/
PlaneOutlineGeometry.js
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/
PlaneOutlineGeometry.js
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import BoundingSphere from './BoundingSphere.js';
import Cartesian3 from './Cartesian3.js';
import Check from './Check.js';
import ComponentDatatype from './ComponentDatatype.js';
import defined from './defined.js';
import Geometry from './Geometry.js';
import GeometryAttribute from './GeometryAttribute.js';
import GeometryAttributes from './GeometryAttributes.js';
import PrimitiveType from './PrimitiveType.js';
/**
* Describes geometry representing the outline of a plane centered at the origin, with a unit width and length.
*
* @alias PlaneOutlineGeometry
* @constructor
*
*/
function PlaneOutlineGeometry() {
this._workerName = 'createPlaneOutlineGeometry';
}
/**
* The number of elements used to pack the object into an array.
* @type {Number}
*/
PlaneOutlineGeometry.packedLength = 0;
/**
* Stores the provided instance into the provided array.
*
* @param {PlaneOutlineGeometry} value The value to pack.
* @param {Number[]} array The array to pack into.
*
* @returns {Number[]} The array that was packed into
*/
PlaneOutlineGeometry.pack = function(value, array) {
//>>includeStart('debug', pragmas.debug);
Check.defined('value', value);
Check.defined('array', array);
//>>includeEnd('debug');
return array;
};
/**
* Retrieves an instance from a packed array.
*
* @param {Number[]} array The packed array.
* @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
* @param {PlaneOutlineGeometry} [result] The object into which to store the result.
* @returns {PlaneOutlineGeometry} The modified result parameter or a new PlaneOutlineGeometry instance if one was not provided.
*/
PlaneOutlineGeometry.unpack = function(array, startingIndex, result) {
//>>includeStart('debug', pragmas.debug);
Check.defined('array', array);
//>>includeEnd('debug');
if (!defined(result)) {
return new PlaneOutlineGeometry();
}
return result;
};
var min = new Cartesian3(-0.5, -0.5, 0.0);
var max = new Cartesian3( 0.5, 0.5, 0.0);
/**
* Computes the geometric representation of an outline of a plane, including its vertices, indices, and a bounding sphere.
*
* @returns {Geometry|undefined} The computed vertices and indices.
*/
PlaneOutlineGeometry.createGeometry = function() {
var attributes = new GeometryAttributes();
var indices = new Uint16Array(4 * 2);
var positions = new Float64Array(4 * 3);
positions[0] = min.x;
positions[1] = min.y;
positions[2] = min.z;
positions[3] = max.x;
positions[4] = min.y;
positions[5] = min.z;
positions[6] = max.x;
positions[7] = max.y;
positions[8] = min.z;
positions[9] = min.x;
positions[10] = max.y;
positions[11] = min.z;
attributes.position = new GeometryAttribute({
componentDatatype : ComponentDatatype.DOUBLE,
componentsPerAttribute : 3,
values : positions
});
indices[0] = 0;
indices[1] = 1;
indices[2] = 1;
indices[3] = 2;
indices[4] = 2;
indices[5] = 3;
indices[6] = 3;
indices[7] = 0;
return new Geometry({
attributes : attributes,
indices : indices,
primitiveType : PrimitiveType.LINES,
boundingSphere : new BoundingSphere(Cartesian3.ZERO, Math.sqrt(2.0))
});
};
export default PlaneOutlineGeometry;