//
// Written by Curtis Olson, started July 2001.
//
-// Copyright (C) 2001 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 2001 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// 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.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
+#ifdef HAVE_CONFIG_H
+# include <simgear_config.h>
+#endif
+
+#include <vector>
+#include <boost/foreach.hpp>
+
+#include <osg/Geode>
+#include <osg/Geometry>
+#include <osg/Group>
+#include <osg/MatrixTransform>
+#include <osg/StateSet>
#include <simgear/debug/logstream.hxx>
#include <simgear/math/sg_types.hxx>
-#include <simgear/scene/tgdb/leaf.hxx>
+#include <simgear/scene/material/Effect.hxx>
+#include <simgear/scene/material/EffectGeode.hxx>
+#include <simgear/scene/material/mat.hxx>
+#include <simgear/scene/material/matlib.hxx>
#include "apt_signs.hxx"
+#define SIGN "OBJECT_SIGN: "
+
+using std::vector;
+using namespace simgear;
-ssgBranch *sgMakeTaxiSign( SGMaterialLib *matlib,
- const string path, const string content )
+// for temporary storage of sign elements
+struct element_info {
+ element_info(SGMaterial *m, Effect *s, SGMaterialGlyph *g, double h, double c)
+ : material(m), state(s), glyph(g), height(h), coverwidth(c)
+ {
+ scale = h * m->get_xsize()
+ / (m->get_ysize() < 0.001 ? 1.0 : m->get_ysize());
+ abswidth = c == 0 ? g->get_width() * scale : c;
+ }
+ SGMaterial *material;
+ Effect *state;
+ SGMaterialGlyph *glyph;
+ double height;
+ double scale;
+ double abswidth;
+ double coverwidth;
+};
+
+typedef std::vector<element_info*> ElementVec;
+
+
+
+
+const double HT[5] = {0.460, 0.610, 0.760, 1.220, 0.760}; // standard panel height sizes
+const double grounddist = 0.2; // hard-code sign distance from surface for now
+const double thick = 0.1; // half the thickness of the 3D sign
+
+
+// translation table for "command" to "glyph name"
+struct pair {
+ const char *keyword;
+ const char *glyph_name;
+} cmds[] = {
+ {"@u", "^u"},
+ {"@d", "^d"},
+ {"@l", "^l"},
+ {"@lu", "^lu"},
+ {"@ul", "^lu"},
+ {"@ld", "^ld"},
+ {"@dl", "^ld"},
+ {"@r", "^r"},
+ {"@ru", "^ru"},
+ {"@ur", "^ru"},
+ {"@rd", "^rd"},
+ {"@dr", "^rd"},
+ {0, 0},
+};
+
+struct GlyphGeometry
{
- // for demo purposes we assume each element (letter) is 1x1 meter.
- // Sign is placed 0.25 meters above the ground
-
- 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 );
+ osg::DrawArrays* quads;
+ osg::Vec2Array* uvs;
+ osg::Vec3Array* vertices;
+ osg::Vec3Array* normals;
+
+ void addGlyph(SGMaterialGlyph* glyph, double x, double y, double width, double height, const osg::Matrix& xform)
+ {
+
+ vertices->push_back(xform.preMult(osg::Vec3(thick, x, y)));
+ vertices->push_back(xform.preMult(osg::Vec3(thick, x + width, y)));
+ vertices->push_back(xform.preMult(osg::Vec3(thick, x + width, y + height)));
+ vertices->push_back(xform.preMult(osg::Vec3(thick, x, y + height)));
+
+ // texture coordinates
+ double xoffset = glyph->get_left();
+ double texWidth = glyph->get_width();
+
+ uvs->push_back(osg::Vec2(xoffset, 0));
+ uvs->push_back(osg::Vec2(xoffset + texWidth, 0));
+ uvs->push_back(osg::Vec2(xoffset + texWidth, 1));
+ uvs->push_back(osg::Vec2(xoffset, 1));
+
+ // normals
+ for (int i=0; i<4; ++i)
+ normals->push_back(xform.preMult(osg::Vec3(0, -1, 0)));
+
+ quads->setCount(vertices->size());
+ }
+
+ void addSignCase(double caseWidth, double caseHeight, const osg::Matrix& xform)
+ {
+ vertices->push_back(osg::Vec3(-thick, -caseWidth, grounddist));
+ vertices->push_back(osg::Vec3(thick, -caseWidth, grounddist));
+ vertices->push_back(osg::Vec3(thick, -caseWidth, grounddist + caseHeight));
+ vertices->push_back(osg::Vec3(-thick, -caseWidth, grounddist + caseHeight));
+
+
+ for (int i=0; i<4; ++i)
+ normals->push_back(xform.preMult(osg::Vec3(-1, 0.0, 0)));
+
+ vertices->push_back(osg::Vec3(-thick, -caseWidth, grounddist + caseHeight));
+ vertices->push_back(osg::Vec3(thick, -caseWidth, grounddist + caseHeight));
+ vertices->push_back(osg::Vec3(thick, caseWidth, grounddist + caseHeight));
+ vertices->push_back(osg::Vec3(-thick, caseWidth, grounddist + caseHeight));
+
+ for (int i=0; i<4; ++i)
+ normals->push_back(xform.preMult(osg::Vec3(0, 0, 1)));
+
+ vertices->push_back(osg::Vec3(-thick, caseWidth, grounddist + caseHeight));
+ vertices->push_back(osg::Vec3(thick, caseWidth, grounddist + caseHeight));
+ vertices->push_back(osg::Vec3(thick, caseWidth, grounddist));
+ vertices->push_back(osg::Vec3(-thick, caseWidth, grounddist));
+
+ for (int i=0; i<4; ++i)
+ normals->push_back(xform.preMult(osg::Vec3(1, 0.0, 0)));
+
+ for (int i = 0; i < 3; ++i) {
+ uvs->push_back(osg::Vec2(1, 1));
+ uvs->push_back(osg::Vec2(0.75, 1));
+ uvs->push_back(osg::Vec2(0.75, 0));
+ uvs->push_back(osg::Vec2(1, 0));
}
+
+ quads->setCount(vertices->size());
+ }
+};
- return object;
-}
+typedef std::map<Effect*, GlyphGeometry*> EffectGeometryMap;
-
-ssgBranch *sgMakeRunwaySign( SGMaterialLib *matlib,
- const string path, const string name )
+void SGMakeSignFace(EffectGeometryMap& glyphs, const ElementVec& elements, double hpos, const osg::Matrix& xform)
{
- // for demo purposes we assume each element (letter) is 1x1 meter.
- // Sign is placed 0.25 meters above the ground
-
- ssgBranch *object = new ssgBranch();
- object->setName( (char *)name.c_str() );
-
- double width = name.length() / 3.0;
-
- string material = name + ".rgb";
-
- 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( -width, 0, 0.25 ) );
- nodes.push_back( Point3D( width + 1, 0, 0.25 ) );
- nodes.push_back( Point3D( -width, 0, 1.25 ) );
- nodes.push_back( Point3D( width + 1, 0, 1.25 ) );
+ BOOST_FOREACH(element_info* element, elements) {
+ GlyphGeometry* gg = glyphs[element->state];
+ gg->addGlyph(element->glyph, hpos, grounddist, element->abswidth, element->height, xform);
+ hpos += element->abswidth;
+ delete element;
+ }
+}
- normals.push_back( Point3D( 0, -1, 0 ) );
+GlyphGeometry* makeGeometry(Effect* eff, osg::Group* group)
+{
+ GlyphGeometry* gg = new GlyphGeometry;
+
+ EffectGeode* geode = new EffectGeode;
+ geode->setEffect(eff);
+
+ gg->vertices = new osg::Vec3Array;
+ gg->normals = new osg::Vec3Array;
+ gg->uvs = new osg::Vec2Array;
+
+ osg::Vec4Array* cl = new osg::Vec4Array;
+ cl->push_back(osg::Vec4(1, 1, 1, 1));
+
+ osg::Geometry* geometry = new osg::Geometry;
+ geometry->setVertexArray(gg->vertices);
+ geometry->setNormalArray(gg->normals);
+ geometry->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
+ geometry->setColorArray(cl);
+ geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
+ geometry->setTexCoordArray(0, gg->uvs);
+
+ gg->quads = new osg::DrawArrays(GL_QUADS, 0, gg->vertices->size());
+ geometry->addPrimitiveSet(gg->quads);
+ geode->addDrawable(geometry);
+ group->addChild(geode);
+ return gg;
+}
- 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 ) );
+// see $FG_ROOT/Docs/README.scenery
+//
+osg::Node*
+SGMakeSign(SGMaterialLib *matlib, const string& content)
+{
+ double sign_height = 1.0; // meter
+ string newmat = "BlackSign";
+ ElementVec elements1, elements2;
+ element_info *close1 = 0;
+ element_info *close2 = 0;
+ double total_width1 = 0.0;
+ double total_width2 = 0.0;
+ bool cmd = false;
+ bool isBackside = false;
+ int size = -1;
+ char oldtype = 0, newtype = 0;
+
+ EffectGeometryMap geoms;
+
+ osg::Group* object = new osg::Group;
+ object->setName(content);
+
+ SGMaterial *material = 0;
+
+ // Part I: parse & measure
+ for (const char *s = content.data(); *s; s++) {
+ string name;
+ string value;
+
+ if (*s == '{') {
+ if (cmd)
+ SG_LOG(SG_TERRAIN, SG_ALERT, SIGN "Illegal taxiway sign syntax. Unexpected '{' in '" << content << "'.");
+ cmd = true;
+ continue;
+
+ } else if (*s == '}') {
+ if (!cmd)
+ SG_LOG(SG_TERRAIN, SG_ALERT, SIGN "Illegal taxiway sign syntax. Unexpected '}' in '" << content << "'.");
+ cmd = false;
+ continue;
+
+ } else if (!cmd) {
+ name = *s;
+
+ } else {
+ if (*s == ',')
+ continue;
+
+ for (; *s; s++) {
+ name += *s;
+ if (s[1] == ',' || s[1] == '}' || s[1] == '=')
+ break;
+ }
+ if (!*s) {
+ SG_LOG(SG_TERRAIN, SG_ALERT, SIGN "unclosed { in sign contents");
+ } else if (s[1] == '=') {
+ for (s += 2; *s; s++) {
+ value += *s;
+ if (s[1] == ',' || s[1] == '}')
+ break;
+ }
+ if (!*s)
+ SG_LOG(SG_TERRAIN, SG_ALERT, SIGN "unclosed { in sign contents");
+ }
+
+ if (name == "@@") {
+ isBackside = true;
+ continue;
+ }
+
+ if (name == "@size") {
+ sign_height = strtod(value.data(), 0);
+ continue;
+ }
+
+ if (name.size() == 2 || name.size() == 3) {
+ string n = name;
+ if (n.size() == 3 && n[2] >= '1' && n[2] <= '5') {
+ size = n[2] - '1';
+ n = n.substr(0, 2);
+ }
+ if (n == "@Y") {
+ if (size < 3) {
+ sign_height = HT[size < 0 ? 2 : size];
+ newmat = "YellowSign";
+ newtype = 'Y';
+ continue;
+ }
+
+ } else if (n == "@R") {
+ if (size < 3) {
+ sign_height = HT[size < 0 ? 2 : size];
+ newmat = "RedSign";
+ newtype = 'R';
+ continue;
+ }
+
+ } else if (n == "@L") {
+ if (size < 3) {
+ sign_height = HT[size < 0 ? 2 : size];
+ newmat = "FramedSign";
+ newtype = 'L';
+ continue;
+ }
+
+ } else if (n == "@B") {
+ if (size < 0 || size == 3 || size == 4) {
+ sign_height = HT[size < 0 ? 3 : size];
+ newmat = "BlackSign";
+ newtype = 'B';
+ continue;
+ }
+ }
+ }
+
+ for (int i = 0; cmds[i].keyword; i++) {
+ if (name == cmds[i].keyword) {
+ name = cmds[i].glyph_name;
+ break;
+ }
+ }
+
+ if (name[0] == '@') {
+ SG_LOG(SG_TERRAIN, SG_ALERT, SIGN "ignoring unknown command `" << name << '\'');
+ continue;
+ }
+ }
+
+ if (newmat.size()) {
+ material = matlib->find(newmat);
+ newmat.clear();
+ }
+
+ SGMaterialGlyph *glyph = material->get_glyph(name);
+ if (!glyph) {
+ SG_LOG( SG_TERRAIN, SG_ALERT, SIGN "unsupported glyph '" << *s << '\'');
+ continue;
+ }
+
+ // in managed mode push frame stop and frame start first
+ Effect *state = material->get_effect();
+ if (geoms[state] == NULL) {
+ geoms[state] = makeGeometry(state, object);
+ }
+
+ element_info *e1;
+ element_info *e2;
+ if (!isBackside) {
+ if (newtype && newtype != oldtype) {
+ if (close1) {
+ elements1.push_back(close1);
+ total_width1 += close1->glyph->get_width() * close1->scale;
+ close1 = 0;
+ }
+ oldtype = newtype;
+ SGMaterialGlyph *g = material->get_glyph("stop-frame");
+ if (g)
+ close1 = new element_info(material, state, g, sign_height, 0);
+ g = material->get_glyph("start-frame");
+ if (g) {
+ e1 = new element_info(material, state, g, sign_height, 0);
+ elements1.push_back(e1);
+ total_width1 += e1->glyph->get_width() * e1->scale;
+ }
+ }
+ // now the actually requested glyph (front)
+ e1 = new element_info(material, state, glyph, sign_height, 0);
+ elements1.push_back(e1);
+ total_width1 += e1->glyph->get_width() * e1->scale;
+ } else {
+ if (newtype && newtype != oldtype) {
+ if (close2) {
+ elements2.push_back(close2);
+ total_width2 += close2->glyph->get_width() * close2->scale;
+ close2 = 0;
+ }
+ oldtype = newtype;
+ SGMaterialGlyph *g = material->get_glyph("stop-frame");
+ if (g)
+ close2 = new element_info(material, state, g, sign_height, 0);
+ g = material->get_glyph("start-frame");
+ if (g) {
+ e2 = new element_info(material, state, g, sign_height, 0);
+ elements2.push_back(e2);
+ total_width2 += e2->glyph->get_width() * e2->scale;
+ }
+ }
+ // now the actually requested glyph (back)
+ e2 = new element_info(material, state, glyph, sign_height, 0);
+ elements2.push_back(e2);
+ total_width2 += e2->glyph->get_width() * e2->scale;
+ }
+ }
- vertex_index.push_back( 0 );
- vertex_index.push_back( 1 );
- vertex_index.push_back( 2 );
- vertex_index.push_back( 3 );
+ // in managed mode close frame
+ if (close1) {
+ elements1.push_back(close1);
+ total_width1 += close1->glyph->get_width() * close1->scale;
+ close1 = 0;
+ }
- normal_index.push_back( 0 );
- normal_index.push_back( 0 );
- normal_index.push_back( 0 );
- normal_index.push_back( 0 );
+ if (close2) {
+ elements2.push_back(close2);
+ total_width2 += close2->glyph->get_width() * close2->scale;
+ close2 = 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 );
+ // Part II: typeset
+ double boxwidth = std::max(total_width1, total_width2) * 0.5;
+ double hpos = -boxwidth;
+ SGMaterial *mat = matlib->find("signcase");
+ geoms[mat->get_effect()] = makeGeometry(mat->get_effect(), object);
+
+ double coverSize = fabs(total_width1 - total_width2) * 0.5;
+
+ if (total_width1 < total_width2) {
+ if (mat) {
+ element_info* s1 = new element_info(mat, mat->get_effect(), mat->get_glyph("cover"), sign_height, coverSize);
+ element_info* s2 = new element_info(mat, mat->get_effect(), mat->get_glyph("cover"), sign_height, coverSize);
+ elements1.insert(elements1.begin(), s1);
+ elements1.push_back(s2);
+ }
+
+ } else if (total_width2 < total_width1) {
+ if (mat) {
+ element_info* s1 = new element_info(mat, mat->get_effect(), mat->get_glyph("cover"), sign_height, coverSize);
+ element_info* s2 = new element_info(mat, mat->get_effect(), mat->get_glyph("cover"), sign_height, coverSize);
+ elements2.insert(elements2.begin(), s1);
+ elements2.push_back(s2);
+ }
+ }
- object->addKid( leaf );
+ // Create front side
+ SGMakeSignFace(geoms, elements1, hpos, osg::Matrix::identity());
+ // Create back side
+ const osg::Vec3d axis(0, 0, 1);
+ SGMakeSignFace(geoms, elements2, hpos, osg::Matrix::rotate( M_PI, axis));
+ geoms[mat->get_effect()]->addSignCase(boxwidth, sign_height, osg::Matrix::identity());
+
return object;
}
projects / simgear.git / blobdiff