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canvas-diff.js
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canvas-diff.js
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function diffToCanvas( diff ) {
var canvas = document.createElement( 'canvas' );
canvas.width = diff.width;
canvas.height = diff.height;
var context = canvas.getContext( '2d' );
diff.draw( context );
return canvas;
}
function demoPath( context, width, height, drawPath, dashes ) {
context.save();
context.fillStyle = '#000000';
context.fillRect( 0, 0, width, height );
context.restore();
context.save();
context.globalCompositeOperation = 'lighter';
if ( dashes ) {
// var dash = [ 2, 2 ];
// var dash = [ 1, 20 ];
// var dash = [ 0.1, 0.1 ];
// var dash = [ 0.01, 0.01 ];
if ( context.setLineDash ) {
context.setLineDash( dashes );
} else if ( context.mozDash !== undefined ) {
context.mozDash = dashes;
}
}
context.beginPath();
context.lineWidth = 30;
drawPath();
context.lineCap = 'square';
context.strokeStyle = 'rgba(0,0,255,1)';
context.stroke();
context.lineCap = 'round';
context.strokeStyle = 'rgba(0,255,0,1)';
context.stroke();
context.lineCap = 'butt';
context.strokeStyle = 'rgba(255,0,0,1)';
context.stroke();
context.globalCompositeOperation = 'source-over';
context.fillStyle = 'rgba(127,127,127,0.5)';
context.fill();
context.lineWidth = 1;
context.strokeStyle = '#ff0000';
context.stroke();
context.restore();
}
function zig( context, x, y, count, height, space, offset ) {
var i;
context.save();
context.beginPath();
context.fillStyle = '#ffffff';
context.translate( x, y );
context.moveTo( 0, 0 );
for ( i = 0; i < count; i++ ) {
context.lineTo( space * ( i - 0.5 ), height );
context.lineTo( space * i, 0 );
}
for ( i = count - 1; i >= 0; i-- ) {
context.lineTo( space * i, offset );
context.lineTo( space * ( i - 0.5 ), height + offset );
}
context.fill();
context.restore();
}
function zag( context, x, y, count, height, space, offset ) {
var i;
context.save();
context.beginPath();
context.fillStyle = '#ff0000';
context.translate( x, y );
context.moveTo( 0, 0 );
for ( i = 0; i < count; i++ ) {
context.quadraticCurveTo( space * ( i - 0.5 ), height, space * i, 0 );
}
for ( i = count - 1; i >= 0; i-- ) {
context.quadraticCurveTo( space * i, offset, space * ( i - 0.5 ), height + offset );
}
context.fill();
context.restore();
}
var browsers = [];