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Some renaming, since there wasn't really a tile-level LOD.

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david 2002-07-26 22:12:29 +00:00
parent 8244b210fa
commit f05e8f95e2
1 changed files with 15 additions and 17 deletions
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32
src/Objects/obj.cxx
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@ -546,8 +546,6 @@ public:
virtual void isect (sgSphere *s, sgMat4 m, int test_needed) {}
virtual void hot (sgVec3 s, sgMat4 m, int test_needed) {}
virtual void los (sgVec3 s, sgMat4 m, int test_needed) {}
static ssgEntity * get_tri_entity ();
static ssgEntity * get_tile_entity ();
};
@ -659,9 +657,9 @@ setup_triangle (float * p1, float * p2, float * p3,
/**
* User data for populating tiles when they come in range.
* User data for populating leaves when they come in range.
*/
class TileUserData : public ssgBase
class LeafUserData : public ssgBase
{
public:
bool is_filled_in;
@ -674,10 +672,10 @@ public:
/**
* SSG callback for an in-range tile of randomly-placed objects.
* SSG callback for an in-range leaf of randomly-placed objects.
*
* This pretraversal callback is attached to a branch that is
* traversed only when a tile is in range. If the tile is not
* traversed only when a leaf is in range. If the leaf is not
* currently prepared to be populated with randomly-placed objects,
* this callback will prepare it (actual population is handled by
* the tri_in_range_callback for individual triangles).
@ -687,9 +685,9 @@ public:
* @return Always 1, to allow traversal and culling to continue.
*/
static int
tile_in_range_callback (ssgEntity * entity, int mask)
leaf_in_range_callback (ssgEntity * entity, int mask)
{
TileUserData * data = (TileUserData *)entity->getUserData();
LeafUserData * data = (LeafUserData *)entity->getUserData();
if (!data->is_filled_in) {
// Iterate through all the triangles
@ -710,10 +708,10 @@ tile_in_range_callback (ssgEntity * entity, int mask)
/**
* SSG callback for an out-of-range tile of randomly-placed objects.
* SSG callback for an out-of-range leaf of randomly-placed objects.
*
* This pretraversal callback is attached to a branch that is
* traversed only when a tile is out of range. If the tile is
* traversed only when a leaf is out of range. If the leaf is
* currently prepared to be populated with randomly-placed objects (or
* is actually populated), the objects will be removed.
*
@ -722,9 +720,9 @@ tile_in_range_callback (ssgEntity * entity, int mask)
* @return Always 0, to prevent any further traversal or culling.
*/
static int
tile_out_of_range_callback (ssgEntity * entity, int mask)
leaf_out_of_range_callback (ssgEntity * entity, int mask)
{
TileUserData * data = (TileUserData *)entity->getUserData();
LeafUserData * data = (LeafUserData *)entity->getUserData();
if (data->is_filled_in) {
data->branch->removeAllKids();
data->is_filled_in = false;
@ -745,7 +743,7 @@ tile_out_of_range_callback (ssgEntity * entity, int mask)
*
* @param leaf The surface where the objects should be placed.
* @param branch The branch that will hold the randomly-placed objects.
* @param center The center of the tile in FlightGear coordinates.
* @param center The center of the leaf in FlightGear coordinates.
* @param lon_deg The longitude of the surface center, in degrees.
* @param lat_deg The latitude of the surface center, in degrees.
* @param material_name The name of the surface's material.
@ -784,7 +782,7 @@ gen_random_surface_objects (ssgLeaf *leaf,
&lat_rad, &alt_m, &sl_radius_m);
lat_deg = lat_rad * SGD_RADIANS_TO_DEGREES;
// LOD for the tile
// LOD for the leaf
// max random object range: 20000m
float ranges[] = {0, 20000, 1000000};
ssgRangeSelector * lod = new ssgRangeSelector;
@ -798,7 +796,7 @@ gen_random_surface_objects (ssgLeaf *leaf,
lod->addKid(in_range);
lod->addKid(out_of_range);
TileUserData * data = new TileUserData;
LeafUserData * data = new LeafUserData;
data->is_filled_in = false;
data->leaf = leaf;
data->mat = mat;
@ -807,10 +805,10 @@ gen_random_surface_objects (ssgLeaf *leaf,
data->lat_deg = lat_deg;
in_range->setUserData(data);
in_range->setTravCallback(SSG_CALLBACK_PRETRAV, tile_in_range_callback);
in_range->setTravCallback(SSG_CALLBACK_PRETRAV, leaf_in_range_callback);
out_of_range->setUserData(data);
out_of_range->setTravCallback(SSG_CALLBACK_PRETRAV,
tile_out_of_range_callback);
leaf_out_of_range_callback);
out_of_range
->addKid(new DummyBSphereEntity(leaf->getBSphere()->getRadius()));
}