115 lines
2.6 KiB
JavaScript
115 lines
2.6 KiB
JavaScript
import CellSet;
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return {
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step: step
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};
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function step(matrix) {
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var zones = getZones(matrix);
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var grid = getGrid(matrix.length);
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var rowClusters = checkRowsInclusions(matrix);
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if(rowClusters.length > 0) {
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rowClusters.forEach(function(rowCluster) {
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rowCluster.toClear = difference(
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rowCluster.colors.map(function(color) {return zones[color];}),
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rowCluster.rows.map(function(row) {return grid.rows[row];})
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);
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});
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}
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return rowClusters;
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}
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function getZones(matrix) {
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var zones = {};
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for(var row = 0; row < matrix.length; row++) {
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for(var column = 0; column < matrix[row].length; column++) {
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var color = matrix[row][column];
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if(zones[color] == undefined) {
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zones[color] = CellSet.make(
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{type: 'isochrome', row: row, column: column, data: matrix}
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);
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}
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}
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}
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return zones;
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}
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function line(type, size, i) {
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if(type == 'row') {
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return CellSet.make(
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{type: 'rectangle', row: i, column: 0, width: size, height: 1}
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);
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} else if(type == 'column') {
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return CellSet.make(
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{type: 'rectangle', row: 0, column: i, width: 1, height: size}
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);
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}
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}
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function getGrid(size) {
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var empty = Array.from({length: size});
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return {
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rows: empty.map(function(x, i) {return line('row', size, i);}),
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columns: empty.map(function(x, i) {return line('column', size, i);}),
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};
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}
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function getColorsByRow(matrix) {
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var colorsByRow = [];
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for(var row = 0; row < matrix.length; row++) {
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colorsByRow.push(
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quotient(matrix[row], function(c0, c1) {return c0 == c1;}).map(
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function(colorClass) {return colorClass.specimen;}
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)
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);
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}
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return colorsByRow;
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}
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function checkRowsInclusions(matrix) {
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var colorsByRow = getColorsByRow(matrix);
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var colorSets = quotient(colorsByRow, sameColorsSet);
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return colorSets.reduce(function(commands, colorSet) {
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if(colorSet.occurrences.length == colorSet.specimen.length) {
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commands.push({
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reason: 'rowsInColors',
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rows: colorSet.occurrences,
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colors: colorSet.specimen
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});
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}
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return commands;
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}, []);
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}
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function quotient(elements, equivalence) {
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var classes = [];
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elements.forEach(function(element, i) {
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for(var c = 0; c < classes.length; c++) {
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if(equivalence(element, classes[c].specimen)) {
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classes[c].occurrences.push(i);
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return;
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}
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}
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classes.push({specimen: element, occurrences: [i]});
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});
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return classes;
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}
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function sameColorsSet(s0, s1) {
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if(s0.length != s1.length) {
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return false;
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}
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var o0 = {};
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s0.forEach(function(x) {o0[x] = true;});
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for(var i = 0; i < s1.length; i++) {
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if(!o0[s1[i]]) {
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return false;
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}
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}
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return true;
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}
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function difference(setsFrom, setsSubstracted) {
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return CellSet.union(setsFrom).difference(CellSet.union(setsSubstracted));
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}
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