Graphics related diagrams!
Anyone that has worked with shadowmap shadows will have experienced one of the many types of artifacts associated with this technque, most common of which being the dreaded ‘shadow acne’ or self-shadowing artifacts. I recently found myslef writing shadowing code from scratch, which forced me to revisit some of these issues and make some notes […]
[WIP article] In graphics, backface culling is the process by which the faces of a mesh that are facing away from a particular direction (e.g. camera) are culled in some form so that we avoid or reduce the GPU cost of processing them. Diagram showing: - detailed culling, i.e. test each face individually and see […]
The Function Graph object in the editor allows you to plot cartesian and polar graphs of arbitrary functions. Since the functions are authored in Javascript, it’s actually quite easy to add logic and more or less arbitrary code to them, i.e. we’re not restricted to stricly maths-like functions. One of the advantages of this is […]
I recently added support for convolution integrals on the Function Graph object in the editor. I thought I’d take the opportunity to write a quick introduction on the topic and present a few interactive diagrams. As with previous posts, this is not meant to be a complete teaching resource on convolution integrals. There are many […]
During the Christmas holidays I decided that I’ve had enough of the old editor UI and needed something more functional. I didn’t like the Property Panel taking up so much screen space or the fact that it kept changing size as the number of properties changed. The Object List was also quite bulky and I […]
I was having a conversation with a friend at work last week and I needed to refer to some my old notes. I generally keep an A4 pad to scribble notes, make calculations and draw diagrams for whatever I’m working on. It occurred to me that some of my more recent diagrams, which I’ve done […]
Last week was British Science Week and like every year my wife and I both volunteer to run an activity at the local Primary school. The theme this year was ‘Exploration & Discovery’ and I thought it would be fun to introduce Year 4 children (ages 8-9) to the basic principles of GPS. The focus […]
I got tired of looking at the old ‘programmer art’ UI in the Editor, so I spent a bit of time putting something a bit nicer together. I had a look at a couple of ready make JS libraries to use, but in the end I decided to build up the little UI library I […]
You can now edit a local copy of any diagram in any of the posts! There is an option available via the right click context menu. It works by saving a copy of the diagram to Local Storage and then opening it in the Editor!
Rendering engines often use cubemaps to store some form of lighting. There are a myriad of techniques that use them ranging from static to dynamic, direct and indirect, diffuse and specular lighting and so on. In this post we’ll try to illustrate some of the common steps in capturing, filtering and using cubemaps to achieve […]