- as 50x50x2 = 500 triangles in a mesh2{} shape.

This image is a result from some experiments I
have done recently with functions in POV-Ray
v3.5.

The shape is made by a call to 2 macros:

One macro that builds NURBS functions and one
that takes 3 such functions as parameters and
generates a mesh from them.

This is how these macros; ParametricMesh() and
NURBS_Surface_Fn() can be called in order to
make this shape:

object {
  ParametricMesh(
    NURBS_Surface_Fn(Order, Knots, Points, Weights, x),
    NURBS_Surface_Fn(Order, Knots, Points, Weights, y),
    NURBS_Surface_Fn(Order, Knots, Points, Weights, z),
    <0.01, 0.01>, <2.00, 2.00>, 50*<1, 1>
  )
  texture { ... }
}

(The Knots, Points and Weights parameters are
arrays containing the vital information for
the NURBS.)

Here are some statistics:

1 GHz Pentium 3: 

Parsing time: 9 sec
Rendering time: 4 sec


100 MHz Pentium:

Parsing time: 1 min 40 sec
Rendering time: 1 min 5 sec


Now I'll go and make sure that my macros
REALLY works as they should and try to find
out how to make the macros generate smaller
functions.


Tor Olav

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