getSceneIndicesForInterpolationInputRange.js
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
function getSceneIndicesForInterpolationInputRange(props) {
var scene = props.scene,
scenes = props.scenes;
var index = scene.index;
var lastSceneIndexInScenes = scenes.length - 1;
var isBack = !scenes[lastSceneIndexInScenes].isActive;
if (isBack) {
var currentSceneIndexInScenes = scenes.findIndex(function (item) {
return item === scene;
});
var targetSceneIndexInScenes = scenes.findIndex(function (item) {
return item.isActive;
});
var targetSceneIndex = scenes[targetSceneIndexInScenes].index;
var lastSceneIndex = scenes[lastSceneIndexInScenes].index;
if (index !== targetSceneIndex && currentSceneIndexInScenes === lastSceneIndexInScenes) {
return {
first: Math.min(targetSceneIndex, index - 1),
last: index + 1
};
} else if (index === targetSceneIndex && currentSceneIndexInScenes === targetSceneIndexInScenes) {
return {
first: index - 1,
last: Math.max(lastSceneIndex, index + 1)
};
} else if (index === targetSceneIndex || currentSceneIndexInScenes > targetSceneIndexInScenes) {
return null;
} else {
return { first: index - 1, last: index + 1 };
}
} else {
return { first: index - 1, last: index + 1 };
}
}
exports.default = getSceneIndicesForInterpolationInputRange;