function prepareMesh2(o)

if ~o.available.transmural

    o.computeTransmural;

end

o.printStatus('Preparing mesh 2...');

t = toc;

isovalue = 0.5;

numTries = 5;

for i = 1:numTries

    [o.m2.vol,mmgStatus,mmgOutput2] = mmg(o.m1.vol, o.m1.ridgeLaplace, sprintf('-ls %1.5e -nr -hausd %1.5e -hmin %1.5e -hmax %1.5e', isovalue, o.cfg.mmgSizingParam(:)'*o.m0.meanEdgLen));

    if o.cfg.exportLevel > 1 || mmgStatus ~= 0

        if i == 1

            fid = fopen(sprintf('%smmgOutput2.txt', o.cfg.outPrefix), 'w');

        else

            fid = fopen(sprintf('%smmgOutput2.txt', o.cfg.outPrefix), 'a');

        end

        fprintf(fid, '%s', mmgOutput2);

        fclose(fid);

    end

    if mmgStatus == 0

        break;

    elseif i < numTries

        warning('Mmg remeshing with an isovalue of %.3f failed (system command status %i). Trying again with a slightly larger isovalue.', isovalue, mmgStatus);

        isovalue = isovalue + 0.1*prctile(max(o.m1.ridgeLaplace(o.m1.vol.cells),[],2)-min(o.m1.ridgeLaplace(o.m1.vol.cells),[],2),95);

        o.cfg.mmgSizingParam(1) = 0.8*o.cfg.mmgSizingParam(1);

    else

        error('Mmg remeshing failed ultimately after trying %i different isovalues (system command status %i).', numTries, mmgStatus);

    end

end

o.m2.sur = vtkDataSetSurfaceFilter(vtkDeleteDataArrays(o.m2.vol));

o.m2.sur = vtkArrayMapperNearestNeighbor(o.m0.sur, o.m2.sur);

o.m2.surToVol = vtkMapPointIds(o.m2.vol, o.m2.sur);

P2 = double(o.m2.vol.points);

C2 = double(o.m2.vol.cells);

o.m2.L = cotmatrix(P2, C2);

o.m2.G = grad(P2, C2);

o.m2.M = baryInterpMat(P2, C2, o.m0.vol.points);

if o.cfg.exportLevel > 1

    o.m2.debug = o.m2.vol;

    o.m2.debug.pointData.surClass = repmat(uint8(0),size(o.m2.debug.points,1),1);

    o.m2.debug.pointData.surClass(o.m2.surToVol) = o.m2.sur.pointData.class;

end

o.printStatus(sprintf('%.1f seconds\n', toc-t), true);

o.available.mesh2 = true;

end