4 OpenGL Vectors

The sgl/gl-vectors module supports OpenGL programming with cvectors. In this document and in the error messages, a “gl-vector” is just a cvector, while a “gl-‹type›-vector” is a cvector with an appropriate type. Use the sgl/gl-vectors module vectors instead of a Racket cvector directly, because they are specialized to handle the OpenGL types correctly.

procedure
(gl-vector? v) → boolean?
  v : any/c
procedure
(gl-vector->vector vec) → vector?
  vec : cvector?
procedure
(gl-vector->list vec) → list?
  vec : cvector?
procedure
(gl-vector-length vec) → exact-nonnegative-integer?
  vec : cvector?
procedure
(gl-vector-ref vec pos) → any/v
  vec : cvector?
  pos : exact-nonnegative-integer?
procedure
(gl-vector-set! vec pos v) → void?
  vec : cvector?
  pos : exact-nonnegative-integer?
  v : any/v

Synonyms for cvector?, cvector->vector, cvector-length, etc.

procedure
(gl-byte-vector? v) → boolean?
  v : any/c
procedure
(make-gl-byte-vector pos) → gl-byte-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-byte-vector v ...) → gl-byte-vector?
  v : byte?
procedure
(vector->gl-byte-vector v ...) → gl-byte-vector?
  v : (vectorof byte?)
procedure
(list->gl-byte-vector v ...) → gl-byte-vector?
  v : (listof byte?)
procedure
(gl-byte-vector+ vec ...+) → gl-byte-vector?
  vec : gl-byte-vector?
procedure
(gl-byte-vector- vec ...+) → gl-byte-vector?
  vec : gl-byte-vector?
procedure
(gl-byte-vector* x vec) → gl-byte-vector?
  x : real?
  vec : gl-byte-vector?

Operations on vectors of byte elements. The gl-byte-vector+ and gl-byte-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-byte-vector* function multiplies each element of vec by x.

procedure
(gl-ubyte-vector? v) → boolean?
  v : any/c
procedure
(make-gl-ubyte-vector pos) → gl-ubyte-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-ubyte-vector v ...) → gl-ubyte-vector?
  v : ubyte?
procedure
(vector->gl-ubyte-vector v ...) → gl-ubyte-vector?
  v : (vectorof ubyte?)
procedure
(list->gl-ubyte-vector v ...) → gl-ubyte-vector?
  v : (listof ubyte?)
procedure
(gl-ubyte-vector+ vec ...+) → gl-ubyte-vector?
  vec : gl-ubyte-vector?
procedure
(gl-ubyte-vector- vec ...+) → gl-ubyte-vector?
  vec : gl-ubyte-vector?
procedure
(gl-ubyte-vector* x vec) → gl-ubyte-vector?
  x : real?
  vec : gl-ubyte-vector?

Operations on vectors of ubyte elements. The gl-ubyte-vector+ and gl-ubyte-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-ubyte-vector* function multiplies each element of vec by x.

procedure
(gl-short-vector? v) → boolean?
  v : any/c
procedure
(make-gl-short-vector pos) → gl-short-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-short-vector v ...) → gl-short-vector?
  v : short?
procedure
(vector->gl-short-vector v ...) → gl-short-vector?
  v : (vectorof short?)
procedure
(list->gl-short-vector v ...) → gl-short-vector?
  v : (listof short?)
procedure
(gl-short-vector+ vec ...+) → gl-short-vector?
  vec : gl-short-vector?
procedure
(gl-short-vector- vec ...+) → gl-short-vector?
  vec : gl-short-vector?
procedure
(gl-short-vector* x vec) → gl-short-vector?
  x : real?
  vec : gl-short-vector?

Operations on vectors of short elements. The gl-short-vector+ and gl-short-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-short-vector* function multiplies each element of vec by x.

procedure
(gl-ushort-vector? v) → boolean?
  v : any/c
procedure
(make-gl-ushort-vector pos) → gl-ushort-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-ushort-vector v ...) → gl-ushort-vector?
  v : ushort?
procedure
(vector->gl-ushort-vector v ...) → gl-ushort-vector?
  v : (vectorof ushort?)
procedure
(list->gl-ushort-vector v ...) → gl-ushort-vector?
  v : (listof ushort?)
procedure
(gl-ushort-vector+ vec ...+) → gl-ushort-vector?
  vec : gl-ushort-vector?
procedure
(gl-ushort-vector- vec ...+) → gl-ushort-vector?
  vec : gl-ushort-vector?
procedure
(gl-ushort-vector* x vec) → gl-ushort-vector?
  x : real?
  vec : gl-ushort-vector?

Operations on vectors of ushort elements. The gl-ushort-vector+ and gl-ushort-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-ushort-vector* function multiplies each element of vec by x.

procedure
(gl-int-vector? v) → boolean?
  v : any/c
procedure
(make-gl-int-vector pos) → gl-int-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-int-vector v ...) → gl-int-vector?
  v : int?
procedure
(vector->gl-int-vector v ...) → gl-int-vector?
  v : (vectorof int?)
procedure
(list->gl-int-vector v ...) → gl-int-vector?
  v : (listof int?)
procedure
(gl-int-vector+ vec ...+) → gl-int-vector?
  vec : gl-int-vector?
procedure
(gl-int-vector- vec ...+) → gl-int-vector?
  vec : gl-int-vector?
procedure
(gl-int-vector* x vec) → gl-int-vector?
  x : real?
  vec : gl-int-vector?

Operations on vectors of int elements. The gl-int-vector+ and gl-int-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-int-vector* function multiplies each element of vec by x.

procedure
(gl-uint-vector? v) → boolean?
  v : any/c
procedure
(make-gl-uint-vector pos) → gl-uint-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-uint-vector v ...) → gl-uint-vector?
  v : uint?
procedure
(vector->gl-uint-vector v ...) → gl-uint-vector?
  v : (vectorof uint?)
procedure
(list->gl-uint-vector v ...) → gl-uint-vector?
  v : (listof uint?)
procedure
(gl-uint-vector+ vec ...+) → gl-uint-vector?
  vec : gl-uint-vector?
procedure
(gl-uint-vector- vec ...+) → gl-uint-vector?
  vec : gl-uint-vector?
procedure
(gl-uint-vector* x vec) → gl-uint-vector?
  x : real?
  vec : gl-uint-vector?

Operations on vectors of uint elements. The gl-uint-vector+ and gl-uint-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-uint-vector* function multiplies each element of vec by x.

procedure
(gl-float-vector? v) → boolean?
  v : any/c
procedure
(make-gl-float-vector pos) → gl-float-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-float-vector v ...) → gl-float-vector?
  v : float?
procedure
(vector->gl-float-vector v ...) → gl-float-vector?
  v : (vectorof float?)
procedure
(list->gl-float-vector v ...) → gl-float-vector?
  v : (listof float?)
procedure
(gl-float-vector+ vec ...+) → gl-float-vector?
  vec : gl-float-vector?
procedure
(gl-float-vector- vec ...+) → gl-float-vector?
  vec : gl-float-vector?
procedure
(gl-float-vector* x vec) → gl-float-vector?
  x : real?
  vec : gl-float-vector?

Operations on vectors of float elements. The gl-float-vector+ and gl-float-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-float-vector* function multiplies each element of vec by x.

procedure
(gl-double-vector? v) → boolean?
  v : any/c
procedure
(make-gl-double-vector pos) → gl-double-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-double-vector v ...) → gl-double-vector?
  v : double?
procedure
(vector->gl-double-vector v ...) → gl-double-vector?
  v : (vectorof double?)
procedure
(list->gl-double-vector v ...) → gl-double-vector?
  v : (listof double?)
procedure
(gl-double-vector+ vec ...+) → gl-double-vector?
  vec : gl-double-vector?
procedure
(gl-double-vector- vec ...+) → gl-double-vector?
  vec : gl-double-vector?
procedure
(gl-double-vector* x vec) → gl-double-vector?
  x : real?
  vec : gl-double-vector?

Operations on vectors of double elements. The gl-double-vector+ and gl-double-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-double-vector* function multiplies each element of vec by x.

procedure
(gl-boolean-vector? v) → boolean?
  v : any/c
procedure
(make-gl-boolean-vector pos) → gl-boolean-vector?
  pos : exact-nonnegative-integer?
procedure
(gl-boolean-vector v ...) → gl-boolean-vector?
  v : boolean?
procedure
(vector->gl-boolean-vector v ...) → gl-boolean-vector?
  v : (vectorof boolean?)
procedure
(list->gl-boolean-vector v ...) → gl-boolean-vector?
  v : (listof boolean?)
procedure
(gl-boolean-vector+ vec ...+) → gl-boolean-vector?
  vec : gl-boolean-vector?
procedure
(gl-boolean-vector- vec ...+) → gl-boolean-vector?
  vec : gl-boolean-vector?
procedure
(gl-boolean-vector* x vec) → gl-boolean-vector?
  x : real?
  vec : gl-boolean-vector?

Operations on vectors of boolean elements. The gl-boolean-vector+ and gl-boolean-vector- functions compute the element-by-element sum and difference of the given vectors, respectively. The gl-boolean-vector* function multiplies each element of vec by x.

procedure
(gl-vector-norm vec) → real?
vec : gl-vector?

Returns the square root of the sum of the squares of the elements of vec.

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1	Using Open GL
2	C-Style Open GL
3	Racket-Style Open GL
4	Open GL Vectors
5	Bitmaps
6	Initialization
	Index