Field 读取（field）自动生成

简述

从绑定到输入端口的 Field 中读取元素与尺寸。

方法

返回	函数	需要能力
`T`	at `(field: Rows<T>, index: Int)` +4	`field.read`
`T`	at_linear `(field: Rows<T>, position: Float)` +2	`field.read`
`Int`	count `(field: Rows<T>)` +2	`field.read`
`T`	fetch `(field: Rows<T>, index: Int)` +4	`field.read`
`Int`	isize `(field: Rows<T>)` +2	`field.read`
`T`	sample `(field: Rows<T>)` +2	`field.read`
`Vec2`	size `(field: Grid<T>)` +1	`field.read`

方法说明

at

at(field: Rows<T>, index: Int) -> T
at(field: Grid<T>, at: Vec2) -> T
at(field: Grid<T>, at: IVec2) -> T
at(field: Volume<T>, at: Vec3) -> T
at(field: Volume<T>, at: IVec3) -> T

The element at an address: the index, or the coordinates floored, clamped into the Field (NaN as zero). A memory reads as the steps have left it, and as it was bound in a scan’s initial value.

需要能力: field.read

at_linear

at_linear(field: Rows<T>, position: Float) -> T
at_linear(field: Grid<T>, position: Vec2) -> T
at_linear(field: Volume<T>, position: Vec3) -> T

The neighboring elements blended by the fractional position (element centers at .5), T of floats only; clamped at the edges.

需要能力: field.read

count

count(field: Rows<T>) -> Int
count(field: Grid<T>) -> Int
count(field: Volume<T>) -> Int

How many elements the Field has.

需要能力: field.read

fetch

fetch(field: Rows<T>, index: Int) -> T
fetch(field: Grid<T>, at: Vec2) -> T
fetch(field: Grid<T>, at: IVec2) -> T
fetch(field: Volume<T>, at: Vec3) -> T
fetch(field: Volume<T>, at: IVec3) -> T

Another name for at.

需要能力: field.read

isize

isize(field: Rows<T>) -> Int
isize(field: Grid<T>) -> IVec2
isize(field: Volume<T>) -> IVec3

The Field’s extent along each axis, as integers.

需要能力: field.read

sample

sample(field: Rows<T>) -> T
sample(field: Grid<T>) -> T
sample(field: Volume<T>) -> T

The input’s element at this element’s own coordinates, clamped into the input.

需要能力: field.read · 只能在 Kernel 主体中调用

size

size(field: Grid<T>) -> Vec2
size(field: Volume<T>) -> Vec3

The Field’s extent along each axis.

需要能力: field.read