59 lines
1.5 KiB
JavaScript
59 lines
1.5 KiB
JavaScript
goog.provide('ol.Extent');
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goog.require('ol.Rectangle');
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goog.require('ol.TransformFunction');
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/**
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* @constructor
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* @extends {ol.Rectangle}
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* @param {number} minX Minimum X.
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* @param {number} minY Minimum Y.
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* @param {number} maxX Maximum X.
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* @param {number} maxY Maximum Y.
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*/
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ol.Extent = function(minX, minY, maxX, maxY) {
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goog.base(this, minX, minY, maxX, maxY);
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};
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goog.inherits(ol.Extent, ol.Rectangle);
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/**
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* @param {...goog.math.Coordinate} var_args Coordinates.
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* @return {!ol.Extent} Boundin extent.
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*/
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ol.Extent.boundingExtent = function(var_args) {
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var coordinate0 = arguments[0];
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var extent = new ol.Extent(coordinate0.x, coordinate0.y,
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coordinate0.x, coordinate0.y);
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var i;
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for (i = 1; i < arguments.length; ++i) {
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var coordinate = arguments[i];
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extent.minX = Math.min(extent.minX, coordinate.x);
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extent.minY = Math.min(extent.minY, coordinate.y);
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extent.maxX = Math.max(extent.maxX, coordinate.x);
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extent.maxY = Math.max(extent.maxY, coordinate.y);
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}
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return extent;
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};
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/**
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* @return {ol.Extent} Extent.
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*/
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ol.Extent.prototype.clone = function() {
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return new ol.Extent(this.minX, this.minY, this.maxX, this.maxY);
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};
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/**
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* @param {ol.TransformFunction} transform Transform.
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* @return {ol.Extent} Extent.
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*/
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ol.Extent.prototype.transform = function(transform) {
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var min = transform(new goog.math.Coordinate(this.minX, this.minY));
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var max = transform(new goog.math.Coordinate(this.maxX, this.maxY));
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return new ol.Extent(min.x, min.y, max.x, max.y);
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};
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