git.mutantstargoat.com Git - summerhack/blob - src/events.cpp

   1 #include "3dengfx/3dengfx.hpp"
   2
   3 using namespace engfx_state;
   4
   5 static float zoom_factor = 1.0;
   6
   7 void key_handler(int key) {
   8         TargetCamera *cam = dynamic_cast<TargetCamera*>(const_cast<Camera*>(view_mat_camera));
   9
  10         switch(key) {
  11         case 'a':
  12                 cam->zoom(0.8);
  13                 zoom_factor *= 0.8;
  14                 break;
  15
  16         case 'z':
  17                 cam->zoom(1.2);
  18                 zoom_factor *= 1.2;
  19                 break;
  20
  21         case '`':
  22                 screen_capture();
  23                 break;
  24
  25         case 27:
  26                 exit(0);
  27
  28         default:
  29                 break;
  30         }
  31 }
  32
  33 static int prev_x = -1;
  34 static int prev_y = -1;
  35
  36 void motion_handler(int x, int y) {
  37         if(prev_x != -1) {
  38                 TargetCamera *cam = dynamic_cast<TargetCamera*>(const_cast<Camera*>(view_mat_camera));
  39                 float dx = (float)(x - prev_x) * 0.01;
  40                 float dy = (float)(y - prev_y) * 1.0;
  41
  42                 cam->rotate(Vector3(0, -dx, 0));
  43                 cam->translate(Vector3(0, -dy * zoom_factor, 0));
  44
  45                 prev_x = x;
  46                 prev_y = y;
  47         }
  48 }
  49
  50 void bn_handler(int bn, int pressed, int x, int y) {
  51         TargetCamera *cam = dynamic_cast<TargetCamera*>(const_cast<Camera*>(view_mat_camera));
  52
  53         switch(bn) {
  54         case fxwt::BN_RIGHT:
  55                 if(pressed) {
  56                         prev_x = x;
  57                         prev_y = y;
  58                 } else {
  59                         prev_x = prev_y = -1;
  60                 }
  61                 break;
  62
  63         case fxwt::BN_WHEELUP:
  64                 cam->zoom(0.9);
  65                 zoom_factor *= 0.9;
  66                 break;
  67
  68         case fxwt::BN_WHEELDOWN:
  69                 cam->zoom(1.1);
  70                 zoom_factor *= 1.1;
  71                 break;
  72
  73         default:
  74                 break;
  75         }
  76 }