Draws several photos as mosaic / published by https://github.com/dacr/code-examples-manager #39882020-04be-4cd4-82e2-14efa7c5ec6b/72759b82ce8262d54e97a38133334daf982b95c7

vectorgraphics-doodle-photos-mosaic.sc

// summary : Draws several photos as mosaic
// keywords : scala, vector-graphics, doodle, photos
// publish : gist
// authors : David Crosson
// license : Apache License Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0.txt)
// id : 39882020-04be-4cd4-82e2-14efa7c5ec6b
// created-on : 2023-08-13T13:53:06.700685431Z
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala "3.4.2"
//> using dep "org.creativescala::doodle:0.22.0"
//> using dep "fr.janalyse::naturalsort:1.0.4"
// ---------------------
import doodle.core.*
import doodle.core.format.*
import doodle.syntax.*
import doodle.syntax.all.*
import doodle.syntax.transform.*
import doodle.image.*
import doodle.image.syntax.all.*
import doodle.java2d.*
import doodle.java2d.effect.*
import doodle.java2d.algebra.*
import cats.effect.unsafe.implicits.global
import cats.implicits.*
import cats.Semigroup

val filesJavaStream = {
  import java.nio.file.{Files, Path}
  val fromPath = Path.of(scala.util.Properties.envOrElse("PHOTOS_INTERNAL_DATA", "."))
  Files.find(
    fromPath,
    4,
    (path, attrs) => path.toString.contains("32.jpg")
  )
}

//val pictures = {
//  import java.util.stream.Collectors
//  import scala.jdk.CollectionConverters.*
//  filesJavaStream
//    .limit(10000)
//    .map(path => Picture.read(path.toFile))
//    .collect(Collectors.toList[Picture[Unit]])
//    .asScala
//    .toList
//}
val pictures = {
  import java.util.stream.Collectors
  import scala.jdk.CollectionConverters.*
  import java.nio.file.Path
  import fr.janalyse.tools.NaturalSort._
  filesJavaStream
    .limit(10)
    .collect(Collectors.toList[Path])
    .asScala
    .toList
    .sortBy(_.toFile.getName)
    .map(path => Picture.read(path.toFile))
}

val frame = Frame(
  size = Size.fitToPicture(5),
  title = "Photos",
  center = Center.atOrigin,
  background = None,
  redraw = Redraw.clearToBackground
)

//pictures
//  .grouped(140)
//  .map(_.reduce((a,b) => a.beside(b)))
//  .reduce((a,b) => b.below(a))
//  .scale(0.40, 0.40)
//  .drawWithFrame(frame)

def besizeNormalized(a: Picture[Unit], b: Picture[Unit]) = {
  for {
    asize       <- a.size
    (_, aheight) = asize
    bsize       <- b.size
    (_, bheight) = bsize
    ascale       = 32d / aheight
    bscale       = 32d / bheight
    an           = if (ascale == 1d) a else a.scale(ascale, ascale)
    bn           = if (bscale == 1d) b else b.scale(bscale, bscale)
  } yield an.beside(bn)
}

pictures
  .grouped(140)
  .map(
    _.reduce((a, b) =>
//      a.beside(b)
      for {
        asize       <- a.size
        bsize       <- b.size
        (_, aheight) = asize
        (_, bheight) = bsize
        ascale       = if (aheight == 0d) 1d else 32d / aheight
        bscale       = if (bheight == 0d) 1d else 32d / bheight
        an           = a.scale(ascale, ascale)
        bn           = b.scale(bscale, bscale)
      } yield {
        println(s"$asize $bsize : $ascale - $bscale")
        // an.beside(bn)
        a.beside(b)
      }
    )
  )
  .reduce((a, b) => b.below(a))
  .scale(0.40, 0.40)
  .drawWithFrame(frame)