rewrite of OBJECT_TAXI_SIGN code. The name is a bit misleading, as this
type can also create runway signs. (/me thinks about changing that ...)
This commit is contained in:
mfranz
@@ -27,91 +27,192 @@
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#include <simgear/debug/logstream.hxx>
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#include <simgear/math/sg_types.hxx>
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#include <simgear/scene/tgdb/leaf.hxx>
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#include <simgear/scene/material/mat.hxx>
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#include <simgear/scene/material/matlib.hxx>
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#include "apt_signs.hxx"
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#define TAXI "OBJECT_TAXI_SIGN: "
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#define RWY "OBJECT_RUNWAY_SIGN: "
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// for temporary storage of sign elements
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struct element_info {
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element_info(SGMaterial *m, SGMaterialGlyph *g) : material(m), glyph(g) {}
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SGMaterial *material;
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SGMaterialGlyph *glyph;
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};
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// translation table for 'command' to glyph name
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struct pair {
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const char *keyword;
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const char *glyph_name;
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} cmds[] = {
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{"l", "left"},
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{"lu", "up-left"},
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{"ld", "down-left"},
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{"r", "right"},
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{"ru", "up-right"},
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{"rd", "down-right"},
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{"u", "up"},
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{"ul", "up-left"},
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{"ur", "up-right"},
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{"d", "down"},
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{"dl", "down-left"},
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{"dr", "down-right"},
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{"no-exit", "no-exit"},
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{0, 0},
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};
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// Y ... black on yellow -> direction, destination, boundary
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// R ... white on red -> mandatory instruction
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// L ... yellow on black with frame -> runway/taxiway location
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// B ... white on black -> runway distance remaining
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//
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// u/d/l/r ... up/down/left/right arrow or two-letter combinations
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// thereof (ur, dl, ...)
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//
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// Example: {l}E|{L}[T]|{Y,ur}L|E{r}
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//
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ssgBranch *sgMakeTaxiSign( SGMaterialLib *matlib,
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const string path, const string content )
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{
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// for demo purposes we assume each element (letter) is 1x1 meter.
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// Sign is placed 0.25 meters above the ground
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const double sign_height = 1.0; // meter TODO make configurable
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vector<element_info *> elements;
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double total_width = 0.0;
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bool cmd = false;
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char *newmat = "YellowSign";
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ssgBranch *object = new ssgBranch();
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object->setName( (char *)content.c_str() );
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object->setName((char *)content.c_str());
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SGMaterial *material = matlib->find(newmat);
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double offset = content.length() / 2.0;
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for (const char *s = content.data(); *s; s++) {
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string name;
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const char *newmat = 0;
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for ( unsigned int i = 0; i < content.length(); ++i ) {
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string material;
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if (*s == '{') {
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if (cmd)
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SG_LOG(SG_TERRAIN, SG_ALERT, TAXI "unexpected { in sign contents");
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cmd = true;
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continue;
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} else if (*s == '}') {
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if (!cmd)
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SG_LOG(SG_TERRAIN, SG_ALERT, TAXI "unexpected } in sign contents");
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cmd = false;
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continue;
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} else if (cmd) {
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if (*s == ',')
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continue;
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else if (*s == 'Y')
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newmat = "YellowSign";
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else if (*s == 'R')
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newmat = "RedSign";
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else if (*s == 'L')
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newmat = "FramedSign";
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else if (*s == 'B')
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newmat = "BlackSign";
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else {
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// find longest match of cmds[]
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int maxlen = 0, len;
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for (int i = 0; cmds[i].keyword; i++) {
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len = strlen(cmds[i].keyword);
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if (!strncmp(s, cmds[i].keyword, len)) {
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maxlen = len;
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name = cmds[i].glyph_name;
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}
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}
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if (maxlen)
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s += maxlen - 1;
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}
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if (s[1] != ',' && s[1] != '}')
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SG_LOG(SG_TERRAIN, SG_ALERT, TAXI "garbage after command `" << s << '\'');
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char item = content[i];
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if ( item == '<' ) {
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material = "ArrowL.rgb";
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} else if ( item == '>' ) {
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material = "ArrowR.rgb";
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} else if ( item >= 'A' && item <= 'Z' ) {
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material = "Letter";
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material += item;
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material += ".rgb";
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} else if ( item >= 'a' && item <= 'z' ) {
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int tmp = item - 'a';
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char c = 'A' + tmp;
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material = "Black";
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material += c;
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material += ".rgb";
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} else {
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SG_LOG( SG_TERRAIN, SG_ALERT,
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"Unknown taxi sign code = '" << item << "' !!!!" );
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return NULL;
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}
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if (newmat) {
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material = matlib->find(newmat);
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continue;
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}
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point_list nodes; nodes.clear();
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point_list normals; normals.clear();
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point_list texcoords; texcoords.clear();
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int_list vertex_index; vertex_index.clear();
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int_list normal_index; normal_index.clear();
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int_list tex_index; tex_index.clear();
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if (name.empty()) {
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SG_LOG(SG_TERRAIN, SG_ALERT, TAXI "unknown command `" << s << '\'');
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continue;
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}
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} else
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name = *s;
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nodes.push_back( Point3D( -offset + i, 0, 0.25 ) );
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nodes.push_back( Point3D( -offset + i + 1, 0, 0.25 ) );
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nodes.push_back( Point3D( -offset + i, 0, 1.25 ) );
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nodes.push_back( Point3D( -offset + i + 1, 0, 1.25 ) );
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if (!material) {
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SG_LOG( SG_TERRAIN, SG_ALERT, TAXI "material doesn't exit");
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continue;
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}
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normals.push_back( Point3D( 0, -1, 0 ) );
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SGMaterialGlyph *glyph = material->get_glyph(name);
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if (!glyph) {
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SG_LOG( SG_TERRAIN, SG_ALERT, TAXI "unsupported character `" << *s << '\'');
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continue;
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}
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texcoords.push_back( Point3D( 0, 0, 0 ) );
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texcoords.push_back( Point3D( 1, 0, 0 ) );
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texcoords.push_back( Point3D( 0, 1, 0 ) );
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texcoords.push_back( Point3D( 1, 1, 0 ) );
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elements.push_back(new element_info(material, glyph));
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total_width += glyph->get_width() * material->get_xscale();
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}
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vertex_index.push_back( 0 );
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vertex_index.push_back( 1 );
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vertex_index.push_back( 2 );
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vertex_index.push_back( 3 );
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double hpos = -total_width / 2;
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normal_index.push_back( 0 );
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normal_index.push_back( 0 );
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normal_index.push_back( 0 );
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normal_index.push_back( 0 );
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sgVec3 normal;
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sgSetVec3(normal, 0, -1, 0);
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tex_index.push_back( 0 );
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tex_index.push_back( 1 );
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tex_index.push_back( 2 );
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tex_index.push_back( 3 );
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sgVec4 color;
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sgSetVec4(color, 1.0, 1.0, 1.0, 1.0);
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ssgLeaf *leaf = sgMakeLeaf( path, GL_TRIANGLE_STRIP, matlib, material,
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nodes, normals, texcoords,
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vertex_index, normal_index, tex_index,
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false, NULL );
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for (unsigned int i = 0; i < elements.size(); i++) {
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element_info *element = elements[i];
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object->addKid( leaf );
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double xoffset = element->glyph->get_left();
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double width = element->glyph->get_width();
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double abswidth = width * element->material->get_xscale();
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// vertices
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ssgVertexArray *vl = new ssgVertexArray(4);
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vl->add(hpos, 0, 0);
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vl->add(hpos + abswidth, 0, 0);
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vl->add(hpos, 0, sign_height);
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vl->add(hpos + abswidth, 0, sign_height);
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// texture coordinates
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ssgTexCoordArray *tl = new ssgTexCoordArray(4);
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tl->add(xoffset, 0);
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tl->add(xoffset + width, 0);
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tl->add(xoffset, 1);
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tl->add(xoffset + width, 1);
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// normals
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ssgNormalArray *nl = new ssgNormalArray(1);
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nl->add(normal);
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// colors
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ssgColourArray *cl = new ssgColourArray(1);
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cl->add(color);
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ssgLeaf *leaf = new ssgVtxTable(GL_TRIANGLE_STRIP, vl, nl, tl, cl);
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ssgSimpleState *state = element->material->get_state();
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//if (!lighted)
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// state->setMaterial(GL_EMISSION, 0, 0, 0, 1);
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leaf->setState(state);
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object->addKid(leaf);
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hpos += abswidth;
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delete element;
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}
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return object;
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}
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ssgBranch *sgMakeRunwaySign( SGMaterialLib *matlib,
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const string path, const string name )
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{
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@@ -123,14 +224,14 @@ ssgBranch *sgMakeRunwaySign( SGMaterialLib *matlib,
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double width = name.length() / 3.0;
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string material = name + ".rgb";
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string material = name;
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point_list nodes; nodes.clear();
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point_list normals; normals.clear();
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point_list texcoords; texcoords.clear();
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int_list vertex_index; vertex_index.clear();
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int_list normal_index; normal_index.clear();
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int_list tex_index; tex_index.clear();
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point_list nodes;
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point_list normals;
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point_list texcoords;
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int_list vertex_index;
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int_list normal_index;
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int_list tex_index;
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nodes.push_back( Point3D( -width, 0, 0.25 ) );
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nodes.push_back( Point3D( width + 1, 0, 0.25 ) );
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