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1 files changed, 12 insertions, 0 deletions
| -rw-r--r-- | Sem. 12/Example_polymorphism/Triangle.cpp | 12 |
diff --git a/Sem. 12/Example_polymorphism/Triangle.cpp b/Sem. 12/Example_polymorphism/Triangle.cpp index 7de831c..4463ccc 100644 --- a/Sem. 12/Example_polymorphism/Triangle.cpp +++ b/Sem. 12/Example_polymorphism/Triangle.cpp @@ -1,4 +1,5 @@ #include "Triangle.h" +#include <limits> Triangle::Triangle(int x1, int y1, int x2, int y2, int x3, int y3) : Shape(3) { @@ -21,4 +22,15 @@ double Triangle::getPer() const Shape::point p3 = getPointAtIndex(2); return p1.getDist(p2) + p2.getDist(p3) + p3.getDist(p1); +} + +bool Triangle::isPointIn(int x, int y) const +{ + Shape::point p(x, y); + Triangle t1(getPointAtIndex(0).x, getPointAtIndex(0).y, getPointAtIndex(1).x, getPointAtIndex(1).y, p.x, p.y); + Triangle t2(getPointAtIndex(2).x, getPointAtIndex(2).y, getPointAtIndex(1).x, getPointAtIndex(1).y, p.x, p.y); + Triangle t3(getPointAtIndex(2).x, getPointAtIndex(2).y, getPointAtIndex(0).x, getPointAtIndex(0).y, p.x, p.y); + + return abs(t1.getArea() + t2.getArea() + t3.getArea() - getArea()) <= std::numeric_limits<double>::epsilon(); + }
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