mirror of https://github.com/espruino/BangleApps
214 lines
9.9 KiB
JavaScript
214 lines
9.9 KiB
JavaScript
(function karvonen(hrmSettings, exsHrmStats) {
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//This app is an extra feature implementation for the Run.app of the bangle.js. It's called run+
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//The calculation of the Heart Rate Zones is based on the Karvonen method. It requires to know maximum and minimum heart rates. More precise calculation methods require a lab.
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//Other methods are even more approximative.
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let wu = require("widget_utils");
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wu.hide();
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let R = Bangle.appRect;
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g.reset().clearRect(R).setFontAlign(0,0,0);
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const x = "x"; const y = "y";
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function Rdiv(axis, divisor) { // Used when placing things on the screen
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return axis=="x" ? (R.x + (R.w-1)/divisor):(R.y + (R.h-1)/divisor);
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}
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let linePoints = { //Not lists of points, but used to update points in the drawArrows function.
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x: [
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175/40,
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2,
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175/135,
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],
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y: [
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175/64,
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175/52,
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175/110,
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175/122,
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],
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};
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function drawArrows() {
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g.setColor(g.theme.fg);
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// Upper
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g.drawLine(Rdiv(x,linePoints.x[0]), Rdiv(y,linePoints.y[0]), Rdiv(x,linePoints.x[1]), Rdiv(y,linePoints.y[1]));
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g.drawLine(Rdiv(x,linePoints.x[1]), Rdiv(y,linePoints.y[1]), Rdiv(x,linePoints.x[2]), Rdiv(y,linePoints.y[0]));
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// Lower
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g.drawLine(Rdiv(x,linePoints.x[0]), Rdiv(y,linePoints.y[2]), Rdiv(x,linePoints.x[1]), Rdiv(y,linePoints.y[3]));
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g.drawLine(Rdiv(x,linePoints.x[1]), Rdiv(y,linePoints.y[3]), Rdiv(x,linePoints.x[2]), Rdiv(y,linePoints.y[2]));
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}
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//To calculate Heart rate zones, we need to know the heart rate reserve (HRR)
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// HRR = maximum HR - Minimum HR. minhr is minimum hr, maxhr is maximum hr.
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//get the hrr (heart rate reserve).
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// I put random data here, but this has to come as a menu in the settings section so that users can change it.
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let minhr = hrmSettings.min;
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let maxhr = hrmSettings.max;
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function calculatehrr(minhr, maxhr) {
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return maxhr - minhr;}
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//test input for hrr (it works).
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let hrr = calculatehrr(minhr, maxhr);
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console.log(hrr);
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//Test input to verify the zones work. The following value for "hr" has to be deleted and replaced with the Heart Rate Monitor input.
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let hr = exsHrmStats.getValue();
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// These letiables display next and previous HR zone.
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//get the hrzones right. The calculation of the Heart rate zones here is based on the Karvonen method
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//60-70% of HRR+minHR = zone2. //70-80% of HRR+minHR = zone3. //80-90% of HRR+minHR = zone4. //90-99% of HRR+minHR = zone5. //=>99% of HRR+minHR = serious risk of heart attack
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let minzone2 = hrr * 0.6 + minhr;
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let maxzone2 = hrr * 0.7 + minhr;
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let maxzone3 = hrr * 0.8 + minhr;
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let maxzone4 = hrr * 0.9 + minhr;
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let maxzone5 = hrr * 0.99 + minhr;
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// HR data: large, readable, in the middle of the screen
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function drawHR() {
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g.setFontAlign(-1,0,0);
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g.clearRect(Rdiv(x,11/4),Rdiv(y,2)-25,Rdiv(x,11/4)+50*2-14,Rdiv(y,2)+25);
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g.setColor(g.theme.fg);
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g.setFont("Vector",50);
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g.drawString(hr, Rdiv(x,11/4), Rdiv(y,2)+4);
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}
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function drawWaitHR() {
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g.setColor(g.theme.fg);
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// Waiting for HRM
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g.setFontAlign(0,0,0);
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g.setFont("Vector",50);
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g.drawString("--", Rdiv(x,2)+4, Rdiv(y,2)+4);
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// Waiting for current Zone
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g.setFont("Vector",24);
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g.drawString("Z-", Rdiv(x,4.3)-3, Rdiv(y,2)+2);
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// waiting for upper and lower limit of current zone
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g.setFont("Vector",20);
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g.drawString("--", Rdiv(x,2)+2, Rdiv(y,9/2));
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g.drawString("--", Rdiv(x,2)+2, Rdiv(y,9/7));
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}
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//These functions call arcs to show different HR zones.
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//To shorten the code, I'll reference some letiables and reuse them.
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let centreX = R.x + 0.5 * R.w;
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let centreY = R.y + 0.5 * R.h;
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let minRadius = 0.38 * R.h;
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let maxRadius = 0.50 * R.h;
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//draw background image (dithered green zones)(I should draw different zones in different dithered colors)
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const HRzones= require("graphics_utils");
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let minRadiusz = 0.44 * R.h;
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let startAngle = HRzones.degreesToRadians(-88.5);
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let endAngle = HRzones.degreesToRadians(268.5);
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function drawBgArc() {
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g.setColor(g.theme.dark==false?0xC618:"#002200");
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HRzones.fillArc(g, centreX, centreY, minRadiusz, maxRadius, startAngle, endAngle);
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}
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const zones = require("graphics_utils");
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//####### A function to simplify a bit the code ######
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function simplify (sA, eA, Z, currentZone, lastZone) {
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let startAngle = zones.degreesToRadians(sA);
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let endAngle = zones.degreesToRadians(eA);
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if (currentZone == lastZone) zones.fillArc(g, centreX, centreY, minRadius, maxRadius, startAngle, endAngle);
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else zones.fillArc(g, centreX, centreY, minRadiusz, maxRadius, startAngle, endAngle);
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g.setFont("Vector",24);
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g.clearRect(Rdiv(x,4.3)-12, Rdiv(y,2)+2-12,Rdiv(x,4.3)+12, Rdiv(y,2)+2+12);
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g.setFontAlign(0,0,0);
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g.drawString(Z, Rdiv(x,4.3), Rdiv(y,2)+2);
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}
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function zoning (max, min) { // draw values of upper and lower limit of current zone
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g.setFont("Vector",20);
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g.setColor(g.theme.fg);
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g.clearRect(Rdiv(x,2)-20*2, Rdiv(y,9/2)-10,Rdiv(x,2)+20*2, Rdiv(y,9/2)+10);
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g.clearRect(Rdiv(x,2)-20*2, Rdiv(y,9/7)-10,Rdiv(x,2)+20*2, Rdiv(y,9/7)+10);
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g.setFontAlign(0,0,0);
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g.drawString(max, Rdiv(x,2), Rdiv(y,9/2));
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g.drawString(min, Rdiv(x,2), Rdiv(y,9/7));
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}
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function clearCurrentZone() { // Clears the extension of the current zone by painting the extension area in background color
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g.setColor(g.theme.bg);
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HRzones.fillArc(g, centreX, centreY, minRadius-1, minRadiusz, startAngle, endAngle);
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}
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function getZone(zone) {
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drawBgArc();
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clearCurrentZone();
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if (zone >= 0) {zoning(minzone2, minhr);g.setColor("#00ffff");simplify(-88.5, -45, "Z1", 0, zone);}
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if (zone >= 1) {zoning(maxzone2, minzone2);g.setColor("#00ff00");simplify(-43.5, -21.5, "Z2", 1, zone);}
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if (zone >= 2) {zoning(maxzone2, minzone2);g.setColor("#00ff00");simplify(-20, 1.5, "Z2", 2, zone);}
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if (zone >= 3) {zoning(maxzone2, minzone2);g.setColor("#00ff00");simplify(3, 24, "Z2", 3, zone);}
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if (zone >= 4) {zoning(maxzone3, maxzone2);g.setColor("#ffff00");simplify(25.5, 46.5, "Z3", 4, zone);}
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if (zone >= 5) {zoning(maxzone3, maxzone2);g.setColor("#ffff00");simplify(48, 69, "Z3", 5, zone);}
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if (zone >= 6) {zoning(maxzone3, maxzone2);g.setColor("#ffff00");simplify(70.5, 91.5, "Z3", 6, zone);}
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if (zone >= 7) {zoning(maxzone4, maxzone3);g.setColor("#ff8000");simplify(93, 114.5, "Z4", 7, zone);}
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if (zone >= 8) {zoning(maxzone4, maxzone3);g.setColor("#ff8000");simplify(116, 137.5, "Z4", 8, zone);}
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if (zone >= 9) {zoning(maxzone4, maxzone3);g.setColor("#ff8000");simplify(139, 160, "Z4", 9, zone);}
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if (zone >= 10) {zoning(maxzone5, maxzone4);g.setColor("#ff0000");simplify(161.5, 182.5, "Z5", 10, zone);}
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if (zone >= 11) {zoning(maxzone5, maxzone4);g.setColor("#ff0000");simplify(184, 205, "Z5", 11, zone);}
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if (zone == 12) {zoning(maxzone5, maxzone4);g.setColor("#ff0000");simplify(206.5, 227.5, "Z5", 12, zone);}
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}
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function getZoneAlert() {
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const HRzonemax = require("graphics_utils");
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let minRadius = 0.40 * R.h;
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let startAngle1 = HRzonemax.degreesToRadians(-90);
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let endAngle1 = HRzonemax.degreesToRadians(270);
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g.setFont("Vector",38);g.setColor("#ff0000");
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HRzonemax.fillArc(g, centreX, centreY, minRadius, maxRadius, startAngle1, endAngle1);
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g.drawString("ALERT", 26,66);
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}
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//Subdivided zones for better readability of zones when calling the images. //Changing HR zones will trigger the function with the image and previous&next HR zones.
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let subZoneLast;
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function drawZones() {
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if ((hr < maxhr - 2) && subZoneLast==13) {g.clear(); drawArrows(); drawHR();} // Reset UI when coming down from zone alert.
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if (hr <= hrr * 0.6 + minhr) {if (subZoneLast!=0) {subZoneLast=0; getZone(subZoneLast);}} // Z1
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else if (hr <= hrr * 0.64 + minhr) {if (subZoneLast!=1) {subZoneLast=1; getZone(subZoneLast);}} // Z2a
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else if (hr <= hrr * 0.67 + minhr) {if (subZoneLast!=2) {subZoneLast=2; getZone(subZoneLast);}} // Z2b
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else if (hr <= hrr * 0.70 + minhr) {if (subZoneLast!=3) {subZoneLast=3; getZone(subZoneLast);}} // Z2c
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else if (hr <= hrr * 0.74 + minhr) {if (subZoneLast!=4) {subZoneLast=4; getZone(subZoneLast);}} // Z3a
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else if (hr <= hrr * 0.77 + minhr) {if (subZoneLast!=5) {subZoneLast=5; getZone(subZoneLast);}} // Z3b
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else if (hr <= hrr * 0.80 + minhr) {if (subZoneLast!=6) {subZoneLast=6; getZone(subZoneLast);}} // Z3c
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else if (hr <= hrr * 0.84 + minhr) {if (subZoneLast!=7) {subZoneLast=7; getZone(subZoneLast);}} // Z4a
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else if (hr <= hrr * 0.87 + minhr) {if (subZoneLast!=8) {subZoneLast=8; getZone(subZoneLast);}} // Z4b
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else if (hr <= hrr * 0.90 + minhr) {if (subZoneLast!=9) {subZoneLast=9; getZone(subZoneLast);}} // Z4c
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else if (hr <= hrr * 0.94 + minhr) {if (subZoneLast!=10) {subZoneLast=10; getZone(subZoneLast);}} // Z5a
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else if (hr <= hrr * 0.96 + minhr) {if (subZoneLast!=11) {subZoneLast=11; getZone(subZoneLast);}} // Z5b
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else if (hr <= hrr * 0.98 + minhr) {if (subZoneLast!=12) {subZoneLast=12; getZone(subZoneLast);}} // Z5c
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else if (hr >= maxhr - 2) {subZoneLast=13; g.clear();getZoneAlert();} // Alert
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}
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function initDraw() {
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drawArrows();
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if (hr!=0) updateUI(true); else {drawWaitHR(); drawBgArc();}
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//drawZones();
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}
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let hrLast;
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//h = 0; // Used to force hr update via web ui console field to trigger draws, together with `if (h!=0) hr = h;` below.
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function updateUI(resetHrLast) { // Update UI, only draw if warranted by change in HR.
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hrLast = resetHrLast?0:hr; // Handles correct updating on init depending on if we've got HRM readings yet or not.
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hr = exsHrmStats.getValue();
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//if (h!=0) hr = h;
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if (hr!=hrLast) {
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drawHR();
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drawZones();
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} //g.setColor(g.theme.fg).drawLine(175/2,0,175/2,175).drawLine(0,175/2,175,175/2); // Used to align UI elements.
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}
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initDraw();
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// check for updates every second.
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karvonenInterval = setInterval(function() {
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if (!isMenuDisplayed && karvonenActive) updateUI();
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}, 1000);
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return karvonenInterval;
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})
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