Here’s a quick post on how to create the crack in the office window tutorial. Basically, it’s a quick use of the straight line and bezier curve tool. Finally, move some nodes to create the desired effect.
Use the straight line and bezier curve tool to draw a spiky ended shape.
Add more spikes to it using the straight line tool.
Alternatively create a triangle and then add more nodes…
…to move into place with the edit paths by nodes tool.
Add a few more cracks before grouping the shapes (CTRL+G).
Duplicate the group and offset the position slightly (matching your scene’s light setup)…
… move the end nodes to line up with our initial shape group…
… and choose a lighter fill colour and set the alpha to ~50% (adjust to your window colour).
Place the lighter shape below the darker group.
Get the source art [ svg and pdf ] from here for free!
Combining the spiky shapes (Path/ Union) cleans it up a little bit more – as you won’t see the overlaps. Combine just two objects at a time in inkscape.
I hope this quick tutorial explains the creation of the crack well enough.
Get the source art (SVG file) of this tutorial for