/**
* Cesium - https://github.com/CesiumGS/cesium
*
* Copyright 2011-2020 Cesium Contributors
*
* Licensed 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 CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Columbus View (Pat. Pend.)
*
* Portions licensed separately.
* See https://github.com/CesiumGS/cesium/blob/master/LICENSE.md for full licensing details.
*/
define(['./when-8d13db60', './Check-70bec281', './Math-61ede240', './Cartographic-f2a06374', './Cartesian2-16a61632', './BoundingSphere-d018a565', './Cartesian4-5af5bb24', './RuntimeError-ba10bc3e', './WebGLConstants-4c11ee5f', './ComponentDatatype-5862616f', './GeometryAttribute-1e248a71', './PrimitiveType-97893bc7', './FeatureDetection-7bd32c34', './Transforms-cd52cbaf', './buildModuleUrl-e7952659', './GeometryAttributes-aacecde6', './VertexFormat-fe4db402'], function (when, Check, _Math, Cartographic, Cartesian2, BoundingSphere, Cartesian4, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, PrimitiveType, FeatureDetection, Transforms, buildModuleUrl, GeometryAttributes, VertexFormat) { 'use strict';
/**
* Describes geometry representing a plane centered at the origin, with a unit width and length.
*
* @alias PlaneGeometry
* @constructor
*
* @param {Object} options Object with the following properties:
* @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
*
* @example
* var planeGeometry = new Cesium.PlaneGeometry({
* vertexFormat : Cesium.VertexFormat.POSITION_ONLY
* });
*/
function PlaneGeometry(options) {
options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
var vertexFormat = when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT);
this._vertexFormat = vertexFormat;
this._workerName = 'createPlaneGeometry';
}
/**
* The number of elements used to pack the object into an array.
* @type {Number}
*/
PlaneGeometry.packedLength = VertexFormat.VertexFormat.packedLength;
/**
* Stores the provided instance into the provided array.
*
* @param {PlaneGeometry} value The value to pack.
* @param {Number[]} array The array to pack into.
* @param {Number} [startingIndex=0] The index into the array at which to start packing the elements.
*
* @returns {Number[]} The array that was packed into
*/
PlaneGeometry.pack = function(value, array, startingIndex) {
//>>includeStart('debug', pragmas.debug);
Check.Check.typeOf.object('value', value);
Check.Check.defined('array', array);
//>>includeEnd('debug');
startingIndex = when.defaultValue(startingIndex, 0);
VertexFormat.VertexFormat.pack(value._vertexFormat, array, startingIndex);
return array;
};
var scratchVertexFormat = new VertexFormat.VertexFormat();
var scratchOptions = {
vertexFormat: scratchVertexFormat
};
/**
* 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 {PlaneGeometry} [result] The object into which to store the result.
* @returns {PlaneGeometry} The modified result parameter or a new PlaneGeometry instance if one was not provided.
*/
PlaneGeometry.unpack = function(array, startingIndex, result) {
//>>includeStart('debug', pragmas.debug);
Check.Check.defined('array', array);
//>>includeEnd('debug');
startingIndex = when.defaultValue(startingIndex, 0);
var vertexFormat = VertexFormat.VertexFormat.unpack(array, startingIndex, scratchVertexFormat);
if (!when.defined(result)) {
return new PlaneGeometry(scratchOptions);
}
result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
return result;
};
var min = new Cartographic.Cartesian3(-0.5, -0.5, 0.0);
var max = new Cartographic.Cartesian3( 0.5, 0.5, 0.0);
/**
* Computes the geometric representation of a plane, including its vertices, indices, and a bounding sphere.
*
* @param {PlaneGeometry} planeGeometry A description of the plane.
* @returns {Geometry|undefined} The computed vertices and indices.
*/
PlaneGeometry.createGeometry = function(planeGeometry) {
var vertexFormat = planeGeometry._vertexFormat;
var attributes = new GeometryAttributes.GeometryAttributes();
var indices;
var positions;
if (vertexFormat.position) {
// 4 corner points. Duplicated 3 times each for each incident edge/face.
positions = new Float64Array(4 * 3);
// +z face
positions[0] = min.x;
positions[1] = min.y;
positions[2] = 0.0;
positions[3] = max.x;
positions[4] = min.y;
positions[5] = 0.0;
positions[6] = max.x;
positions[7] = max.y;
positions[8] = 0.0;
positions[9] = min.x;
positions[10] = max.y;
positions[11] = 0.0;
attributes.position = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.DOUBLE,
componentsPerAttribute : 3,
values : positions
});
if (vertexFormat.normal) {
var normals = new Float32Array(4 * 3);
// +z face
normals[0] = 0.0;
normals[1] = 0.0;
normals[2] = 1.0;
normals[3] = 0.0;
normals[4] = 0.0;
normals[5] = 1.0;
normals[6] = 0.0;
normals[7] = 0.0;
normals[8] = 1.0;
normals[9] = 0.0;
normals[10] = 0.0;
normals[11] = 1.0;
attributes.normal = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
componentsPerAttribute : 3,
values : normals
});
}
if (vertexFormat.st) {
var texCoords = new Float32Array(4 * 2);
// +z face
texCoords[0] = 0.0;
texCoords[1] = 0.0;
texCoords[2] = 1.0;
texCoords[3] = 0.0;
texCoords[4] = 1.0;
texCoords[5] = 1.0;
texCoords[6] = 0.0;
texCoords[7] = 1.0;
attributes.st = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
componentsPerAttribute : 2,
values : texCoords
});
}
if (vertexFormat.tangent) {
var tangents = new Float32Array(4 * 3);
// +z face
tangents[0] = 1.0;
tangents[1] = 0.0;
tangents[2] = 0.0;
tangents[3] = 1.0;
tangents[4] = 0.0;
tangents[5] = 0.0;
tangents[6] = 1.0;
tangents[7] = 0.0;
tangents[8] = 0.0;
tangents[9] = 1.0;
tangents[10] = 0.0;
tangents[11] = 0.0;
attributes.tangent = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
componentsPerAttribute : 3,
values : tangents
});
}
if (vertexFormat.bitangent) {
var bitangents = new Float32Array(4 * 3);
// +z face
bitangents[0] = 0.0;
bitangents[1] = 1.0;
bitangents[2] = 0.0;
bitangents[3] = 0.0;
bitangents[4] = 1.0;
bitangents[5] = 0.0;
bitangents[6] = 0.0;
bitangents[7] = 1.0;
bitangents[8] = 0.0;
bitangents[9] = 0.0;
bitangents[10] = 1.0;
bitangents[11] = 0.0;
attributes.bitangent = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
componentsPerAttribute : 3,
values : bitangents
});
}
// 2 triangles
indices = new Uint16Array(2 * 3);
// +z face
indices[0] = 0;
indices[1] = 1;
indices[2] = 2;
indices[3] = 0;
indices[4] = 2;
indices[5] = 3;
}
return new GeometryAttribute.Geometry({
attributes : attributes,
indices : indices,
primitiveType : PrimitiveType.PrimitiveType.TRIANGLES,
boundingSphere : new BoundingSphere.BoundingSphere(Cartographic.Cartesian3.ZERO, Math.sqrt(2.0))
});
};
function createPlaneGeometry(planeGeometry, offset) {
if (when.defined(offset)) {
planeGeometry = PlaneGeometry.unpack(planeGeometry, offset);
}
return PlaneGeometry.createGeometry(planeGeometry);
}
return createPlaneGeometry;
});
