doodle.reactor.examples.Easing.scala Maven / Gradle / Ivy
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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 reactor
package examples
import cats.effect.unsafe.implicits.global
import doodle.core.*
import doodle.image.Image
import doodle.java2d.*
object Easing {
def easeIn(t: Double): Double =
Math.pow(t, 2.0)
def easeOut(t: Double): Double =
1.0 - Math.pow(1.0 - t, 2.0)
def scale(min: Double, max: Double): Double => Double = {
val range = max - min
(x: Double) => min + (x * range)
}
val step = (easeIn _).andThen(scale(-300.0, 300.0))
val reactor =
Reactor
.linearRamp()
.withRender(t =>
Image.circle(5.0).fillColor(Color.seaGreen).at(step(t), 0.0)
)
def go() =
reactor.run(Frame.default.withSize(600, 600))
}