source/core/clipping.cpp

   1 #include <msp/core/algorithm.h>
   2 #include "clipping.h"
   3 #include "clipplane.h"
   4 #include "deviceinfo.h"
   5 #include "error.h"
   6
   7 using namespace std;
   8
   9 namespace Msp {
  10 namespace GL {
  11
  12 unsigned Clipping::get_n_attach_points()
  13 {
  14         return Limits::get_global().max_clip_planes;
  15 }
  16
  17 void Clipping::attach(const ClipPlane &p)
  18 {
  19         if(find_member(planes, &p, &AttachedPlane::plane)!=planes.end())
  20                 return;
  21         if(planes.size()>=Limits::get_global().max_clip_planes)
  22                 throw invalid_operation("Clipping::attach");
  23
  24         planes.push_back(&p);
  25 }
  26
  27 void Clipping::detach(const ClipPlane &p)
  28 {
  29         vector<AttachedPlane>::iterator i = find_member(planes, &p, &AttachedPlane::plane);
  30         if(i!=planes.end())
  31                 planes.erase(i);
  32 }
  33
  34 void Clipping::detach(unsigned i)
  35 {
  36         if(i<planes.size())
  37                 detach(*planes[i].plane);
  38 }
  39
  40 const ProgramData &Clipping::get_shader_data() const
  41 {
  42         for(unsigned i=0; i<planes.size(); ++i)
  43                 if(planes[i].plane->get_generation()!=planes[i].generation)
  44                 {
  45                         planes[i].plane->update_shader_data(shdata, i);
  46                         planes[i].generation = planes[i].plane->get_generation();
  47                 }
  48
  49         return shdata;
  50 }
  51
  52 } // namespace GL
  53 } // namespace Msp