259 lines
8.6 KiB
JavaScript
259 lines
8.6 KiB
JavaScript
/**
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* @license
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* Cesium - https://github.com/CesiumGS/cesium
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* Version 1.117
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*
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* Copyright 2011-2022 Cesium Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Columbus View (Pat. Pend.)
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*
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* Portions licensed separately.
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* See https://github.com/CesiumGS/cesium/blob/main/LICENSE.md for full licensing details.
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*/
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import {
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WebGLConstants_default
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} from "./chunk-PEABJLCK.js";
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import {
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defaultValue_default
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} from "./chunk-UCPPWV64.js";
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import {
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DeveloperError_default
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} from "./chunk-U4IMCOF5.js";
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import {
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defined_default
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} from "./chunk-BDUJXBVF.js";
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// packages/engine/Source/Core/ComponentDatatype.js
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var ComponentDatatype = {
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/**
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* 8-bit signed byte corresponding to <code>gl.BYTE</code> and the type
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* of an element in <code>Int8Array</code>.
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*
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* @type {number}
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* @constant
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*/
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BYTE: WebGLConstants_default.BYTE,
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/**
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* 8-bit unsigned byte corresponding to <code>UNSIGNED_BYTE</code> and the type
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* of an element in <code>Uint8Array</code>.
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*
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* @type {number}
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* @constant
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*/
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UNSIGNED_BYTE: WebGLConstants_default.UNSIGNED_BYTE,
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/**
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* 16-bit signed short corresponding to <code>SHORT</code> and the type
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* of an element in <code>Int16Array</code>.
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*
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* @type {number}
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* @constant
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*/
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SHORT: WebGLConstants_default.SHORT,
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/**
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* 16-bit unsigned short corresponding to <code>UNSIGNED_SHORT</code> and the type
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* of an element in <code>Uint16Array</code>.
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*
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* @type {number}
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* @constant
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*/
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UNSIGNED_SHORT: WebGLConstants_default.UNSIGNED_SHORT,
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/**
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* 32-bit signed int corresponding to <code>INT</code> and the type
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* of an element in <code>Int32Array</code>.
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*
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* @memberOf ComponentDatatype
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*
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* @type {number}
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* @constant
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*/
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INT: WebGLConstants_default.INT,
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/**
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* 32-bit unsigned int corresponding to <code>UNSIGNED_INT</code> and the type
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* of an element in <code>Uint32Array</code>.
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*
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* @memberOf ComponentDatatype
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*
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* @type {number}
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* @constant
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*/
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UNSIGNED_INT: WebGLConstants_default.UNSIGNED_INT,
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/**
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* 32-bit floating-point corresponding to <code>FLOAT</code> and the type
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* of an element in <code>Float32Array</code>.
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*
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* @type {number}
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* @constant
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*/
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FLOAT: WebGLConstants_default.FLOAT,
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/**
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* 64-bit floating-point corresponding to <code>gl.DOUBLE</code> (in Desktop OpenGL;
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* this is not supported in WebGL, and is emulated in Cesium via {@link GeometryPipeline.encodeAttribute})
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* and the type of an element in <code>Float64Array</code>.
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*
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* @memberOf ComponentDatatype
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*
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* @type {number}
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* @constant
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* @default 0x140A
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*/
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DOUBLE: WebGLConstants_default.DOUBLE
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};
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ComponentDatatype.getSizeInBytes = function(componentDatatype) {
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if (!defined_default(componentDatatype)) {
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throw new DeveloperError_default("value is required.");
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}
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switch (componentDatatype) {
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case ComponentDatatype.BYTE:
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return Int8Array.BYTES_PER_ELEMENT;
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case ComponentDatatype.UNSIGNED_BYTE:
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return Uint8Array.BYTES_PER_ELEMENT;
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case ComponentDatatype.SHORT:
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return Int16Array.BYTES_PER_ELEMENT;
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case ComponentDatatype.UNSIGNED_SHORT:
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return Uint16Array.BYTES_PER_ELEMENT;
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case ComponentDatatype.INT:
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return Int32Array.BYTES_PER_ELEMENT;
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case ComponentDatatype.UNSIGNED_INT:
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return Uint32Array.BYTES_PER_ELEMENT;
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case ComponentDatatype.FLOAT:
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return Float32Array.BYTES_PER_ELEMENT;
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case ComponentDatatype.DOUBLE:
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return Float64Array.BYTES_PER_ELEMENT;
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default:
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throw new DeveloperError_default("componentDatatype is not a valid value.");
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}
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};
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ComponentDatatype.fromTypedArray = function(array) {
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if (array instanceof Int8Array) {
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return ComponentDatatype.BYTE;
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}
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if (array instanceof Uint8Array) {
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return ComponentDatatype.UNSIGNED_BYTE;
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}
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if (array instanceof Int16Array) {
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return ComponentDatatype.SHORT;
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}
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if (array instanceof Uint16Array) {
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return ComponentDatatype.UNSIGNED_SHORT;
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}
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if (array instanceof Int32Array) {
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return ComponentDatatype.INT;
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}
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if (array instanceof Uint32Array) {
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return ComponentDatatype.UNSIGNED_INT;
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}
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if (array instanceof Float32Array) {
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return ComponentDatatype.FLOAT;
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}
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if (array instanceof Float64Array) {
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return ComponentDatatype.DOUBLE;
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}
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throw new DeveloperError_default(
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"array must be an Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, Uint32Array, Float32Array, or Float64Array."
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);
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};
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ComponentDatatype.validate = function(componentDatatype) {
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return defined_default(componentDatatype) && (componentDatatype === ComponentDatatype.BYTE || componentDatatype === ComponentDatatype.UNSIGNED_BYTE || componentDatatype === ComponentDatatype.SHORT || componentDatatype === ComponentDatatype.UNSIGNED_SHORT || componentDatatype === ComponentDatatype.INT || componentDatatype === ComponentDatatype.UNSIGNED_INT || componentDatatype === ComponentDatatype.FLOAT || componentDatatype === ComponentDatatype.DOUBLE);
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};
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ComponentDatatype.createTypedArray = function(componentDatatype, valuesOrLength) {
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if (!defined_default(componentDatatype)) {
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throw new DeveloperError_default("componentDatatype is required.");
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}
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if (!defined_default(valuesOrLength)) {
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throw new DeveloperError_default("valuesOrLength is required.");
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}
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switch (componentDatatype) {
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case ComponentDatatype.BYTE:
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return new Int8Array(valuesOrLength);
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case ComponentDatatype.UNSIGNED_BYTE:
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return new Uint8Array(valuesOrLength);
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case ComponentDatatype.SHORT:
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return new Int16Array(valuesOrLength);
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case ComponentDatatype.UNSIGNED_SHORT:
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return new Uint16Array(valuesOrLength);
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case ComponentDatatype.INT:
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return new Int32Array(valuesOrLength);
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case ComponentDatatype.UNSIGNED_INT:
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return new Uint32Array(valuesOrLength);
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case ComponentDatatype.FLOAT:
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return new Float32Array(valuesOrLength);
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case ComponentDatatype.DOUBLE:
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return new Float64Array(valuesOrLength);
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default:
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throw new DeveloperError_default("componentDatatype is not a valid value.");
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}
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};
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ComponentDatatype.createArrayBufferView = function(componentDatatype, buffer, byteOffset, length) {
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if (!defined_default(componentDatatype)) {
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throw new DeveloperError_default("componentDatatype is required.");
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}
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if (!defined_default(buffer)) {
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throw new DeveloperError_default("buffer is required.");
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}
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byteOffset = defaultValue_default(byteOffset, 0);
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length = defaultValue_default(
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length,
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(buffer.byteLength - byteOffset) / ComponentDatatype.getSizeInBytes(componentDatatype)
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);
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switch (componentDatatype) {
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case ComponentDatatype.BYTE:
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return new Int8Array(buffer, byteOffset, length);
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case ComponentDatatype.UNSIGNED_BYTE:
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return new Uint8Array(buffer, byteOffset, length);
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case ComponentDatatype.SHORT:
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return new Int16Array(buffer, byteOffset, length);
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case ComponentDatatype.UNSIGNED_SHORT:
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return new Uint16Array(buffer, byteOffset, length);
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case ComponentDatatype.INT:
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return new Int32Array(buffer, byteOffset, length);
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case ComponentDatatype.UNSIGNED_INT:
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return new Uint32Array(buffer, byteOffset, length);
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case ComponentDatatype.FLOAT:
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return new Float32Array(buffer, byteOffset, length);
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case ComponentDatatype.DOUBLE:
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return new Float64Array(buffer, byteOffset, length);
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default:
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throw new DeveloperError_default("componentDatatype is not a valid value.");
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}
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};
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ComponentDatatype.fromName = function(name) {
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switch (name) {
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case "BYTE":
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return ComponentDatatype.BYTE;
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case "UNSIGNED_BYTE":
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return ComponentDatatype.UNSIGNED_BYTE;
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case "SHORT":
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return ComponentDatatype.SHORT;
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case "UNSIGNED_SHORT":
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return ComponentDatatype.UNSIGNED_SHORT;
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case "INT":
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return ComponentDatatype.INT;
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case "UNSIGNED_INT":
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return ComponentDatatype.UNSIGNED_INT;
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case "FLOAT":
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return ComponentDatatype.FLOAT;
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case "DOUBLE":
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return ComponentDatatype.DOUBLE;
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default:
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throw new DeveloperError_default("name is not a valid value.");
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}
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};
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var ComponentDatatype_default = Object.freeze(ComponentDatatype);
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export {
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ComponentDatatype_default
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};
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