diff --git a/src/folk-space-projector.ts b/src/folk-space-projector.ts
new file mode 100644
index 0000000..f11878d
--- /dev/null
+++ b/src/folk-space-projector.ts
@@ -0,0 +1,107 @@
+import { css, PropertyValues } from '@lit/reactive-element';
+import { FolkBaseSet } from './folk-base-set';
+import { FolkShape } from './folk-shape';
+import { FolkSpreadsheet, FolkSpreadSheetCell, templateCells } from './folk-spreadsheet';
+import { DOMRectTransform } from './common/DOMRectTransform';
+
+FolkShape.define();
+FolkSpreadsheet.define();
+
+export class FolkSpaceProjector extends FolkBaseSet {
+  static override tagName = 'folk-space-projector';
+
+  static override styles = [
+    FolkBaseSet.styles,
+    css`
+      folk-shape {
+        pointer-events: auto;
+      }
+    `,
+  ];
+
+  #shape = document.createElement('folk-shape');
+  #spreadsheet = document.createElement('folk-spreadsheet');
+
+  override firstUpdated(changedProperties: PropertyValues<this>): void {
+    super.firstUpdated(changedProperties);
+
+    this.#shape.appendChild(this.#spreadsheet);
+
+    this.renderRoot.append(this.#shape);
+  }
+
+  connectedCallback(): void {
+    super.connectedCallback();
+    this.#spreadsheet.addEventListener('propagate', this.#onPropagate);
+  }
+
+  disconnectedCallback(): void {
+    super.disconnectedCallback();
+    this.#spreadsheet.removeEventListener('propagate', this.#onPropagate);
+  }
+
+  #onPropagate = (event: Event) => {
+    const cell = event.target as FolkSpreadSheetCell;
+
+    const shape = this.sourceElements
+      .values()
+      .drop(cell.row)
+      .find(() => true);
+
+    if (!(shape instanceof FolkShape)) return;
+
+    // infinite event loop
+    // switch (cell.column) {
+    //   case 'A': {
+    //     shape.x = cell.value;
+    //     return;
+    //   }
+    //   case 'B': {
+    //     shape.y = cell.value;
+    //     return;
+    //   }
+    //   case 'C': {
+    //     shape.width = cell.value;
+    //     return;
+    //   }
+    //   case 'D': {
+    //     shape.height = cell.value;
+    //     return;
+    //   }
+    //   case 'E': {
+    //     shape.rotation = cell.value;
+    //     return;
+    //   }
+    // }
+  };
+
+  override update(changedProperties: PropertyValues<this>): void {
+    super.update(changedProperties);
+
+    if (changedProperties.has('sourceElements')) {
+      const cells = templateCells(this.sourceElements.size, 5, {});
+      this.#spreadsheet.setHTMLUnsafe(cells);
+    }
+
+    if (this.sourcesMap.size !== this.sourceElements.size) return;
+
+    const rects = this.sourceRects;
+    for (let i = 0; i < rects.length; i += 1) {
+      const row = i + 1;
+      const rect = rects[i];
+      if (rect instanceof DOMRectTransform) {
+        const { x, y } = rect.toParentSpace(rect.topLeft);
+        this.#spreadsheet.getCell('A', row)!.expression = Math.round(x);
+        this.#spreadsheet.getCell('B', row)!.expression = Math.round(y);
+        this.#spreadsheet.getCell('C', row)!.expression = Math.round(rect.width);
+        this.#spreadsheet.getCell('D', row)!.expression = Math.round(rect.height);
+        this.#spreadsheet.getCell('E', row)!.expression = Math.round((rect.rotation * 180) / Math.PI);
+      } else {
+        this.#spreadsheet.getCell('A', row)!.expression = Math.round(rect.x);
+        this.#spreadsheet.getCell('B', row)!.expression = Math.round(rect.y);
+        this.#spreadsheet.getCell('C', row)!.expression = Math.round(rect.width);
+        this.#spreadsheet.getCell('D', row)!.expression = Math.round(rect.height);
+      }
+    }
+  }
+}