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/structure/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 modelpath = path;
  53   if ( !ulIsAbsolutePathName( path.c_str() ) ) {
  54     SGPath tmp = fg_root;
  55     tmp.append(modelpath.str());
  56     modelpath = tmp;
  57   }
  58
  59                                 // Check for an XML wrapper
  60   if (modelpath.str().substr(modelpath.str().size() - 4, 4) == ".xml") {
  61     readProperties(modelpath.str(), &props);
  62     if (props.hasValue("/path")) {
  63       modelpath = modelpath.dir();
  64       modelpath.append(props.getStringValue("/path"));
  65     } else {
  66       if (model == 0)
  67         model = new ssgBranch;
  68     }
  69   }
  70
  71                                 // Assume that textures are in
  72                                 // the same location as the XML file.
  73   if (model == 0) {
  74     ssgTexturePath((char *)modelpath.dir().c_str());
  75     model = (ssgBranch *)ssgLoad((char *)modelpath.c_str());
  76     if (model == 0)
  77       throw sg_exception("Failed to load 3D model");
  78   }
  79
  80                                 // Set up the alignment node
  81   ssgTransform * alignmainmodel = new ssgTransform;
  82   alignmainmodel->addKid(model);
  83   sgMat4 res_matrix;
  84   sgMakeOffsetsMatrix(&res_matrix,
  85                       props.getFloatValue("/offsets/heading-deg", 0.0),
  86                       props.getFloatValue("/offsets/roll-deg", 0.0),
  87                       props.getFloatValue("/offsets/pitch-deg", 0.0),
  88                       props.getFloatValue("/offsets/x-m", 0.0),
  89                       props.getFloatValue("/offsets/y-m", 0.0),
  90                       props.getFloatValue("/offsets/z-m", 0.0));
  91   alignmainmodel->setTransform(res_matrix);
  92
  93   unsigned int i;
  94
  95                                 // Load panels
  96   vector<SGPropertyNode_ptr> panel_nodes = props.getChildren("panel");
  97   for (i = 0; i < panel_nodes.size(); i++) {
  98     SG_LOG(SG_INPUT, SG_DEBUG, "Loading a panel");
  99     FGPanelNode * panel = new FGPanelNode(panel_nodes[i]);
 100     if (panel_nodes[i]->hasValue("name"))
 101         panel->setName((char *)panel_nodes[i]->getStringValue("name"));
 102     model->addKid(panel);
 103   }
 104
 105                                 // Load animations
 106   vector<SGPropertyNode_ptr> animation_nodes = props.getChildren("animation");
 107   for (i = 0; i < animation_nodes.size(); i++) {
 108     const char * name = animation_nodes[i]->getStringValue("name", 0);
 109     vector<SGPropertyNode_ptr> name_nodes =
 110       animation_nodes[i]->getChildren("object-name");
 111     sgMakeAnimation( model, name, name_nodes, prop_root, animation_nodes[i],
 112                      sim_time_sec);
 113   }
 114
 115                                 // Load sub-models
 116   vector<SGPropertyNode_ptr> model_nodes = props.getChildren("model");
 117   for (i = 0; i < model_nodes.size(); i++) {
 118     SGPropertyNode_ptr node = model_nodes[i];
 119     ssgTransform * align = new ssgTransform;
 120     sgMat4 res_matrix;
 121     sgMakeOffsetsMatrix(&res_matrix,
 122                         node->getFloatValue("offsets/heading-deg", 0.0),
 123                         node->getFloatValue("offsets/roll-deg", 0.0),
 124                         node->getFloatValue("offsets/pitch-deg", 0.0),
 125                         node->getFloatValue("offsets/x-m", 0.0),
 126                         node->getFloatValue("offsets/y-m", 0.0),
 127                         node->getFloatValue("offsets/z-m", 0.0));
 128     align->setTransform(res_matrix);
 129
 130     ssgBranch * kid = sgLoad3DModel( fg_root, node->getStringValue("path"),
 131                                      prop_root, sim_time_sec );
 132     align->addKid(kid);
 133     model->addKid(align);
 134   }
 135
 136   return alignmainmodel;
 137 }
 138
 139
 140 // end of model_panel.cxx