fix frame api

src/kiri/mode/cam/prepare.js

@@ -870,10 +870,13 @@ export async function prepare_one(widget, settings, print, firstPoint, update) {
         // we're coming from another widget. offset compensated below
         printPoint = firstPoint;
         // console.log('coming from another widget', { printPoint });
-    } else {
+    } else if (center) {
         // we're the first widget output. offset is center
         printPoint = origin.clone().move({ x: center.x, y: center.y });
         // console.log('first widget output', { printPoint });
+    } else {
+        console.log({ missing_center_using_origin: origin });
+        printPoint = origin.clone();
     }
 
     let ops = {

src/kiri/mode/cam/topo3.js

@@ -241,7 +241,7 @@ export class Topo {
                     }
                 }
                 // raise output points when inside tab boundaries
-                if (!inside && tabsOn && clipTab.length)
+                if (tabsOn && clipTab.length)
                 for (let poly of lines) {
                     for (let p of poly.points) {
                         for (let clip of clipTab) {