source/3d/view.cpp

   1 #include <msp/gl/tests.h>
   2 #include "layout.h"
   3 #include "track.h"
   4 #include "view.h"
   5
   6 using namespace std;
   7 using namespace Msp;
   8
   9 namespace R2C2 {
  10
  11 View3D::View3D(Layout3D &l, unsigned w, unsigned h):
  12         layout(l),
  13         pipeline(w, h)
  14 {
  15         pipeline.set_camera(&camera);
  16         pipeline.add_renderable_for_pass(layout.get_scene(), 0);
  17
  18         GL::PipelinePass *pass = &pipeline.add_pass(0);
  19         pass->lighting = &layout.get_lighting();
  20         pass->depth_test = &GL::DepthTest::lequal();
  21
  22         camera.set_up_direction(GL::Vector3(0, 0, 1));
  23         // Y+, 60° down
  24         camera.set_look_direction(GL::Vector3(0, 0.5, -0.866));
  25
  26         view_all();
  27 }
  28
  29 void View3D::view_all(bool tight)
  30 {
  31         Vector minp;
  32         Vector maxp;
  33
  34         layout.get_bounds(minp, maxp);
  35
  36         float t = tan(camera.get_field_of_view()/2)*2;
  37         float size = max((maxp.y-minp.y+0.1), (maxp.x-minp.x+0.1)/camera.get_aspect());
  38         float dist = size/t;
  39         if(!tight)
  40                 dist += sin(camera.get_field_of_view()/2)*size;
  41         GL::Vector3 center((minp.x+maxp.x)/2, (minp.y+maxp.y)/2, 0);
  42         const GL::Vector3 &look = camera.get_look_direction();
  43         camera.set_position(GL::Vector3(center.x-look.x*dist, center.y-look.y*dist, center.z-look.z*dist));
  44 }
  45
  46 void View3D::render()
  47 {
  48         pipeline.render_all();
  49 }
  50
  51 } // namespace R2C2