hvirtual/cinelerra/panautos.C

   1 #include "panauto.h"
   2 #include "panautos.h"
   3 #include "transportque.inc"
   4
   5 PanAutos::PanAutos(EDL *edl, Track *track)
   6  : Autos(edl, track)
   7 {
   8 }
   9
  10 PanAutos::~PanAutos()
  11 {
  12 }
  13
  14
  15 Auto* PanAutos::new_auto()
  16 {
  17         return new PanAuto(edl, this);
  18 }
  19
  20 void PanAutos::get_handle(int &handle_x,
  21                 int &handle_y,
  22                 int64_t position,
  23                 int direction,
  24                 PanAuto* &previous,
  25                 PanAuto* &next)
  26 {
  27         previous = (PanAuto*)get_prev_auto(position, direction, (Auto*)previous);
  28         next = (PanAuto*)get_next_auto(position, direction, (Auto*)next);
  29
  30 // Constant
  31         if(previous->handle_x == next->handle_x &&
  32                 previous->handle_y == next->handle_y)
  33         {
  34                 handle_x = previous->handle_x;
  35                 handle_y = previous->handle_y;
  36                 return;
  37         }
  38
  39 // Interpolate
  40         int64_t total = labs(next->position - previous->position);
  41         double fraction;
  42         if(direction == PLAY_FORWARD)
  43         {
  44                 fraction = (double)(position - previous->position) / total;
  45         }
  46         else
  47         {
  48                 fraction = (double)(previous->position - position) / total;
  49         }
  50
  51         handle_x = (int)(previous->handle_x + (next->handle_x - previous->handle_x) * fraction);
  52         handle_y = (int)(previous->handle_y + (next->handle_y - previous->handle_y) * fraction);
  53 }
  54
  55 void PanAutos::dump()
  56 {
  57         printf("        PanAutos::dump %p\n", this);
  58                 printf("        Default: position %ld\n", default_auto->position);
  59                 ((PanAuto*)default_auto)->dump();
  60         for(Auto* current = first; current; current = NEXT)
  61         {
  62                 printf("        position %ld\n", current->position);
  63                 ((PanAuto*)current)->dump();
  64         }
  65 }