| Geant4 Cross Reference |
1 // Copyright (C) 2010, Guy Barrand. All rights
2 // See the file tools.license for terms.
3
4 #ifndef tools_sg_mnmx
5 #define tools_sg_mnmx
6
7 #include "node"
8 #include "bbox_action"
9
10 namespace tools {
11
12 inline bool mnmx(std::ostream& a_out,sg::node&
13 sg::bbox_action action(a_out);
14 a_node.bbox(action);
15 if(!action.end() || action.box().is_empty())
16 a_out << "tools::mnmx :"
17 << " bbox problem."
18 << std::endl;
19 a_mn.set_value(0,0,0);
20 a_mx.set_value(0,0,0);
21 return false;
22 }
23 a_mn = action.box().mn();
24 a_mx = action.box().mx();
25 return true;
26 }
27
28 }
29
30 #include "matrix"
31
32 namespace tools {
33
34 inline bool center_adjust(std::ostream& a_out,
35 sg::node& a_node,sg:
36 unsigned int a_ww,un
37 float a_height,
38 float& a_dx,float& a
39 bool a_verbose = tru
40 //NOTE : we assume an ortho camera.
41 if(!a_ww||!a_wh) {
42 if(a_verbose) {
43 a_out << "tools::center_adjust :"
44 << " null viewer width or height."
45 << std::endl;
46 }
47 a_dx = 0;a_dy = 0;a_dz = 0;
48 return false;
49 }
50 sg::bbox_action _action(a_out);
51 a_node.bbox(_action);
52 if(!_action.box().get_size(a_dx,a_dy,a_dz))
53 if(a_verbose) {
54 a_out << "tools::center_adjust :"
55 << " empty box."
56 << std::endl;
57 }
58 a_dx = 0;a_dy = 0;a_dz = 0;
59 return false;
60 }
61 if(!a_dx||!a_dy) {
62 if(a_verbose) {
63 a_out << "tools::center_adjust :"
64 << " dx or dy null."
65 << std::endl;
66 }
67 a_dx = 0;a_dy = 0;a_dz = 0;
68 return false;
69 }
70 vec3f c;
71 if(!_action.box().center(c)) {
72 if(a_verbose) {
73 a_out << "tools::center_adjust :"
74 << " can't get box center."
75 << std::endl;
76 }
77 a_dx = 0;a_dy = 0;a_dz = 0;
78 return false;
79 }
80 float vp_aspect = float(a_ww)/float(a_wh);
81 float scene_aspect = float(a_dx)/float(a_dy)
82 //::printf("debug : set_tsf : %d %d : %g %g
83 // a_ww,a_wh,a_dx,a_dy,a_dz,vp_aspect,sce
84 float scale;
85 if(vp_aspect>=scene_aspect) {
86 scale = a_height/a_dy;
87 } else {
88 scale = (vp_aspect*a_height)/a_dx;
89 }
90 a_tsf.set_scale(scale,scale,scale);
91 a_tsf.mul_translate(-c.x(),-c.y(),0);
92 return true;
93 }
94
95 inline bool center_adjust(std::ostream& a_out,
96 sg::node& a_node,sg:
97 unsigned int a_ww,un
98 float a_height,bool
99 float dx,dy,dz;
100 return center_adjust(a_out,a_node,a_tsf,a_ww
101 dx,dy,dz,a_verbose);
102 }
103
104 }
105
106 #endif