Of course, this is just some freeware that you can download. The only change is that the Linkage page and the Linkage Download page all download version 3, not the old version 2. There is no way to get Linkage 2 anymore. No one reported any bug in…
Continue readingI am changing the way radii are drawn in the Linkage program. The old way was to show the radius value inside of the circle but that doesn’t seem typical, at least not in the U.S. New Radius Value Position The new way draws the radius value outside…
Continue readingTo anyone reading this blog, drector@rockclimbing.com is no longer a usable email address. rockclimbing.com is shutting off their email server. I will get forwarded emails from that address for a while, but please don’t use it anymore. I can be reached at my gmail address “rectorsquid”. Dave
Continue readingI just updated the Linkage 3.0 Beta files. The new version has a bug fix that caused some geared mechanisms to fail in the simulator. This came about because of how I now allow a gear to be placed on an input anchor, but be fastened to another…
Continue readingToday’s post is about writing code. More specifically, about document and view architectures. Code isolation, or encapsulation, is where one piece of code knows little or nothing about another. Right now, I am dealing with keeping the Linkage document separate from the Linkage view of that document. The…
Continue readingOrbiting Gears and Chain Mechanism I’m having a little trouble with the Linkage user interface. In the picture above, which is a nicely exported and scaled down JPEG image, I designed a mechanism to show an orbiting planet (gear 2) with an orbiting moon (connector F). Designing this…
Continue readingLinkage 3.0 is almost ready! I had a little trouble with the math for the gear and chain simulation. For a few minutes, I had very different code for the gear simulator and the chain simulator. I soon realized that I had figured out an improvement when working…
Continue readingI have some of the gear simulator working. Video of Simple Gears The simple gears are self explanatory. This was the first working test. The gear size ratio is set in the coordinate/length/angle text box in the tool bar, or by pressing the Gear Ratio button below that….
Continue readingOkay, the user interface is pretty much working for gears. Gears Now I need to work on the simulation. This sounds simple, but there are some issues that I still need to work out. To start with, the existing simulator does not “follow” the kinematic chain. No Simple…
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