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