Svg.filter.op.sample: def of gralha-svg-render@0.1.0.1
Import: import gralha-svg-render@0.1.0.1/svg.bend as Svg
Lines 4713-4728 of gralha-svg-render@0.1.0.1/svg.bend: https://jend.leeeet.dev/read.txt?path=gralha-svg-render@0.1.0.1/svg.bend&start_line=4713&end_line=4728

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U
import gralha-image@0.1.0.1/image.bend as Img

def filter.op.sample(op: FilterOp, +a: FilterInput, +b: FilterInput, +p: Point, +linear: Bool) -> Img.Color:
  match op:
    case FilterCopy{}: filter.input.color(a, p, linear)
    case FilterFlood{c}: c
    case FilterOffset{delta}: filter.input.color(a, point.sub(p, delta), linear)
    case FilterMatrix{rows}: filter.matrix(rows, filter.input.color(a, p, linear))
    case FilterTransfer{r, g, b, alpha}: filter.transfer(r, g, b, alpha, filter.input.color(a, p, linear))
    case FilterComposite{kind, k1, k2, k3, k4}: filter.composite(filter.input.color(a, p, linear), filter.input.color(b, p, linear), kind, k1, k2, k3, k4)
    case FilterBlend{kind}: filter.blend(filter.input.color(a, p, linear), filter.input.color(b, p, linear), kind)
    case FilterMerge{inputs}: filter.merge(inputs, p, linear, Img.clear())
    case FilterBlur{kernel}: filter.convolve(kernel, a, p, linear, Img.clear())
    case FilterConvolution{spec}: filter.convolution.sample(spec, a, p, linear)
    case FilterMorphology{dilate, radius, direction}:
      +n = radius
      +expand = dilate
      filter.morphology.sample(U32.to_nat((n * 2 + 1 : U32)), F32.neg(U32.to_f32(n)), direction, expand, a, p, linear, U.choose(Img.Color, expand, Img.clear(), Img.Color{1.0, 1.0, 1.0, 1.0}))

Uses (23):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.neg
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_f32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  https://jend.leeeet.dev/definition.txt?path=gralha-image@0.1.0.1/image.bend&name=Color
  https://jend.leeeet.dev/definition.txt?path=gralha-image@0.1.0.1/image.bend&name=clear
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=FilterInput
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=FilterOp
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=Point
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.blend
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.composite
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.convolution.sample
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.convolve
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.input.color
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.matrix
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.merge
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.morphology.sample
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=filter.transfer
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=point.sub
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=choose