@polygonjs/polygonjs
Version:
node-based WebGL 3D engine https://polygonjs.com
50 lines (49 loc) • 1.4 kB
JavaScript
;
import { BaseMethod } from "./_Base";
export class ObjectExpression extends BaseMethod {
static requiredArguments() {
return [
["string", "path to node"],
["string", "attribute name"],
["index", "object index"]
];
}
findDependency(args) {
return this.createDependencyFromIndexOrPath(args);
}
processArguments(args) {
return new Promise(async (resolve, reject) => {
if (args.length == 2 || args.length == 3) {
const indexOrPath = args[0];
const attribName = args[1];
const objectIndex = args[2] || 0;
let container = null;
try {
container = await this.getReferencedNodeContainer(indexOrPath);
} catch (e) {
reject(e);
}
if (container) {
const value = this._get_value_from_container(container, attribName, objectIndex);
resolve(value);
}
} else {
console.warn(`${args.length} given when 2 or 3 expected`);
resolve(0);
}
});
}
_get_value_from_container(container, attrib_name, point_index) {
const core_group = container.coreContent();
if (core_group) {
const coreObject = core_group.allCoreObjects()[point_index];
if (coreObject) {
return coreObject.attribValue(attrib_name);
} else {
return 0;
}
} else {
return null;
}
}
}