source/designer/selectionwrap.cpp

   1 #include <msp/gl/matrix.h>
   2 #include <msp/gl/meshbuilder.h>
   3 #include <msp/gl/renderer.h>
   4 #include "selection.h"
   5 #include "selectionwrap.h"
   6
   7 using namespace std;
   8 using namespace Msp;
   9 using namespace R2C2;
  10
  11 SelectionWrap::SelectionWrap(Selection &s):
  12         selection(s)
  13 {
  14         selection.signal_changed.connect(sigc::mem_fun(this, &SelectionWrap::selection_changed));
  15 }
  16
  17 SelectionWrap::~SelectionWrap()
  18 {
  19         for(map<const ObjectType *, GL::Mesh *>::iterator i=meshes.begin(); i!=meshes.end(); ++i)
  20                 delete i->second;
  21 }
  22
  23 void SelectionWrap::render(GL::Renderer &renderer, const GL::Tag &) const
  24 {
  25         for(list<Wrap>::const_iterator i=wraps.begin(); i!=wraps.end(); ++i)
  26         {
  27                 GL::MatrixStack::Push push(renderer.matrix_stack());
  28                 const Vector &pos = i->object->get_position();
  29                 renderer.matrix_stack() *= GL::Matrix::translation(pos);
  30                 renderer.matrix_stack() *= GL::Matrix::rotation(i->object->get_rotation(), 0, 0, 1);
  31                 i->mesh->draw(renderer);
  32         }
  33 }
  34
  35 void SelectionWrap::selection_changed()
  36 {
  37         wraps.clear();
  38         const set<Object *> &objects = selection.get_objects();
  39         for(set<Object *>::iterator i=objects.begin(); i!=objects.end(); ++i)
  40         {
  41                 Wrap wrap;
  42                 wrap.object = *i;
  43                 wrap.mesh = &get_mesh((*i)->get_type());
  44                 wraps.push_back(wrap);
  45         }
  46 }
  47
  48 GL::Mesh &SelectionWrap::get_mesh(const ObjectType &type)
  49 {
  50         map<const ObjectType *, GL::Mesh *>::iterator j = meshes.find(&type);
  51         if(j!=meshes.end())
  52                 return *j->second;
  53
  54         GL::Mesh *mesh = new GL::Mesh((GL::COLOR4_UBYTE, GL::VERTEX2));
  55         GL::MeshBuilder bld(*mesh);
  56         bld.color(0.0f, 1.0f, 0.0f, 1.0f);
  57
  58         const Shape *shape = type.get_shape();
  59         if(!shape)
  60                 throw logic_error("No shape");
  61
  62         Geometry::BoundingBox<float, 3> bbox = shape->get_axis_aligned_bounding_box();
  63         const Vector &min_pt = bbox.get_minimum_point();
  64         const Vector &max_pt = bbox.get_maximum_point();
  65
  66         bld.begin(GL::LINE_LOOP);
  67         bld.vertex(min_pt.x-0.005, min_pt.y-0.005);
  68         bld.vertex(max_pt.x+0.005, min_pt.y-0.005);
  69         bld.vertex(max_pt.x+0.005, max_pt.y+0.005);
  70         bld.vertex(min_pt.x-0.005, max_pt.y+0.005);
  71         bld.end();
  72
  73         meshes[&type] = mesh;
  74
  75         return *mesh;
  76 }