Click the stage to activate the transition effect. To change the number of blades, adjust the slider. The transition animation is based on the aperture mechanism of a camera lens. The biggest challenge was making the blades overlap each other. I had to experiment quite a bit.
Thanks to @colinmacc and @kriblo for inspiring me with these great projects: Mechanical Iris Transition Demo by @colinmacc_test: https://scratch.mit.edu/projects/430848174 Mechanical Iris Transition Demo remix by @kriblo_test: https://scratch.mit.edu/projects/430962590/ Pen Iris by @kriblo_test: https://scratch.mit.edu/projects/430752012/ Thanks to @ghjklo_09 for bug spotting.
