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Tiles.scala
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Tiles.scala
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/*
* Copyright 2015 Creative Scala
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package doodle
package image
package examples
import cats.instances.all._
import cats.syntax.all._
import doodle.core._
import doodle.image.Image
import doodle.image.syntax.all._
import doodle.random._
import doodle.syntax.all._
object Tiles {
import PathElement._
// Experiments generating tiles
def randomColor(meanHue: Angle): Random[Color] =
for {
hue <- Random.normal(meanHue.toDegrees, 10.0) map (_.degrees)
sat <- Random.normal(0.8, 0.05)
light <- Random.normal(0.6, 0.05)
alpha <- Random.normal(0.5, 0.1)
} yield Color.hsla(hue, sat, light, alpha)
def randomTriangle(width: Double): Random[Image] = {
val coord = Random.natural(width.floor.toInt).map(_.toDouble)
val point = (coord, coord) mapN { (x, y) =>
Point.cartesian(x, y)
}
for {
pt1 <- point
pt2 <- point
pt3 <- point
} yield Image.closedPath(
Seq(moveTo(pt1), lineTo(pt2), lineTo(pt3), lineTo(pt1))
)
}
val leafGreen: Random[Color] = randomColor(80.degrees)
val aquamarine: Random[Color] = randomColor(160.degrees)
def randomTile(n: Int, color: Random[Color]): Random[Image] =
(1 to n).toList
.map { _ =>
(randomTriangle(100), color) mapN { _ fillColor _ }
}
.sequence
.map(images => images.foldLeft(Image.empty) { _ on _ })
def tile(baseN: Int, topN: Int): Random[Image] =
(randomTile(baseN, aquamarine), randomTile(topN, leafGreen)) mapN {
_ under _
}
def tileGrid(tile: Random[Image], sideLength: Int): Random[Image] = {
val row: Random[Image] =
(1 to sideLength).map(_ => tile).toList.sequence.map(_.allBeside)
val grid: Random[Image] =
(1 to sideLength).map(_ => row).toList.sequence.map(_.allAbove)
grid
}
def image: Image = {
tileGrid(tile(400, 20), 3).run
}
}