From 0221069740745f4357252b7bf4f652fd67f59566 Mon Sep 17 00:00:00 2001
From: stephengold <sgold@sonic.net>
Date: Tue, 7 Jan 2025 19:56:16 -0800
Subject: [PATCH] SoftBodyControl:  use MyMesh.trianglesToLines()

---
 .../jme3/bullet/control/SoftBodyControl.java  | 50 +------------------
 1 file changed, 2 insertions(+), 48 deletions(-)

diff --git a/MinieLibrary/src/main/java/com/jme3/bullet/control/SoftBodyControl.java b/MinieLibrary/src/main/java/com/jme3/bullet/control/SoftBodyControl.java
index 0b6832672..5815a090c 100644
--- a/MinieLibrary/src/main/java/com/jme3/bullet/control/SoftBodyControl.java
+++ b/MinieLibrary/src/main/java/com/jme3/bullet/control/SoftBodyControl.java
@@ -50,17 +50,13 @@
 import com.jme3.util.BufferUtils;
 import com.jme3.util.clone.Cloner;
 import java.io.IOException;
-import java.nio.Buffer;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
-import java.util.HashSet;
 import java.util.List;
-import java.util.Set;
 import java.util.logging.Logger;
 import jme3utilities.MyMesh;
 import jme3utilities.MySpatial;
 import jme3utilities.Validate;
-import jme3utilities.math.IntPair;
 import jme3utilities.math.MyMath;
 
 /**
@@ -406,7 +402,7 @@ private void appendFromGeometry() {
                 switch (useTriangles) {
                     case FacesAndLinks:
                         faces = mesh.getIndicesAsList();
-                        links = trianglesToLines(faces, numVertices);
+                        links = MyMesh.trianglesToLines(faces, numVertices);
                         break;
                     case FacesOnly:
                         faces = mesh.getIndicesAsList();
@@ -415,7 +411,7 @@ private void appendFromGeometry() {
                         break;
                     case LinksOnly:
                         faces = mesh.getIndicesAsList();
-                        links = trianglesToLines(faces, numVertices);
+                        links = MyMesh.trianglesToLines(faces, numVertices);
                         faces = null;
                         break;
                     default:
@@ -462,46 +458,4 @@ private void appendFromGeometry() {
         }
         body.applyTransform(meshToPhysics);
     }
-
-    /**
-     * Convert IndexBuffer triangles to lines. TODO move to the MyMesh class
-     *
-     * @param indexList the IndexBuffer to convert (not null, size a multiple of
-     * 3, unaffected)
-     * @param numVertices the number of vertices in the mesh (&gt;0)
-     * @return a new buffer
-     */
-    private static IndexBuffer trianglesToLines(
-            IndexBuffer indexList, int numVertices) {
-        Validate.nonNull(indexList, "index list");
-        Validate.require(
-                (indexList.size() % MyMesh.vpt) == 0, "size a multiple of 3");
-        Validate.positive(numVertices, "number of vertices");
-
-        int numTriangles = indexList.size() / MyMesh.vpt;
-        Set<IntPair> edgeSet = new HashSet<>(MyMesh.vpt * numTriangles);
-        for (int triIndex = 0; triIndex < numTriangles; ++triIndex) {
-            int intOffset = MyMesh.vpt * triIndex;
-            int ti0 = indexList.get(intOffset);
-            int ti1 = indexList.get(intOffset + 1);
-            int ti2 = indexList.get(intOffset + 2);
-
-            edgeSet.add(new IntPair(ti0, ti1));
-            edgeSet.add(new IntPair(ti0, ti2));
-            edgeSet.add(new IntPair(ti1, ti2));
-        }
-        int numEdges = edgeSet.size();
-        int numIndices = MyMesh.vpe * numEdges;
-
-        IndexBuffer result
-                = IndexBuffer.createIndexBuffer(numVertices, numIndices);
-        for (IntPair edge : edgeSet) {
-            result.put(edge.smaller());
-            result.put(edge.larger());
-        }
-        Buffer ibData = result.getBuffer();
-        ibData.flip();
-
-        return result;
-    }
 }