This Inkscape extension transforms an object along the x-axis. The bounding box remains unchanged. Points near the center of the object move to create the illusion of a curved surface. Points move left, if you choose an exponent > 1, and right if the exponent is < 1. An exponent of 1.0 does exactly nothing. This can be used in combination with the bend path effect to create a cone projection that retains aspect ratio. Idea from Simon Budig while preparing for the lampshade workshop.