obs-studio/docs/sphinx/reference-libobs-graphics-v...

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ReStructuredText

4-Component Vector
==================
.. code:: cpp
#include <graphics/vec4.h>
.. type:: struct vec4
Two component vector structure.
.. member:: float vec4.x
X component
.. member:: float vec4.y
Y component
.. member:: float vec4.z
Z component
.. member:: float vec4.w
W component
.. member:: float vec4.ptr[4]
Unioned array of all components
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.. function:: void vec4_zero(struct vec4 *dst)
Zeroes a vector
:param dst: Destination
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.. function:: void vec4_set(struct vec4 *dst, float x, float y, float z, float w)
Sets the individual components of a 4-component vector.
:param dst: Destination
:param x: X component
:param y: Y component
:param z: Z component
:param w: W component
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.. function:: void vec4_copy(struct vec4 *dst, const struct vec4 *v)
Copies a vector
:param dst: Destination
:param v: Vector to copy
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.. function:: void vec4_from_vec3(struct vec4 *dst, const struct vec3 *v)
Creates a 4-component vector from a 3-component vector
:param dst: 4-component vector destination
:param v: 3-component vector
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.. function:: void vec4_add(struct vec4 *dst, const struct vec4 *v1, const struct vec4 *v2)
Adds two vectors
:param dst: Destination
:param v1: Vector 1
:param v2: Vector 2
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.. function:: void vec4_sub(struct vec4 *dst, const struct vec4 *v1, const struct vec4 *v2)
Subtracts two vectors
:param dst: Destination
:param v1: Vector being subtracted from
:param v2: Vector being subtracted
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.. function:: void vec4_mul(struct vec4 *dst, const struct vec4 *v1, const struct vec4 *v2)
Multiplies two vectors
:param dst: Destination
:param v1: Vector 1
:param v2: Vector 2
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.. function:: void vec4_div(struct vec4 *dst, const struct vec4 *v1, const struct vec4 *v2)
Divides two vectors
:param dst: Destination
:param v1: Dividend
:param v2: Divisor
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.. function:: void vec4_addf(struct vec4 *dst, const struct vec4 *v, float f)
Adds a floating point to all components
:param dst: Destination
:param dst: Vector
:param f: Floating point
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.. function:: void vec4_subf(struct vec4 *dst, const struct vec4 *v, float f)
Subtracts a floating point from all components
:param dst: Destination
:param v: Vector being subtracted from
:param f: Floating point being subtracted
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.. function:: void vec4_mulf(struct vec4 *dst, const struct vec4 *v, float f)
Multiplies a floating point with all components
:param dst: Destination
:param dst: Vector
:param f: Floating point
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.. function:: void vec4_divf(struct vec4 *dst, const struct vec4 *v, float f)
Divides a floating point from all components
:param dst: Destination
:param v: Vector (dividend)
:param f: Floating point (divisor)
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.. function:: void vec4_neg(struct vec4 *dst, const struct vec4 *v)
Negates a vector
:param dst: Destination
:param v: Vector to negate
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.. function:: float vec4_dot(const struct vec4 *v1, const struct vec4 *v2)
Performs a dot product between two vectors
:param v1: Vector 1
:param v2: Vector 2
:return: Result of the dot product
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.. function:: float vec4_len(const struct vec4 *v)
Gets the length of a vector
:param v: Vector
:return: The vector's length
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.. function:: float vec4_dist(const struct vec4 *v1, const struct vec4 *v2)
Gets the distance between two vectors
:param v1: Vector 1
:param v2: Vector 2
:return: Distance between the two vectors
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.. function:: void vec4_minf(struct vec4 *dst, const struct vec4 *v, float val)
Gets the minimum values between a vector's components and a floating point
:param dst: Destination
:param v: Vector
:param val: Floating point
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.. function:: void vec4_min(struct vec4 *dst, const struct vec4 *v, const struct vec4 *min_v)
Gets the minimum values between two vectors
:param dst: Destination
:param v: Vector 1
:param min_v: Vector 2
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.. function:: void vec4_maxf(struct vec4 *dst, const struct vec4 *v, float val)
Gets the maximum values between a vector's components and a floating point
:param dst: Destination
:param v: Vector
:param val: Floating point
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.. function:: void vec4_max(struct vec4 *dst, const struct vec4 *v, const struct vec4 *max_v)
Gets the maximum values between two vectors
:param dst: Destination
:param v: Vector 1
:param max_v: Vector 2
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.. function:: void vec4_abs(struct vec4 *dst, const struct vec4 *v)
Gets the absolute values of each component
:param dst: Destination
:param v: Vector
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.. function:: void vec4_floor(struct vec4 *dst, const struct vec4 *v)
Gets the floor values of each component
:param dst: Destination
:param v: Vector
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.. function:: void vec4_ceil(struct vec4 *dst, const struct vec4 *v)
Gets the ceiling values of each component
:param dst: Destination
:param v: Vector
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.. function:: int vec4_close(const struct vec4 *v1, const struct vec4 *v2, float epsilon)
Compares two vectors
:param v1: Vector 1
:param v2: Vector 2
:param epsilon: Maximum precision for comparison
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.. function:: void vec4_norm(struct vec4 *dst, const struct vec4 *v)
Normalizes a vector
:param dst: Destination
:param v: Vector to normalize
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.. function:: void vec4_transform(struct vec4 *dst, const struct vec4 *v, const struct matrix4 *m)
Transforms a vector
:param dst: Destination
:param v: Vector
:param m: Matrix