#include <simgear/debug/logstream.hxx>
#include <simgear/math/sg_types.hxx>
#include <simgear/scene/tgdb/leaf.hxx>
+#include <simgear/scene/material/mat.hxx>
+#include <simgear/scene/material/matlib.hxx>
#include "apt_signs.hxx"
-
+#define TAXI "OBJECT_TAXI_SIGN: "
+#define RWY "OBJECT_RUNWAY_SIGN: "
+
+
+// for temporary storage of sign elements
+struct element_info {
+ element_info(SGMaterial *m, SGMaterialGlyph *g) : material(m), glyph(g) {}
+ SGMaterial *material;
+ SGMaterialGlyph *glyph;
+};
+
+
+// translation table for 'command' to glyph name
+struct pair {
+ const char *keyword;
+ const char *glyph_name;
+} cmds[] = {
+ {"l", "left"},
+ {"lu", "up-left"},
+ {"ld", "down-left"},
+ {"r", "right"},
+ {"ru", "up-right"},
+ {"rd", "down-right"},
+ {"u", "up"},
+ {"ul", "up-left"},
+ {"ur", "up-right"},
+ {"d", "down"},
+ {"dl", "down-left"},
+ {"dr", "down-right"},
+ {"no-exit", "no-exit"},
+ {0, 0},
+};
+
+
+// Y ... black on yellow -> direction, destination, boundary
+// R ... white on red -> mandatory instruction
+// L ... yellow on black with frame -> runway/taxiway location
+// B ... white on black -> runway distance remaining
+//
+// u/d/l/r ... up/down/left/right arrow or two-letter combinations
+// thereof (ur, dl, ...)
+//
+// Example: {l}E|{L}[T]|{Y,ur}L|E{r}
+//
ssgBranch *sgMakeTaxiSign( SGMaterialLib *matlib,
const string path, const string content )
{
- // for demo purposes we assume each element (letter) is 1x1 meter.
- // Sign is placed 0.25 meters above the ground
+ const double sign_height = 1.0; // meter TODO make configurable
+
+ vector<element_info *> elements;
+ double total_width = 0.0;
+ bool cmd = false;
+ char *newmat = "YellowSign";
ssgBranch *object = new ssgBranch();
- object->setName( (char *)content.c_str() );
-
- double offset = content.length() / 2.0;
-
- for ( unsigned int i = 0; i < content.length(); ++i ) {
- string material;
-
- char item = content[i];
- if ( item == '<' ) {
- material = "ArrowL.rgb";
- } else if ( item == '>' ) {
- material = "ArrowR.rgb";
- } else if ( item >= 'A' && item <= 'Z' ) {
- material = "Letter";
- material += item;
- material += ".rgb";
- } else if ( item >= 'a' && item <= 'z' ) {
- int tmp = item - 'a';
- char c = 'A' + tmp;
- material = "Black";
- material += c;
- material += ".rgb";
- } else {
- SG_LOG( SG_TERRAIN, SG_ALERT,
- "Unknown taxi sign code = '" << item << "' !!!!" );
- return NULL;
- }
-
- point_list nodes; nodes.clear();
- point_list normals; normals.clear();
- point_list texcoords; texcoords.clear();
- int_list vertex_index; vertex_index.clear();
- int_list normal_index; normal_index.clear();
- int_list tex_index; tex_index.clear();
-
- nodes.push_back( Point3D( -offset + i, 0, 0.25 ) );
- nodes.push_back( Point3D( -offset + i + 1, 0, 0.25 ) );
- nodes.push_back( Point3D( -offset + i, 0, 1.25 ) );
- nodes.push_back( Point3D( -offset + i + 1, 0, 1.25 ) );
-
- normals.push_back( Point3D( 0, -1, 0 ) );
-
- texcoords.push_back( Point3D( 0, 0, 0 ) );
- texcoords.push_back( Point3D( 1, 0, 0 ) );
- texcoords.push_back( Point3D( 0, 1, 0 ) );
- texcoords.push_back( Point3D( 1, 1, 0 ) );
-
- vertex_index.push_back( 0 );
- vertex_index.push_back( 1 );
- vertex_index.push_back( 2 );
- vertex_index.push_back( 3 );
-
- normal_index.push_back( 0 );
- normal_index.push_back( 0 );
- normal_index.push_back( 0 );
- normal_index.push_back( 0 );
-
- tex_index.push_back( 0 );
- tex_index.push_back( 1 );
- tex_index.push_back( 2 );
- tex_index.push_back( 3 );
-
- ssgLeaf *leaf = sgMakeLeaf( path, GL_TRIANGLE_STRIP, matlib, material,
- nodes, normals, texcoords,
- vertex_index, normal_index, tex_index,
- false, NULL );
-
- object->addKid( leaf );
+ object->setName((char *)content.c_str());
+ SGMaterial *material = matlib->find(newmat);
+
+ for (const char *s = content.data(); *s; s++) {
+ string name;
+ const char *newmat = 0;
+
+ if (*s == '{') {
+ if (cmd)
+ SG_LOG(SG_TERRAIN, SG_ALERT, TAXI "unexpected { in sign contents");
+ cmd = true;
+ continue;
+ } else if (*s == '}') {
+ if (!cmd)
+ SG_LOG(SG_TERRAIN, SG_ALERT, TAXI "unexpected } in sign contents");
+ cmd = false;
+ continue;
+ } else if (cmd) {
+ if (*s == ',')
+ continue;
+ else if (*s == 'Y')
+ newmat = "YellowSign";
+ else if (*s == 'R')
+ newmat = "RedSign";
+ else if (*s == 'L')
+ newmat = "FramedSign";
+ else if (*s == 'B')
+ newmat = "BlackSign";
+ else {
+ // find longest match of cmds[]
+ int maxlen = 0, len;
+ for (int i = 0; cmds[i].keyword; i++) {
+ len = strlen(cmds[i].keyword);
+ if (!strncmp(s, cmds[i].keyword, len)) {
+ maxlen = len;
+ name = cmds[i].glyph_name;
+ }
+ }
+ if (maxlen)
+ s += maxlen - 1;
+ }
+ if (s[1] != ',' && s[1] != '}')
+ SG_LOG(SG_TERRAIN, SG_ALERT, TAXI "garbage after command `" << s << '\'');
+
+ if (newmat) {
+ material = matlib->find(newmat);
+ continue;
+ }
+
+ if (name.empty()) {
+ SG_LOG(SG_TERRAIN, SG_ALERT, TAXI "unknown command `" << s << '\'');
+ continue;
+ }
+ } else
+ name = *s;
+
+ if (!material) {
+ SG_LOG( SG_TERRAIN, SG_ALERT, TAXI "material doesn't exit");
+ continue;
+ }
+
+ SGMaterialGlyph *glyph = material->get_glyph(name);
+ if (!glyph) {
+ SG_LOG( SG_TERRAIN, SG_ALERT, TAXI "unsupported character `" << *s << '\'');
+ continue;
+ }
+
+ elements.push_back(new element_info(material, glyph));
+ total_width += glyph->get_width() * material->get_xscale();
+ }
+
+ double hpos = -total_width / 2;
+
+ sgVec3 normal;
+ sgSetVec3(normal, 0, -1, 0);
+
+ sgVec4 color;
+ sgSetVec4(color, 1.0, 1.0, 1.0, 1.0);
+
+ for (unsigned int i = 0; i < elements.size(); i++) {
+ element_info *element = elements[i];
+
+ double xoffset = element->glyph->get_left();
+ double width = element->glyph->get_width();
+ double abswidth = width * element->material->get_xscale();
+
+ // vertices
+ ssgVertexArray *vl = new ssgVertexArray(4);
+ vl->add(hpos, 0, 0);
+ vl->add(hpos + abswidth, 0, 0);
+ vl->add(hpos, 0, sign_height);
+ vl->add(hpos + abswidth, 0, sign_height);
+
+ // texture coordinates
+ ssgTexCoordArray *tl = new ssgTexCoordArray(4);
+ tl->add(xoffset, 0);
+ tl->add(xoffset + width, 0);
+ tl->add(xoffset, 1);
+ tl->add(xoffset + width, 1);
+
+ // normals
+ ssgNormalArray *nl = new ssgNormalArray(1);
+ nl->add(normal);
+
+ // colors
+ ssgColourArray *cl = new ssgColourArray(1);
+ cl->add(color);
+
+ ssgLeaf *leaf = new ssgVtxTable(GL_TRIANGLE_STRIP, vl, nl, tl, cl);
+ ssgSimpleState *state = element->material->get_state();
+ //if (!lighted)
+ // state->setMaterial(GL_EMISSION, 0, 0, 0, 1);
+ leaf->setState(state);
+
+ object->addKid(leaf);
+ hpos += abswidth;
+ delete element;
}
return object;
}
+
+
+
ssgBranch *sgMakeRunwaySign( SGMaterialLib *matlib,
const string path, const string name )
{
double width = name.length() / 3.0;
- string material = name + ".rgb";
+ string material = name;
- point_list nodes; nodes.clear();
- point_list normals; normals.clear();
- point_list texcoords; texcoords.clear();
- int_list vertex_index; vertex_index.clear();
- int_list normal_index; normal_index.clear();
- int_list tex_index; tex_index.clear();
+ point_list nodes;
+ point_list normals;
+ point_list texcoords;
+ int_list vertex_index;
+ int_list normal_index;
+ int_list tex_index;
nodes.push_back( Point3D( -width, 0, 0.25 ) );
nodes.push_back( Point3D( width + 1, 0, 0.25 ) );
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