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    ./demo/canvas-001.js ./demo/canvas-002.js ./demo/canvas-003.js ./demo/canvas-004.js ./demo/canvas-005.js ./demo/canvas-006.js ./demo/canvas-007.js ./demo/canvas-008.js ./demo/canvas-009.js ./demo/canvas-010.js ./demo/canvas-011.js ./demo/canvas-012.js ./demo/canvas-013.js ./demo/canvas-014.js ./demo/canvas-015.js ./demo/canvas-016.js ./demo/canvas-017.js ./demo/canvas-018.js ./demo/canvas-019.js ./demo/canvas-020.js ./demo/canvas-021.js ./demo/canvas-022.js ./demo/canvas-023.js ./demo/canvas-024.js ./demo/canvas-025.js ./demo/canvas-026.js ./demo/canvas-027.js ./demo/canvas-028.js ./demo/canvas-029.js ./demo/canvas-030.js ./demo/canvas-031.js ./demo/canvas-032.js ./demo/canvas-033.js ./demo/canvas-034.js ./demo/canvas-035.js ./demo/canvas-036.js ./demo/canvas-037.js ./demo/canvas-038.js ./demo/canvas-039.js ./demo/canvas-040.js ./demo/canvas-041.js ./demo/canvas-042.js ./demo/canvas-043.js ./demo/canvas-044.js ./demo/canvas-045.js ./demo/canvas-046.js ./demo/canvas-047.js ./demo/component-001.js ./demo/component-002.js ./demo/component-003.js ./demo/component-004.js ./demo/component-005.js ./demo/component-006.js ./demo/component-007.js ./demo/core-001.js ./demo/dom-001.js ./demo/dom-002.js ./demo/dom-003.js ./demo/dom-004.js ./demo/dom-005.js ./demo/dom-006.js ./demo/dom-007.js ./demo/dom-008.js ./demo/dom-009.js ./demo/dom-010.js ./demo/dom-011.js ./demo/dom-012.js ./demo/dom-013.js ./demo/dom-014a.js ./demo/dom-014b.js ./demo/dom-014c.js ./demo/dom-015.js ./demo/dom-016.js ./demo/filters-001.js ./demo/filters-002.js ./demo/filters-003.js ./demo/filters-004.js ./demo/filters-005.js ./demo/filters-006.js ./demo/filters-007.js ./demo/filters-008.js ./demo/filters-009.js ./demo/filters-010.js ./demo/filters-011.js ./demo/filters-012.js ./demo/filters-013.js ./demo/filters-014.js ./demo/filters-015.js ./demo/filters-016.js ./demo/filters-017.js ./demo/filters-018.js ./demo/filters-019.js ./demo/filters-020.js ./demo/filters-501.js ./demo/filters-502.js ./demo/filters-503.js ./demo/filters-504.js ./demo/filters-505.js ./demo/particles-001.js ./demo/particles-002.js ./demo/particles-003.js ./demo/particles-004.js ./demo/particles-005.js ./demo/particles-006.js ./demo/particles-007.js ./demo/particles-008.js ./demo/particles-009.js ./demo/particles-010.js ./demo/particles-011.js ./demo/particles-012.js ./demo/particles-013.js ./demo/particles-014.js ./demo/particles-015.js ./demo/particles-016.js ./demo/temp-001.js ./demo/temp-inkscapeSvgFilters.js
  • ¶

    Demo Canvas 029

    Phrase entitys and gradients

  • ¶

    Run code

    import scrawl from '../source/scrawl.js'
  • ¶

    Scene setup

    let canvas = scrawl.library.artefact.mycanvas;
    
    canvas.setBase({
        backgroundColor: 'lightgray'
    });
  • ¶

    Create Gradient

    let mygradient = scrawl.makeGradient({
    
        name: 'gradient-1',
    
        endX: '100%',
    
        paletteStart: 10,
        paletteEnd: 990,
    
        delta: {
            paletteStart: -1,
            paletteEnd: -1,
        },
    
        cyclePalette: true,
    })
    .updateColor(0, 'black')
    .updateColor(19, 'red')
    .updateColor(499, 'black')
    .updateColor(549, 'yellow')
    .updateColor(599, 'black')
    .updateColor(979, 'aqua')
    .updateColor(999, 'black');
    
    scrawl.makeQuadratic({
    
        name: 'my-quad',
    
        startX: '30%',
        startY: '98%',
    
        controlX: '60%',
        controlY: '78%',
    
        endX: '90%',
        endY: '98%',
    
        method: 'draw',
    
        useAsPath: true,
    });
  • ¶

    Create Phrase entitys

    scrawl.makePhrase({
    
        name: 'test-phrase-1',
        order: 1,
    
        text: 'Test phrase',
        font: 'bold 46px Garamond, serif',
    
        startX: '5%',
        startY: '5%',
    
        fillStyle: 'gradient-1',
    
    }).clone({
    
        name: 'test-phrase-2',
    
        width: '40%',
    
        startX: '50%',
    
        justify: 'left',
    
    }).clone({
    
        name: 'test-phrase-3',
    
        startY: '30%',
    
        flipUpend: true,
    
    
    }).clone({
    
        name: 'test-phrase-4',
    
        startX: '5%',
    
        lockFillStyleToEntity: true,
    
    }).clone({
    
        name: 'test-phrase-5',
    
        font: '46px cursive',
    
        roll: 90,
        scale: 0.8,
    
        startX: '50%',
        startY: '33%',
    
        width: 'auto',
    
    }).clone({
    
        name: 'test-phrase-6',
    
        startX: '43%',
        startY: '75%',
    
        lockFillStyleToEntity: false,
    
        flipReverse: true,
        
    }).clone({
    
        name: 'test-phrase-7',
  • ¶

    Test to see if we can load a webfont from a remote server and see it show up in the canvas element

    • If the test fails then the phrase will display as 46pt sans-serif
        font: '46px "Mountains of Christmas"',
    
        startX: '0%',
        startY: '10%',
    
        flipReverse: false,
        flipUpend: false,
        
        roll: 0,
        scale: 1,
    
        textPath: 'my-quad',
    
        handleY: '50%',
    
        lockFillStyleToEntity: true,
    
        delta: {
            textPathPosition: -0.005,
        }
    });
    
    scrawl.makePhrase({
    
        name: 'test-phrase-8',
    
        text: 'Lorem ipsum har varit standard ända sedan 1500-talet, när-en-okänd-boksättare-tog att antal bokstäver och blandade dem för att göra ett provexemplar av en bok.',
    
        font: '18px Garamond, serif',
    
        width: '35%',
    
        startX: '5%',
        startY: '35%',
    
        fillStyle: 'gradient-1',
    
    }).clone({
    
        name: 'test-phrase-9',
    
        startX: '58%',
        scale: 0.8,
        letterSpacing: 3,
    
        lockFillStyleToEntity: true,
    });
    
    scrawl.makeBlock({
    
        name: 'top-block',
    
        width: '100%',
        height: 10,
        
        fillStyle: 'gradient-1',
    
        order: 0,
    
    }).clone({
    
        name: 'left-block',
    
        height: '100%',
        width: 10,
    });
    
    let myGroup = scrawl.makeGroup({
    
        name: 'text-group',
    
    }).addArtefacts('test-phrase-1', 'test-phrase-2', 'test-phrase-3', 'test-phrase-4',
        'test-phrase-5', 'test-phrase-6', 'test-phrase-7', 'test-phrase-8', 'test-phrase-9');
  • ¶

    Scene animation

    Function to display frames-per-second data, and other information relevant to the demo

    let report = function () {
    
        let testTicker = Date.now(),
            testTime, testNow, dragging,
            testMessage = document.querySelector('#reportmessage');
    
        return function () {
    
            testNow = Date.now();
            testTime = testNow - testTicker;
            testTicker = testNow;
    
            testMessage.textContent = `Screen refresh: ${Math.ceil(testTime)}ms; fps: ${Math.floor(1000 / testTime)}`;
        };
    }();
  • ¶

    Create the Display cycle animation

    scrawl.makeRender({
    
        name: 'demo-animation',
        target: canvas,
    
        commence: () => mygradient.updateByDelta(),
        afterShow: report,
    });
  • ¶

    User interaction

    scrawl.addNativeListener('change', (e) => {
    
        if (e && e.target) {
    
            e.preventDefault();
            e.stopPropagation();
    
            let value = e.target.value;
    
            switch (value) {
    
                case 'horizontal' :
    
                    mygradient.set({
                        endX: '100%',
                        endY: 0,
                    });
                    break;
    
                case 'vertical' :
    
                    mygradient.set({
                        endX: 0,
                        endY: '100%',
                    });
                    break;
    
                case 'diagonal' :
    
                    mygradient.set({
                        endX: '100%',
                        endY: '100%',
                    });
                    break;
            }
        }
    }, '#gradient');
    
    scrawl.addNativeListener('change', (e) => {
    
        if (e && e.target) {
    
            e.preventDefault();
            e.stopPropagation();
    
            myGroup.setArtefacts({
                justify: e.target.value,
            });
        }
    }, '#justify');
    
    document.querySelector('#gradient').value = 'horizontal';
    document.querySelector('#justify').value = 'left';
  • ¶

    Development and testing

    console.log(scrawl.library);