From 9ceff75afcbf6c446e75c1be6b4be1e62d543f3a Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Tue, 10 May 2011 23:38:40 +0200
Subject: Graph/Loop: More readable/verbose invert case; using Winding enum;
 ttf reader: Adding debug dump of font direction hint

---
 .../jogamp/graph/curve/tess/CDTriangulator2D.java  |  2 +-
 .../classes/com/jogamp/graph/math/VectorUtil.java  | 22 ++++++++++++++++++++--
 2 files changed, 21 insertions(+), 3 deletions(-)

(limited to 'src/jogl/classes/com/jogamp/graph')

diff --git a/src/jogl/classes/com/jogamp/graph/curve/tess/CDTriangulator2D.java b/src/jogl/classes/com/jogamp/graph/curve/tess/CDTriangulator2D.java
index 6130410d7..55bdbcd33 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/tess/CDTriangulator2D.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/tess/CDTriangulator2D.java
@@ -88,7 +88,7 @@ public class CDTriangulator2D {
             GraphOutline outline = new GraphOutline(polyline);
             GraphOutline innerPoly = extractBoundaryTriangles(outline, false);
             vertices.addAll(polyline.getVertices());
-            loop = new Loop(innerPoly, VectorUtil.CCW);
+            loop = new Loop(innerPoly, VectorUtil.Winding.CCW);
             loops.add(loop);
         }
         else {
diff --git a/src/jogl/classes/com/jogamp/graph/math/VectorUtil.java b/src/jogl/classes/com/jogamp/graph/math/VectorUtil.java
index afab69f79..aae7a8c5c 100755
--- a/src/jogl/classes/com/jogamp/graph/math/VectorUtil.java
+++ b/src/jogl/classes/com/jogamp/graph/math/VectorUtil.java
@@ -35,8 +35,16 @@ import com.jogamp.graph.geom.Vertex;
 
 public class VectorUtil {
 
-    public static final int CW = -1;
-    public static final int CCW = 1;
+    public enum Winding {
+        CW(-1), CCW(1);
+
+        public final int dir;
+
+        Winding(int dir) {
+            this.dir = dir;
+        }
+    } 
+        
     public static final int COLLINEAR = 0;
 
     /** compute the dot product of two points
@@ -290,6 +298,16 @@ public class VectorUtil {
         return triArea(a,b,c) > 0;
     }
 
+    /** Compute the winding of given points
+     * @param a first vertex
+     * @param b second vertex
+     * @param c third vertex
+     * @return Winding
+     */
+    public static Winding getWinding(Vertex a, Vertex b, Vertex c) {
+        return triArea(a,b,c) > 0 ? Winding.CCW : Winding.CW ;
+    }
+
     /** Computes the area of a list of vertices to check if ccw
      * @param vertices
      * @return positve area if ccw else negative area value
-- 
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