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1 #include <cmath>
2 #include <msp/gl/matrix.h>
3 #include <msp/gl/renderer.h>
4 #include "libr2c2/tracktype.h"
5 #include "endpoint.h"
6 #include "layout.h"
7 #include "path.h"
8 #include "track.h"
9 #include "tracktype.h"
10
11 using namespace std;
12 using namespace Msp;
13
14 namespace R2C2 {
15
16 Track3D::Track3D(Layout3D &l, Track &t):
17         GL::ObjectInstance(l.get_catalogue().get_track(t.get_type()).get_object()),
18         layout(l),
19         track(t),
20         type(layout.get_catalogue().get_track(track.get_type())),
21         path(new Path3D(*this))
22 {
23         layout.add_track(*this);
24         layout.get_scene().add(*this);
25
26         const vector<TrackType::Endpoint> &type_eps = track.get_type().get_endpoints();
27         const vector<Track *> &links = track.get_links();
28         for(unsigned i=0; i<type_eps.size(); ++i)
29         {
30                 if(!links[i] || links[i]>&track)
31                         endpoints.push_back(new Endpoint3D(*this, i));
32                 else
33                         endpoints.push_back(0);
34         }
35
36         track.signal_link_changed.connect(sigc::mem_fun(this, &Track3D::link_changed));
37 }
38
39 Track3D::~Track3D()
40 {
41         delete path;
42
43         layout.remove_track(*this);
44         layout.get_scene().remove(*this);
45
46         for(vector<Endpoint3D *>::iterator i=endpoints.begin(); i!=endpoints.end(); ++i)
47                 delete *i;
48 }
49
50 void Track3D::get_bounds(float angle, Vector &minp, Vector &maxp) const
51 {
52         type.get_bounds(angle-track.get_rotation(), minp, maxp);
53
54         float c = cos(-angle);
55         float s = sin(-angle);
56
57         const Vector &pos = track.get_position();
58         minp.x += c*pos.x-s*pos.y;
59         maxp.x += c*pos.x-s*pos.y;
60         minp.y += s*pos.x+c*pos.y;
61         maxp.y += s*pos.x+c*pos.y;
62         minp.z += pos.z;
63         maxp.z += pos.z;
64
65         float slope = track.get_slope();
66         if(slope>0)
67                 maxp.z += slope;
68         else
69                 minp.z += slope;
70 }
71
72 Vector Track3D::get_node() const
73 {
74         const Vector &pos = track.get_position();
75         Vector minp;
76         Vector maxp;
77         type.get_bounds(0, minp, maxp);
78         float rot = track.get_rotation();
79         float c = cos(rot);
80         float s = sin(rot);
81
82         Vector center((minp.x+maxp.x)/2, (minp.y+maxp.y)/2, 0);
83         return Vector(pos.x+c*center.x-s*center.y, pos.y+s*center.x+c*center.y, pos.z+0.02);
84 }
85
86 GL::Matrix Track3D::create_matrix() const
87 {
88         const Vector &pos = track.get_position();
89         float rot = track.get_rotation();
90
91         GL::Matrix matrix;
92         matrix.translate(pos.x, pos.y, pos.z);
93         matrix.rotate(rot, 0, 0, 1);
94         matrix.rotate(track.get_slope()/track.get_type().get_total_length(), 0, -1, 0);
95
96         return matrix;
97 }
98
99 void Track3D::setup_render(Msp::GL::Renderer &renderer, const GL::Tag &) const
100 {
101         renderer.matrix_stack() *= create_matrix();
102 }
103
104 void Track3D::link_changed(unsigned i, Track *trk)
105 {
106         if(!trk || trk>&track)
107         {
108                 if(!endpoints[i])
109                         endpoints[i] = new Endpoint3D(*this, i);
110         }
111         else if(endpoints[i])
112         {
113                 delete endpoints[i];
114                 endpoints[i] = 0;
115         }
116 }
117
118 } // namespace R2C2