1/*---------------------------------------------------------------------------*
2  Project:  Horizon
3  File:     math_Vector2.ipp
4
5  Copyright (C)2009-2010 Nintendo Co., Ltd.  All rights reserved.
6
7  These coded instructions, statements, and computer programs contain
8  proprietary information of Nintendo of America Inc. and/or Nintendo
9  Company Ltd., and are protected by Federal copyright law.  They may
10  not be disclosed to third parties or copied or duplicated in any form,
11  in whole or in part, without the prior written consent of Nintendo.
12
13  $Revision: 17995 $
14 *---------------------------------------------------------------------------*/
15
16namespace nn {
17namespace math {
18
19/* ------------------------------------------------------------------------
20        VEC2
21   ------------------------------------------------------------------------ */
22
23/* Please see man pages for details
24
25
26*/
27
28/*
29
30
31
32
33
34 */
35NN_MATH_INLINE bool
36VEC2IsZero(const VEC2* p)
37{
38    return p->x == 0.f && p->y == 0.f;
39}
40
41/*
42
43
44
45
46
47
48
49 */
50NN_MATH_INLINE VEC2*
51VEC2Maximize(VEC2* pOut, const VEC2* p1, const VEC2* p2)
52{
53    pOut->x = (p1->x > p2->x) ? p1->x : p2->x;
54    pOut->y = (p1->y > p2->y) ? p1->y : p2->y;
55
56    return pOut;
57}
58
59
60/*
61
62
63
64
65
66
67
68 */
69NN_MATH_INLINE VEC2*
70VEC2Minimize(VEC2* pOut, const VEC2* p1, const VEC2* p2)
71{
72    pOut->x = (p1->x < p2->x) ? p1->x : p2->x;
73    pOut->y = (p1->y < p2->y) ? p1->y : p2->y;
74
75    return pOut;
76}
77
78
79/*
80
81
82
83
84
85
86 */
87NN_MATH_INLINE VEC2*
88VEC2Normalize(VEC2* pOut, const VEC2* p)
89{
90    (void)VEC2Scale(pOut, p, FrSqrt(p->x * p->x + p->y * p->y));
91
92    return pOut;
93}
94
95/*
96
97
98
99
100
101
102
103
104 */
105NN_MATH_INLINE VEC2*
106VEC2SafeNormalize(VEC2* pOut, const VEC2* p, const VEC2& alt)
107{
108    NN_NULL_ASSERT(pOut);
109    NN_NULL_ASSERT(p);
110
111    f32 mag = (p->x * p->x) + (p->y * p->y);
112
113    if (mag == 0)
114    {
115        *pOut = alt;
116
117        return pOut;
118    }
119
120    (void)VEC2Scale(pOut, p, FrSqrt(mag));
121
122    return pOut;
123}
124
125/*
126
127*/
128
129}  // namespace math
130}  // namespace nn
131