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Patch from Jim Wilson to realign model slightly in new model code:

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This should fix it.  The problem wasn't the rotations but a difference in
the translations.  Note that this fix also puts the wheels back on top of the
pavement when in external view.
This commit is contained in:
david 2002-04-05 18:48:04 +00:00
parent d2344cbabb
commit 9d6011aa69
1 changed files with 17 additions and 5 deletions
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22
src/Model/model.cxx
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@ -128,19 +128,31 @@ world_coordinate( sgCoord *obj_pos,
double lat_deg, double lon_deg, double elev_ft,
double roll_deg, double pitch_deg, double hdg_deg)
{
// setup translation
double sea_level_radius_m;
double lat_geoc_rad;
// Convert from geodetic to geocentric
// coordinates.
sgGeodToGeoc(lat_deg * SGD_DEGREES_TO_RADIANS,
elev_ft * SG_FEET_TO_METER,
&sea_level_radius_m,
&lat_geoc_rad);
Point3D center = scenery.get_center();
// setup transforms
Point3D geod( lon_deg * SGD_DEGREES_TO_RADIANS,
lat_deg * SGD_DEGREES_TO_RADIANS,
elev_ft * SG_FEET_TO_METER);
Point3D geod = Point3D(lon_deg * SG_DEGREES_TO_RADIANS,
lat_geoc_rad,
sea_level_radius_m);
geod.setz(geod.radius() + elev_ft * SG_FEET_TO_METER);
Point3D world_pos = sgGeodToCart( geod );
Point3D world_pos = sgPolarToCart3d( geod );
Point3D offset = world_pos - center;
sgMat4 POS;
sgMakeTransMat4( POS, offset.x(), offset.y(), offset.z() );
// setup transforms
sgVec3 obj_bk, obj_rt, obj_up;
sgSetVec3( obj_bk, 1.0, 0.0, 0.0); // X axis
sgSetVec3( obj_rt, 0.0, 1.0, 0.0); // Y axis