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Sim: greyscale display now respects brightness (#1160)

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* Sim: greyscale display now respects brightness

* Don't overwrite image

* Don't clamp if brightness is at max
This commit is contained in:
Guillaume Jenkins
2018-09-04 17:12:01 -04:00
committed by GitHub
parent d189b023af
commit 3e744b7a8d
1 changed files with 20 additions and 1 deletions
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21
sim/state/ledmatrix.ts
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@@ -134,6 +134,7 @@ namespace pxsim.ImageMethods {
let cb = getResume();
let first = true;
leds = clampPixelBrightness(leds);
board().ledMatrixState.animationQ.enqueue({
interval,
frame: () => {
@@ -151,6 +152,7 @@ namespace pxsim.ImageMethods {
export function plotImage(leds: Image, offset: number): void {
pxtrt.nullCheck(leds)
leds = clampPixelBrightness(leds);
board().ledMatrixState.animationQ.enqueue({
interval: 0,
frame: () => {
@@ -211,6 +213,7 @@ namespace pxsim.ImageMethods {
let off = stride > 0 ? 0 : leds.width - 1;
let display = board().ledMatrixState.image;
leds = clampPixelBrightness(leds);
board().ledMatrixState.animationQ.enqueue({
interval: interval,
frame: () => {
@@ -230,6 +233,22 @@ namespace pxsim.ImageMethods {
whenDone: cb
})
}
function clampPixelBrightness(img: Image): Image {
let res = img;
if (led.displayMode() === DisplayMode.greyscale && led.brightness() < 0xff) {
res = new Image(img.width, img.data);
const b = led.brightness();
for (let x = 0; x < res.width; ++x) {
for (let y = 0; y < 5; ++y) {
if (pixelBrightness(res, x, y) > b) {
setPixelBrightness(res, x, y, b);
}
}
}
}
return res;
}
}
namespace pxsim.basic {
@@ -280,7 +299,7 @@ namespace pxsim.led {
export function plotBrightness(x: number, y: number, brightness: number) {
const state = board().ledMatrixState;
brightness = Math.max(0, Math.min(0xff, brightness));
brightness = Math.max(0, Math.min(led.brightness(), brightness));
if (brightness != 0 && brightness != 0xff && state.displayMode != DisplayMode.greyscale)
state.displayMode = DisplayMode.greyscale;
state.image.set(x, y, brightness);