Can I collide an enemy with a Canvas poly?

Hi,

I want to make a painting mechanic where the player would have to paint a canvas with color, but no enemy can collide on its path until the paint "dries".

I am thinking if I can use the Canvas polyline for that. Is there a way to use conditions to compare the Canvas polyline to a a Sprite collision poly?

The only way to this I know is using a tilemap with 1px tiles:

construct.net/en/forum/construct-2/how-do-i-18/simple-scorched-earth-worms-ga-129595