I’m working on the Mac version of the Linkage app and I’ve been having some trouble with panning and zooming. When a single finger is slide along the top of the Apple Magic Mouse, the software gets a “scrollWheel” event. It’s a Magic Mouse so there are values…
Continue readingThe documentation says something to the effect of “onMeasure() is called to determine the size of the view.” and “onLayout() is called to set the size and position of the child views.” The problem is that onMeasure() is called before onLayput() and never after it. How can a…
Continue readingHave you used the Linkage software? Was it useful but you didn’t think it was worth it to send me a pile of money? Please consider a simple $1 donation on Patreon (https://www.patreon.com/rectorsquid). It won’t add up to more than $12 per year but it will still be…
Continue readingI had some C++ code that would determine if any element in a list was selected. A “selected” element is one that has a boolean variable “isSelected” set to be true: bool bLinkSelected = false; POSITION Position = pConnector->GetLinkList()->GetHeadPosition(); while( Position != 0 ) { CLink* pLink =…
Continue readingA Linkage document file contains coordinates based on there being 96.0 pixels per inch. If the software is rendering onto an old monitor then the document units are scaled based on the amount of zoom in effect and then they are translated to different coordinates if the document…
Continue readingI am porting the Linkage program to the Mac in Swift, as I’ve mentioned in other posts. I’m trying to be “Swifty” because a language should be taken advantage of and because I like to learn new programming paradigms (or simply styles since this might not be a…
Continue readingI implemented a linked list data structure in Swift. It seemed like a good idea for porting the Linkage source code from C++ to Swift but I’ve also read that using a linked list is a terrible idea. This is a bit of a rant on that subject……
Continue readingIn the Swift programing language, there are two ways to declare a variable; You can declare a variable as immutable using a syntax like let x = 1.0 or you can declare it mutable using var x = 1.0. There are some weirdnesses to the mutability of objects…
Continue readingIn the image above, there is a complexity that cannot be handled by the Linkage simulator. Although it might not look complicated, the lack of kinematic chain simulation in the software makes this impossible to simulate. The Linkage software, as I have written about on numerous occasions, uses…
Continue readingA year ago, I wrote code to generate an optimized route between a set of locations. The algorithm was based on the third of four obvious algorithms that solve the traveling salesman problem. The traveling salesman problem is the problem of getting the shortest route between a set…
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