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plot bar graph handling floating point values (#855)

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* handling floating point values

* removelogging
This commit is contained in:
Peli de Halleux
2018-06-04 16:47:26 -07:00
committed by GitHub
parent 2492716f54
commit 4619dbdd89
3 changed files with 29 additions and 6 deletions
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18
libs/core/led.ts
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@ -19,19 +19,25 @@
//% blockId=device_plot_bar_graph block="plot bar graph of %value up to %high" icon="\uf080" blockExternalInputs=true
//% parts="ledmatrix"
export function plotBarGraph(value: number, high: number): void {
let now = input.runningTime();
const now = input.runningTime();
serial.writeLine(value.toString());
value = Math.abs(value);
if (high != 0) barGraphHigh = high;
else if (value > barGraphHigh || now - barGraphHighLast > 10000) {
// auto-scale "high" is not provided
if (high <= 0) {
barGraphHigh = high;
} else if (value > barGraphHigh || now - barGraphHighLast > 10000) {
barGraphHigh = value;
barGraphHighLast = now;
}
barGraphHigh = Math.max(barGraphHigh, 16);
// normalize lack of data to 0..1
if (barGraphHigh < 16 * Number.EPSILON)
barGraphHigh = 1;
let v = (value * 15) / barGraphHigh;
// normalize value to 0..1
const v = value / barGraphHigh;
const dv = 1 / 16;
let k = 0;
for (let y = 4; y >= 0; --y) {
for (let x = 0; x < 3; ++x) {
@ -42,7 +48,7 @@
plot(2 - x, y);
plot(2 + x, y);
}
++k;
k += dv;
}
}
}