Not the right behaviour for Bezier splines

[Lanuhum]

http://news.povray.org/povray.binaries.images/message/%3Cweb.5727406d27a8e5387a3e03fe0%40news.povray.org%3E/#%3Cweb.5727406d27a8e5387a3e03fe0%40news.povray.org%3E

File '/tmp/Empty.pov' line 17: Parse Error: Incorrect point in lathe. Fatal error in parser: Cannot parse input. Render failed

version 3.7;

include "functions.inc"

global_settings { assumed_gamma 1.000000 max_trace_level 3 charset utf8 } sky_sphere { pigment {rgb<0.050, 0.050, 0.050>} }

declare Default_texture = texture{pigment {rgb 0.8}}

declare data_Lathe_shape_ob =

lathe { bezier_spline 8, <0,1><0.25,0.75><-0.07594,0.5><0.1875,0.1875> <0.1875,0.1875><0.3929,-0.05616><0,-0.5><0,-1> } object {data_Lathe_shape_ob texture {Default_texture} matrix <1.000000, 0.000000, 0.000000, 0.000000, -0.000000, -1.000000, 0.000000, 1.000000, -0.000000, 0.000000, 0.000000, 0.000000> }

light_source { <5.07,5.58,4.28> color rgb<1, 1, 1> fade_distance 25.0000000000 fade_power 1 } camera { perspective location <0,0,0> look_at <0,0,-1> right <-1.7777777777777777, 0, 0> up <0, 1, 0> angle 49.134343 rotate <-27.098163, 46.688390, -0.903519> translate <7.481132, 5.343666, 6.507640> }

[wfpokorny]

Attaching a large set of spline related test cases used in part to evaluate a code update to permit negative control points in a bezier spline lathe. lathePrismSplineIssuesTestCases.tar.gz

[c-lipka]

I think this should be fixed with commit 2ec4a4e / pull request #62.