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pianoroll smear as float

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This commit is contained in:
Felix Roos 2023-11-18 21:16:03 +01:00
parent 049aa35286
commit f759999826
1 changed files with 11 additions and 4 deletions
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15
packages/core/pianoroll.mjs
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@ -165,10 +165,7 @@ export function pianoroll({
barThickness = fold ? valueAxis / foldValues.length : valueAxis / valueExtent;
ctx.fillStyle = background;
ctx.globalAlpha = 1; // reset!
if (!smear) {
ctx.clearRect(0, 0, w, h);
ctx.fillRect(0, 0, w, h);
}
clearScreen(smear);
haps.forEach((event) => {
const isActive = event.whole.begin <= time && event.endClipped > time;
let strokeCurrent = stroke ?? (strokeActive && isActive);
@ -282,3 +279,13 @@ export function drawPianoroll(options) {
const { drawTime, ...rest } = options;
pianoroll({ ...getDrawOptions(drawTime), ...rest });
}
function clearScreen(smear = 0, smearRGB = `0,0,0`) {
const ctx = getDrawContext();
if (!smear) {
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
} else {
ctx.fillStyle = `rgba(${smearRGB},${1 - smear})`;
ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
}
}