archive.

Thread with discussion of the similar problem: UV mapping a quad.

Suggested Fix:
Change BiQuadToSqr::BiQuadToSqr so it looks like this:

BiQuadToSqr::BiQuadToSqr(  const Point2F &p00, 
                           const Point2F &p10, 
                           const Point2F &p11, 
                           const Point2F &p01 )
   : m_kP00( p00 )
{
   m_kB = p10 - p00;   // width
   m_kC = p01 - p00;   // height
   m_kD = p11 + p00 - p10 - p01; // diagonal dist

   if(mFabs(m_kD.x) < POINT_EPSILON) m_kD.x = 0.f;
   if(mFabs(m_kD.y) < POINT_EPSILON) m_kD.y = 0.f;

   m_fBC = mDotPerp( m_kB, m_kC );
   m_fBD = mDotPerp( m_kB, m_kD );   
   m_fCD = mDotPerp( m_kC, m_kD );
}

Added check for "zero".