Tag Archives: canvas

Prettying Up the 3D Graph Output

Posted on May 26, 2016 by R.P. Churchill

Here I’ve prettied the graph up so the lines change color every 100 degrees F, and I’ve added a legend. I suppose I could choose consecutive colors with a bit more contrast.

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Graphing the Matrix Output

Posted on May 25, 2016 by R.P. Churchill

Here I continually run the heating routine for a piece with an initial temperature of 70 degrees in a furnace set to 2300 degrees. The temperature scale, expressed vertically, runs from 0-2500 degrees. The bottom of the piece, which sits … Continue reading →

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Controlling the Animation

Posted on April 28, 2016 by R.P. Churchill

One way to pause a running animation is simply to inhibit the action as shown in the first example below, and based on the following code. As you can see, the window.requestAnimationFrame is still called, but setting the value of … Continue reading →

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More Basic Animation

Posted on April 27, 2016 by R.P. Churchill

Today I continued experimenting with the techniques I started using yesterday. I tried the exercise with filled circles and also after having placed additional objects on the screen. The only drawing modes that came close to supporting what I was … Continue reading →

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Beginnings of an Animation

Posted on April 26, 2016 by R.P. Churchill

I wrote various two- and three-dimensional animations for years and am looking into various aspects of the practice beginning here. I took a course in computer graphics during my senior year in college using Microsoft Pascal on first-generation IBM PCs … Continue reading →

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Adding to the Graphing Capabilities

Posted on April 14, 2016 by R.P. Churchill

As you saw yesterday in the figure below, I’ve added the ability to plot individual points on the graph rather than a continuous function. The x- and y- locations are determined independently by transforming a value to a pixel location … Continue reading →

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Steam Table Functions, Curve Fitting, and Yes, the Graph Project

Posted on April 13, 2016 by R.P. Churchill

I’m finally detouring back to fixing the handful of errant segments in the steam table functions I created for my simulation work in the early 90s. This graph, originally posted on March 16th, shows a hiccup in the segment from … Continue reading →

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Graph Project: Updated To Do List

Posted on April 12, 2016 by R.P. Churchill

At this point I need to change direction and get back to addressing the issues which led me to create the JavaScript graph object in the first place. I’ve got enough solid functionality in place to proceed, and I’ll add … Continue reading →

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Graph Project: Show or Hide Graph and Axis Labels

Posted on April 11, 2016 by R.P. Churchill

The figures below show that the graph and axis labels can be hidden or shown independently.

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Graph Project: Auto-Sizing Works — The Hard Part, Part Two

Posted on April 7, 2016 by R.P. Churchill

Today’s work involved getting the plot area to size itself properly when the last major tick on an axis does not fall right at the end of the axis. It turned out to be just a bit complex and it … Continue reading →

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