pxt-calliope/sim/visuals/neopixel.ts

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/// <reference path="../../node_modules/pxt-core/built/pxtsim.d.ts"/>
/// <reference path="../../libs/microbit/dal.d.ts"/>
/// <reference path="../../libs/microbit/shims.d.ts"/>
/// <reference path="../../libs/microbit/enums.d.ts"/>
/// <reference path="../state/neopixel.ts"/>
/// <reference path="../simlib.ts"/>
//TODO move to utils
namespace pxsim.visuals {
//expects rgb from 0,255, gives h in [0,360], s in [0, 100], l in [0, 100]
export function rgbToHsl(rgb: [number, number, number]): [number, number, number] {
let [r, g, b] = rgb;
let [r$, g$, b$] = [r / 255, g / 255, b / 255];
let cMin = Math.min(r$, g$, b$);
let cMax = Math.max(r$, g$, b$);
let cDelta = cMax - cMin;
let h: number, s: number, l: number;
let maxAndMin = cMax + cMin;
//lum
l = (maxAndMin / 2) * 100
if (cDelta === 0)
s = h = 0;
else {
//hue
if (cMax === r$)
h = 60 * (((g$ - b$) / cDelta) % 6);
else if (cMax === g$)
h = 60 * (((b$ - r$) / cDelta) + 2);
else if (cMax === b$)
h = 60 * (((r$ - g$) / cDelta) + 4);
//sat
if (l > 50)
s = 100 * (cDelta / (2 - maxAndMin));
else
s = 100 * (cDelta / maxAndMin);
}
return [Math.floor(h), Math.floor(s), Math.floor(l)];
}
}
namespace pxsim.visuals {
const PIXEL_SPACING = PIN_DIST * 3;
const PIXEL_RADIUS = PIN_DIST;
const CANVAS_WIDTH = 1.2 * PIN_DIST;
const CANVAS_HEIGHT = 12 * PIN_DIST;
const CANVAS_VIEW_WIDTH = CANVAS_WIDTH;
const CANVAS_VIEW_HEIGHT = CANVAS_HEIGHT;
const CANVAS_VIEW_PADDING = PIN_DIST * 4;
const CANVAS_LEFT = 1.4 * PIN_DIST;
const CANVAS_TOP = PIN_DIST;
// For the instructions parts list
export function mkNeoPixelPart(xy: Coord = [0, 0]): SVGElAndSize {
const NP_PART_XOFF = -13.5;
const NP_PART_YOFF = -11;
const NP_PART_WIDTH = 87.5;
const NP_PART_HEIGHT = 190;
2016-08-31 00:59:02 +02:00
const NEOPIXEL_PART_IMG = "neopixel.svg";
let [x, y] = xy;
let l = x + NP_PART_XOFF;
let t = y + NP_PART_YOFF;
let w = NP_PART_WIDTH;
let h = NP_PART_HEIGHT;
let img = <SVGImageElement>svg.elt("image");
svg.hydrate(img, {class: "sim-neopixel-strip", x: l, y: t, width: w, height: h,
href: `/static/hardware/${NEOPIXEL_PART_IMG}`});
return {el: img, x: l, y: t, w: w, h: h};
}
export class NeoPixel implements SVGAndSize<SVGCircleElement> {
public el: SVGCircleElement;
public w: number;
public h: number;
public x: number;
public y: number;
public cx: number;
public cy: number;
constructor(xy: Coord = [0, 0]) {
let circle = <SVGCircleElement>svg.elt("circle");
let r = PIXEL_RADIUS;
let [cx, cy] = xy;
svg.hydrate(circle, {cx: cx, cy: cy, r: r, class: "sim-neopixel"});
this.el = circle;
this.w = r * 2;
this.h = r * 2;
this.x = cx - r;
this.y = cy - r;
this.cx = cx;
this.cy = cy;
}
public setRgb(rgb: [number, number, number]) {
let hsl = rgbToHsl(rgb);
let [h, s, l] = hsl;
//We ignore luminosity since it doesn't map well to real-life brightness
let fill = `hsl(${h}, ${s}%, 70%)`;
this.el.setAttribute("fill", fill);
}
}
export class NeoPixelCanvas {
public canvas: SVGSVGElement;
public pin: number;
public pixels: NeoPixel[];
private viewBox: [number, number, number, number];
private background: SVGRectElement;
constructor(pin: number) {
this.pixels = [];
this.pin = pin;
let el = <SVGSVGElement>svg.elt("svg");
svg.hydrate(el, {
"class": `sim-neopixel-canvas`,
"x": "0px",
"y": "0px",
"width": `${CANVAS_WIDTH}px`,
"height": `${CANVAS_HEIGHT}px`,
});
this.canvas = el;
this.background = <SVGRectElement>svg.child(el, "rect", { class: "sim-neopixel-background hidden"});
this.updateViewBox(-CANVAS_VIEW_WIDTH / 2, 0, CANVAS_VIEW_WIDTH, CANVAS_VIEW_HEIGHT);
}
private updateViewBox(x: number, y: number, w: number, h: number) {
this.viewBox = [x, y, w, h];
svg.hydrate(this.canvas, {"viewBox": `${x} ${y} ${w} ${h}`});
svg.hydrate(this.background, {"x": x, "y": y, "width": w, "height": h});
}
public update(colors: RGBW[]) {
if (!colors || colors.length <= 0)
return;
for (let i = 0; i < colors.length; i++) {
let pixel = this.pixels[i];
if (!pixel) {
let cxy: Coord = [0, CANVAS_VIEW_PADDING + i * PIXEL_SPACING];
pixel = this.pixels[i] = new NeoPixel(cxy);
this.canvas.appendChild(pixel.el);
}
let color = colors[i];
pixel.setRgb(color);
svg.hydrate(pixel.el, {title: `offset: ${i}`});
}
//show the canvas if it's hidden
svg.removeClass(this.background, "hidden");
//resize if necessary
let [first, last] = [this.pixels[0], this.pixels[this.pixels.length - 1]]
let yDiff = last.cy - first.cy;
let newH = yDiff + CANVAS_VIEW_PADDING * 2;
let [oldX, oldY, oldW, oldH] = this.viewBox;
if (oldH < newH) {
let scalar = newH / oldH;
let newW = oldW * scalar;
this.updateViewBox(-newW / 2, oldY, newW, newH);
}
}
public setLoc(xy: Coord) {
let [x, y] = xy;
svg.hydrate(this.canvas, {x: x, y: y});
}
};
function gpioPinToPinNumber(gpioPin: string): number {
let pinNumStr = gpioPin.split("P")[1];
let pinNum = Number(pinNumStr) + 7 /*MICROBIT_ID_IO_P0; TODO: don't hardcode this, import enums.d.ts*/;
return pinNum
}
function parseNeoPixelMode(modeStr: string): NeoPixelMode {
const modeMap: Map<NeoPixelMode> = {
"NeoPixelMode.RGB": NeoPixelMode.RGB,
"NeoPixelMode.RGBW": NeoPixelMode.RGBW,
"*": NeoPixelMode.RGB,
};
let mode: NeoPixelMode = null;
for (let key in modeMap) {
if (key == modeStr) {
mode = modeMap[key];
break;
}
}
U.assert(mode != null, "Unknown NeoPixelMode: " + modeStr);
return mode;
}
export class NeoPixelView implements IBoardComponent<NeoPixelState> {
public style: string = `
.sim-neopixel-canvas {
}
.sim-neopixel-canvas-parent:hover {
transform-origin: center;
transform: scale(4) translateY(-60px);
}
.sim-neopixel-canvas .hidden {
visibility:hidden;
}
.sim-neopixel-background {
fill: rgba(255,255,255,0.9);
}
.sim-neopixel-strip {
}
`;
public element: SVGElement;
public defs: SVGElement[];
private state: NeoPixelState;
private canvas: NeoPixelCanvas;
private part: SVGElAndSize;
private stripGroup: SVGGElement;
private lastLocation: Coord;
private pin: number;
private mode: NeoPixelMode;
public init(bus: EventBus, state: NeoPixelState, svgEl: SVGSVGElement, gpioPins: string[], otherArgs: string[]): void {
U.assert(otherArgs.length === 1, "NeoPixels assumes a RGB vs RGBW mode is passed to it");
let modeStr = otherArgs[0];
this.mode = parseNeoPixelMode(modeStr);
this.state = state;
this.stripGroup = <SVGGElement>svg.elt("g");
this.element = this.stripGroup;
let pinStr = gpioPins[0];
this.pin = gpioPinToPinNumber(pinStr);
this.lastLocation = [0, 0];
let part = mkNeoPixelPart();
this.part = part;
this.stripGroup.appendChild(part.el);
let canvas = new NeoPixelCanvas(this.pin);
this.canvas = canvas;
let canvasG = svg.child(this.stripGroup, "g", {class: "sim-neopixel-canvas-parent"});
canvasG.appendChild(canvas.canvas);
this.updateStripLoc();
}
public moveToCoord(xy: Coord): void {
let [x, y] = xy;
let loc: Coord = [x, y];
this.lastLocation = loc;
this.updateStripLoc();
}
private updateStripLoc() {
let [x, y] = this.lastLocation;
this.canvas.setLoc([x + CANVAS_LEFT, y + CANVAS_TOP]);
svg.hydrate(this.part.el, {transform: `translate(${x} ${y})`}); //TODO: update part's l,h, etc.
}
public updateState(): void {
let colors = this.state.getColors(this.pin, this.mode);
this.canvas.update(colors);
}
public updateTheme (): void { }
}
}