utils/helpers library

Copyright 2021 do9core

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.

Extensions

DoubleSum on Iterable<T>

Functions

calculateEndRotate(RouletteGroup group, int targetIndex, bool clockwise, int minRotateCircles, {double offset = 0}) → double

Calculate the end rotate value by targetIndex. The returned value contains the circles to roll. Make sure when you run this method the group has at least one RouletteUnit.

makeAnimation(AnimationController controller, double targetValue, Curve? curve, {double initialValue = 0}) → Animation<double>

Make Animation from controller to begin rotate effect. Rotate final position is targetValue.

Typedefs

DoubleSelector<T> = double Function(T source)

IndexBuilder<T> = T Function(int index)