import scrawl from '../source/scrawl.js';import scrawl from '../source/scrawl.js';const canvas = scrawl.library.canvas.mycanvas;
scrawl.importDomImage('.flowers');Create the filter
const myFilter = scrawl.makeFilter({
name: 'pixelate',
method: 'pixelate',
tileWidth: 10,
tileHeight: 10,
offsetX: 0,
offsetY: 0,
});Create the target entity
scrawl.makePicture({
name: 'base-piccy',
asset: 'iris',
width: '100%',
height: '100%',
copyWidth: '100%',
copyHeight: '100%',
method: 'fill',
filters: ['pixelate'],
});Function to display frames-per-second data, and other information relevant to the demo
let report = function () {
let testTicker = Date.now(),
testTime, testNow,
testMessage = document.querySelector('#reportmessage');
let tile_width = document.querySelector('#tile_width'),
tile_height = document.querySelector('#tile_height'),
offset_x = document.querySelector('#offset_x'),
offset_y = document.querySelector('#offset_y'),
opacity = document.querySelector('#opacity');
return function () {
testNow = Date.now();
testTime = testNow - testTicker;
testTicker = testNow;
testMessage.textContent = `Screen refresh: ${Math.ceil(testTime)}ms; fps: ${Math.floor(1000 / testTime)}
Tile dimensions - width: ${tile_width.value} height: ${tile_height.value}
Offset - x: ${offset_x.value} y: ${offset_y.value}
Opacity: ${opacity.value}`;
};
}();Create the Display cycle animation
const demoAnimation = scrawl.makeRender({
name: "demo-animation",
target: canvas,
afterShow: report,
});scrawl.observeAndUpdate({
event: ['input', 'change'],
origin: '.controlItem',
target: myFilter,
useNativeListener: true,
preventDefault: true,
updates: {
tile_width: ['tileWidth', 'round'],
tile_height: ['tileHeight', 'round'],
offset_x: ['offsetX', 'round'],
offset_y: ['offsetY', 'round'],
includeRed: ['includeRed', 'boolean'],
includeGreen: ['includeGreen', 'boolean'],
includeBlue: ['includeBlue', 'boolean'],
includeAlpha: ['includeAlpha', 'boolean'],
opacity: ['opacity', 'float'],
},
});Setup form
document.querySelector('#tile_width').value = 10;
document.querySelector('#tile_height').value = 10;
document.querySelector('#offset_x').value = 0;
document.querySelector('#offset_y').value = 0;
document.querySelector('#includeRed').options.selectedIndex = 1;
document.querySelector('#includeGreen').options.selectedIndex = 1;
document.querySelector('#includeBlue').options.selectedIndex = 1;
document.querySelector('#includeAlpha').options.selectedIndex = 0;
document.querySelector('#opacity').value = 1;console.log(scrawl.library);