Impossible Shape

This is the most complex error related to fixing the dieline. The error means that Origami has to break the shape when folding it. Here is an example:

To fold along both crease lines in the example would bend the top part of the drawing. Origami does not support this, so it breaks the shape somewhere and reports the error.

This type of error is tricky to fix. One approach is to hide as many crease lines as possible, and then show them one by one until the error appears. There should be two conflicting crease lines somewhere. As soon as you see the error, you can decide how to change the crease lines so the shape is no longer impossible.

What to do?

• Hide all the crease lines.
• Show them one by one.
• Locate two conflicting crease lines.
• Fix the error.

Want More Hints?

• Almost Vertical/Horizontal — crease line is probably misaligned;
• Broken Shape — shape is broken apart when folding;
• Path Is Not Closed — the dieline needs a solid, continuous outline path;
• Crease Line In Main Outline — the main outline must be made of cuts;
• Intersecting Curved Cuts — it might not be easy;
• Empty Layout — why there is no dieline visible?
• Hanging Element — what if a path goes nowhere?
• Impossible Crease Line — a crease that shouldn't be;
• Inconsistent Crease Lines — similar crease lines must have same angles;
• Invalid Crease — crease lines have limitations;
• Overlapping Lines — cut and crease lines must not overlap, as well;
• Separate Element — the dieline should come in one piece;
• The Points Are Too Close — avoid crowded spaces;
• Z-Fighting — what to do with overlapping polygons.

There's more from the older folding engines:

• Intersecting Holes — holes must not overlap;
• Impossible Shape — some shapes simply don’t exist;
• Outside Hole — all holes must be inside the outline path;
• Misaligned Elements — ends must meet, perfectly;
• Elements Are Too Small — keep dieline paths simple;
• Triangulation Failed — Origami fails to make a 3D mesh of a dieline.

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