]> git.mxchange.org Git - flightgear.git/blobdiff - src/Objects/obj.cxx
Moved random ground cover object management code (userdata.[ch]xx) over
[flightgear.git] / src / Objects / obj.cxx
index ebdda8144d4c2ff7c22af47cafe17ace49832698..385398b77b28bfdcf77062aba861131834572c03 100644 (file)
@@ -1,4 +1,4 @@
-// obj.hxx -- routines to handle loading scenery and building the plib
+// obj.cxx -- routines to handle loading scenery and building the plib
 //            scene graph.
 //
 // Written by Curtis Olson, started October 1997.
 // $Id$
 
 
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#ifdef SG_MATH_EXCEPTION_CLASH
-#  include <math.h>
-#endif
-
-#include <stdio.h>
-#include <string.h>
+// #ifdef HAVE_CONFIG_H
+// #  include <config.h>
+// #endif
 
 #include <simgear/compiler.h>
-#include <simgear/sg_inlines.h>
-#include <simgear/io/sg_binobj.hxx>
 
 #include STL_STRING
-#include <map>                  // STL
-#include <vector>               // STL
-#include <ctype.h>              // isdigit()
-
-#include <simgear/constants.h>
-#include <simgear/debug/logstream.hxx>
-#include <simgear/math/point3d.hxx>
-#include <simgear/math/polar3d.hxx>
+
+#include <simgear/bucket/newbucket.hxx>
+#include <simgear/io/sg_binobj.hxx>
 #include <simgear/math/sg_geodesy.hxx>
-#include <simgear/math/sg_random.h>
-#include <simgear/math/vector.hxx>
-#include <simgear/misc/sgstream.hxx>
-#include <simgear/misc/stopwatch.hxx>
+#include <simgear/math/sg_types.hxx>
 #include <simgear/misc/texcoord.hxx>
+#include <simgear/scene/material/mat.hxx>
+#include <simgear/scene/material/matlib.hxx>
+#include <simgear/scene/tgdb/leaf.hxx>
+#include <simgear/scene/tgdb/pt_lights.hxx>
+#include <simgear/scene/tgdb/userdata.hxx>
 
-#include <Main/globals.hxx>
-#include <Main/fg_props.hxx>
-#include <Time/light.hxx>
-#include <Scenery/tileentry.hxx>
-
-#include "newmat.hxx"
-#include "matlib.hxx"
-#include "pt_lights.hxx"
 #include "obj.hxx"
 
 SG_USING_STD(string);
-SG_USING_STD(vector);
-
-
-typedef vector < int > int_list;
-typedef int_list::iterator int_list_iterator;
-typedef int_list::const_iterator int_point_list_iterator;
-
-
-// not used because plib branches don't honor call backs.
-static int
-runway_lights_pretrav (ssgEntity * e, int mask)
-{
-                                // Turn on lights only at night
-    float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
-    return int((sun_angle > 85.0) ||
-               (fgGetDouble("/environment/visibility-m") < 5000.0));
-}
 
 
 // Generate an ocean tile
 bool fgGenTile( const string& path, SGBucket b,
-                      Point3D *center,
-                      double *bounding_radius,
-                      ssgBranch* geometry )
+                Point3D *center, double *bounding_radius,
+                SGMaterialLib *matlib, ssgBranch* geometry )
 {
-    FGNewMat *newmat;
-
     ssgSimpleState *state = NULL;
 
-    geometry -> setName ( (char *)path.c_str() ) ;
+    geometry->setName( (char *)path.c_str() );
 
     double tex_width = 1000.0;
     // double tex_height;
 
     // find Ocean material in the properties list
-    newmat = material_lib.find( "Ocean" );
-    if ( newmat != NULL ) {
+    SGMaterial *mat = matlib->find( "Ocean" );
+    if ( mat != NULL ) {
         // set the texture width and height values for this
         // material
-        tex_width = newmat->get_xsize();
+        tex_width = mat->get_xsize();
         // tex_height = newmat->get_ysize();
         
         // set ssgState
-        state = newmat->get_state();
+        state = mat->get_state();
     } else {
         SG_LOG( SG_TERRAIN, SG_ALERT, 
                 "Ack! unknown usemtl name = " << "Ocean" 
@@ -216,373 +176,6 @@ bool fgGenTile( const string& path, SGBucket b,
 }
 
 
-static void random_pt_inside_tri( float *res,
-                                  float *n1, float *n2, float *n3 )
-{
-    double a = sg_random();
-    double b = sg_random();
-    if ( a + b > 1.0 ) {
-        a = 1.0 - a;
-        b = 1.0 - b;
-    }
-    double c = 1 - a - b;
-
-    res[0] = n1[0]*a + n2[0]*b + n3[0]*c;
-    res[1] = n1[1]*a + n2[1]*b + n3[1]*c;
-    res[2] = n1[2]*a + n2[2]*b + n3[2]*c;
-}
-
-
-static void gen_random_surface_points( ssgLeaf *leaf, ssgVertexArray *lights,
-                                       double factor ) {
-    int tris = leaf->getNumTriangles();
-    if ( tris > 0 ) {
-        short int n1, n2, n3;
-        float *p1, *p2, *p3;
-        sgVec3 result;
-
-        // generate a repeatable random seed
-        p1 = leaf->getVertex( 0 );
-        unsigned int seed = (unsigned int)(fabs(p1[0]*100));
-        sg_srandom( seed );
-
-        for ( int i = 0; i < tris; ++i ) {
-            leaf->getTriangle( i, &n1, &n2, &n3 );
-            p1 = leaf->getVertex(n1);
-            p2 = leaf->getVertex(n2);
-            p3 = leaf->getVertex(n3);
-            double area = sgTriArea( p1, p2, p3 );
-            double num = area / factor;
-
-            // generate a light point for each unit of area
-            while ( num > 1.0 ) {
-                random_pt_inside_tri( result, p1, p2, p3 );
-                lights->add( result );
-                num -= 1.0;
-            }
-            // for partial units of area, use a zombie door method to
-            // create the proper random chance of a light being created
-            // for this triangle
-            if ( num > 0.0 ) {
-                if ( sg_random() <= num ) {
-                    // a zombie made it through our door
-                    random_pt_inside_tri( result, p1, p2, p3 );
-                    lights->add( result );
-                }
-            }
-        }
-    }
-}
-
-
-/**
- * User data for populating leaves when they come in range.
- */
-class LeafUserData : public ssgBase
-{
-public:
-    bool is_filled_in;
-    ssgLeaf * leaf;
-    FGNewMat * mat;
-    ssgBranch * branch;
-    float sin_lat;
-    float cos_lat;
-    float sin_lon;
-    float cos_lon;
-
-    void setup_triangle( int i );
-};
-
-
-/**
- * User data for populating triangles when they come in range.
- */
-class TriUserData : public ssgBase
-{
-public:
-  bool is_filled_in;
-  float * p1;
-  float * p2;
-  float * p3;
-    sgVec3 center;
-    double area;
-  FGNewMat::ObjectGroup * object_group;
-  ssgBranch * branch;
-    LeafUserData * leafData;
-  unsigned int seed;
-
-    void fill_in_triangle();
-    void add_object_to_triangle(FGNewMat::Object * object);
-    void makeWorldMatrix (sgMat4 ROT, double hdg_deg );
-};
-
-
-/**
- * Fill in a triangle with randomly-placed objects.
- *
- * This method is invoked by a callback when the triangle is in range
- * but not yet populated.
- *
- */
-
-void TriUserData::fill_in_triangle ()
-{
-                                // generate a repeatable random seed
-    sg_srandom(seed);
-
-    int nObjects = object_group->get_object_count();
-
-    for (int i = 0; i < nObjects; i++) {
-      FGNewMat::Object * object = object_group->get_object(i);
-      double num = area / object->get_coverage_m2();
-
-      // place an object each unit of area
-      while ( num > 1.0 ) {
-          add_object_to_triangle(object);
-          num -= 1.0;
-      }
-      // for partial units of area, use a zombie door method to
-      // create the proper random chance of an object being created
-      // for this triangle
-      if ( num > 0.0 ) {
-        if ( sg_random() <= num ) {
-          // a zombie made it through our door
-                add_object_to_triangle(object);
-        }
-      }
-    }
-}
-
-void TriUserData::add_object_to_triangle (FGNewMat::Object * object)
-{
-    // Set up the random heading if required.
-    double hdg_deg = 0;
-    if (object->get_heading_type() == FGNewMat::Object::HEADING_RANDOM)
-        hdg_deg = sg_random() * 360;
-
-    sgMat4 mat;
-    makeWorldMatrix(mat, hdg_deg);
-
-    ssgTransform * pos = new ssgTransform;
-    pos->setTransform(mat);
-    pos->addKid(object->get_random_model());
-    branch->addKid(pos);
-}
-
-void TriUserData::makeWorldMatrix (sgMat4 mat, double hdg_deg )
-{
-    if (hdg_deg == 0) {
-        mat[0][0] =  leafData->sin_lat * leafData->cos_lon;
-        mat[0][1] =  leafData->sin_lat * leafData->sin_lon;
-        mat[0][2] = -leafData->cos_lat;
-        mat[0][3] =  SG_ZERO;
-
-        mat[1][0] =  -leafData->sin_lon;
-        mat[1][1] =  leafData->cos_lon;
-        mat[1][2] =  SG_ZERO;
-        mat[1][3] =  SG_ZERO;
-    } else {
-        float sin_hdg = sin( hdg_deg * SGD_DEGREES_TO_RADIANS ) ;
-        float cos_hdg = cos( hdg_deg * SGD_DEGREES_TO_RADIANS ) ;
-        mat[0][0] =  cos_hdg * leafData->sin_lat * leafData->cos_lon - sin_hdg * leafData->sin_lon;
-        mat[0][1] =  cos_hdg * leafData->sin_lat * leafData->sin_lon + sin_hdg * leafData->cos_lon;
-        mat[0][2] = -cos_hdg * leafData->cos_lat;
-        mat[0][3] =  SG_ZERO;
-
-        mat[1][0] = -sin_hdg * leafData->sin_lat * leafData->cos_lon - cos_hdg * leafData->sin_lon;
-        mat[1][1] = -sin_hdg * leafData->sin_lat * leafData->sin_lon + cos_hdg * leafData->cos_lon;
-        mat[1][2] =  sin_hdg * leafData->cos_lat;
-        mat[1][3] =  SG_ZERO;
-    }
-
-    mat[2][0] = leafData->cos_lat * leafData->cos_lon;
-    mat[2][1] = leafData->cos_lat * leafData->sin_lon;
-    mat[2][2] = leafData->sin_lat;
-    mat[2][3] = SG_ZERO;
-
-    // translate to random point in triangle
-    sgVec3 result;
-    random_pt_inside_tri(result, p1, p2, p3);
-    sgSubVec3(mat[3], result, center);
-
-    mat[3][3] = SG_ONE ;
-}
-
-/**
- * SSG callback for an in-range triangle of randomly-placed objects.
- *
- * This pretraversal callback is attached to a branch that is traversed
- * only when a triangle is in range.  If the triangle is not currently
- * populated with randomly-placed objects, this callback will populate
- * it.
- *
- * @param entity The entity to which the callback is attached (not used).
- * @param mask The entity's traversal mask (not used).
- * @return Always 1, to allow traversal and culling to continue.
- */
-static int
-tri_in_range_callback (ssgEntity * entity, int mask)
-{
-  TriUserData * data = (TriUserData *)entity->getUserData();
-  if (!data->is_filled_in) {
-        data->fill_in_triangle();
-    data->is_filled_in = true;
-  }
-  return 1;
-}
-
-
-/**
- * SSG callback for an out-of-range triangle of randomly-placed objects.
- *
- * This pretraversal callback is attached to a branch that is traversed
- * only when a triangle is out of range.  If the triangle is currently
- * populated with randomly-placed objects, the objects will be removed.
- *
- *
- * @param entity The entity to which the callback is attached (not used).
- * @param mask The entity's traversal mask (not used).
- * @return Always 0, to prevent any further traversal or culling.
- */
-static int
-tri_out_of_range_callback (ssgEntity * entity, int mask)
-{
-  TriUserData * data = (TriUserData *)entity->getUserData();
-  if (data->is_filled_in) {
-    data->branch->removeAllKids();
-    data->is_filled_in = false;
-  }
-  return 0;
-}
-
-
-/**
- * ssgEntity with a dummy bounding sphere, to fool culling.
- *
- * This forces the in-range and out-of-range branches to be visited
- * when appropriate, even if they have no children.  It's ugly, but
- * it works and seems fairly efficient (since branches can still
- * be culled when they're out of the view frustum).
- */
-class DummyBSphereEntity : public ssgBranch
-{
-public:
-  DummyBSphereEntity (float radius)
-  {
-    bsphere.setCenter(0, 0, 0);
-    bsphere.setRadius(radius);
-  }
-  virtual ~DummyBSphereEntity () {}
-  virtual void recalcBSphere () { bsphere_is_invalid = false; }
-};
-
-
-/**
- * Calculate the bounding radius of a triangle from its center.
- *
- * @param center The triangle center.
- * @param p1 The first point in the triangle.
- * @param p2 The second point in the triangle.
- * @param p3 The third point in the triangle.
- * @return The greatest distance any point lies from the center.
- */
-static inline float
-get_bounding_radius( sgVec3 center, float *p1, float *p2, float *p3)
-{
-   return sqrt( SG_MAX3( sgDistanceSquaredVec3(center, p1),
-                         sgDistanceSquaredVec3(center, p2),
-                         sgDistanceSquaredVec3(center, p3) ) );
-}
-
-
-/**
- * Set up a triangle for randomly-placed objects.
- *
- * No objects will be added unless the triangle comes into range.
- *
- */
-
-void LeafUserData::setup_triangle (int i )
-{
-    short n1, n2, n3;
-    leaf->getTriangle(i, &n1, &n2, &n3);
-
-    float * p1 = leaf->getVertex(n1);
-    float * p2 = leaf->getVertex(n2);
-    float * p3 = leaf->getVertex(n3);
-
-                                // Set up a single center point for LOD
-    sgVec3 center;
-    sgSetVec3(center,
-              (p1[0] + p2[0] + p3[0]) / 3.0,
-              (p1[1] + p2[1] + p3[1]) / 3.0,
-              (p1[2] + p2[2] + p3[2]) / 3.0);
-    double area = sgTriArea(p1, p2, p3);
-      
-                                // maximum radius of an object from center.
-    double bounding_radius = get_bounding_radius(center, p1, p2, p3);
-
-                                // Set up a transformation to the center
-                                // point, so that everything else can
-                                // be specified relative to it.
-    ssgTransform * location = new ssgTransform;
-    sgMat4 TRANS;
-    sgMakeTransMat4(TRANS, center);
-    location->setTransform(TRANS);
-    branch->addKid(location);
-
-                                // Iterate through all the object types.
-    int num_groups = mat->get_object_group_count();
-    for (int j = 0; j < num_groups; j++) {
-                                // Look up the random object.
-        FGNewMat::ObjectGroup * group = mat->get_object_group(j);
-
-                                // Set up the range selector for the entire
-                                // triangle; note that we use the object
-                                // range plus the bounding radius here, to
-                                // allow for objects far from the center.
-        float ranges[] = { 0,
-                          group->get_range_m() + bounding_radius,
-                SG_MAX };
-        ssgRangeSelector * lod = new ssgRangeSelector;
-        lod->setRanges(ranges, 3);
-        location->addKid(lod);
-
-                                // Create the in-range and out-of-range
-                                // branches.
-        ssgBranch * in_range = new ssgBranch;
-        ssgBranch * out_of_range = new ssgBranch;
-
-                                // Set up the user data for if/when
-                                // the random objects in this triangle
-                                // are filled in.
-        TriUserData * data = new TriUserData;
-        data->is_filled_in = false;
-        data->p1 = p1;
-        data->p2 = p2;
-        data->p3 = p3;
-        sgCopyVec3 (data->center, center);
-        data->area = area;
-        data->object_group = group;
-        data->branch = in_range;
-        data->leafData = this;
-        data->seed = (unsigned int)(p1[0] * j);
-
-                                // Set up the in-range node.
-        in_range->setUserData(data);
-        in_range->setTravCallback(SSG_CALLBACK_PRETRAV,
-                                 tri_in_range_callback);
-        lod->addKid(in_range);
-
-                                // Set up the out-of-range node.
-        out_of_range->setUserData(data);
-        out_of_range->setTravCallback(SSG_CALLBACK_PRETRAV,
-                                      tri_out_of_range_callback);
-        out_of_range->addKid(new DummyBSphereEntity(bounding_radius));
-        lod->addKid(out_of_range);
-    }
-}
-
 /**
  * SSG callback for an in-range leaf of randomly-placed objects.
  *
@@ -599,7 +192,7 @@ void LeafUserData::setup_triangle (int i )
 static int
 leaf_in_range_callback (ssgEntity * entity, int mask)
 {
-  LeafUserData * data = (LeafUserData *)entity->getUserData();
+  sgLeafUserData * data = (sgLeafUserData *)entity->getUserData();
 
   if (!data->is_filled_in) {
                                 // Iterate through all the triangles
@@ -629,7 +222,7 @@ leaf_in_range_callback (ssgEntity * entity, int mask)
 static int
 leaf_out_of_range_callback (ssgEntity * entity, int mask)
 {
-  LeafUserData * data = (LeafUserData *)entity->getUserData();
+  sgLeafUserData * data = (sgLeafUserData *)entity->getUserData();
   if (data->is_filled_in) {
     data->branch->removeAllKids();
     data->is_filled_in = false;
@@ -656,26 +249,19 @@ leaf_out_of_range_callback (ssgEntity * entity, int mask)
 static void
 gen_random_surface_objects (ssgLeaf *leaf,
                             ssgBranch *branch,
-                            Point3D * center,
-                            const string &material_name)
+                            Point3D *center,
+                            SGMaterial *mat )
 {
                                 // If the surface has no triangles, return
                                 // now.
     int num_tris = leaf->getNumTriangles();
     if (num_tris < 1)
-      return;
-
-                                // Get the material for this surface.
-    FGNewMat * mat = material_lib.find(material_name);
-    if (mat == 0) {
-      SG_LOG(SG_INPUT, SG_ALERT, "Unknown material " << material_name);
-      return;
-    }
+        return;
 
                                 // If the material has no randomly-placed
                                 // objects, return now.
     if (mat->get_object_group_count() < 1)
-      return;
+        return;
 
                                 // Calculate the geodetic centre of
                                 // the tile, for aligning automatic
@@ -701,7 +287,7 @@ gen_random_surface_objects (ssgLeaf *leaf,
     lod->addKid(in_range);
     lod->addKid(out_of_range);
 
-    LeafUserData * data = new LeafUserData;
+    sgLeafUserData * data = new sgLeafUserData;
     data->is_filled_in = false;
     data->leaf = leaf;
     data->mat = mat;
@@ -717,7 +303,7 @@ gen_random_surface_objects (ssgLeaf *leaf,
     out_of_range->setTravCallback(SSG_CALLBACK_PRETRAV,
                                    leaf_out_of_range_callback);
     out_of_range
-      ->addKid(new DummyBSphereEntity(leaf->getBSphere()->getRadius()));
+      ->addKid(new sgDummyBSphereEntity(leaf->getBSphere()->getRadius()));
 }
 
 
@@ -726,163 +312,18 @@ gen_random_surface_objects (ssgLeaf *leaf,
 // Scenery loaders.
 ////////////////////////////////////////////////////////////////////////
 
-ssgLeaf *gen_leaf( const string& path,
-                   const GLenum ty, const string& material,
-                   const point_list& nodes, const point_list& normals,
-                   const point_list& texcoords,
-                   const int_list& node_index,
-                   const int_list& normal_index,
-                   const int_list& tex_index,
-                   const bool calc_lights, ssgVertexArray *lights )
-{
-    double tex_width = 1000.0, tex_height = 1000.0;
-    ssgSimpleState *state = NULL;
-    float coverage = -1;
-
-    FGNewMat *newmat = material_lib.find( material );
-    if ( newmat == NULL ) {
-        // see if this is an on the fly texture
-        string file = path;
-        string::size_type pos = file.rfind( "/" );
-        file = file.substr( 0, pos );
-        // cout << "current file = " << file << endl;
-        file += "/";
-        file += material;
-        // cout << "current file = " << file << endl;
-        if ( ! material_lib.add_item( file ) ) {
-            SG_LOG( SG_TERRAIN, SG_ALERT, 
-                    "Ack! unknown usemtl name = " << material 
-                    << " in " << path );
-        } else {
-            // locate our newly created material
-            newmat = material_lib.find( material );
-            if ( newmat == NULL ) {
-                SG_LOG( SG_TERRAIN, SG_ALERT, 
-                        "Ack! bad on the fly material create = "
-                        << material << " in " << path );
-            }
-        }
-    }
-
-    if ( newmat != NULL ) {
-        // set the texture width and height values for this
-        // material
-        tex_width = newmat->get_xsize();
-        tex_height = newmat->get_ysize();
-        state = newmat->get_state();
-        coverage = newmat->get_light_coverage();
-        // cout << "(w) = " << tex_width << " (h) = "
-        //      << tex_width << endl;
-    } else {
-        coverage = -1;
-    }
-
-    sgVec2 tmp2;
-    sgVec3 tmp3;
-    sgVec4 tmp4;
-    int i;
-
-    // vertices
-    int size = node_index.size();
-    if ( size < 1 ) {
-        SG_LOG( SG_TERRAIN, SG_ALERT, "Woh! node list size < 1" );
-        exit(-1);
-    }
-    ssgVertexArray *vl = new ssgVertexArray( size );
-    Point3D node;
-    for ( i = 0; i < size; ++i ) {
-        node = nodes[ node_index[i] ];
-        sgSetVec3( tmp3, node[0], node[1], node[2] );
-        vl -> add( tmp3 );
-    }
-
-    // normals
-    Point3D normal;
-    ssgNormalArray *nl = new ssgNormalArray( size );
-    if ( normal_index.size() ) {
-        // object file specifies normal indices (i.e. normal indices
-        // aren't 'implied'
-        for ( i = 0; i < size; ++i ) {
-            normal = normals[ normal_index[i] ];
-            sgSetVec3( tmp3, normal[0], normal[1], normal[2] );
-            nl -> add( tmp3 );
-        }
-    } else {
-        // use implied normal indices.  normal index = vertex index.
-        for ( i = 0; i < size; ++i ) {
-            normal = normals[ node_index[i] ];
-            sgSetVec3( tmp3, normal[0], normal[1], normal[2] );
-            nl -> add( tmp3 );
-        }
-    }
-
-    // colors
-    ssgColourArray *cl = new ssgColourArray( 1 );
-    sgSetVec4( tmp4, 1.0, 1.0, 1.0, 1.0 );
-    cl->add( tmp4 );
-
-    // texture coordinates
-    size = tex_index.size();
-    Point3D texcoord;
-    ssgTexCoordArray *tl = new ssgTexCoordArray( size );
-    if ( size == 1 ) {
-        texcoord = texcoords[ tex_index[0] ];
-        sgSetVec2( tmp2, texcoord[0], texcoord[1] );
-        sgSetVec2( tmp2, texcoord[0], texcoord[1] );
-        if ( tex_width > 0 ) {
-            tmp2[0] *= (1000.0 / tex_width);
-        }
-        if ( tex_height > 0 ) {
-            tmp2[1] *= (1000.0 / tex_height);
-        }
-        tl -> add( tmp2 );
-    } else if ( size > 1 ) {
-        for ( i = 0; i < size; ++i ) {
-            texcoord = texcoords[ tex_index[i] ];
-            sgSetVec2( tmp2, texcoord[0], texcoord[1] );
-            if ( tex_width > 0 ) {
-                tmp2[0] *= (1000.0 / tex_width);
-            }
-            if ( tex_height > 0 ) {
-                tmp2[1] *= (1000.0 / tex_height);
-            }
-            tl -> add( tmp2 );
-        }
-    }
-
-    ssgLeaf *leaf = new ssgVtxTable ( ty, vl, nl, tl, cl );
-
-    // lookup the state record
-
-    leaf->setState( state );
-
-    if ( calc_lights ) {
-        if ( coverage > 0.0 ) {
-            if ( coverage < 10000.0 ) {
-                SG_LOG(SG_INPUT, SG_ALERT, "Light coverage is "
-                       << coverage << ", pushing up to 10000");
-                coverage = 10000;
-            }
-            gen_random_surface_points(leaf, lights, coverage);
-        }
-    }
-
-    return leaf;
-}
-
-
 // Load an Binary obj file
 bool fgBinObjLoad( const string& path, const bool is_base,
                    Point3D *center,
                    double *bounding_radius,
+                   SGMaterialLib *matlib,
+                   bool use_random_objects,
                    ssgBranch* geometry,
                    ssgBranch* rwy_lights,
                    ssgBranch* taxi_lights,
                    ssgVertexArray *ground_lights )
 {
     SGBinObject obj;
-    bool use_random_objects =
-      fgGetBool("/sim/rendering/random-objects", true);
 
     if ( ! obj.read_bin( path ) ) {
         return false;
@@ -914,14 +355,10 @@ bool fgBinObjLoad( const string& path, const bool is_base,
             sgVec3 up;
             sgSetVec3( up, center->x(), center->y(), center->z() );
             // returns a transform -> lod -> leaf structure
-            ssgBranch *branch = gen_directional_lights( nodes, normals,
-                                                        pts_v[i], pts_n[i],
-                                                        pt_materials[i],
-                                                        up );
-            // branches don't honor callbacks as far as I know so I'm
-            // commenting this out to avoid a plib runtime warning.
-            branch->setTravCallback( SSG_CALLBACK_PRETRAV,
-                                     runway_lights_pretrav );
+            ssgBranch *branch = sgMakeDirectionalLights( nodes, normals,
+                                                         pts_v[i], pts_n[i],
+                                                         matlib,
+                                                         pt_materials[i], up );
             if ( pt_materials[i].substr(0, 16) == "RWY_BLUE_TAXIWAY" ) {
                 taxi_lights->addKid( branch );
             } else {
@@ -930,10 +367,10 @@ bool fgBinObjLoad( const string& path, const bool is_base,
         } else {
             material = pt_materials[i];
             tex_index.clear();
-            ssgLeaf *leaf = gen_leaf( path, GL_POINTS, material,
-                                      nodes, normals, texcoords,
-                                      pts_v[i], pts_n[i], tex_index,
-                                      false, ground_lights );
+            ssgLeaf *leaf = sgMakeLeaf( path, GL_POINTS, matlib, material,
+                                        nodes, normals, texcoords,
+                                        pts_v[i], pts_n[i], tex_index,
+                                        false, ground_lights );
             geometry->addKid( leaf );
         }
     }
@@ -957,14 +394,23 @@ bool fgBinObjLoad( const string& path, const bool is_base,
     group_list const& tris_n = obj.get_tris_n();
     group_list const& tris_tc = obj.get_tris_tc();
     for ( i = 0; i < tris_v.size(); ++i ) {
-        ssgLeaf *leaf = gen_leaf( path, GL_TRIANGLES, tri_materials[i],
-                                  nodes, normals, texcoords,
-                                  tris_v[i], tris_n[i], tris_tc[i],
-                                  is_base, ground_lights );
-
-        if (use_random_objects)
-          gen_random_surface_objects(leaf, random_object_branch,
-                                     center, tri_materials[i]);
+        ssgLeaf *leaf = sgMakeLeaf( path, GL_TRIANGLES, matlib,
+                                    tri_materials[i],
+                                    nodes, normals, texcoords,
+                                    tris_v[i], tris_n[i], tris_tc[i],
+                                    is_base, ground_lights );
+
+        if ( use_random_objects ) {
+            SGMaterial *mat = matlib->find( tri_materials[i] );
+            if ( mat == NULL ) {
+                SG_LOG( SG_INPUT, SG_ALERT,
+                        "Unknown material for random surface objects = "
+                        << tri_materials[i] );
+            } else {
+                gen_random_surface_objects( leaf, random_object_branch,
+                                            center, mat );
+            }
+        }
         geometry->addKid( leaf );
     }
 
@@ -974,14 +420,23 @@ bool fgBinObjLoad( const string& path, const bool is_base,
     group_list const& strips_n = obj.get_strips_n();
     group_list const& strips_tc = obj.get_strips_tc();
     for ( i = 0; i < strips_v.size(); ++i ) {
-        ssgLeaf *leaf = gen_leaf( path, GL_TRIANGLE_STRIP, strip_materials[i],
-                                  nodes, normals, texcoords,
-                                  strips_v[i], strips_n[i], strips_tc[i],
-                                  is_base, ground_lights );
-
-        if (use_random_objects)
-          gen_random_surface_objects(leaf, random_object_branch,
-                                     center,strip_materials[i]);
+        ssgLeaf *leaf = sgMakeLeaf( path, GL_TRIANGLE_STRIP,
+                                    matlib, strip_materials[i],
+                                    nodes, normals, texcoords,
+                                    strips_v[i], strips_n[i], strips_tc[i],
+                                    is_base, ground_lights );
+
+        if ( use_random_objects ) {
+            SGMaterial *mat = matlib->find( strip_materials[i] );
+            if ( mat == NULL ) {
+                SG_LOG( SG_INPUT, SG_ALERT,
+                        "Unknown material for random surface objects = "
+                        << strip_materials[i] );
+            } else {
+                gen_random_surface_objects( leaf, random_object_branch,
+                                            center, mat );
+            }
+        }
         geometry->addKid( leaf );
     }
 
@@ -991,13 +446,23 @@ bool fgBinObjLoad( const string& path, const bool is_base,
     group_list const& fans_n = obj.get_fans_n();
     group_list const& fans_tc = obj.get_fans_tc();
     for ( i = 0; i < fans_v.size(); ++i ) {
-        ssgLeaf *leaf = gen_leaf( path, GL_TRIANGLE_FAN, fan_materials[i],
-                                  nodes, normals, texcoords,
-                                  fans_v[i], fans_n[i], fans_tc[i],
-                                  is_base, ground_lights );
-        if (use_random_objects)
-          gen_random_surface_objects(leaf, random_object_branch,
-                                     center, fan_materials[i]);
+        ssgLeaf *leaf = sgMakeLeaf( path, GL_TRIANGLE_FAN,
+                                    matlib, fan_materials[i],
+                                    nodes, normals, texcoords,
+                                    fans_v[i], fans_n[i], fans_tc[i],
+                                    is_base, ground_lights );
+        if ( use_random_objects ) {
+            SGMaterial *mat = matlib->find( fan_materials[i] );
+            if ( mat == NULL ) {
+                SG_LOG( SG_INPUT, SG_ALERT,
+                        "Unknown material for random surface objects = "
+                        << fan_materials[i] );
+            } else {
+                gen_random_surface_objects( leaf, random_object_branch,
+                                            center, mat );
+            }
+        }
+
         geometry->addKid( leaf );
     }