3 This file is part of the MSP Märklin suite
4 Copyright © 2006-2009 Mikkosoft Productions, Mikko Rasa
5 Distributed under the GPL
10 #include <msp/gl/misc.h>
11 #include "libmarklin/tracktype.h"
19 Track3D::Track3D(Track &t, unsigned q):
22 varray((GL::NORMAL3, GL::VERTEX3)),
28 void Track3D::set_quality(unsigned q)
34 void Track3D::get_bounds(float angle, Point &minp, Point &maxp) const
36 const Point &pos=track.get_position();
37 float rot=track.get_rotation();
42 minp.x=maxp.x=c*pos.x-s*pos.y;
43 minp.y=maxp.y=s*pos.x+c*pos.y;
45 float c2=cos(rot-angle);
46 float s2=sin(rot-angle);
48 for(vector<Point>::const_iterator i=border.begin(); i!=border.end(); ++i)
50 float x=c*pos.x-s*pos.y + c2*i->x-s2*i->y;
51 float y=s*pos.x+c*pos.y + s2*i->x+c2*i->y;
53 minp.x=min(minp.x, x);
54 minp.y=min(minp.y, y);
55 maxp.x=max(maxp.x, x);
56 maxp.y=max(maxp.y, y);
60 void Track3D::render() const
64 glPushName(reinterpret_cast<unsigned>(this));
67 glColor4f(0.25*color.r, 0.25*color.g, 0.25*color.b, 1);
68 glDrawElements(GL_QUADS, base_seq.size(), GL_UNSIGNED_INT, &base_seq[0]);
71 glColor4f(0.85*color.r, 0.85*color.g, 0.85*color.b, 1);
72 glDrawElements(GL_QUADS, rail_seq.size(), GL_UNSIGNED_INT, &rail_seq[0]);
79 void Track3D::render_endpoints() const
83 const vector<Endpoint> &endpoints=track.get_type().get_endpoints();
84 for(unsigned i=0; i<endpoints.size(); ++i)
86 const Endpoint &ep=endpoints[i];
87 GL::set(GL_CULL_FACE, track.get_link(i));
89 glColor4f(0.5, 0, 1, 0.5);
91 glColor4f(1, 0, 0.5, 0.5);
97 glVertex3f(ep.pos.x-s*0.025, ep.pos.y+c*0.025, 0);
98 glVertex3f(ep.pos.x+s*0.025, ep.pos.y-c*0.025, 0);
99 glVertex3f(ep.pos.x+s*0.025, ep.pos.y-c*0.025, 0.02);
100 glVertex3f(ep.pos.x-s*0.025, ep.pos.y+c*0.025, 0.02);
107 void Track3D::render_route(int route) const
112 if(route>=0 && static_cast<unsigned>(route)<route_seq.size())
113 glDrawElements(GL_QUADS, route_seq[route].size(), GL_UNSIGNED_INT, &route_seq[route][0]);
116 for(unsigned i=0; i<route_seq.size(); ++i)
117 glDrawElements(GL_QUADS, route_seq[i].size(), GL_UNSIGNED_INT, &route_seq[i][0]);
123 void Track3D::prepare_render() const
125 const Point &pos=track.get_position();
126 float rot=track.get_rotation();
129 glTranslatef(pos.x, pos.y, pos.z);
130 glRotatef(rot*180/M_PI, 0, 0, 1);
133 void Track3D::build_object()
136 GL::VertexArrayBuilder builder(varray);
141 route_seq.resize(track.get_type().get_n_routes());
143 const vector<TrackPart> &parts=track.get_type().get_parts();
145 for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
146 build_part(*i, builder, index);
149 void Track3D::build_part(const TrackPart &part, GL::VertexArrayBuilder &va_builder, unsigned &base_index)
151 static vector<Point> profile;
154 profile.push_back(Point(0, -0.02, 0));
155 profile.push_back(Point(0, -0.014, 0.008));
156 profile.push_back(Point(0, -0.014, 0.008));
157 profile.push_back(Point(0, 0.014, 0.008));
158 profile.push_back(Point(0, 0.014, 0.008));
159 profile.push_back(Point(0, 0.02, 0));
160 for(unsigned i=0; i<2; ++i)
162 profile.push_back(Point(0, -0.009+i*0.017, 0.008));
163 profile.push_back(Point(0, -0.009+i*0.017, 0.0103));
164 profile.push_back(Point(0, -0.009+i*0.017, 0.0103));
165 profile.push_back(Point(0, -0.008+i*0.017, 0.0103));
166 profile.push_back(Point(0, -0.008+i*0.017, 0.0103));
167 profile.push_back(Point(0, -0.008+i*0.017, 0.008));
169 profile.push_back(Point(0, -0.002, 0.012));
170 profile.push_back(Point(0, 0.002, 0.012));
172 static unsigned psize=profile.size();
174 unsigned nsegs=(part.radius ? static_cast<unsigned>(part.length*(1<<quality))+1 : 1);
175 float plen=part.length;
177 plen*=abs(part.radius);
179 for(unsigned i=0; i<=nsegs; ++i)
181 float a=part.dir+(part.radius ? i*plen/nsegs/part.radius : 0);
184 Point p=part.get_point(i*plen/nsegs);
186 for(unsigned j=0; j<profile.size(); ++j)
189 float dy=profile[k+1].y-profile[k].y;
190 float dz=profile[k+1].z-profile[k].z;
191 float d=sqrt(dy*dy+dz*dz);
192 va_builder.normal(s*dz/d, -c*dz/d, dy/d);
194 Point v(p.x+c*profile[j].x-s*profile[j].y, p.y+c*profile[j].y+s*profile[j].x, profile[j].z+i*track.get_slope()/nsegs);
195 va_builder.vertex(v.x, v.y, v.z);
201 for(unsigned i=0; i<nsegs; ++i)
203 for(unsigned j=0; j<3; ++j)
205 base_seq.push_back(base_index+i*psize+j*2);
206 base_seq.push_back(base_index+(i+1)*psize+j*2);
207 base_seq.push_back(base_index+(i+1)*psize+1+j*2);
208 base_seq.push_back(base_index+i*psize+1+j*2);
210 for(unsigned j=3; j<9; ++j)
212 rail_seq.push_back(base_index+i*psize+j*2);
213 rail_seq.push_back(base_index+(i+1)*psize+j*2);
214 rail_seq.push_back(base_index+(i+1)*psize+1+j*2);
215 rail_seq.push_back(base_index+i*psize+1+j*2);
217 route_seq[part.route].push_back(base_index+i*psize+18);
218 route_seq[part.route].push_back(base_index+(i+1)*psize+18);
219 route_seq[part.route].push_back(base_index+(i+1)*psize+19);
220 route_seq[part.route].push_back(base_index+i*psize+19);
223 base_index+=(nsegs+1)*psize;
226 } // namespace Marklin