1  #include "Point.hpp"
 2  #include <iostream>
 3  
 4  // prototype for bsp
 5  bool bsp(Point const a, Point const b, Point const c, Point const point);
 6  
 7  int main() {
 8    std::cout << "==========================================" << std::endl;
 9    std::cout << "   Point-in-Triangle (BSP) Demo" << std::endl;
10    std::cout << "==========================================" << std::endl;
11    std::cout << std::endl;
12  
13    // Define the triangle
14    Point a(0.0f, 0.0f);
15    Point b(10.0f, 0.0f);
16    Point c(0.0f, 10.0f);
17  
18    std::cout << "Triangle vertices:" << std::endl;
19    std::cout << "  A: (" << a.getX().toFloat() << ", " << a.getY().toFloat()
20              << ")" << std::endl;
21    std::cout << "  B: (" << b.getX().toFloat() << ", " << b.getY().toFloat()
22              << ")" << std::endl;
23    std::cout << "  C: (" << c.getX().toFloat() << ", " << c.getY().toFloat()
24              << ")" << std::endl;
25    std::cout << std::endl;
26  
27    // Test points
28    Point p1(1.0f, 1.0f);   // inside
29    Point p2(5.0f, 0.0f);   // on edge
30    Point p3(0.0f, 0.0f);   // vertex
31    Point p4(10.0f, 10.0f); // outside
32  
33    // Test p1
34    std::cout << "Testing point P1: (" << p1.getX().toFloat() << ", "
35              << p1.getY().toFloat() << ") - should be INSIDE the triangle."
36              << std::endl;
37    bool result1 = bsp(a, b, c, p1);
38    std::cout << "  Result: "
39              << (result1 ? "YES, it's inside!" : "NO, it's not inside.")
40              << std::endl;
41    std::cout << std::endl;
42  
43    // Test p2
44    std::cout << "Testing point P2: (" << p2.getX().toFloat() << ", "
45              << p2.getY().toFloat() << ") - on the EDGE of the triangle."
46              << std::endl;
47    bool result2 = bsp(a, b, c, p2);
48    std::cout << "  Result: "
49              << (result2 ? "YES, it's inside!"
50                          : "NO, it's not inside (on edge).")
51              << std::endl;
52    std::cout << std::endl;
53  
54    // Test p3
55    std::cout << "Testing point P3: (" << p3.getX().toFloat() << ", "
56              << p3.getY().toFloat() << ") - at a VERTEX of the triangle."
57              << std::endl;
58    bool result3 = bsp(a, b, c, p3);
59    std::cout << "  Result: "
60              << (result3 ? "YES, it's inside!"
61                          : "NO, it's not inside (at vertex).")
62              << std::endl;
63    std::cout << std::endl;
64  
65    // Test p4
66    std::cout << "Testing point P4: (" << p4.getX().toFloat() << ", "
67              << p4.getY().toFloat() << ") - OUTSIDE the triangle." << std::endl;
68    bool result4 = bsp(a, b, c, p4);
69    std::cout << "  Result: "
70              << (result4 ? "YES, it's inside!" : "NO, it's not inside.")
71              << std::endl;
72    std::cout << std::endl;
73  
74    std::cout << "==========================================" << std::endl;
75    std::cout << "   Demo complete! BSP function tested." << std::endl;
76    std::cout << "==========================================" << std::endl;
77  
78    return 0;
79  }