From: curt Date: Wed, 28 May 2003 21:01:55 +0000 (+0000) Subject: Move low level "tg" object loader code over to SimGear. X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=b749638fd6685a49051e59d13b3d1671a9c4cbf9;p=flightgear.git Move low level "tg" object loader code over to SimGear. --- diff --git a/src/Objects/Makefile.am b/src/Objects/Makefile.am index 26c8be127..ceb669c37 100644 --- a/src/Objects/Makefile.am +++ b/src/Objects/Makefile.am @@ -1,7 +1,6 @@ noinst_LIBRARIES = libObjects.a libObjects_a_SOURCES = \ - obj.cxx obj.hxx \ ssgEntityArray.hxx ssgEntityArray.cxx INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/src diff --git a/src/Objects/obj.cxx b/src/Objects/obj.cxx deleted file mode 100644 index 385398b77..000000000 --- a/src/Objects/obj.cxx +++ /dev/null @@ -1,470 +0,0 @@ -// obj.cxx -- routines to handle loading scenery and building the plib -// scene graph. -// -// Written by Curtis Olson, started October 1997. -// -// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com -// -// This program is free software; you can redistribute it and/or -// modify it under the terms of the GNU General Public License as -// published by the Free Software Foundation; either version 2 of the -// License, or (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, but -// WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -// General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software -// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -// -// $Id$ - - -// #ifdef HAVE_CONFIG_H -// # include -// #endif - -#include - -#include STL_STRING - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "obj.hxx" - -SG_USING_STD(string); - - -// Generate an ocean tile -bool fgGenTile( const string& path, SGBucket b, - Point3D *center, double *bounding_radius, - SGMaterialLib *matlib, ssgBranch* geometry ) -{ - ssgSimpleState *state = NULL; - - geometry->setName( (char *)path.c_str() ); - - double tex_width = 1000.0; - // double tex_height; - - // find Ocean material in the properties list - SGMaterial *mat = matlib->find( "Ocean" ); - if ( mat != NULL ) { - // set the texture width and height values for this - // material - tex_width = mat->get_xsize(); - // tex_height = newmat->get_ysize(); - - // set ssgState - state = mat->get_state(); - } else { - SG_LOG( SG_TERRAIN, SG_ALERT, - "Ack! unknown usemtl name = " << "Ocean" - << " in " << path ); - } - - // Calculate center point - double clon = b.get_center_lon(); - double clat = b.get_center_lat(); - double height = b.get_height(); - double width = b.get_width(); - - *center = sgGeodToCart( Point3D(clon*SGD_DEGREES_TO_RADIANS, - clat*SGD_DEGREES_TO_RADIANS, - 0.0) ); - // cout << "center = " << center << endl;; - - // Caculate corner vertices - Point3D geod[4]; - geod[0] = Point3D( clon - width/2.0, clat - height/2.0, 0.0 ); - geod[1] = Point3D( clon + width/2.0, clat - height/2.0, 0.0 ); - geod[2] = Point3D( clon + width/2.0, clat + height/2.0, 0.0 ); - geod[3] = Point3D( clon - width/2.0, clat + height/2.0, 0.0 ); - - Point3D rad[4]; - int i; - for ( i = 0; i < 4; ++i ) { - rad[i] = Point3D( geod[i].x() * SGD_DEGREES_TO_RADIANS, - geod[i].y() * SGD_DEGREES_TO_RADIANS, - geod[i].z() ); - } - - Point3D cart[4], rel[4]; - for ( i = 0; i < 4; ++i ) { - cart[i] = sgGeodToCart(rad[i]); - rel[i] = cart[i] - *center; - // cout << "corner " << i << " = " << cart[i] << endl; - } - - // Calculate bounding radius - *bounding_radius = center->distance3D( cart[0] ); - // cout << "bounding radius = " << t->bounding_radius << endl; - - // Calculate normals - Point3D normals[4]; - for ( i = 0; i < 4; ++i ) { - double length = cart[i].distance3D( Point3D(0.0) ); - normals[i] = cart[i] / length; - // cout << "normal = " << normals[i] << endl; - } - - // Calculate texture coordinates - point_list geod_nodes; - geod_nodes.clear(); - geod_nodes.reserve(4); - int_list rectangle; - rectangle.clear(); - rectangle.reserve(4); - for ( i = 0; i < 4; ++i ) { - geod_nodes.push_back( geod[i] ); - rectangle.push_back( i ); - } - point_list texs = calc_tex_coords( b, geod_nodes, rectangle, - 1000.0 / tex_width ); - - // Allocate ssg structure - ssgVertexArray *vl = new ssgVertexArray( 4 ); - ssgNormalArray *nl = new ssgNormalArray( 4 ); - ssgTexCoordArray *tl = new ssgTexCoordArray( 4 ); - ssgColourArray *cl = new ssgColourArray( 1 ); - - sgVec4 color; - sgSetVec4( color, 1.0, 1.0, 1.0, 1.0 ); - cl->add( color ); - - // sgVec3 *vtlist = new sgVec3 [ 4 ]; - // t->vec3_ptrs.push_back( vtlist ); - // sgVec3 *vnlist = new sgVec3 [ 4 ]; - // t->vec3_ptrs.push_back( vnlist ); - // sgVec2 *tclist = new sgVec2 [ 4 ]; - // t->vec2_ptrs.push_back( tclist ); - - sgVec2 tmp2; - sgVec3 tmp3; - for ( i = 0; i < 4; ++i ) { - sgSetVec3( tmp3, - rel[i].x(), rel[i].y(), rel[i].z() ); - vl->add( tmp3 ); - - sgSetVec3( tmp3, - normals[i].x(), normals[i].y(), normals[i].z() ); - nl->add( tmp3 ); - - sgSetVec2( tmp2, texs[i].x(), texs[i].y()); - tl->add( tmp2 ); - } - - ssgLeaf *leaf = - new ssgVtxTable ( GL_TRIANGLE_FAN, vl, nl, tl, cl ); - - leaf->setState( state ); - - geometry->addKid( leaf ); - - return true; -} - - -/** - * 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 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). - * - * @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 -leaf_in_range_callback (ssgEntity * entity, int mask) -{ - sgLeafUserData * data = (sgLeafUserData *)entity->getUserData(); - - if (!data->is_filled_in) { - // Iterate through all the triangles - // and populate them. - int num_tris = data->leaf->getNumTriangles(); - for ( int i = 0; i < num_tris; ++i ) { - data->setup_triangle(i); - } - data->is_filled_in = true; - } - return 1; -} - - -/** - * 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 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. - * - * @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 -leaf_out_of_range_callback (ssgEntity * entity, int mask) -{ - sgLeafUserData * data = (sgLeafUserData *)entity->getUserData(); - if (data->is_filled_in) { - data->branch->removeAllKids(); - data->is_filled_in = false; - } - return 0; -} - - -/** - * Randomly place objects on a surface. - * - * The leaf node provides the geometry of the surface, while the - * material provides the objects and placement density. Latitude - * and longitude are required so that the objects can be rotated - * to the world-up vector. This function does not actually add - * any objects; instead, it attaches an ssgRangeSelector to the - * branch with callbacks to generate the objects when needed. - * - * @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 leaf in FlightGear coordinates. - * @param material_name The name of the surface's material. - */ -static void -gen_random_surface_objects (ssgLeaf *leaf, - ssgBranch *branch, - Point3D *center, - SGMaterial *mat ) -{ - // If the surface has no triangles, return - // now. - int num_tris = leaf->getNumTriangles(); - if (num_tris < 1) - return; - - // If the material has no randomly-placed - // objects, return now. - if (mat->get_object_group_count() < 1) - return; - - // Calculate the geodetic centre of - // the tile, for aligning automatic - // objects. - double lon_deg, lat_rad, lat_deg, alt_m, sl_radius_m; - Point3D geoc = sgCartToPolar3d(*center); - lon_deg = geoc.lon() * SGD_RADIANS_TO_DEGREES; - sgGeocToGeod(geoc.lat(), geoc.radius(), - &lat_rad, &alt_m, &sl_radius_m); - lat_deg = lat_rad * SGD_RADIANS_TO_DEGREES; - - // LOD for the leaf - // max random object range: 20000m - float ranges[] = { 0, 20000, 1000000 }; - ssgRangeSelector * lod = new ssgRangeSelector; - lod->setRanges(ranges, 3); - branch->addKid(lod); - - // Create the in-range and out-of-range - // branches. - ssgBranch * in_range = new ssgBranch; - ssgBranch * out_of_range = new ssgBranch; - lod->addKid(in_range); - lod->addKid(out_of_range); - - sgLeafUserData * data = new sgLeafUserData; - data->is_filled_in = false; - data->leaf = leaf; - data->mat = mat; - data->branch = in_range; - data->sin_lat = sin(lat_deg * SGD_DEGREES_TO_RADIANS); - data->cos_lat = cos(lat_deg * SGD_DEGREES_TO_RADIANS); - data->sin_lon = sin(lon_deg * SGD_DEGREES_TO_RADIANS); - data->cos_lon = cos(lon_deg * SGD_DEGREES_TO_RADIANS); - - in_range->setUserData(data); - in_range->setTravCallback(SSG_CALLBACK_PRETRAV, leaf_in_range_callback); - out_of_range->setUserData(data); - out_of_range->setTravCallback(SSG_CALLBACK_PRETRAV, - leaf_out_of_range_callback); - out_of_range - ->addKid(new sgDummyBSphereEntity(leaf->getBSphere()->getRadius())); -} - - - -//////////////////////////////////////////////////////////////////////// -// Scenery loaders. -//////////////////////////////////////////////////////////////////////// - -// 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; - - if ( ! obj.read_bin( path ) ) { - return false; - } - - geometry->setName( (char *)path.c_str() ); - - // reference point (center offset/bounding sphere) - *center = obj.get_gbs_center(); - *bounding_radius = obj.get_gbs_radius(); - - point_list const& nodes = obj.get_wgs84_nodes(); - // point_list const& colors = obj.get_colors(); - point_list const& normals = obj.get_normals(); - point_list const& texcoords = obj.get_texcoords(); - - string material; - int_list tex_index; - - group_list::size_type i; - - // generate points - string_list const& pt_materials = obj.get_pt_materials(); - group_list const& pts_v = obj.get_pts_v(); - group_list const& pts_n = obj.get_pts_n(); - for ( i = 0; i < pts_v.size(); ++i ) { - // cout << "pts_v.size() = " << pts_v.size() << endl; - if ( pt_materials[i].substr(0, 3) == "RWY" ) { - sgVec3 up; - sgSetVec3( up, center->x(), center->y(), center->z() ); - // returns a transform -> lod -> leaf structure - 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 { - rwy_lights->addKid( branch ); - } - } else { - material = pt_materials[i]; - tex_index.clear(); - 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 ); - } - } - - // Put all randomly-placed objects under a separate branch - // (actually an ssgRangeSelector) named "random-models". - ssgBranch * random_object_branch = 0; - if (use_random_objects) { - float ranges[] = { 0, 20000 }; // Maximum 20km range for random objects - ssgRangeSelector * object_lod = new ssgRangeSelector; - object_lod->setRanges(ranges, 2); - object_lod->setName("random-models"); - geometry->addKid(object_lod); - random_object_branch = new ssgBranch; - object_lod->addKid(random_object_branch); - } - - // generate triangles - string_list const& tri_materials = obj.get_tri_materials(); - group_list const& tris_v = obj.get_tris_v(); - 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 = 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 ); - } - - // generate strips - string_list const& strip_materials = obj.get_strip_materials(); - group_list const& strips_v = obj.get_strips_v(); - 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 = 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 ); - } - - // generate fans - string_list const& fan_materials = obj.get_fan_materials(); - group_list const& fans_v = obj.get_fans_v(); - 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 = 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 ); - } - - return true; -} diff --git a/src/Objects/obj.hxx b/src/Objects/obj.hxx deleted file mode 100644 index cfd99232d..000000000 --- a/src/Objects/obj.hxx +++ /dev/null @@ -1,65 +0,0 @@ -// obj.hxx -- routines to handle loading scenery and building the plib -// scene graph. -// -// Written by Curtis Olson, started October 1997. -// -// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com -// -// This program is free software; you can redistribute it and/or -// modify it under the terms of the GNU General Public License as -// published by the Free Software Foundation; either version 2 of the -// License, or (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, but -// WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -// General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software -// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -// -// $Id$ - - -#ifndef _OBJ_HXX -#define _OBJ_HXX - - -#ifndef __cplusplus -# error This library requires C++ -#endif - - -#include - -#include STL_STRING - -#include // plib include - -#include - -SG_USING_STD(string); - -class SGBucket; -class SGMaterialLib; - - -// Load a 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 ); - -// Generate an ocean tile -bool fgGenTile( const string& path, SGBucket b, - Point3D *center, double *bounding_radius, - SGMaterialLib *matlib, ssgBranch* geometry ); - - -#endif // _OBJ_HXX diff --git a/src/Scenery/tileentry.cxx b/src/Scenery/tileentry.cxx index 55b4a9db7..4f9e406a4 100644 --- a/src/Scenery/tileentry.cxx +++ b/src/Scenery/tileentry.cxx @@ -37,6 +37,7 @@ #include #include #include +#include #include #include @@ -45,7 +46,6 @@ #include
#include #include