begin multidoku display code

app/src/main/java/gui/RenderableMultidoku.java

@@ -0,0 +1,134 @@
+package gui;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import sudoku.structure.Block;
+import sudoku.structure.Cell;
+import sudoku.structure.Coordinate;
+import sudoku.structure.MultiDoku;
+import sudoku.structure.Sudoku;
+
+public class RenderableMultidoku {
+
+	private final List<Cell> cells;
+	private final List<Block> blocks;
+	private final int width;
+	private final int height;
+
+	public RenderableMultidoku(List<Block> blocks, List<Cell> cells, int width, int height) {
+		this.cells = cells;
+		this.blocks = blocks;
+		this.width = width;
+		this.height = height;
+	}
+
+	public int getWidth() {
+		return width;
+	}
+
+	public int getHeight() {
+		return height;
+	}
+
+	public List<Block> getBlocks() {
+		return this.blocks;
+	}
+
+	public Cell getCell(int x, int y) {
+		return getCell(y * width + x);
+	}
+
+	public Cell getCell(int index) {
+		return cells.get(index);
+	}
+
+	public boolean setCellValue(int x, int y, int value) {
+		return false;
+	}
+
+	private static record PositionConstraint(Sudoku sudoku1, Sudoku sudoku2, Coordinate offset) {
+	}
+
+	private static Coordinate getConstraint(Sudoku sudoku1, Sudoku sudoku2) {
+		for (int i = 0; i < sudoku1.getSize(); i++) {
+			for (int j = 0; j < sudoku2.getSize(); j++) {
+				Block block1 = sudoku1.getBlocks().get(i);
+				Block block2 = sudoku2.getBlocks().get(j);
+				if (block1 == block2) {
+					int block1X = 0;
+					int block1Y = 0;
+					int block2X = 0;
+					int block2Y = 0;
+					return new Coordinate(block1X - block2X, block1Y - block2Y);
+				}
+			}
+		}
+		return null;
+	}
+
+	private static boolean hasContraint(Sudoku sudoku1, Sudoku sudoku2, List<PositionConstraint> positionConstraints) {
+		for (PositionConstraint constraint : positionConstraints) {
+			if ((constraint.sudoku1 == sudoku1 && constraint.sudoku2 == sudoku2)
+					|| (constraint.sudoku1 == sudoku2 && constraint.sudoku2 == sudoku1))
+				return true;
+		}
+		return false;
+	}
+
+	private static Coordinate getMinSudokuOffset(Map<Sudoku, Coordinate> sudokusOffset) {
+		// TODO
+		return null;
+	}
+
+	public static RenderableMultidoku fromMultidoku(MultiDoku doku) {
+		if (doku.getNbSubGrids() == 1) {
+			Sudoku sudoku = doku.getSubGrid(0);
+			return new RenderableMultidoku(sudoku.getBlocks(), sudoku.getCells(), sudoku.getSize(), sudoku.getSize());
+		}
+		Map<Sudoku, Coordinate> sudokusOffset = new HashMap<>();
+		List<PositionConstraint> positionConstraints = new ArrayList<>();
+		for (Sudoku sudoku1 : doku.getSubGrids()) {
+			for (Sudoku sudoku2 : doku.getSubGrids()) {
+				if (sudoku1 == sudoku2)
+					continue;
+
+				Coordinate constraint = getConstraint(sudoku1, sudoku2);
+
+				if (constraint != null && !hasContraint(sudoku1, sudoku2, positionConstraints)) {
+					positionConstraints.add(new PositionConstraint(sudoku1, sudoku2, constraint));
+				}
+			}
+		}
+
+		for (PositionConstraint constraint : positionConstraints) {
+			if (!sudokusOffset.containsKey(constraint.sudoku1) && !sudokusOffset.containsKey(constraint.sudoku2)) {
+				sudokusOffset.put(constraint.sudoku1, new Coordinate(0, 0));
+				sudokusOffset.put(constraint.sudoku2, constraint.offset());
+			}
+
+			if (sudokusOffset.containsKey(constraint.sudoku1)) {
+				sudokusOffset.put(constraint.sudoku2, constraint.offset.add(sudokusOffset.get(constraint.sudoku1)));
+			} else {
+				sudokusOffset.put(constraint.sudoku1, constraint.offset.add(sudokusOffset.get(constraint.sudoku2)));
+			}
+
+		}
+
+		Coordinate minCoordinate = getMinSudokuOffset(sudokusOffset);
+
+		for (var entry : sudokusOffset.entrySet()) {
+			entry.setValue(entry.getValue().sub(minCoordinate));
+		}
+
+		List<Block> blocks = new ArrayList<>();
+		List<Cell> cells = new ArrayList<>();
+
+		// TODO: dernière étape
+
+		return new RenderableMultidoku(blocks, cells, 0, 0);
+	}
+
+}