/usr/lib/ocaml/lablgl/gluNurbs.ml is in liblablgl-ocaml-dev 1:1.05-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | (* $Id: gluNurbs.ml,v 1.6 2001-10-01 02:59:13 garrigue Exp $ *)
open Gl
type t
external begin_curve : t -> unit = "ml_gluBeginCurve"
external begin_surface : t -> unit = "ml_gluBeginSurface"
external begin_trim : t -> unit = "ml_gluBeginTrim"
external end_curve : t -> unit = "ml_gluEndCurve"
external end_surface : t -> unit = "ml_gluEndSurface"
external end_trim : t -> unit = "ml_gluEndTrim"
external load_sampling_matrices :
t -> model:[`float] Raw.t ->
persp:[`float] Raw.t -> view:[`int] Raw.t -> unit
= "ml_gluLoadSamplingMatrices"
external create : unit -> t = "ml_gluNewNurbsRenderer"
external curve :
t -> knots:[`float] Raw.t -> control:[`float] Raw.t ->
order:int -> kind:[< GlMap.target] -> unit
= "ml_gluNurbsCurve"
let curve nurb ~knots ~control ~order ~kind:t =
let arity = target_size t in
if (Array.length knots - order) * arity <> Array.length control
then invalid_arg "GluNurbs.curve";
let knots = Raw.of_float_array ~kind:`float knots
and control = Raw.of_float_array ~kind:`float control in
curve nurb ~knots ~control ~order ~kind:t
type property = [
`sampling_method of [`path_length|`parametric_error|`domain_distance]
| `sampling_tolerance of int
| `parametric_tolerance of float
| `u_step of int
| `v_step of int
| `display_mode of [`fill|`polygon|`patch]
| `culling of bool
| `auto_load_matrix of bool
]
external property : t -> property -> unit
= "ml_gluNurbsProperty"
external surface :
t -> sknots:[`float] Raw.t -> tknots:[`float] Raw.t ->
tstride:int -> control:[`float] Raw.t ->
sorder:int -> torder:int -> target:[< target] -> unit
= "ml_gluNurbsSurface_bc" "ml_gluNurbsSurface"
let surface t ~sknots ~tknots ~control ~sorder ~torder ~target =
let cl = Array.length control in
if cl = 0 then invalid_arg "GluNurb.curve";
let tstride = Array.length control.(0) in
let sl = Array.length sknots and tl = Array.length tknots in
if tl <> cl + torder or (sl - sorder) * target_size target <> tstride
then invalid_arg "GluNurb.curve";
let sknots = Raw.of_float_array ~kind:`float sknots in
let tknots = Raw.of_float_array ~kind:`float tknots in
let co = Raw.create `float ~len:(cl * tstride) in
for i = 0 to cl - 1 do
if Array.length control.(i) <> tstride then invalid_arg "GluNurb.curve";
Raw.sets_float co ~pos:(i*tstride) control.(i)
done;
surface t ~sknots ~tknots ~tstride ~control:co
~sorder ~torder ~target
external pwl_curve :
t -> count:int -> [`float] Raw.t -> kind:[`trim_2|`trim_3] -> unit
= "ml_gluPwlCurve"
let pwl_curve nurb ~kind:t data =
let len = Array.length data
and raw = Raw.of_float_array ~kind:`float data
and stride = match t with `trim_2 -> 2 | `trim_3 -> 3 in
if len mod stride <> 0 then invalid_arg "GluNurb.pwl_curve";
pwl_curve nurb ~count:(len/stride) raw ~kind:t
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