This post is just here to hold the sources for the latest version of the image preview JavaScript code. I moved the code out of some generic files that hold a bunch of other JavaScript code and CSS data, and into files specific to the image preview page….
Continue readingBack in this post, I wrote about previewing a file before uploading it. I had taken someone else’s concept and did my own version of it to suit my own needs. Recently, someone asked me how to clear the file selection. I’m not sure if that what was…
Continue readingA long time ago, my brilliant daughter was in the Gifted-and-Talented (G.T.) program at her school. She had an assignment to find an equation for each number from 0 to 50 with the rules being that the digit 4 must appear 4 times in the equation, and that…
Continue readingThe linkage program has an interesting problem; any one simulation step starts with the mechanism in its original position and then processes the inputs to generate a new position for every link. Actuator lengths are also changed to their new lengths at the same time. What this means…
Continue readingI updated the documentation but never posted about the new image export functionality in the Linkage program. I added the ability to select the image size from a set of four useful sizes. I also added options for scaling; to make things like lines, connector circles, and text;…
Continue readingWith gears somewhat working in the Linkage program (there is a small glitch to fix still), I need to figure out what to do next. I have a list of user requests as well as a list of things that I want. I’m not sure what to do…
Continue readingI fixed the one problem that I had with the app where I had allowed it to use landscape orientation. When the user rotated the device, the screen would go blank and the on-screen-keyboard would disappear. Rotating it back didn’t restore the keyboard making the app useless. Now…
Continue readingI just finished writing my first Swift app for iOS. It’s the very common tutorial app “Tip Calculator” which accepts a bill amount and then shows a tip and total based on the selected tip percentage. The tutorial is from the book iOS for Programmers: An App-Driven Approach…
Continue readingI finally figured out how to change that Box Transport Mechanism from my previous post into a Linkage mechanism that works. All I needed to do was get rid of one of the links and then add a link to do the same thing using connectors that are…
Continue readingThe Stephenson Value mechanism on a locomotive is a mechanism that the Linkage program can’t simulate. I was asked by a user for help with a box transport mechanism and I see that it is another mechanism with the same issue Box Transport Mechanism In case that YouTube…
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