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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 020

    Testing createImageFromXXX functionality

  • ¶

    Run code

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

    Scene setup

    let canvas = scrawl.library.artefact.mycanvas,
        hold = scrawl.library.artefact.holdcanvas;
    
    canvas.set({
        fit: 'fill',
        backgroundColor: 'lightgray',
        css: {
            border: '1px solid black'
        }
    });
  • ¶

    Create gradients

    scrawl.makeGradient({
        name: 'linear1',
        endX: '100%',
    })
    .updateColor(0, 'pink')
    .updateColor(999, 'darkgreen');
    
    scrawl.makeGradient({
        name: 'linear2',
        endX: '100%',
    })
    .updateColor(0, 'darkblue')
    .updateColor(999, 'white');
    
    scrawl.makeGradient({
        name: 'linear3',
        endX: '100%',
    })
    .updateColor(0, 'yellow')
    .updateColor(999, 'purple');
    
    scrawl.makeGradient({
        name: 'linear4',
        endX: '100%',
    })
    .updateColor(0, 'black')
    .updateColor(999, 'coral');
  • ¶

    Create entitys

    let block1 = scrawl.makeBlock({
        name: 'b1',
        group: canvas.base.name,
    
        width: '70%',
        height: '70%',
        startX: '5%',
        startY: '5%',
    
        fillStyle: 'linear1',
        lockFillStyleToEntity: true,
        strokeStyle: 'coral',
        lineWidth: 4,
        method: 'fillThenDraw',
    });
    
    let block2 = block1.clone({
        name: 'b2',
        startX: '70%',
        startY: '65%',
        handleX: 'center',
        handleY: 'center',
        scale: 0.5,
        fillStyle: 'linear2',
        strokeStyle: 'red',
    
        delta: {
            roll: -0.5
        },
        order: 1,
    });
    
    let wheel1 = scrawl.makeWheel({
        name: 'w1',
        group: canvas.base.name,
    
        radius: '15%',
        startX: '80%',
        startY: '30%',
        handleX: 'center',
        handleY: 'center',
        fillStyle: 'linear3',
        lockFillStyleToEntity: true,
        strokeStyle: 'orange',
        lineWidth: 4,
        method: 'fillThenDraw',
    });
    
    let wheel2 = wheel1.clone({
        name: 'w2',
        startX: '30%',
        startY: '60%',
        handleX: '-10%',
        handleY: 'center',
        scale: 0.7,
        fillStyle: 'linear4',
        strokeStyle: 'lightblue',
    
        delta: {
            roll: 1
        },
        order: 1,
    });
  • ¶

    Create the filter

    scrawl.makeFilter({
        name: 'invert',
        method: 'invert',
    });
  • ¶

    Create a new group with an entity that will only be caught in the Cell’s filter

    scrawl.makeGroup({
        name: 'temp-group',
        host: canvas.base.name
    });
    
    scrawl.makeBlock({
        name: 'temp-block',
        group: 'temp-group',
    
        start: [50,50],
        dimensions: [40, 40],
        fillStyle: 'red',
    });
  • ¶

    Functionality to capture cell, group and entity images

    let captureImages = false;
    
    let imageCapture = function () {
    
        if (captureImages) {
    
            scrawl.createImageFromCell(canvas, true);
            scrawl.createImageFromGroup(canvas, true);
            scrawl.createImageFromEntity(block1, true);
            scrawl.createImageFromEntity(block2, true);
            scrawl.createImageFromEntity(wheel1, true);
            scrawl.createImageFromEntity(wheel2, true);
    
            captureImages = false;
        }
    };
  • ¶

    Add Picture entitys to the hold canvas, using the assets we will create from the main canvas

    scrawl.makePicture({
    
        name: 'cell-image',
        group: hold.base.name,
    
        width: '13%',
        height: '76%',
    
        startX: '3%',
        startY: '2%',
    
        asset: 'mycanvas_base-image',
        copyWidth: '100%',
        copyHeight: '100%',
    
        lineWidth: 2,
        lineDash: [6, 4],
        strokeStyle: 'red',
    
        method: 'drawThenFill',
    
    }).clone({
    
        name: 'group-image',
        asset: 'mycanvas_base-groupimage',
        startX: '19%',
    
    }).clone({
    
        name: 'b1-image',
        asset: 'b1-image',
        startX: '35%',
    
    }).clone({
    
        name: 'b2-image',
        asset: 'b2-image',
        startX: '51%',
    
    }).clone({
    
        name: 'w1-image',
        asset: 'w1-image',
        startX: '67%',
    
    }).clone({
    
        name: 'w2-image',
        asset: 'w2-image',
        startX: '83%',
    });
  • ¶

    Give the hold Picture entitys some labels

    scrawl.makePhrase({
    
        name: 'cell-phrase',
        group: hold.base.name,
    
        text: 'Cell',
        font: '15px Arial, sans-serif',
    
        startY: '85%',
        pivot: 'cell-image',
        lockXTo: 'pivot',
    
    }).clone({
    
        name: 'group-phrase',
        text: 'Group',
        pivot: 'group-image',
    
    }).clone({
    
        name: 'b1-phrase',
        text: 'Block1',
        pivot: 'b1-image',
        
    }).clone({
    
        name: 'b2-phrase',
        text: 'Block2',
        pivot: 'b2-image',
        
    }).clone({
    
        name: 'w1-phrase',
        text: 'Wheel1',
        pivot: 'w1-image',
        
    }).clone({
    
        name: 'w2-phrase',
        text: 'Wheel2',
        pivot: 'w2-image',
    });
  • ¶

    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 - note that the render is not targeted, thus will run document-wide to act on both <canvas> elements

    scrawl.makeRender({
    
        name: 'demo-animation',
  • ¶

    The Display cycle needs to run once before the entitys, Group and Cell are ready to have their images captured

        afterCreated: () => captureImages = true,
        
        commence: imageCapture,
        afterShow: report,
    });
  • ¶

    User interaction

    Event listeners

    let events = function () {
    
        let base = canvas.base,
            group = scrawl.library.group[base.name],
            currentTarget;
    
        return function (e) {
    
            e.preventDefault();
            e.returnValue = false;
    
            let val = e.target.value;
    
            if (val !== currentTarget) {
    
                currentTarget = val;
    
                base.clearFilters();
                group.clearFilters();
                group.clearFiltersFromEntitys();
    
                switch (currentTarget) {
    
                    case 'block1' :
                        block1.addFilters('invert');
                        break;
    
                    case 'block2' :
                        block2.addFilters('invert');
                        break;
    
                    case 'wheel1' :
                        wheel1.addFilters('invert');
                        break;
    
                    case 'wheel2' :
                        wheel2.addFilters('invert');
                        break;
    
                    case 'group' :
                        group.addFilters('invert');
                        break;
    
                    case 'cell' :
                        base.addFilters('invert');
                        break;
                }
    
                captureImages = true;
            }
        };
    }();
    scrawl.addNativeListener(['input'], events, '.controlItem');
  • ¶

    Set the DOM input values

    document.querySelector('#target').value = '';
  • ¶

    Development and testing

    console.log(scrawl.library);