source/engineer/clockwidget.cpp

   1 #include <msp/gl/meshbuilder.h>
   2 #include <msp/gl/renderer.h>
   3 #include <msp/gltk/graphic.h>
   4 #include <msp/gltk/part.h>
   5 #include "clockwidget.h"
   6
   7 using namespace std;
   8 using namespace Msp;
   9
  10 ClockWidget::ClockWidget(R2C2::Clock &c):
  11         clock(c),
  12         hour_hand((GL::VERTEX2, GL::TEXCOORD2, GL::COLOR4_UBYTE)),
  13         minute_hand((GL::VERTEX2, GL::TEXCOORD2, GL::COLOR4_UBYTE))
  14 { }
  15
  16 void ClockWidget::rebuild_special(const GLtk::Part &part)
  17 {
  18         if(part.get_name()=="hourhand" || part.get_name()=="minutehand")
  19         {
  20                 bool minute = (part.get_name()=="minutehand");
  21                 GL::Mesh &mesh = (minute ? minute_hand : hour_hand);
  22
  23                 const GLtk::Graphic *graphic = part.get_graphic(state);
  24                 const GLtk::Alignment &align = part.get_alignment();
  25
  26                 mesh.clear();
  27                 GL::MeshBuilder bld(mesh);
  28                 bld.matrix() *= GL::Matrix::translation(GL::Vector3(graphic->get_width()*-align.x, graphic->get_height()*-align.y, 0));
  29                 graphic->build(graphic->get_width(), graphic->get_height(), bld);
  30
  31                 part_cache.insert_special(part);
  32         }
  33 }
  34
  35 void ClockWidget::render_special(const GLtk::Part &part, GL::Renderer &renderer) const
  36 {
  37         if(part.get_name()=="hourhand" || part.get_name()=="minutehand")
  38         {
  39                 bool minute = (part.get_name()=="minutehand");
  40                 const GL::Mesh &mesh = (minute ? minute_hand : hour_hand);
  41
  42                 float orientation = clock.get_current_time()/((minute ? 1 : 12)*Time::hour);
  43                 Geometry::Angle<float> angle = Geometry::Angle<float>::from_turns(orientation);
  44
  45                 GL::Renderer::Push push(renderer);
  46                 renderer.matrix_stack() *= GL::Matrix::translation(GL::Vector3(geom.w*0.5f, geom.h*0.5f, 0.0f));
  47                 renderer.matrix_stack() *= GL::Matrix::rotation(angle, GL::Vector3(0, 0, -1));
  48                 mesh.draw(renderer);
  49         }
  50 }