Compare partial folds

Compare partial folds — guided practice

Observe one pattern at several target settings.

Use A with 90-degree crease targets. Inspect Fold Percent 0, 50, 100. Record target angles from flat of 0, 45, 90 degrees. These are settings, not a claim of exact measured convergence.

1. 1. Reset the starting state

   Return to Folded view, click Reset and set Fold Percent 0. Leave default simulation settings unchanged. Rotate the view by dragging the background rather than grabbing a vertex.

   You should see: The starting sheet is flat and its boundary remains connected.

   A common initial state makes comparisons easier.

2. 2. Inspect the halfway target

   Enter 50 in Fold Percent or position the slider there. Let the image settle, then rotate to view the pleats from the side. Write target 45 degrees and describe the visible shape.

   You should see: The sheet moves toward a partly folded accordion.

   Half of a 90-degree target is 45 degrees; the number describes the requested bend from flat.

3. 3. Inspect the full target

   Set 100 and observe again. Record target 90 degrees. Keep the view angle similar when comparing; save a screenshot with the setting in its filename if convenient.

   You should see: The pleats become more pronounced while the same four panels remain.

   Changing viewpoint can imitate a geometry change, so comparable views matter.

4. 4. Record the method and uncertainty

   Write a three-line log for 0, 50, 100 with target angle and what you actually saw. Paper route: open the sheet flat, partly pleat it, then deepen the pleats; call the angles estimated unless measured.

   You should see: The log separates commanded targets from observed or hand-estimated shapes.

   A setting is not a measured guarantee of the resulting geometry.