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<title>Code coverage report for ol/geom/circle.js</title>
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<h1>
<a href="../../index.html">all files</a> / <a href="index.html">ol/geom/</a> circle.js
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<div class='fl pad1y space-right2'>
<span class="strong">96.88% </span>
<span class="quiet">Statements</span>
<span class='fraction'>93/96</span>
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<span class="strong">90% </span>
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<span class='fraction'>18/20</span>
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<span class="strong">100% </span>
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<span class='fraction'>14/14</span>
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<span class="strong">96.88% </span>
<span class="quiet">Lines</span>
<span class='fraction'>93/96</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">goog.provide('ol.geom.Circle');
goog.require('goog.asserts');
goog.require('ol.extent');
goog.require('ol.geom.GeometryLayout');
goog.require('ol.geom.GeometryType');
goog.require('ol.geom.SimpleGeometry');
goog.require('ol.geom.flat.deflate');
goog.require('ol.proj');
/**
* @classdesc
* Circle geometry.
*
* @constructor
* @extends {ol.geom.SimpleGeometry}
* @param {ol.Coordinate} center Center.
* @param {number=} opt_radius Radius.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @api
*/
ol.geom.Circle = function(center, opt_radius, opt_layout) {
goog.base(this);
var radius = opt_radius ? opt_radius : 0;
this.setCenterAndRadius(center, radius, opt_layout);
};
goog.inherits(ol.geom.Circle, ol.geom.SimpleGeometry);
/**
* Make a complete copy of the geometry.
* @return {!ol.geom.Circle} Clone.
* @api
*/
ol.geom.Circle.prototype.clone = function() {
var circle = new ol.geom.Circle(null);
circle.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
return circle;
};
/**
* @inheritDoc
*/
ol.geom.Circle.prototype.closestPointXY =
function(x, y, closestPoint, minSquaredDistance) {
var flatCoordinates = this.flatCoordinates;
var dx = x - flatCoordinates[0];
var dy = y - flatCoordinates[1];
var squaredDistance = dx * dx + dy * dy;
<span class="missing-if-branch" title="else path not taken" >E</span>if (squaredDistance < minSquaredDistance) {
var i;
<span class="missing-if-branch" title="if path not taken" >I</span>if (squaredDistance === 0) {
<span class="cstat-no" title="statement not covered" > for (i = 0; i < this.stride; ++i) {</span>
<span class="cstat-no" title="statement not covered" > closestPoint[i] = flatCoordinates[i];</span>
}
} else {
var delta = this.getRadius() / Math.sqrt(squaredDistance);
closestPoint[0] = flatCoordinates[0] + delta * dx;
closestPoint[1] = flatCoordinates[1] + delta * dy;
for (i = 2; i < this.stride; ++i) {
closestPoint[i] = flatCoordinates[i];
}
}
closestPoint.length = this.stride;
return squaredDistance;
} else {
<span class="cstat-no" title="statement not covered" > return minSquaredDistance;</span>
}
};
/**
* @inheritDoc
*/
ol.geom.Circle.prototype.containsXY = function(x, y) {
var flatCoordinates = this.flatCoordinates;
var dx = x - flatCoordinates[0];
var dy = y - flatCoordinates[1];
return dx * dx + dy * dy <= this.getRadiusSquared_();
};
/**
* Return the center of the circle as {@link ol.Coordinate coordinate}.
* @return {ol.Coordinate} Center.
* @api
*/
ol.geom.Circle.prototype.getCenter = function() {
return this.flatCoordinates.slice(0, this.stride);
};
/**
* @inheritDoc
*/
ol.geom.Circle.prototype.computeExtent = function(extent) {
var flatCoordinates = this.flatCoordinates;
var radius = flatCoordinates[this.stride] - flatCoordinates[0];
return ol.extent.createOrUpdate(
flatCoordinates[0] - radius, flatCoordinates[1] - radius,
flatCoordinates[0] + radius, flatCoordinates[1] + radius,
extent);
};
/**
* Return the radius of the circle.
* @return {number} Radius.
* @api
*/
ol.geom.Circle.prototype.getRadius = function() {
return Math.sqrt(this.getRadiusSquared_());
};
/**
* @private
* @return {number} Radius squared.
*/
ol.geom.Circle.prototype.getRadiusSquared_ = function() {
var dx = this.flatCoordinates[this.stride] - this.flatCoordinates[0];
var dy = this.flatCoordinates[this.stride + 1] - this.flatCoordinates[1];
return dx * dx + dy * dy;
};
/**
* @inheritDoc
* @api
*/
ol.geom.Circle.prototype.getType = function() {
return ol.geom.GeometryType.CIRCLE;
};
/**
* @inheritDoc
* @api stable
*/
ol.geom.Circle.prototype.intersectsExtent = function(extent) {
var circleExtent = this.getExtent();
if (ol.extent.intersects(extent, circleExtent)) {
var center = this.getCenter();
if (extent[0] <= center[0] && extent[2] >= center[0]) {
return true;
}
if (extent[1] <= center[1] && extent[3] >= center[1]) {
return true;
}
return ol.extent.forEachCorner(extent, this.containsCoordinate, this);
}
return false;
};
/**
* Set the center of the circle as {@link ol.Coordinate coordinate}.
* @param {ol.Coordinate} center Center.
* @api
*/
ol.geom.Circle.prototype.setCenter = function(center) {
var stride = this.stride;
goog.asserts.assert(center.length == stride,
'center array length should match stride');
var radius = this.flatCoordinates[stride] - this.flatCoordinates[0];
var flatCoordinates = center.slice();
flatCoordinates[stride] = flatCoordinates[0] + radius;
var i;
for (i = 1; i < stride; ++i) {
flatCoordinates[stride + i] = center[i];
}
this.setFlatCoordinates(this.layout, flatCoordinates);
};
/**
* Set the center (as {@link ol.Coordinate coordinate}) and the radius (as
* number) of the circle.
* @param {ol.Coordinate} center Center.
* @param {number} radius Radius.
* @param {ol.geom.GeometryLayout=} opt_layout Layout.
* @api
*/
ol.geom.Circle.prototype.setCenterAndRadius =
function(center, radius, opt_layout) {
if (!center) {
this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
} else {
this.setLayout(opt_layout, center, 0);
if (!this.flatCoordinates) {
this.flatCoordinates = [];
}
/** @type {Array.<number>} */
var flatCoordinates = this.flatCoordinates;
var offset = ol.geom.flat.deflate.coordinate(
flatCoordinates, 0, center, this.stride);
flatCoordinates[offset++] = flatCoordinates[0] + radius;
var i, ii;
for (i = 1, ii = this.stride; i < ii; ++i) {
flatCoordinates[offset++] = flatCoordinates[i];
}
flatCoordinates.length = offset;
this.changed();
}
};
/**
* @param {ol.geom.GeometryLayout} layout Layout.
* @param {Array.<number>} flatCoordinates Flat coordinates.
*/
ol.geom.Circle.prototype.setFlatCoordinates =
function(layout, flatCoordinates) {
this.setFlatCoordinatesInternal(layout, flatCoordinates);
this.changed();
};
/**
* Set the radius of the circle. The radius is in the units of the projection.
* @param {number} radius Radius.
* @api
*/
ol.geom.Circle.prototype.setRadius = function(radius) {
goog.asserts.assert(this.flatCoordinates,
'truthy this.flatCoordinates expected');
this.flatCoordinates[this.stride] = this.flatCoordinates[0] + radius;
this.changed();
};
/**
* Transform each coordinate of the circle from one coordinate reference system
* to another. The geometry is modified in place.
* If you do not want the geometry modified in place, first clone() it and
* then use this function on the clone.
*
* Internally a circle is currently represented by two points: the center of
* the circle `[cx, cy]`, and the point to the right of the circle
* `[cx + r, cy]`. This `transform` function just transforms these two points.
* So the resulting geometry is also a circle, and that circle does not
* correspond to the shape that would be obtained by transforming every point
* of the original circle.
*
* @param {ol.proj.ProjectionLike} source The current projection. Can be a
* string identifier or a {@link ol.proj.Projection} object.
* @param {ol.proj.ProjectionLike} destination The desired projection. Can be a
* string identifier or a {@link ol.proj.Projection} object.
* @return {ol.geom.Circle} This geometry. Note that original geometry is
* modified in place.
* @function
* @api stable
*/
ol.geom.Circle.prototype.transform;
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