forked from Kitware/vtk-js
/
macro.js
692 lines (585 loc) · 19.4 KB
/
macro.js
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import vtk from './vtk';
let globalMTime = 0;
export function getCurrentGlobalMTime() {
return globalMTime;
}
// ----------------------------------------------------------------------------
// Loggins function calls
// ----------------------------------------------------------------------------
/* eslint-disable no-prototype-builtins */
const fakeConsole = {};
function noOp() {}
const consoleMethods = ['log', 'debug', 'info', 'warn', 'error', 'time', 'timeEnd', 'group', 'groupEnd'];
consoleMethods.forEach(methodName => (fakeConsole[methodName] = noOp));
global.console = (window.console.hasOwnProperty('log') ? window.console : fakeConsole);
const loggerFunctions = {
debug: noOp, // Don't print debug by default
error: global.console.error || noOp,
info: global.console.info || noOp,
log: global.console.log || noOp,
warn: global.console.warn || noOp,
};
export function setLoggerFunction(name, fn) {
if (loggerFunctions[name]) {
loggerFunctions[name] = fn || noOp;
}
}
export function vtkLogMacro(...args) {
loggerFunctions.log(...args);
}
export function vtkInfoMacro(...args) {
loggerFunctions.info(...args);
}
export function vtkDebugMacro(...args) {
loggerFunctions.debug(...args);
}
export function vtkErrorMacro(...args) {
loggerFunctions.error(...args);
}
export function vtkWarningMacro(...args) {
loggerFunctions.warn(...args);
}
// ----------------------------------------------------------------------------
// capitilze provided string
// ----------------------------------------------------------------------------
export function capitalize(str) {
return str.charAt(0).toUpperCase() + str.slice(1);
}
// ----------------------------------------------------------------------------
// Array helper
// ----------------------------------------------------------------------------
export function safeArrays(model) {
Object.keys(model).forEach((key) => {
if (Array.isArray(model[key])) {
model[key] = [].concat(model[key]);
}
});
}
// ----------------------------------------------------------------------------
export function enumToString(e, value) {
return Object.keys(e).find(key => e[key] === value);
}
export function getStateArrayMapFunc(item) {
if (item.isA) {
return item.getState();
}
return item;
}
// ----------------------------------------------------------------------------
// vtkObject: modified(), onModified(callback), delete()
// ----------------------------------------------------------------------------
export function obj(publicAPI = {}, model = {}) {
// Ensure each instance as a unique ref of array
safeArrays(model);
const callbacks = [];
model.mtime = (Number.isInteger(model.mtime) ? model.mtime : ++globalMTime);
model.classHierarchy = ['vtkObject'];
function off(index) {
callbacks[index] = null;
}
function on(index) {
function unsubscribe() {
off(index);
}
return Object.freeze({ unsubscribe });
}
publicAPI.isDeleted = () => !!model.deleted;
publicAPI.modified = () => {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return;
}
model.mtime = ++globalMTime;
callbacks.forEach(callback => callback && callback(publicAPI));
};
publicAPI.onModified = (callback) => {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return null;
}
const index = callbacks.length;
callbacks.push(callback);
return on(index);
};
publicAPI.getMTime = () => model.mtime;
publicAPI.isA = className => (model.classHierarchy.indexOf(className) !== -1);
publicAPI.getClassName = () => model.classHierarchy.slice(-1)[0];
publicAPI.set = (map = {}, noWarning = false, noFunction = false) => {
let ret = false;
Object.keys(map).forEach((name) => {
const fn = noFunction ? null : publicAPI[`set${capitalize(name)}`];
if (fn && Array.isArray(map[name])) {
ret = fn(...map[name]) || ret;
} else if (fn) {
ret = fn(map[name]) || ret;
} else {
// Set data on model directly
if (['mtime'].indexOf(name) === -1 && !noWarning) {
vtkWarningMacro(`Warning: Set value to model directly ${name}, ${map[name]}`);
}
model[name] = map[name];
ret = true;
}
});
return ret;
};
publicAPI.get = (...list) => {
if (!list.length) {
return model;
}
const subset = {};
list.forEach((name) => {
subset[name] = model[name];
});
return subset;
};
publicAPI.delete = () => {
Object.keys(model).forEach(field => delete model[field]);
callbacks.forEach((el, index) => off(index));
// Flag the instance being deleted
model.deleted = true;
};
// Add serialization support
publicAPI.getState = () => {
const jsonArchive = Object.assign({}, model, { vtkClass: publicAPI.getClassName() });
// Convert every vtkObject to its serializable form
Object.keys(jsonArchive).forEach((keyName) => {
if (jsonArchive[keyName] === null || jsonArchive[keyName] === undefined) {
delete jsonArchive[keyName];
} else if (jsonArchive[keyName].isA) {
jsonArchive[keyName] = jsonArchive[keyName].getState();
} else if (Array.isArray(jsonArchive[keyName])) {
jsonArchive[keyName] = jsonArchive[keyName].map(getStateArrayMapFunc);
}
});
// Sort resulting object by key name
const sortedObj = {};
Object.keys(jsonArchive).sort().forEach((name) => {
sortedObj[name] = jsonArchive[name];
});
// Remove mtime
if (sortedObj.mtime) {
delete sortedObj.mtime;
}
return sortedObj;
};
// Add shallowCopy(otherInstance) support
publicAPI.shallowCopy = (other, debug = false) => {
if (other.getClassName() !== publicAPI.getClassName()) {
throw new Error(`Cannot ShallowCopy ${other.getClassName()} into ${publicAPI.getClassName()}`);
}
const otherModel = other.get();
const keyList = Object.keys(model).sort();
const otherKeyList = Object.keys(otherModel).sort();
otherKeyList.forEach((key) => {
const keyIdx = keyList.indexOf(key);
if (keyIdx === -1) {
if (debug) {
vtkDebugMacro(`add ${key} in shallowCopy`);
}
} else {
keyList.splice(keyIdx, 1);
}
model[key] = otherModel[key];
});
if (keyList.length && debug) {
vtkDebugMacro(`Untouched keys: ${keyList.join(', ')}`);
}
publicAPI.modified();
};
}
// ----------------------------------------------------------------------------
// getXXX: add getters
// ----------------------------------------------------------------------------
export function get(publicAPI, model, fieldNames) {
fieldNames.forEach((field) => {
if (typeof field === 'object') {
publicAPI[`get${capitalize(field.name)}`] = () => model[field.name];
} else {
publicAPI[`get${capitalize(field)}`] = () => model[field];
}
});
}
// ----------------------------------------------------------------------------
// setXXX: add setters
// ----------------------------------------------------------------------------
const objectSetterMap = {
enum(publicAPI, model, field) {
return (value) => {
if (typeof value === 'string') {
if (field.enum[value] !== undefined) {
if (model[field.name] !== field.enum[value]) {
model[field.name] = field.enum[value];
publicAPI.modified();
return true;
}
return false;
}
vtkErrorMacro(`Set Enum with invalid argument ${field}, ${value}`);
throw new RangeError('Set Enum with invalid string argument');
}
if (typeof value === 'number') {
if (model[field.name] !== value) {
if (Object.keys(field.enum).map(key => field.enum[key]).indexOf(value) !== -1) {
model[field.name] = value;
publicAPI.modified();
return true;
}
vtkErrorMacro(`Set Enum outside numeric range ${field}, ${value}`);
throw new RangeError('Set Enum outside numeric range');
}
return false;
}
vtkErrorMacro(`Set Enum with invalid argument (String/Number) ${field}, ${value}`);
throw new TypeError('Set Enum with invalid argument (String/Number)');
};
},
};
function findSetter(field) {
if (typeof field === 'object') {
const fn = objectSetterMap[field.type];
if (fn) {
return (publicAPI, model) => fn(publicAPI, model, field);
}
vtkErrorMacro(`No setter for field ${field}`);
throw new TypeError('No setter for field');
}
return function getSetter(publicAPI, model) {
return function setter(value) {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return false;
}
if (model[field] !== value) {
model[field] = value;
publicAPI.modified();
return true;
}
return false;
};
};
}
export function set(publicAPI, model, fields) {
fields.forEach((field) => {
if (typeof field === 'object') {
publicAPI[`set${capitalize(field.name)}`] = findSetter(field)(publicAPI, model);
} else {
publicAPI[`set${capitalize(field)}`] = findSetter(field)(publicAPI, model);
}
});
}
// ----------------------------------------------------------------------------
// set/get XXX: add both setters and getters
// ----------------------------------------------------------------------------
export function setGet(publicAPI, model, fieldNames) {
get(publicAPI, model, fieldNames);
set(publicAPI, model, fieldNames);
}
// ----------------------------------------------------------------------------
// getXXX: add getters for object of type array
// ----------------------------------------------------------------------------
export function getArray(publicAPI, model, fieldNames) {
fieldNames.forEach((field) => {
publicAPI[`get${capitalize(field)}`] = () => [].concat(model[field]);
});
}
// ----------------------------------------------------------------------------
// setXXX: add setter for object of type array
// ----------------------------------------------------------------------------
export function setArray(publicAPI, model, fieldNames, size) {
fieldNames.forEach((field) => {
publicAPI[`set${capitalize(field)}`] = (...args) => {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return false;
}
let array = args;
// allow an array passed as a single arg.
if (array.length === 1 && Array.isArray(array[0])) {
array = array[0];
}
if (array.length !== size) {
throw new RangeError('Invalid number of values for array setter');
}
let changeDetected = false;
model[field].forEach((item, index) => {
if (item !== array[index]) {
if (changeDetected) {
return;
}
changeDetected = true;
}
});
if (changeDetected) {
model[field] = [].concat(array);
publicAPI.modified();
}
return true;
};
});
}
// ----------------------------------------------------------------------------
// set/get XXX: add setter and getter for object of type array
// ----------------------------------------------------------------------------
export function setGetArray(publicAPI, model, fieldNames, size) {
getArray(publicAPI, model, fieldNames);
setArray(publicAPI, model, fieldNames, size);
}
// ----------------------------------------------------------------------------
// vtkAlgorithm: setInputData(), setInputConnection(), getOutput(), getOutputPort()
// ----------------------------------------------------------------------------
export function algo(publicAPI, model, numberOfInputs, numberOfOutputs) {
if (model.inputData) {
model.inputData = model.inputData.map(vtk);
} else {
model.inputData = [];
}
if (model.inputConnection) {
model.inputConnection = model.inputConnection.map(vtk);
} else {
model.inputConnection = [];
}
if (model.output) {
model.output = model.output.map(vtk);
} else {
model.output = [];
}
if (model.inputArrayToProcess) {
model.inputArrayToProcess = model.inputArrayToProcess.map(vtk);
} else {
model.inputArrayToProcess = [];
}
// Methods
function setInputData(dataset, port = 0) {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return;
}
if (model.inputData[port] !== dataset || model.inputConnection[port]) {
model.inputData[port] = dataset;
model.inputConnection[port] = null;
if (publicAPI.modified) {
publicAPI.modified();
}
}
}
function getInputData(port = 0) {
if (model.inputConnection[port]) {
model.inputData[port] = model.inputConnection[port]();
}
return model.inputData[port];
}
function setInputConnection(outputPort, port = 0) {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return;
}
model.inputData[port] = null;
model.inputConnection[port] = outputPort;
}
function getOutputData(port = 0) {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return null;
}
if (publicAPI.shouldUpdate()) {
// console.log('update filter', publicAPI.getClassName());
publicAPI.update();
}
return model.output[port];
}
publicAPI.shouldUpdate = () => {
const localMTime = publicAPI.getMTime();
let count = numberOfOutputs;
while (count--) {
if (!model.output[count] || model.output[count].getMTime() < localMTime) {
return true;
}
}
count = numberOfInputs;
while (count--) {
if (model.inputConnection[count] && model.inputConnection[count].filter.shouldUpdate()) {
return true;
}
}
const minOutputMTime = Math.min(...model.output.filter(i => !!i).map(i => i.getMTime()));
count = numberOfInputs;
while (count--) {
if (publicAPI.getInputData(count) && publicAPI.getInputData(count).getMTime() > minOutputMTime) {
return true;
}
}
return false;
};
function getOutputPort(port = 0) {
const outputPortAccess = () => getOutputData(port);
// Add reference to filter
outputPortAccess.filter = publicAPI;
return outputPortAccess;
}
// Handle input if needed
if (numberOfInputs) {
// Reserve inputs
let count = numberOfInputs;
while (count--) {
model.inputData.push(null);
model.inputConnection.push(null);
}
// Expose public methods
publicAPI.setInputData = setInputData;
publicAPI.setInputConnection = setInputConnection;
publicAPI.getInputData = getInputData;
}
if (numberOfOutputs) {
publicAPI.getOutputData = getOutputData;
publicAPI.getOutputPort = getOutputPort;
}
publicAPI.update = () => {
const ins = [];
if (numberOfInputs) {
let count = 0;
while (count < numberOfInputs) {
ins[count] = publicAPI.getInputData(count);
count++;
}
}
if (publicAPI.shouldUpdate()) {
publicAPI.requestData(ins, model.output);
}
};
publicAPI.getNumberOfInputPorts = () => numberOfInputs;
publicAPI.getNumberOfOutputPorts = () => numberOfOutputs;
publicAPI.getInputArrayToProcess = (inputPort) => {
const arrayDesc = model.inputArrayToProcess[inputPort];
const ds = model.inputData[inputPort];
if (arrayDesc && ds) {
return ds[`get${arrayDesc.fieldAssociation}`]().getArray(arrayDesc.arrayName);
}
return null;
};
publicAPI.setInputArrayToProcess = (inputPort, arrayName, fieldAssociation, attributeType = 'Scalars') => {
while (model.inputArrayToProcess.length < inputPort) {
model.inputArrayToProcess.push(null);
}
model.inputArrayToProcess[inputPort] = { arrayName, fieldAssociation, attributeType };
};
}
// ----------------------------------------------------------------------------
// Event handling: onXXX(callback), invokeXXX(args...)
// ----------------------------------------------------------------------------
export function event(publicAPI, model, eventName) {
const callbacks = [];
const previousDelete = publicAPI.delete;
function off(index) {
callbacks[index] = null;
}
function on(index) {
function unsubscribe() {
off(index);
}
return Object.freeze({ unsubscribe });
}
publicAPI[`invoke${capitalize(eventName)}`] = (...args) => {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return;
}
callbacks.forEach(callback => callback && callback.apply(publicAPI, args));
};
publicAPI[`on${capitalize(eventName)}`] = (callback) => {
if (model.deleted) {
vtkErrorMacro('instance deleted - cannot call any method');
return null;
}
const index = callbacks.length;
callbacks.push(callback);
return on(index);
};
publicAPI.delete = () => {
previousDelete();
callbacks.forEach((el, index) => off(index));
};
}
// ----------------------------------------------------------------------------
// newInstance
// ----------------------------------------------------------------------------
export function newInstance(extend, className) {
const constructor = (initialValues = {}) => {
const model = {};
const publicAPI = {};
extend(publicAPI, model, initialValues);
return Object.freeze(publicAPI);
};
// Register constructor to factory
if (className) {
vtk.register(className, constructor);
}
return constructor;
}
// ----------------------------------------------------------------------------
// Chain function calls
// ----------------------------------------------------------------------------
export function chain(...fn) {
return (...args) => fn.filter(i => !!i).forEach(i => i(...args));
}
// ----------------------------------------------------------------------------
// Some utility methods for vtk objects
// ----------------------------------------------------------------------------
export function isVtkObject(instance) {
return instance && instance.isA && instance.isA('vtkObject');
}
export function traverseInstanceTree(instance, extractFunction, accumulator = [], visitedInstances = []) {
if (isVtkObject(instance)) {
if (visitedInstances.indexOf(instance) >= 0) {
// avoid cycles
return accumulator;
}
visitedInstances.push(instance);
const result = extractFunction(instance);
if (result !== undefined) {
accumulator.push(result);
}
// Now go through this instance's model
const model = instance.get();
Object.keys(model).forEach((key) => {
const modelObj = model[key];
if (Array.isArray(modelObj)) {
modelObj.forEach((subObj) => {
traverseInstanceTree(subObj, extractFunction, accumulator, visitedInstances);
});
} else {
traverseInstanceTree(modelObj, extractFunction, accumulator, visitedInstances);
}
});
}
return accumulator;
}
// ----------------------------------------------------------------------------
// Default export
// ----------------------------------------------------------------------------
export default {
algo,
capitalize,
chain,
enumToString,
event,
get,
getArray,
getCurrentGlobalMTime,
getStateArrayMapFunc,
isVtkObject,
newInstance,
obj,
safeArrays,
set,
setArray,
setGet,
setGetArray,
setLoggerFunction,
traverseInstanceTree,
vtkDebugMacro,
vtkErrorMacro,
vtkInfoMacro,
vtkLogMacro,
vtkWarningMacro,
};