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Since cam simulation involves finding the “best” place on a spline to place a sliding connector, there are bound to be small problems caused by the cam shape. I realized that this can actually cause terrible problems when a cam is using an open spline. The simulation difficulties…
Continue readingI’m about ready to turn the Beta Linkage program into the official production version. The only problem is that I still want to do more work on it. It feels incomplete if it can’t move a cam to make it meet a follower. In other words, the follower…
Continue readingThanks to a user, I fixed a few bugs in the spline/cam simulation code. Splines that are not fastened to a link or connector are now treated as part of the “ground” and can be used as cam-like shapes without producing simulation errors. Speaking of connectors; a cam…
Continue readingThe spline and cam features are working in the Linkage software. Above is a video with my first attempt at a tutorial. Since I haven’t used the software to create splines and cams much, I stutter and pause a bit while thinking about what to do next. It’s…
Continue readingAfter many more hours of work, I have a complete polyline editor. Each segment can be a Bezier curve or a straight line. Each node can be a cusp or have the control points smooth and optionally symmetrical. Nodes can be added and deleted and the curve can…
Continue readingI did some work this week on the cam feature for the Linkage program. Cams are found in many places including in car engines – they open and close the valves – and in many industrial machines. Car engine cams are all based on a similar shape and…
Continue readingCam and Follower I was able to get a functioning cam simulation running in JavaScript. It was a little tricky and isn’t quite perfect yet. Mostly, I had to remember how my code works with the HTML5 canvas and with the coordinate system that I use for the…
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 readingBezier Cam Designer Experiment The experiment is working. The JavaScript code allows a fixed number of points to be manipulated to create a poly-Bezier shape. The Bezier curve is drawn “by hand” for both the normal version and for the version that uses polar coordinates. The interesting thing…
Continue readingI have started work on adding cams to the Linkage program. It has taken me a while to add this feature because of the complex nature of cams. For instance, cams can be used to control valves in an engine or they can be used to control the…
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