Originally Posted by MTS
That's actually just an optical illusion in the Pineapple in the link above). Those corner triangles are all the exact same size.
It is a pineapple block, but a different version.
The diagram below is the standard pineapple, and the corners DO get larger. But you can see there are no points until the last round.
eta: And it looks like this is the same as the quilt photo above. The trick is just laying out the colors for each block.
Perhaps I'm misunderstanding what you said, but the triangles in the quilt pictured above that the OP is looking for definitely get larger. It's not an illusion.