eval node

src/nodes/Eval.ts

@@ -0,0 +1,80 @@
+import Node from './Node';
+import {
+    NumberVar,
+    StringVar,
+} from './io/AbstractIOSet';
+import get from 'lodash/get';
+
+const inputs = {
+    i0: {
+        type: 'Number',
+        default: 0,
+    } as NumberVar,
+    i1: {
+        type: 'Number',
+        default: 0,
+    } as NumberVar,
+    i2: {
+        type: 'Number',
+        default: 0,
+    } as NumberVar,
+    i3: {
+        type: 'Number',
+        default: 0,
+    } as NumberVar,
+    i4: {
+        type: 'Number',
+        default: 0,
+    } as NumberVar,
+    i5: {
+        type: 'Number',
+        default: 0,
+    } as NumberVar,
+    i6: {
+        type: 'Number',
+        default: 0,
+    } as NumberVar,
+    i7: {
+        type: 'Number',
+        default: 0,
+    } as NumberVar,
+    formula: {
+        type: 'String',
+        default: '',
+    } as StringVar
+};
+
+const outputs = {
+    result: {
+        type: 'Number'
+    } as NumberVar,
+}
+
+export default class NumberBinaryOperation extends Node<typeof inputs, typeof outputs> {
+    constructor() {
+        super('Eval', inputs, outputs);
+    }
+
+    interpolate() {
+        return this.in.formula.value.replace(/\{(\w+)\}/g, (_, paramName) => {
+            const value = get(this.in, [paramName, 'value']);
+            if (value) {
+                return value;
+            }
+            return '';
+        })
+    }
+
+    evaluate() {
+        try {
+            this.out.result.value = eval(this.interpolate());
+        } catch (e) {
+            console.error(e);
+        }
+    }
+
+    async _update() {
+        return this.evaluate();
+    }
+
+}

src/nodes/index.ts

@@ -29,3 +29,4 @@ export {default as Disable} from './Disable';
 export {default as Api} from './Api';
 export {default as BodySegmentation} from './AI/BodySegmentation';
 export {default as FaceFeaturePosition} from './AI/FaceFeaturePosition';
+export {default as Eval} from './Eval';