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Commit 47d86230 authored by Chris Craik's avatar Chris Craik
Browse files

Fix nine patch outline radius computation 

bug:16852714
Change-Id: I475154c0f324fd2e2c8991415e0d8240c75663d8
parent 1e1a01b0

tools/aapt/Images.cpp

+7 −3
Original line number Diff line number Diff line
@@ -485,9 +485,13 @@ static void get_outline(image_info* image) 
    find_max_opacity(image->rows, innerStartX, innerStartY, innerMidX, innerMidY, 1, 1,

            &diagonalInset);



    // Determine source radius based upon inset

    // radius = 1 / (sqrt(2) - 1) * inset

    image->outlineRadius = 2.4142f * diagonalInset;

    /* Determine source radius based upon inset:

     *     sqrt(r^2 + r^2) = sqrt(i^2 + i^2) + r

     *     sqrt(2) * r = sqrt(2) * i + r

     *     (sqrt(2) - 1) * r = sqrt(2) * i

     *     r = sqrt(2) / (sqrt(2) - 1) * i

     */

    image->outlineRadius = 3.4142f * diagonalInset;



    NOISY(printf("outline insets %d %d %d %d, rad %f, alpha %x\n",

            image->outlineInsetsLeft,