src/Model/model_panel.cxx

   1 // model.cxx - manage a 3D aircraft model.
   2 // Written by David Megginson, started 2002.
   3 //
   4 // This file is in the Public Domain, and comes with no warranty.
   5
   6 #ifdef HAVE_CONFIG_H
   7 #  include <config.h>
   8 #endif
   9
  10 #include <simgear/compiler.h>
  11
  12 #include <string.h>             // for strcmp()
  13
  14 #include <vector>
  15
  16 #include <plib/sg.h>
  17 #include <plib/ssg.h>
  18 #include <plib/ul.h>
  19
  20 #include <simgear/misc/exception.hxx>
  21 #include <simgear/misc/sg_path.hxx>
  22 #include <simgear/props/props.hxx>
  23 #include <simgear/props/props_io.hxx>
  24 #include <simgear/scene/model/animation.hxx>
  25 #include <simgear/scene/model/model.hxx>
  26
  27 #include "panelnode.hxx"
  28
  29 #include "model_panel.hxx"
  30
  31 SG_USING_STD(vector);
  32
  33
  34 \f
  35 ////////////////////////////////////////////////////////////////////////
  36 // Global functions.
  37 ////////////////////////////////////////////////////////////////////////
  38
  39 // FIXME: should attempt to share more of the code with
  40 // fgLoad3DModel() since these routines are almost identical with the
  41 // exception of the panel node section.
  42
  43 ssgBranch *
  44 fgLoad3DModelPanel( const string &fg_root, const string &path,
  45                     SGPropertyNode *prop_root,
  46                     double sim_time_sec )
  47 {
  48   ssgBranch * model = 0;
  49   SGPropertyNode props;
  50
  51                                 // Load the 3D aircraft object itself
  52   SGPath xmlpath;
  53   SGPath modelpath = path;
  54   if ( ulIsAbsolutePathName( path.c_str() ) ) {
  55     xmlpath = modelpath;
  56   }
  57   else {
  58     xmlpath = fg_root;
  59     xmlpath.append(modelpath.str());
  60   }
  61
  62                                 // Check for an XML wrapper
  63   if (xmlpath.str().substr(xmlpath.str().size() - 4, 4) == ".xml") {
  64     readProperties(xmlpath.str(), &props);
  65     if (props.hasValue("/path")) {
  66       modelpath = modelpath.dir();
  67       modelpath.append(props.getStringValue("/path"));
  68     } else {
  69       if (model == 0)
  70         model = new ssgBranch;
  71     }
  72   }
  73
  74                                 // Assume that textures are in
  75                                 // the same location as the XML file.
  76   if (model == 0) {
  77     ssgTexturePath((char *)xmlpath.dir().c_str());
  78     model = (ssgBranch *)ssgLoad((char *)modelpath.c_str());
  79     if (model == 0)
  80       throw sg_exception("Failed to load 3D model");
  81   }
  82
  83                                 // Set up the alignment node
  84   ssgTransform * alignmainmodel = new ssgTransform;
  85   alignmainmodel->addKid(model);
  86   sgMat4 res_matrix;
  87   fgMakeOffsetsMatrix(&res_matrix,
  88                       props.getFloatValue("/offsets/heading-deg", 0.0),
  89                       props.getFloatValue("/offsets/roll-deg", 0.0),
  90                       props.getFloatValue("/offsets/pitch-deg", 0.0),
  91                       props.getFloatValue("/offsets/x-m", 0.0),
  92                       props.getFloatValue("/offsets/y-m", 0.0),
  93                       props.getFloatValue("/offsets/z-m", 0.0));
  94   alignmainmodel->setTransform(res_matrix);
  95
  96   unsigned int i;
  97
  98                                 // Load panels
  99   vector<SGPropertyNode_ptr> panel_nodes = props.getChildren("panel");
 100   for (i = 0; i < panel_nodes.size(); i++) {
 101     SG_LOG(SG_INPUT, SG_DEBUG, "Loading a panel");
 102     FGPanelNode * panel = new FGPanelNode(panel_nodes[i]);
 103     if (panel_nodes[i]->hasValue("name"))
 104         panel->setName((char *)panel_nodes[i]->getStringValue("name"));
 105     model->addKid(panel);
 106   }
 107
 108                                 // Load animations
 109   vector<SGPropertyNode_ptr> animation_nodes = props.getChildren("animation");
 110   for (i = 0; i < animation_nodes.size(); i++) {
 111     const char * name = animation_nodes[i]->getStringValue("name", 0);
 112     vector<SGPropertyNode_ptr> name_nodes =
 113       animation_nodes[i]->getChildren("object-name");
 114     fgMakeAnimation( model, name, name_nodes, prop_root, animation_nodes[i],
 115                      sim_time_sec);
 116   }
 117
 118                                 // Load sub-models
 119   vector<SGPropertyNode_ptr> model_nodes = props.getChildren("model");
 120   for (i = 0; i < model_nodes.size(); i++) {
 121     SGPropertyNode_ptr node = model_nodes[i];
 122     ssgTransform * align = new ssgTransform;
 123     sgMat4 res_matrix;
 124     fgMakeOffsetsMatrix(&res_matrix,
 125                         node->getFloatValue("offsets/heading-deg", 0.0),
 126                         node->getFloatValue("offsets/roll-deg", 0.0),
 127                         node->getFloatValue("offsets/pitch-deg", 0.0),
 128                         node->getFloatValue("offsets/x-m", 0.0),
 129                         node->getFloatValue("offsets/y-m", 0.0),
 130                         node->getFloatValue("offsets/z-m", 0.0));
 131     align->setTransform(res_matrix);
 132
 133     ssgBranch * kid = fgLoad3DModel( fg_root, node->getStringValue("path"),
 134                                      prop_root, sim_time_sec );
 135     align->addKid(kid);
 136     model->addKid(align);
 137   }
 138
 139   return alignmainmodel;
 140 }
 141
 142
 143 // end of model_panel.cxx