"Weak points" from texture? (i.e. wood splinters, tiles)

[jiggywatt]

Hi yall, I'm new to tyflow. 

Is there a way to use textures like height/alpha map to dictate the shapes of the fractures? i.e. splinters along wood grain or preserving tile shapes like in the image below (red lines)

[tyFlow]

You can use the tyCarve modifier to draw fractures manually in whatever shape you like.