NO_TITLE

Gnome::Graphene::N-Vec4§

Description§

A structure capable of holding a vector with four dimensions: x, y, z, and w.

The contents of the graphene_vec4_t structure are private and should never be accessed directly.

Class initialization§

new§

:native-object§

Create an object using a native object from an object of the same type found elsewhere. See also Gnome::N::TopLevelSupportClass.

multi method new ( N-Object() :$native-object! )

alloc§

Allocates a new graphene_vec4_t structure.

The contents of the returned structure are undefined.

Use .init() to initialize the vector.

method alloc ( --> Gnome::Graphene::Vec4 \)

Methods§

add§

Adds each component of the two given vectors.

method add ( CArray[N-Vec4] $b, CArray[N-Vec4] $res )

• $b; a graphene_vec4_t.
• $res; return location for the resulting vector.

divide§

Divides each component of the first operand $a by the corresponding component of the second operand $b, and places the results into the vector $res.

method divide ( CArray[N-Vec4] $b, CArray[N-Vec4] $res )

• $b; a graphene_vec4_t.
• $res; return location for the resulting vector.

dot§

Computes the dot product of the two given vectors.

method dot ( CArray[N-Vec4] $b --> Num )

• $b; a graphene_vec4_t.

Return value; the value of the dot product.

equal This function is not yet available§

Checks whether the two given graphene_vec4_t are equal.

method equal ( CArray[N-Vec4] $v2 )

• $v2; a graphene_vec4_t.

free§

Frees the resources allocated by $v

method free ( )

get-w§

Retrieves the value of the fourth component of the given graphene_vec4_t.

method get-w (--> Num )

Return value; the value of the fourth component.

get-x§

Retrieves the value of the first component of the given graphene_vec4_t.

method get-x (--> Num )

Return value; the value of the first component.

get-xy§

Creates a graphene_vec2_t that contains the first two components of the given graphene_vec4_t.

method get-xy ( CArray[N-Vec2] $res )

• $res; return location for a graphene_vec2_t.

get-xyz§

Creates a graphene_vec3_t that contains the first three components of the given graphene_vec4_t.

method get-xyz ( CArray[N-Vec3] $res )

• $res; return location for a graphene_vec3_t.

get-y§

Retrieves the value of the second component of the given graphene_vec4_t.

method get-y (--> Num )

Return value; the value of the second component.

get-z§

Retrieves the value of the third component of the given graphene_vec4_t.

method get-z (--> Num )

Return value; the value of the third component.

init§

Initializes a graphene_vec4_t using the given values.

This function can be called multiple times.

method init ( Num() $x, Num() $y, Num() $z, Num() $w --> CArray[N-Vec4] )

• $x; the X field of the vector.
• $y; the Y field of the vector.
• $z; the Z field of the vector.
• $w; the W field of the vector.

Return value; a pointer to the initialized vector.

init-from-float§

Initializes a graphene_vec4_t with the values inside the given array.

method init-from-float ( Num() $src --> CArray[N-Vec4] )

• $src; an array of four floating point values.

Return value; the initialized vector.

init-from-vec2§

Initializes a graphene_vec4_t using the components of a graphene_vec2_t and the values of $z and $w.

method init-from-vec2 ( CArray[N-Vec2] $src, Num() $z, Num() $w --> CArray[N-Vec4] )

• $src; a graphene_vec2_t.
• $z; the value for the third component of $v.
• $w; the value for the fourth component of $v.

Return value; the initialized vector.

init-from-vec3§

Initializes a graphene_vec4_t using the components of a graphene_vec3_t and the value of $w.

method init-from-vec3 ( CArray[N-Vec3] $src, Num() $w --> CArray[N-Vec4] )

• $src; a graphene_vec3_t.
• $w; the value for the fourth component of $v.

Return value; the initialized vector.

init-from-vec4§

Initializes a graphene_vec4_t using the components of another graphene_vec4_t.

method init-from-vec4 ( CArray[N-Vec4] $src --> CArray[N-Vec4] )

• $src; a graphene_vec4_t.

Return value; the initialized vector.

interpolate§

Linearly interpolates $v1 and $v2 using the given $factor.

method interpolate ( CArray[N-Vec4] $v2, Num() $factor, CArray[N-Vec4] $res )

• $v2; a graphene_vec4_t.
• $factor; the interpolation factor.
• $res; the interpolated vector.

length§

Computes the length of the given graphene_vec4_t.

method length (--> Num )

Return value; the length of the vector.

max§

Compares each component of the two given vectors and creates a vector that contains the maximum values.

method max ( CArray[N-Vec4] $b, CArray[N-Vec4] $res )

• $b; a graphene_vec4_t.
• $res; return location for the result vector.

min§

Compares each component of the two given vectors and creates a vector that contains the minimum values.

method min ( CArray[N-Vec4] $b, CArray[N-Vec4] $res )

• $b; a graphene_vec4_t.
• $res; return location for the result vector.

multiply§

Multiplies each component of the two given vectors.

method multiply ( CArray[N-Vec4] $b, CArray[N-Vec4] $res )

• $b; a graphene_vec4_t.
• $res; return location for the resulting vector.

near This function is not yet available§

Compares the two given graphene_vec4_t vectors and checks whether their values are within the given $epsilon.

method near ( CArray[N-Vec4] $v2, Num() $epsilon )

• $v2; a graphene_vec4_t.
• $epsilon; the threshold between the two vectors.

negate§

Negates the given graphene_vec4_t.

method negate ( CArray[N-Vec4] $res )

• $res; return location for the result vector.

normalize§

Normalizes the given graphene_vec4_t.

method normalize ( CArray[N-Vec4] $res )

• $res; return location for the normalized vector.

scale§

Multiplies all components of the given vector with the given scalar $factor.

method scale ( Num() $factor, CArray[N-Vec4] $res )

• $factor; the scalar factor.
• $res; return location for the result vector.

subtract§

Subtracts from each component of the first operand $a the corresponding component of the second operand $b and places each result into the components of $res.

method subtract ( CArray[N-Vec4] $b, CArray[N-Vec4] $res )

• $b; a graphene_vec4_t.
• $res; return location for the resulting vector.

to-float§

Stores the components of the given graphene_vec4_t into an array of floating point values.

method to-float ( Num() $dest )

• $dest; return location for an array of floating point values.

Functions§

one§

Retrieves a pointer to a graphene_vec4_t with all its components set to 1.

method one (--> CArray[N-Vec4] )

Return value; a constant vector.

w-axis§

Retrieves a pointer to a graphene_vec4_t with its components set to (0, 0, 0, 1).

method w-axis (--> CArray[N-Vec4] )

Return value; a constant vector.

x-axis§

Retrieves a pointer to a graphene_vec4_t with its components set to (1, 0, 0, 0).

method x-axis (--> CArray[N-Vec4] )

Return value; a constant vector.

y-axis§

Retrieves a pointer to a graphene_vec4_t with its components set to (0, 1, 0, 0).

method y-axis (--> CArray[N-Vec4] )

Return value; a constant vector.

z-axis§

Retrieves a pointer to a graphene_vec4_t with its components set to (0, 0, 1, 0).

method z-axis (--> CArray[N-Vec4] )

Return value; a constant vector.

zero§

Retrieves a pointer to a graphene_vec4_t with all its components set to 0.

method zero (--> CArray[N-Vec4] )

Return value; a constant vector.