From: curt <curt>
Date: Wed, 28 May 2003 19:02:43 +0000 (+0000)
Subject: Make gen_surface_points accessible through the API.
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=8b8a82bb67eec2966872a3b02d0fe8c04b4159d9;p=simgear.git

Make gen_surface_points accessible through the API.
---

diff --git a/simgear/scene/tgdb/leaf.cxx b/simgear/scene/tgdb/leaf.cxx
index 0700ae20..e5cdd14a 100644
--- a/simgear/scene/tgdb/leaf.cxx
+++ b/simgear/scene/tgdb/leaf.cxx
@@ -66,8 +66,9 @@ static void random_pt_inside_tri( float *res,
 }
 
 
-static void gen_random_surface_points( ssgLeaf *leaf, ssgVertexArray *lights,
-                                       double factor ) {
+void sgGenRandomSurfacePoints( ssgLeaf *leaf, double factor, 
+                               ssgVertexArray *lights )
+{
     int tris = leaf->getNumTriangles();
     if ( tris > 0 ) {
         short int n1, n2, n3;
@@ -108,6 +109,13 @@ static void gen_random_surface_points( ssgLeaf *leaf, ssgVertexArray *lights,
 }
 
 
+ssgVertexArray *sgGenRandomSurfacePoints( ssgLeaf *leaf, double factor ) {
+    ssgVertexArray *result = new ssgVertexArray();
+    sgGenRandomSurfacePoints( leaf, factor, result );
+
+    return result;
+}
+
 
 ////////////////////////////////////////////////////////////////////////
 // Scenery loaders.
@@ -251,7 +259,7 @@ ssgLeaf *sgMakeLeaf( const string& path,
                        << coverage << ", pushing up to 10000");
                 coverage = 10000;
             }
-            gen_random_surface_points(leaf, lights, coverage);
+            sgGenRandomSurfacePoints(leaf, coverage, lights );
         }
     }
 
diff --git a/simgear/scene/tgdb/leaf.hxx b/simgear/scene/tgdb/leaf.hxx
index 772489b5..66fbdd1c 100644
--- a/simgear/scene/tgdb/leaf.hxx
+++ b/simgear/scene/tgdb/leaf.hxx
@@ -56,4 +56,14 @@ ssgLeaf *sgMakeLeaf( const string& path,
                      const bool calc_lights, ssgVertexArray *lights );
 
 
+// return a newly created list of points randomly spread across the
+// specified leaf.  "factor" specifies density ... on average there
+// will be one object per the area specified by "factor" in m^2 A
+// larger factor will mean fewer objects.
+ssgVertexArray *sgGenRandomSurfacePoints( ssgLeaf *leaf, double factor );
+
+// Another varient of the same routine.
+void sgGenRandomSurfacePoints( ssgLeaf *leaf, double factor, 
+                               ssgVertexArray *lights );
+
 #endif // _SG_LEAF_HXX