Cuts and Creases
In the previous tutorial we created a solid-line rectangle that appears in Origami as a flat 3D rectangle.
Origami reads its layer in Adobe Illustrator and treats every solid line it finds there as a cut. You made a solid rectangle, so Origami cuts a solid rectangle for you, as if you wanted it cut from a piece of paper with scissors.
Now, what if we want to make a hole? Simply draw another rectangle inside of the main one. Here we've drawn two:
Here's what you see in Origami after reloading the dieline:
Note that you don't have to use a rectangle as the main outline. Any closed path should work just fine:
Origami needs a closed, continuous solid path around the shape to be able to make it 3D and fold it. It will display an error if it can't find that path.
Let's Fold It
Now you are ready to take the next step and fold something. Make a simple solid rectangle and draw a dashed line from one of its edges to another. Make sure the dashed line is straight and that both its ends are on the sides of the rectangle:
Double-click Origami's preview area, or click the "reload" button, to see the result:
Origami has folded the rectangle using the dashed line we made. A dashed line tells Origami to fold the shape. By default Origami folds to 90°, but you can change this by renaming the folding path. Let's name the dashed line from the picture above "45" and click the "reload" button again:
You can put text after the number, if you like. A path name like "45 my cool fold" works just fine.
Once again, make sure your crease lines are straight and both their ends are on the cutting lines, as otherwise you will get an error message.
Origami supports crease lines that cross. It is also OK to have a crease line made up of several segments. Just make sure the segments all are straight and that together they make a straight line with its ends touching the sides of the shape.
You may not have tried this yet: you can add as many other layers as you need for your artwork. Origami will include your artwork as a texture. Here is a small example:
Refresh the Origami preview to see that the gradient appears on the one of the shape's sides:
That's nearly all you need to know about cuts, creases and assigning artwork. You are almost up to speed with Origami!
Just two more things you need to know: