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3-Component Vector
==================
.. code:: cpp
#include <graphics/vec3.h>
.. struct:: vec3
Two component vector structure.
.. member:: float vec3.x
X component
.. member:: float vec3.y
Y component
.. member:: float vec3.z
Z component
.. member:: float vec3.ptr[3]
Unioned array of all components
---------------------
.. function:: void vec3_zero(struct vec3 *dst)
Zeroes a vector
:param dst: Destination
---------------------
.. function:: void vec3_set(struct vec3 *dst, float x, float y)
Sets the individual components of a 3-component vector.
:param dst: Destination
:param x: X component
:param y: Y component
:param y: Z component
---------------------
.. function:: void vec3_copy(struct vec3 *dst, const struct vec3 *v)
Copies a vector
:param dst: Destination
:param v: Vector to copy
---------------------
.. function:: void vec3_from_vec4(struct vec3 *dst, const struct vec4 *v)
Creates a 3-component vector from a 4-component vector
:param dst: 3-component vector destination
:param v: 4-component vector
---------------------
.. function:: void vec3_add(struct vec3 *dst, const struct vec3 *v1, const struct vec3 *v2)
Adds two vectors
:param dst: Destination
:param v1: Vector 1
:param v2: Vector 2
---------------------
.. function:: void vec3_sub(struct vec3 *dst, const struct vec3 *v1, const struct vec3 *v2)
Subtracts two vectors
:param dst: Destination
:param v1: Vector being subtracted from
:param v2: Vector being subtracted
---------------------
.. function:: void vec3_mul(struct vec3 *dst, const struct vec3 *v1, const struct vec3 *v2)
Multiplies two vectors
:param dst: Destination
:param v1: Vector 1
:param v2: Vector 2
---------------------
.. function:: void vec3_div(struct vec3 *dst, const struct vec3 *v1, const struct vec3 *v2)
Divides two vectors
:param dst: Destination
:param v1: Dividend
:param v2: Divisor
---------------------
.. function:: void vec3_addf(struct vec3 *dst, const struct vec3 *v, float f)
Adds a floating point to all components
:param dst: Destination
:param dst: Vector
:param f: Floating point
---------------------
.. function:: void vec3_subf(struct vec3 *dst, const struct vec3 *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
---------------------
.. function:: void vec3_mulf(struct vec3 *dst, const struct vec3 *v, float f)
Multiplies a floating point with all components
:param dst: Destination
:param dst: Vector
:param f: Floating point
---------------------
.. function:: void vec3_divf(struct vec3 *dst, const struct vec3 *v, float f)
Divides a floating point from all components
:param dst: Destination
:param v: Vector (dividend)
:param f: Floating point (divisor)
---------------------
.. function:: void vec3_neg(struct vec3 *dst, const struct vec3 *v)
Negates a vector
:param dst: Destination
:param v: Vector to negate
---------------------
.. function:: float vec3_dot(const struct vec3 *v1, const struct vec3 *v2)
Performs a dot product between two vectors
:param v1: Vector 1
:param v2: Vector 2
:return: Result of the dot product
---------------------
.. function:: void vec3_cross(struct vec3 *dst, const struct vec3 *v1, const struct vec3 *v2)
Performs a cross product between two vectors
:param dst: Destination
:param v1: Vector 1
:param v2: Vector 2
---------------------
.. function:: float vec3_len(const struct vec3 *v)
Gets the length of a vector
:param v: Vector
:return: The vector's length
---------------------
.. function:: float vec3_dist(const struct vec3 *v1, const struct vec3 *v2)
Gets the distance between two vectors
:param v1: Vector 1
:param v2: Vector 2
:return: Distance between the two vectors
---------------------
.. function:: void vec3_minf(struct vec3 *dst, const struct vec3 *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
---------------------
.. function:: void vec3_min(struct vec3 *dst, const struct vec3 *v, const struct vec3 *min_v)
Gets the minimum values between two vectors
:param dst: Destination
:param v: Vector 1
:param min_v: Vector 2
---------------------
.. function:: void vec3_maxf(struct vec3 *dst, const struct vec3 *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
---------------------
.. function:: void vec3_max(struct vec3 *dst, const struct vec3 *v, const struct vec3 *max_v)
Gets the maximum values between two vectors
:param dst: Destination
:param v: Vector 1
:param max_v: Vector 2
---------------------
.. function:: void vec3_abs(struct vec3 *dst, const struct vec3 *v)
Gets the absolute values of each component
:param dst: Destination
:param v: Vector
---------------------
.. function:: void vec3_floor(struct vec3 *dst, const struct vec3 *v)
Gets the floor values of each component
:param dst: Destination
:param v: Vector
---------------------
.. function:: void vec3_ceil(struct vec3 *dst, const struct vec3 *v)
Gets the ceiling values of each component
:param dst: Destination
:param v: Vector
---------------------
.. function:: int vec3_close(const struct vec3 *v1, const struct vec3 *v2, float epsilon)
Compares two vectors
:param v1: Vector 1
:param v2: Vector 2
:param epsilon: Maximum precision for comparison
---------------------
.. function:: void vec3_norm(struct vec3 *dst, const struct vec3 *v)
Normalizes a vector
:param dst: Destination
:param v: Vector to normalize
---------------------
.. function:: void vec3_transform(struct vec3 *dst, const struct vec3 *v, const struct matrix4 *m)
Transforms a vector
:param dst: Destination
:param v: Vector
:param m: Matrix
---------------------
.. function:: void vec3_rotate(struct vec3 *dst, const struct vec3 *v, const struct matrix3 *m)
Rotates a vector
:param dst: Destination
:param v: Vector
:param m: Matrix
---------------------
.. function:: void vec3_rand(struct vec3 *dst, int positive_only)
Generates a random vector
:param dst: Destination
:param positive_only: *true* if positive only, *false* otherwise
|
