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ColorsAndShapes.scala
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ColorsAndShapes.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 doodle.core._
import doodle.syntax.all._
object ColorsAndShapes {
def size(n: Int): Double =
50.0 + 12 * n
def fading(n: Int): Color =
Color.blue fadeOut (1 - n / 20.0).normalized
def spinning(n: Int): Color =
Color.blue desaturate 0.5.normalized spin (n * 30).degrees
def circle(n: Int): Image =
Image.circle(size(n))
def square(n: Int): Image =
Image.rectangle(2 * size(n), 2 * size(n))
def triangle(n: Int): Image =
Image.triangle(2 * size(n), 2 * size(n))
def colored(shape: Int => Image, color: Int => Color): Int => Image =
(n: Int) => shape(n) strokeWidth 10 strokeColor color(n)
def concentricShapes(count: Int, singleShape: Int => Image): Image =
count match {
case 0 => Image.empty
case n => singleShape(n) on concentricShapes(n - 1, singleShape)
}
val spacer = Image.square(10).noFill.noStroke
def image =
concentricShapes(10, colored(circle, spinning)) beside
spacer beside
concentricShapes(10, colored(triangle, fading)) beside
spacer beside
concentricShapes(10, colored(square, spinning))
}