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41 results

structure.ts

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  • marker-action.ts 1.50 KiB
    import { OrderedSet } from '../mol-data/int';
    
    /**
     * Copyright (c) 2018-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
     *
     * @author Alexander Rose <alexander.rose@weirdbyte.de>
     */
    
    export enum MarkerAction {
        Highlight,
        RemoveHighlight,
        Select,
        Deselect,
        Toggle,
        Clear
    }
    
    export function applyMarkerAction(array: Uint8Array, set: OrderedSet, action: MarkerAction) {
        let changed = false;
        OrderedSet.forEach(set, i => {
            let v = array[i];
            switch (action) {
                case MarkerAction.Highlight:
                    if (v % 2 === 0) {
                        v += 1;
                    }
                    break;
                case MarkerAction.RemoveHighlight:
                    if (v % 2 !== 0) {
                        v -= 1;
                    }
                    break;
                case MarkerAction.Select:
                    if (v < 2)
                        v += 2;
                    // v += 2
                    break;
                case MarkerAction.Deselect:
                    // if (v >= 2) {
                    //     v -= 2
                    // }
                    v = v % 2;
                    break;
                case MarkerAction.Toggle:
                    if (v >= 2) {
                        v -= 2;
                    }
                    else {
                        v += 2;
                    }
                    break;
                case MarkerAction.Clear:
                    v = 0;
                    break;
            }
            changed = array[i] !== v || changed;
            array[i] = v;
        })
        return changed;
    }