swim/fold_slice
1
0
Fork 0
mirror of https://github.com/c-sooyoung/fold_slice.git synced 2026-09-17 21:49:08 +09:00
Code Issues Packages Projects Releases Wiki Activity

initial commit

Browse Source
This commit is contained in:
swim
2026-08-07 15:56:42 +09:00
commit 91ad25aca9
1012 changed files with 159314 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
ptycho/utils/compose_affine_matrix.m
+25
View File
@@ -0,0 +1,25 @@
% COMPOSE_AFFINE_MATRIX calculate affine matrix when provided rotation, shear, asymmetry and scale
%
% affine_mat = compose_affine_matrix(scale, asymmetry, rotation, shear)
%
% Inputs:
% **scale A1 = [scale, 0; 0, scale]
% **asymmetry A2 = [1+asymmetry/2,0; 0,1-asymmetry/2]
% **rotation A3 = [cosd(rotation), sind(rotation); -sind(rotation), cosd(rotation)]
% **shear A4 = [1,0;tand(shear),1];
%
% returns:
% ++ affine_mat affine matrix = A1*A2*A3*A4
function affine_mat = compose_affine_matrix(scale, asymmetry, rotation, shear)
if isscalar(scale) && isscalar(asymmetry) && isscalar(rotation) && isscalar(shear)
affine_mat = scale(1)*[1+asymmetry/2,0; 0,1-asymmetry/2]*[cosd(rotation), sind(rotation); -sind(rotation), cosd(rotation)] * [1,0;tand(shear),1];
else
for ii = 1:max([numel(scale), numel(asymmetry), numel(rotation), numel(shear)])
affine_mat(:,:,ii) = scale(min(ii,end))*...
[1+asymmetry(min(ii,end))/2,0; 0,1-asymmetry(min(ii,end))/2]*...
[cosd(rotation(min(ii,end))), sind(rotation(min(ii,end))); -sind(rotation(min(ii,end))), cosd(rotation(min(ii,end)))] *...
[1,0;tand(shear(min(ii,end))),1];
end
end
end