Sakurai/pdf.js
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Reduce math for color key mask.

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Brendan Dahl 2012-08-29 09:36:12 -07:00
parent 19fa6a5260
commit d26ecff294
1 changed files with 6 additions and 3 deletions
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9
src/image.js
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@ -320,11 +320,14 @@ var PDFImage = (function PDFImageClosure() {
// Color key mask: if any of the compontents are outside the range // Color key mask: if any of the compontents are outside the range
// then they should be painted. // then they should be painted.
buf = new Uint8Array(width * height); buf = new Uint8Array(width * height);
var numComps = this.numComps;
for (var i = 0, ii = width * height; i < ii; ++i) { for (var i = 0, ii = width * height; i < ii; ++i) {
var opacity = 0; var opacity = 0;
for (var j = 0; j < this.numComps; ++j) { var imageOffset = i * numComps;
var color = image[i * this.numComps + j]; for (var j = 0; j < numComps; ++j) {
if (color < mask[j * 2] || color > mask[j * 2 + 1]) { var color = image[imageOffset + j];
var maskOffset = j * 2;
if (color < mask[maskOffset] || color > mask[maskOffset + 1]) {
opacity = 255; opacity = 255;
break; break;
} }