deeply compare old and new params

app/web/src/helpers/cadPackages/common.ts

@@ -12,7 +12,7 @@ export const stlToGeometry = (url) =>
 
 export interface RenderArgs {
   code: State['code']
-  parameters: any
+  parameters?: RawCustomizerParams
   settings: {
     camera: State['camera']
     viewerSize: State['viewerSize']

app/web/src/helpers/cadPackages/jsCad/jsCadController.ts

@@ -129,7 +129,7 @@ export const render: DefaultKernelExport['render'] = async ({
     scriptWorker.postMessage({ action: 'init', baseURI, alias: [] })
   }
 
-  if (parameters) {
+  if (parameters && currentParameters && JSON.stringify(parameters) !== JSON.stringify(currentParameters)) {
     // we are not evaluating code, but reacting to parameters change
     scriptWorker.postMessage({
       action: 'updateParams',

app/web/src/helpers/hooks/use3dViewerResize.ts

@@ -26,6 +26,7 @@ export const use3dViewerResize = () => {
             code: state.code,
             viewerSize: { width, height },
             camera: state.camera,
+            parameters: state.currentParameters,
           })
         }
       })

app/web/src/helpers/hooks/useIdeState.ts

@@ -183,7 +183,7 @@ export const useIdeState = (): [State, (actionOrThunk: any) => any] => {
             data: payload.objectData?.data,
           },
           customizerParams: payload.customizerParams || state.customizerParams,
-          currentParameters: payload.currentParameters,
+          currentParameters: Object.keys(payload.currentParameters).length ? payload.currentParameters : state.currentParameters,
           consoleMessages: payload.message
             ? [...state.consoleMessages, payload.message]
             : payload.message,
@@ -198,6 +198,7 @@ export const useIdeState = (): [State, (actionOrThunk: any) => any] => {
           isLoading: false,
         }
       case 'setCurrentCustomizerParams':
+        if (!Object.keys(payload).length) return state
         return {
           ...state,
           currentParameters: payload,