src/graphics/Camera.cpp

   1 #include "Camera.h"
   2
   3 #include <cassert>
   4
   5 using math::Fixed;
   6 using math::Vector;
   7
   8 namespace graphics {
   9
  10 Camera::Camera(int width, int height, const Vector<Fixed<8> > *target)
  11 : target(target), halfWidth(width / 2), halfHeight(height / 2) {
  12
  13 }
  14
  15
  16 void Camera::SetTarget(const Vector<Fixed<8> > *t) {
  17         target = t;
  18 }
  19
  20
  21 Vector<int> Camera::CalculateOffset() const {
  22         if (target) {
  23                 return Vector<int>(
  24                                 (target->X().Int() - halfWidth) * -1,
  25                                 (target->Y().Int() - halfHeight) * -1);
  26         } else {
  27                 return Vector<int>();
  28         }
  29 }
  30
  31 }