source/3d/view.cpp

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2011 Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <msp/gl/tests.h>
   9 #include "layout.h"
  10 #include "track.h"
  11 #include "view.h"
  12
  13 using namespace std;
  14 using namespace Msp;
  15
  16 namespace R2C2 {
  17
  18 View3D::View3D(Layout3D &l, unsigned w, unsigned h):
  19         layout(l),
  20         pipeline(w, h)
  21 {
  22         pipeline.set_camera(&camera);
  23         pipeline.add_renderable_for_pass(layout.get_scene(), 0);
  24
  25         GL::PipelinePass *pass = &pipeline.add_pass(0);
  26         pass->lighting = &layout.get_lighting();
  27         pass->depth_test = &GL::DepthTest::lequal();
  28
  29         camera.set_up_direction(GL::Vector3(0, 0, 1));
  30         // Y+, 60° down
  31         camera.set_look_direction(GL::Vector3(0, 0.5, -0.866));
  32
  33         view_all();
  34 }
  35
  36 void View3D::view_all(bool tight)
  37 {
  38         Vector minp;
  39         Vector maxp;
  40
  41         layout.get_bounds(minp, maxp);
  42
  43         float t = tan(camera.get_field_of_view()/2)*2;
  44         float size = max((maxp.y-minp.y+0.1), (maxp.x-minp.x+0.1)/camera.get_aspect());
  45         float dist = size/t;
  46         if(!tight)
  47                 dist += sin(camera.get_field_of_view()/2)*size;
  48         GL::Vector3 center((minp.x+maxp.x)/2, (minp.y+maxp.y)/2, 0);
  49         const GL::Vector3 &look = camera.get_look_direction();
  50         camera.set_position(GL::Vector3(center.x-look.x*dist, center.y-look.y*dist, center.z-look.z*dist));
  51 }
  52
  53 void View3D::render()
  54 {
  55         pipeline.render_all();
  56 }
  57
  58 } // namespace R2C2