1 /**

     2  * test/demos/pmc/vector.cc

     3  * Copyright (C) 2008 Markus Broeker

     4  */

     5 

     6 #include <cmath>

     7 #include <vector.h>

     8 

     9 #include <cstdio>

    10 

    11 Vector::Vector (int xx, int yy)

    12 {

    13     name = "Vector";

    14     x = xx;

    15     y = yy;

    16     mode = RAD;

    17 

    18 #ifdef DEBUG

    19     fprintf (stderr, "New Vector: (%.3d, %.3d)\n", x, y);

    20 #endif

    21 }

    22 

    23 Vector::~Vector ()

    24 {

    25 #ifdef DEBUG

    26     fprintf (stderr, "Bye, bye Vector: (%.3d, %.3d)\n", x, y);

    27 #endif

    28 }

    29 

    30 int Vector::X ()

    31 {

    32     return x;

    33 }

    34 

    35 int Vector::Y ()

    36 {

    37     return y;

    38 }

    39 

    40 Vector Vector::operator+ (Vector a)

    41 {

    42     return Vector (x + a.X (), y + a.Y ());

    43 }

    44 

    45 Vector Vector::operator- (Vector a)

    46 {

    47     return Vector (x - a.X (), y - a.Y ());

    48 }

    49 

    50 double Vector::abs ()

    51 {

    52     return (std::sqrt (x * x + y * y));

    53 }

    54 

    55 void Vector::vector ()

    56 {

    57     fprintf (stderr, "(%.3d, %.3d)", x, y);

    58 }

    59 

    60 double Vector::angle (Vector v)

    61 {

    62     if (mode == DEG)

    63         return ((180.0 / M_PI) * std::acos ((v.X () * X () + v.Y () * Y ()) / (abs () * v.abs ())));

    64 

    65     return (std::acos ((v.X () * X () + v.Y () * Y ()) / (abs () * v.abs ())));

    66 }

    67 

    68 void Vector::setMode (Mode m)

    69 {

    70     mode = m;

    71 }