The first step towards Vec3d support in LineSegment I have introduced
a typedef into LineSegment:
typedef Vec3d vec_type;
typedef vec_type::value_type value_type;
I have also changed various methods and intenals of LineSegment to use
these typedefs rather than just Vec3. Its a first step as I haven't
changed all the internals to use floats - they should now use the
value_type method. We should also have several intersect functions,
ones with float/Vec3f and ones with double/Vec3d to ensure that
calling code can remain using the types that suit the calling code.
I have checked these changes as they stand to get the ball rolling.
Andy's changes need to be reviewed against mine, and a new set of
changes made to complete the work above.
Robert.
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