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import $ivy.`com.lihaoyi::scalatags:0.6.7`
import scalatags.Text.implicits._
import scalatags.Text.svgTags._
import scalatags.Text.svgAttrs._
val svgWidth = 24
val svgHeight = 24
val numSections = 3
val bandWidth = 16
val bandGap = 8
val screwPitch = 2.0
def section(verticalOffset: Double) = {
val p = sectionLine(0).map{case (x, y) => (x, y + verticalOffset)}
val p1 = p.map{case (x, y) => (x, y - bandWidth/2)}
val p2 = p.map{case (x, y) => (x, y + bandWidth/2)}
(p1 ++ p2.reverse).map{case (x, y) => s"$x,$y"}.mkString(" ")
}
def sectionLine(startRadians: Double) = for{
y <- Seq(-svgHeight / 2, svgHeight / 2)
} yield {
val x = -y * svgWidth / svgHeight
(x.toInt + svgWidth/2, y.toInt * screwPitch + svgHeight/2)
}
val sections = for(i <- -numSections/2 to numSections/2) yield polyline(
points := section(i * (bandWidth + bandGap)),
fill := "#666",
)
val svgFrag = svg(
xmlns := "http://www.w3.org/2000/svg",
height := svgHeight,
width := svgWidth
)(
sections:_*
)
write.over(pwd/"logo.svg", "<!DOCTYPE html>" + svgFrag)
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