src/geometry/AABB.cpp

   1 /*
   2  * AABB.cpp
   3  *
   4  *  Created on: Apr 20, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "AABB.h"
   9
  10 #include "Circle.h"
  11 #include "FakeLens.h"
  12
  13 namespace geometry {
  14
  15 bool AABB::Overlaps(const Shape &other, Vector &normal) const {
  16         if (other.Overlaps(*this, normal)) {
  17                 normal *= -1;
  18                 return true;
  19         } else {
  20                 return false;
  21         }
  22 }
  23
  24 bool AABB::Overlaps(const AABB &other, Vector &normal) const {
  25         if (Bottom() <= other.Top()) return false;
  26         if (other.Bottom() <= Top()) return false;
  27         if (Right() <= other.Left()) return false;
  28         if (other.Right() <= Left()) return false;
  29
  30         if (HorizontalOverlap(other)) {
  31                 if (Top() < other.Top()) {
  32                         normal = Vector(0, -1);
  33                 } else {
  34                         normal = Vector(0, 1);
  35                 }
  36         } else {
  37                 if (Left() < other.Left()) {
  38                         normal = Vector(-1, 0);
  39                 } else {
  40                         normal = Vector(1, 0);
  41                 }
  42         }
  43
  44         return true;
  45 }
  46
  47 bool AABB::Overlaps(const Circle &other, Vector &normal) const {
  48         if (other.Overlaps(*this, normal)) {
  49                 normal *= -1;
  50                 return true;
  51         } else {
  52                 return false;
  53         }
  54 }
  55
  56 bool AABB::Overlaps(const FakeLens &other, Vector &normal) const {
  57         if (other.Overlaps(*this, normal)) {
  58                 normal *= -1;
  59                 return true;
  60         } else {
  61                 return false;
  62         }
  63 }
  64
  65 std::ostream &AABB::Write(std::ostream &out) const {
  66         return out << "AABB(" << Width() << 'x' << Height() << '+' << X() << '+' << Y() << ')';
  67 }
  68
  69 } /* namespace geometry */