diff +grid/boundaryOptimized.m @ 1297:e53b1e25970a feature/boundary_optimized_grids

Change +sbp/+util/ to +sbp/+grid and change function names to camel case
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Tue, 07 Jul 2020 16:08:08 +0200
parents +grid/boundaryoptimized.m@2853b655c172
children 7df63b17e078
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/+grid/boundaryOptimized.m	Tue Jul 07 16:08:08 2020 +0200
@@ -0,0 +1,54 @@
+% Creates a Cartesian grid of dimension length(m)
+% over the domain xlim, ylim, ...
+% The grid is non-equidistant in the boundary regions,
+% with node placement based on boundary-optimized SBP operators.
+% Examples:
+%   g = grid.boundaryOptimized([mx, my], xlim, ylim, order, opt)
+%   g = grid.boundaryOptimized([10, 15], {0,1}, {0,2}, 4) - defaults to 'accurate' stencils
+%   g = grid.boundaryOptimized([10, 15], {0,1}, {0,2}, 4, 'minimal')
+function g = boundaryOptimized(m, varargin)
+    n = length(m);
+
+    % Check that parameters matches dimensions
+    matchingParams = false;
+    if length(varargin) == n+1 % Minimal number of arguments
+            matchingParams = iscell([varargin{1:n}]) && ...
+                             isfloat([varargin{n+1}]);
+    elseif length(varargin) == n+2 % Stencil options supplied
+            matchingParams = iscell([varargin{1:n}]) && ...
+                             isfloat([varargin{n+1}]) && ...
+                             ischar([varargin{n+2}]);
+    end
+    assert(matchingParams,'grid:boundaryOptimized:NonMatchingParameters','The number of parameters per dimensions do not match.');
+
+    % Check that stencil options are passed correctly (if supplied)
+    if length(varargin) == n+2 % Stencil options supplied
+        availabe_opts = ["Accurate","accurate","A","Minimal","minimal","M"];
+        assert(any(varargin{n+2} == availabe_opts), ...
+            'grid:boundaryOptimized:InvalidOption',"The operator option must be 'accurate' or 'minimal.'");
+    else %If not passed, populate varargin with default option 'accurate'
+        varargin(n+2) = {'accurate'};
+    end
+
+    % Specify generating function
+    switch varargin{n+2}
+        case {'Accurate','accurate','A'}
+            gridgenerator = @sbp.grid.accurateBoundaryOptimizedGrid;
+        case {'Minimal','minimal','M'}
+            gridgenerator = @sbp.grid.minimalBoundaryOptimizedGrid;
+    end
+
+    X = {};
+    h = [];
+    for i = 1:n
+        try
+            [X{i},h(i)] = gridgenerator(varargin{i},m(i),varargin{n+1});
+        catch exception % Propagate any errors in the grid generation functions.
+            msgText = getReport(exception);
+            error('grid:boundaryOptimized:InvalidParameter',msgText)
+        end
+    end
+
+    g = grid.Cartesian(X{:});
+    g.h = h;
+end
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