A simple tap of the screen invokes a staggering amount of calculations. That screen is actually big tree of UI elements, and we need to navigate it quickly to find the right […]
A game of what’d they press? Hit testing in a 2d/3d layout
The bitwise complement, or not operator, is unsafe
I came upon a problem with bitwise complement (logical not): it isn’t safe. It’s nothing new, but it really registered while implementing the logical operations in Leaf. The issue is the result […]
Stuffing curves into boxes: calculating the bounds
Now that we’ve drawn beziers and arcs there’s only one piece missing in the vector API. We need to calculate the bounds of the curve: the minimum/maximum points where it will draw. […]
Rendering an SVG elliptical arc as bezier curves
I needed to draw ellipses and arcs. A vector API just wouldn’t be complete without them. Though opinions seem to differ as Apple’s Core Graphics lacks anything but an axis aligned circular […]
Porting Leaf from Linux to OSX
I recently ported Leaf from Linux to OSX. I figured it was about time to start making it cross-platform. The goal is to get it compiling useful libraries for iOS and Android […]
The smooth sexy curves of a bezier spline
I’ve been dreaming and coding curves lately. They play an integral role in a vector drawing API, which I’m writing for Fuse now. “Bezier curves” are so common we might think it’s […]
Ride the carousel of folly with a Python migration
I wanted to migrate my shelljob module from Python 2 to 3. I use this as part of the Leaf unit test setup. What I thought would be relatively straight forward has […]
Optional Types and Leaf: Removing automatic dereference
Optional values are one of the fundamental extrinsic types in Leaf, as are shared values. Originally optional values were used just like regular values, dereferenced automatically. I was always uncertain of that. […]
Smoothing 3d geometry, like a tunnel, with Catmull-Rom splines
An endless tunnel is the centerpiece of my game Radial Blitz. Flying smoothly through this tunnel was important to me. That required both a smooth tunnel and a smooth camera. In this […]
Glowing graphics for that futuristic sci-fi feeling
Glow is a relatively simple effect that gives life to the graphics in Radial Blitz. It blends well into the sci-fi theme. Creating the glow requires a glow map, a second world […]
Radial Blitz – A rough journey from new technology to app store release
Finally, I managed to release my 3d action game “Radial Blitz” on iTunes yesterday. I encountered many obstacles along the way, but am quite happy with the result. In the coming months […]
Are we forever cursed with buggy software?
Despite continuous advancements in programming it never feels like software is actually getting any better. It can certainly do more things, but it remains buggy and often unreliable. Is the source of […]
The unfortunate world of boilerplate code
Redundancy is one of the biggest sources of defects in programming. Boilerplate is highly redundant. While it may be easy to implement, and often necessary, it reduces code legibility and increases maintenance […]
A pattern bandage for messy virtual functions
In my previous article the mess of virtual functions, I show how easily they introduce bugs and propose language extensions to fix it. Several comments suggested an alternate solution with the “non-virtual […]
