import scrawl from '../source/scrawl.js';import scrawl from '../source/scrawl.js';const canvas = scrawl.library.canvas.mycanvas;
canvas.setBase({
compileOrder: 1,
});Create the assets
scrawl.importDomImage('.flowers');
canvas.buildCell({
name: 'star-cell',
dimensions: [400, 400],
shown: false,
});
scrawl.makeStar({
name: 'my-star',
group: 'star-cell',
radius1: 200,
radius2: 100,
roll: 60,
points: 4,
start: ['center', 'center'],
handle: ['center', 'center'],
fillStyle: 'blue',
strokeStyle: 'red',
lineWidth: 10,
method: 'fillThenDraw',
});
canvas.buildCell({
name: 'wheel-cell',
dimensions: [400, 400],
shown: false,
});
scrawl.makeWheel({
name: 'my-wheel',
group: 'wheel-cell',
radius: 150,
startAngle: 30,
endAngle: -30,
includeCenter: true,
start: ['center', 'center'],
handle: ['center', 'center'],
fillStyle: 'green',
strokeStyle: 'yellow',
lineWidth: 10,
method: 'fillThenDraw',
delta: {
roll: -0.3,
},
});Create the filters
scrawl.makeFilter({
name: 'star-filter',
method: 'image',
asset: 'star-cell',
width: 400,
height: 400,
copyWidth: 400,
copyHeight: 400,
lineOut: 'star',
}).clone({
name: 'wheel-filter',
asset: 'wheel-cell',
lineOut: 'wheel',
});
scrawl.makeFilter({
name: 'flower-filter',
method: 'image',
asset: 'iris',
width: 200,
height: 200,
copyX: '25%',
copyY: 100,
copyWidth: '50%',
copyHeight: 200,
lineOut: 'flower',
});
let composeFilter = scrawl.makeFilter({
name: 'block-filter',
method: 'compose',
lineIn: 'star',
lineMix: 'source',
offsetX: 30,
offsetY: 30,
compose: 'source-over',
});Display the filter in a Block entity
scrawl.makeGradient({
name: 'linear',
endX: '100%',
})
.updateColor(0, 'blue')
.updateColor(495, 'red')
.updateColor(500, 'yellow')
.updateColor(505, 'red')
.updateColor(999, 'green');
scrawl.makeBlock({
name: 'display-block',
start: ['center', 'center'],
handle: ['center', 'center'],
dimensions: ['90%', '90%'],
roll: -20,
lineWidth: 10,
fillStyle: 'linear',
lockFillStyleToEntity: true,
strokeStyle: 'coral',
method: 'fillThenDraw',Load in the three image filters, then the compose filter to combine two of them
filters: ['star-filter', 'wheel-filter', 'flower-filter', 'block-filter'],
});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 ox = document.querySelector('#offset-x'),
oy = 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)}
Offset - x: ${ox.value}, y: ${oy.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: composeFilter,
useNativeListener: true,
preventDefault: true,
updates: {
source: ['lineIn', 'raw'],
destination: ['lineMix', 'raw'],
composite: ['compose', 'raw'],
opacity: ['opacity', 'float'],
'offset-x': ['offsetX', 'round'],
'offset-y': ['offsetY', 'round'],
},
});Setup form
document.querySelector('#source').options.selectedIndex = 2;
document.querySelector('#destination').options.selectedIndex = 0;
document.querySelector('#composite').options.selectedIndex = 0;
document.querySelector('#opacity').value = 1;
document.querySelector('#offset-x').value = 30;
document.querySelector('#offset-y').value = 30;console.log(scrawl.library);