source/designer/measure.cpp

   1 #include <cmath>
   2 #include <msp/gl/meshbuilder.h>
   3 #include <msp/gl/renderer.h>
   4 #include <msp/strings/format.h>
   5 #include "designer.h"
   6 #include "3d/layout.h"
   7 #include "measure.h"
   8
   9 using namespace std;
  10 using namespace R2C2;
  11 using namespace Msp;
  12
  13 Measure::Measure(Designer &d, Input::Mouse &m):
  14         Tool(d, m),
  15         start_pinned(false),
  16         mesh((GL::COLOR4_UBYTE, GL::VERTEX3))
  17 {
  18         update_mesh();
  19
  20         designer.get_layout_3d().get_scene().add(*this);
  21 }
  22
  23 Measure::~Measure()
  24 {
  25         designer.get_layout_3d().get_scene().remove(*this);
  26 }
  27
  28 void Measure::button_press(unsigned btn)
  29 {
  30         if(btn==1)
  31         {
  32                 start.position = ground_pointer;
  33                 start.rotation = Angle::zero();
  34                 snap_to_tracks(start);
  35
  36                 start_pinned = true;
  37         }
  38         else if(btn==3)
  39         {
  40                 if(start_pinned)
  41                 {
  42                         start_pinned = false;
  43                         update_mesh();
  44                 }
  45                 else
  46                         set_done(true);
  47         }
  48 }
  49
  50 void Measure::pointer_motion()
  51 {
  52         Snap sn = start;
  53         sn.position = ground_pointer;
  54         snap_to_tracks(sn);
  55         ground_pointer = sn.position;
  56
  57         if(start_pinned)
  58         {
  59                 Vector delta = rotated_vector(ground_pointer-start.position, -start.rotation);
  60
  61                 par_dist = delta.x;
  62                 perp_dist = delta.y;
  63
  64                 adiff = wrap_balanced(sn.rotation-start.rotation+Angle::half_turn());
  65
  66                 update_mesh();
  67
  68                 string info = format("Par %.1fmm - Perp %.1fmm - Total %.1fmm - Angle %.1f°", par_dist*1000, perp_dist*1000, delta.norm()*1000, adiff.degrees());
  69                 signal_status.emit(info);
  70         }
  71 }
  72
  73 void Measure::render(GL::Renderer &renderer, const GL::Tag &) const
  74 {
  75         GL::Renderer::Push push(renderer);
  76         const Vector &pos = (start_pinned ? start.position : ground_pointer);
  77         renderer.matrix_stack() *= GL::Matrix::translation(pos);
  78
  79         mesh.draw(renderer);
  80 }
  81
  82 void Measure::update_mesh()
  83 {
  84         mesh.clear();
  85         GL::MeshBuilder bld(mesh);
  86         bld.color(1.0f, 1.0f, 1.0f, 1.0f);
  87         bld.begin(GL::QUAD_STRIP);
  88         for(unsigned i=0; i<=16; ++i)
  89         {
  90                 float x = cos(i*M_PI/8)*0.005;
  91                 float y = sin(i*M_PI/8)*0.005;
  92                 bld.vertex(x, y, 0);
  93                 bld.vertex(x, y, 0.01);
  94         }
  95         bld.end();
  96
  97         if(start_pinned)
  98         {
  99                 float c = cos(start.rotation);
 100                 float s = sin(start.rotation);
 101                 bld.begin(GL::QUAD_STRIP);
 102                 bld.vertex(0, 0, 0);
 103                 bld.vertex(0, 0, 0.01);
 104                 bld.vertex(c*par_dist, s*par_dist, 0);
 105                 bld.vertex(c*par_dist, s*par_dist, 0.01);
 106                 bld.vertex(ground_pointer.x-start.position.x, ground_pointer.y-start.position.y, 0);
 107                 bld.vertex(ground_pointer.x-start.position.x, ground_pointer.y-start.position.y, 0.01);
 108                 bld.vertex(0, 0, 0);
 109                 bld.vertex(0, 0, 0.01);
 110                 bld.end();
 111         }
 112 }
 113
 114 void Measure::snap_to_tracks(Snap &sn)
 115 {
 116         const set<Track *> &ltracks = designer.get_layout().get_all<Track>();
 117         for(set<Track *>::const_iterator i=ltracks.begin(); i!=ltracks.end(); ++i)
 118                 if((*i)->snap(sn, 0.01, SNAP_NODE))
 119                         return;
 120 }