Feature/decimation

Processing/nbproject/project.xml

@@ -115,6 +115,7 @@
             <public-packages>
                 <package>cz.fidentis.gui</package>
                 <package>cz.fidentis.processing.comparison.surfaceComparison</package>
+                <package>cz.fidentis.processing.decimation</package>
                 <package>cz.fidentis.processing.exportProcessing</package>
                 <package>cz.fidentis.processing.featurePoints</package>
                 <package>cz.fidentis.processing.fileUtils</package>

Processing/src/cz/fidentis/processing/decimation/Edge.java

@@ -0,0 +1,53 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package cz.fidentis.processing.decimation;
+
+/**
+ * Simple wrapper that identifies a valid pair for edge collapse.
+ * @author Marek Zuzi
+ */
+public class Edge {
+    private int from;
+    private int to;
+
+    public Edge(int from, int to) {
+        this.from = from;
+        this.to = to;
+    }
+
+    public int getFrom() {
+        return from;
+    }
+
+    public int getTo() {
+        return to;
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 5;
+        int addition = from + to;
+        hash = 73 * hash + addition;
+        return hash;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final Edge other = (Edge) obj;
+        return (this.from == other.from && this.to == other.to) || (this.from == other.to && this.to == other.from);
+    }
+
+
+}

Processing/src/cz/fidentis/processing/decimation/EdgeComparator.java

@@ -0,0 +1,40 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package cz.fidentis.processing.decimation;
+
+import java.util.Comparator;
+import java.util.Map;
+
+/**
+ *
+ * @author Marek Zuzi
+ */
+public class EdgeComparator implements Comparator<Edge> {
+    private static final double EPS = 0.00001d;
+    private Map<Edge, Double> weights;
+
+    public EdgeComparator(Map<Edge, Double> weights) {
+        this.weights = weights;
+    }
+
+
+
+    @Override
+    public int compare(Edge o1, Edge o2) {
+        double w1 = weights.get(o1);
+        double w2 = weights.get(o2);
+
+        if(Math.abs(w1 - w2) < EPS) {
+            return 0;
+        }
+
+        if(w1 < w1) {
+            return 1;
+        } else {
+            return -1;
+        }
+    }
+}