db4o-sp Code-SVN

I have created robust core of spatial extension. Contains evaluation of expression by exact and/or approximate computation. Support expression witch contains operations +,-,*,/ and sqrt. Support exact computation of sign of expression with dynamic filter for increase of speed.
Exact computation is based on BigDecimal with unlimited context - BigDecimalAdapter,
Approximate computation is based on RealInterval with fast context (type from JInterval library) - RealIntervalAdapter. Simply tested on sign of determinant.

Added basic CGAlgorithms orientation and incircle for 2D and 3D (based on operation +,-, * only). Its implementation based on robust Expression of course. Strategy design pattern is used for algorithms. Simply tested on 2D and 3D coordinates.

Support basic referencing (ISO 19111) from library JScience. Created general 2D and 3D coordinates and crs. Referencsing from JScience supports conversions, crs, cs and coordinates.

Removed class EGCDeterminant because of foundation of Expression.

Progress on EGC.
Expr - precision driven development on Real from JScience - failed.
Real - failed - not exact
Rational - failed - 0/x - inverse problem in LUDecomposition.
BigDecimal - ok, but problem with zero - robust problem possibility. (B(E) = 0E-100 - static).
In next revision will be deleted method for failed solutions,

GeometryFactory class created.
GeometryFactoryTest class initialized.

Added doc directory for javadoc.

Comment for r11: Added Generic and default CRS and Coordinates for 2D and 3D Cartesian place.

Created basic set of API classes.
Implemented algorithm for exact determination of sign of determinant with use of dynamic filter based on interval arithmetic.
Used libraries JScience and JInterval.

Just begin.

Creating and initialization of project completed.
Created KnowledgeTest.java file.

init

Creating .of project db4o.sp

Creating .of project db4o.sp