source: branches/autoquest-core-tasktrees-alignment/src/main/java/de/ugoe/cs/autoquest/tasktrees/alignment/matrix/DynamicTriangleMatrix.java @ 1717

package de.ugoe.cs.autoquest.tasktrees.alignment.matrix;

import java.util.ArrayList;

//Must be initialized!
public class DynamicTriangleMatrix implements ITriangleMatrix {
        
        private ArrayList<Float> matrix;
        protected int size;
        private float initalizationValue;
        
        
        
        //Increases the size
        /* (non-Javadoc)
         * @see de.ugoe.cs.autoquest.tasktrees.alignment.matrix.ITriangleMatrix#increaseSize(int)
         */
        @Override
        public void increaseSize(int count) {
                int oldsize = size;
                this.size += count;
                matrix.ensureCapacity(size*(size+1/2));
                for(int i=0;i<(oldsize*count)+(count*(count+1)/2);i++) {
                        matrix.add(this.initalizationValue);
                }
        }


        public DynamicTriangleMatrix(int size) {
                this.size = size;
                matrix = new ArrayList<Float>();
                matrix.ensureCapacity(size*(size+1/2));
        }

        
        /* (non-Javadoc)
         * @see de.ugoe.cs.autoquest.tasktrees.alignment.matrix.ITriangleMatrix#get(int, int)
         */
        @Override
        public float get(int first, int second) {
                int row = Math.min(first, second);
                int col = Math.max(first, second);
                return matrix.get(row*size-(row*(row+1)/2 - (size-col)));
                
        }
        
        /* (non-Javadoc)
         * @see de.ugoe.cs.autoquest.tasktrees.alignment.matrix.ITriangleMatrix#set(int, int, float)
         */
        @Override
        public void set(int first, int second, float value) {
                int row = Math.min(first, second);
                int col = Math.max(first, second);
                matrix.set(row*size-(row*(row+1)/2 - (size-col)),value);
        }

        /* (non-Javadoc)
         * @see de.ugoe.cs.autoquest.tasktrees.alignment.matrix.ITriangleMatrix#initialize(float)
         */
        @Override
        public void initialize(float value) {
                this.initalizationValue = value;
                matrix.clear();
                for (int i=0; i < this.size*(this.size+1)/2; i++) {
                        matrix.add(value);
                }
        }
        
        
        /* (non-Javadoc)
         * @see de.ugoe.cs.autoquest.tasktrees.alignment.matrix.ITriangleMatrix#toString()
         */
        @Override
        public String toString() {
                String result = "";
                for (int i = 0; i < size; i++) {
                        for(int j = 0; j< size; j++) {
                                if(i<j) {
                                        if(Float.isInfinite(this.get(i,j))) {
                                                result = result + " -------";
                                        }
                                        else {
                                                result = result + String.format("%+8.2f",this.get(i,j));
                                        }
                                }
                                else {
                                        result = result + ("        ");
                                }
                        }
                        result = result + "\n";
                }
                return result;
        }


        @Override
        public int size() {
                return size;
        }
}