1 files changed, 18 insertions, 0 deletions
diff --git a/site/assets/cloud/src/getOptimalFontSize.js b/site/assets/cloud/src/getOptimalFontSize.js
new file mode 100644
index 00000000..02787516
--- /dev/null
+++ b/site/assets/cloud/src/getOptimalFontSize.js
@@ -0,0 +1,18 @@
+import {Vector3} from 'three';
+
+let objectWorldPosition = new Vector3();
+let cameraWorldPosition = new Vector3();
+let objectWorldScale = new Vector3();
+
+export default function(object, renderer, camera) {
+	if (renderer.domElement.width && renderer.domElement.height && object.material.map.textLines.length) {
+		let distance = object.getWorldPosition(objectWorldPosition).distanceTo(camera.getWorldPosition(cameraWorldPosition));
+		if (distance) {
+			let heightInPixels = object.getWorldScale(objectWorldScale).y * renderer.domElement.height / distance;
+			if (heightInPixels) {
+				return Math.round(heightInPixels / object.material.map.imageHeight);
+			}
+		}
+	}
+	return 0;
+}