import scrawl from '../source/scrawl.js';import scrawl from '../source/scrawl.js';const canvas = scrawl.library.canvas.mycanvas;
scrawl.importDomImage('.flowers');Create the filter
scrawl.makeFilter({
name: 'noise',
method: 'image',
asset: 'perlin',
width: 500,
height: 500,
copyWidth: '100%',
copyHeight: '100%',
lineOut: 'map',
});
const myFilter = scrawl.makeFilter({
name: 'displace',
method: 'displace',
lineMix: 'map',
offsetX: 0,
offsetY: 0,
scaleX: 1,
scaleY: 1,
});Create the target entity
scrawl.makePicture({
name: 'base-piccy',
asset: 'iris',
width: '100%',
height: '100%',
copyWidth: '100%',
copyHeight: '100%',
method: 'fill',
filters: ['noise', 'displace'],
});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 scale_x = document.querySelector('#scale_x'),
scale_y = document.querySelector('#scale_y'),
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)}
Scales - x: ${scale_x.value} y: ${scale_y.value}
Offsets - 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: {
offset_x: ['offsetX', 'round'],
offset_y: ['offsetY', 'round'],
scale_x: ['scaleX', 'float'],
scale_y: ['scaleY', 'float'],
transparent_edges: ['transparentEdges', 'boolean'],
opacity: ['opacity', 'float'],
},
});Setup form
document.querySelector('#offset_x').value = 0;
document.querySelector('#offset_y').value = 0;
document.querySelector('#scale_x').value = 1;
document.querySelector('#scale_y').value = 1;
document.querySelector('#opacity').value = 1;
document.querySelector('#transparent_edges').options.selectedIndex = 0;console.log(scrawl.library);