three
Version:
JavaScript 3D library
65 lines (33 loc) • 1.03 kB
JavaScript
let _canvas;
class ImageUtils {
static getDataURL( image ) {
if ( /^data:/i.test( image.src ) ) {
return image.src;
}
if ( typeof HTMLCanvasElement == 'undefined' ) {
return image.src;
}
let canvas;
if ( image instanceof HTMLCanvasElement ) {
canvas = image;
} else {
if ( _canvas === undefined ) _canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
_canvas.width = image.width;
_canvas.height = image.height;
const context = _canvas.getContext( '2d' );
if ( image instanceof ImageData ) {
context.putImageData( image, 0, 0 );
} else {
context.drawImage( image, 0, 0, image.width, image.height );
}
canvas = _canvas;
}
if ( canvas.width > 2048 || canvas.height > 2048 ) {
console.warn( 'THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image );
return canvas.toDataURL( 'image/jpeg', 0.6 );
} else {
return canvas.toDataURL( 'image/png' );
}
}
}
export { ImageUtils };