import scrawl from '../source/scrawl.js';import scrawl from '../source/scrawl.js';const canvas = scrawl.library.canvas.mycanvas;
scrawl.importDomImage('.flowers');
canvas.setBase({
backgroundColor: 'red',
});Create the filter
const myFilter = scrawl.makeFilter({
name: 'emboss',
method: 'emboss',
angle: 225,
strength: 3,
smoothing: 0,
tolerance: 0,
clamp: 0,
postProcessResults: true,
useNaturalGrayscale: false,
keepOnlyChangedAreas: false,
});Create the target entity
scrawl.makePicture({
name: 'base-piccy',
asset: 'iris',
width: '100%',
height: '100%',
copyWidth: '100%',
copyHeight: '100%',
method: 'fill',
filters: ['emboss'],
});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 strength = document.querySelector('#strength'),
angle = document.querySelector('#angle'),
smoothing = document.querySelector('#smoothing'),
clamp = document.querySelector('#clamp'),
tolerance = document.querySelector('#tolerance');
return function () {
testNow = Date.now();
testTime = testNow - testTicker;
testTicker = testNow;
testMessage.textContent = `Screen refresh: ${Math.ceil(testTime)}ms; fps: ${Math.floor(1000 / testTime)}
Angle - ${angle.value}°, Strength - ${strength.value}, Smoothing - ${smoothing.value}, Clamp - ${clamp.value}
Tolerance - ${tolerance.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: {
strength: ['strength', 'float'],
angle: ['angle', 'float'],
smoothing: ['smoothing', 'round'],
tolerance: ['tolerance', 'round'],
clamp: ['clamp', 'round'],
postProcessResults: ['postProcessResults', 'boolean'],
useNaturalGrayscale: ['useNaturalGrayscale', 'boolean'],
keepOnlyChangedAreas: ['keepOnlyChangedAreas', 'boolean'],
opacity: ['opacity', 'float'],
},
});Setup form
document.querySelector('#strength').value = 3;
document.querySelector('#angle').value = 225;
document.querySelector('#smoothing').value = 0;
document.querySelector('#tolerance').value = 0;
document.querySelector('#clamp').value = 0;
document.querySelector('#postProcessResults').options.selectedIndex = 1;
document.querySelector('#useNaturalGrayscale').options.selectedIndex = 0;
document.querySelector('#keepOnlyChangedAreas').options.selectedIndex = 0;
document.querySelector('#opacity').value = 1;console.log(scrawl.library);