var $f89f15d7f52bce29$exports = require("./Point.main.js");
var $41b7691783731623$exports = require("./Rect.main.js");


function $parcel$export(e, n, v, s) {
  Object.defineProperty(e, n, {get: v, set: s, enumerable: true, configurable: true});
}

$parcel$export(module.exports, "OverscanManager", () => $191a033606d4fda1$export$4455ee6afb38dcbb);
/*
 * Copyright 2020 Adobe. All rights reserved.
 * This file is licensed to you 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 REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */ 

class $191a033606d4fda1$export$4455ee6afb38dcbb {
    setVisibleRect(rect) {
        let time = performance.now() - this.startTime;
        if (time < 500) {
            if (rect.x !== this.visibleRect.x && time > 0) this.velocity.x = (rect.x - this.visibleRect.x) / time;
            if (rect.y !== this.visibleRect.y && time > 0) this.velocity.y = (rect.y - this.visibleRect.y) / time;
        }
        this.startTime = performance.now();
        this.visibleRect = rect;
    }
    getOverscannedRect() {
        let overscanned = this.visibleRect.copy();
        let overscanY = this.visibleRect.height / 3;
        overscanned.height += overscanY;
        if (this.velocity.y < 0) overscanned.y -= overscanY;
        if (this.velocity.x !== 0) {
            let overscanX = this.visibleRect.width / 3;
            overscanned.width += overscanX;
            if (this.velocity.x < 0) overscanned.x -= overscanX;
        }
        return overscanned;
    }
    constructor(){
        this.startTime = 0;
        this.velocity = new (0, $f89f15d7f52bce29$exports.Point)(0, 0);
        this.visibleRect = new (0, $41b7691783731623$exports.Rect)();
    }
}


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