[英]fabric.js disable drawing on black pixel
您可以將圖像用作疊加層。請在此處查看: http : //jsfiddle.net/mariusturcu93/s5wxbcde/19/
JS
var canvas = new fabric.Canvas('canvas');
canvas.backgroundColor = "blue";
canvas.isDrawingMode=1;
canvas.setOverlayImage('https://vignette.wikia.nocookie.net/fantendo/images/6/6e/Small-mario.png/revision/latest/scale-to-width-down/381?cb=20120718024112', canvas.renderAll.bind(canvas), {
width: canvas.width,
height: canvas.height
});
HTML
<canvas id="canvas" width="800" height="800"></canvas>
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