Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have an issue with perspectives. I am trying to draw lines onto this 3D rectangle in the mage below to create a block paving type effect. If you've never seen block paving, it's square blocks of granite.

Here is the image:

enter image description here

I've tried placing the lines in manually, but when I get to the middle, it seems off. I want some sort of symmetry on either side so the lines look like their going into the distance.

How is this possible?

share|improve this question

migrated from Nov 1 '11 at 23:14

This question came from our site for professional and enthusiast programmers.

GIMP has the perspective transform tool:

What you'd probably end up doing is creating a normal 'straight' grid of lines in a separate layer with a transparent background, and then using the perspective transform to make the grid lines converge. Squish it down vertically to fit the dimensions of your slab, and you should have the effect you're looking for.

share|improve this answer

Thought not precisely what you asked for, the Vanishing Point Tool is very helpful for this type of work. You may want to better familiarize yourself with this tool.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.