From 32117d0bf27e0a72165707fe4e56d231136e734b Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Sat, 16 Jan 2010 17:50:43 +0100
Subject: Use index buffers to render tiles

---
 src/de/gamezock/metacraft/data/Triangle.java | 30 +++++++++++++++++++++++-----
 1 file changed, 25 insertions(+), 5 deletions(-)

(limited to 'src/de/gamezock/metacraft/data/Triangle.java')

diff --git a/src/de/gamezock/metacraft/data/Triangle.java b/src/de/gamezock/metacraft/data/Triangle.java
index bcfce9d..2049c6f 100644
--- a/src/de/gamezock/metacraft/data/Triangle.java
+++ b/src/de/gamezock/metacraft/data/Triangle.java
@@ -3,9 +3,10 @@ package de.gamezock.metacraft.data;
 import javax.vecmath.Point3f;
 import javax.vecmath.Vector3f;
 
-public class Triangle {
+public class Triangle implements Cloneable {
   private Point3f[] vertices;
   private Vector3f[] normals;
+  private Vector3f normal;
   
   
   public Triangle(Point3f v1, Point3f v2, Point3f v3) {
@@ -15,16 +16,15 @@ public class Triangle {
     vertices[1] = v2;
     vertices[2] = v3;
     
-    normals = new Vector3f[3];
-    
     Vector3f edge1 = new Vector3f(), edge2 = new Vector3f();
     edge1.sub(v1, v2);
     edge2.sub(v3, v2);
     
-    Vector3f normal = new Vector3f();
+    normal = new Vector3f();
     normal.cross(edge1, edge2);
     normal.normalize();
     
+    normals = new Vector3f[3];
     normals[0] = new Vector3f(normal);
     normals[1] = new Vector3f(normal);
     normals[2] = new Vector3f(normal);
@@ -34,7 +34,27 @@ public class Triangle {
     return vertices[i];
   }
   
-  public Vector3f getNormal(int i) {
+  public Vector3f getVertexNormal(int i) {
     return normals[i];
   }
+  
+  public Vector3f getNormal() {
+    return normal;
+  }
+  
+  public void translate(Vector3f v) {
+    for(Point3f p : vertices) {
+      p.add(v);
+    }
+  }
+  
+  public Object clone() {
+    Triangle t = new Triangle((Point3f)vertices[0].clone(), (Point3f)vertices[1].clone(), (Point3f)vertices[2].clone());
+    
+    for(int i = 0; i < 3; ++i) {
+      t.normals[i] = (Vector3f)normals[i].clone();
+    }
+    
+    return t;
+  }
 }
-- 
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