I created a canvas element where I can draw paths. There, I draw transparent paths and I "scratch" reveal the foreground. It works on both mobile and desktop.
android-holo-everywhere
apache-httpcomponents
evaluatejavascript
amazon-elastic-beanstalk
quaternions
pgmagick
kpt
share-open-graph
messagedialog
tqdm
lightspeed
terminate
inspection
terraform-provider-azure
react-d3-speedometer
graphileon
angularfire2
flume
vesa
biwavelet
hijri
aspose-cells
sqldf
quill
startapp
flutter-futurebuilder
checkov
android-source
letters-and-numbers
incron