1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
#pragma once
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched = false>
class cMetaRotater : public Base
{
public:
cMetaRotater(BLOCKTYPE a_BlockType) :
Base(a_BlockType)
{}
virtual ~cMetaRotater() {}
virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override;
virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) override;
virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) override;
virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) override;
};
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMatched>::MetaRotateCW(NIBBLETYPE a_Meta)
{
NIBBLETYPE OtherMeta = a_Meta & (~BitFilter);
switch (a_Meta & BitFilter)
{
case South: return West | OtherMeta;
case West: return North | OtherMeta;
case North: return East | OtherMeta;
case East: return South | OtherMeta;
}
if(AssertIfNotMatched)
{
ASSERT(!"Invalid Meta value");
return a_Meta;
}
}
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMatched>::MetaRotateCCW(NIBBLETYPE a_Meta)
{
NIBBLETYPE OtherMeta = a_Meta & (~BitFilter);
switch (a_Meta & BitFilter)
{
case South: return East | OtherMeta;
case East: return North | OtherMeta;
case North: return West | OtherMeta;
case West: return South | OtherMeta;
}
if(AssertIfNotMatched)
{
ASSERT(!"Invalid Meta value");
return a_Meta;
}
}
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMatched>::MetaMirrorXY(NIBBLETYPE a_Meta)
{
NIBBLETYPE OtherMeta = a_Meta & (~BitFilter);
switch (a_Meta & BitFilter)
{
case South: return North | OtherMeta;
case North: return South | OtherMeta;
}
// Not Facing North or South; No change.
return a_Meta;
}
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMatched>::MetaMirrorYZ(NIBBLETYPE a_Meta)
{
NIBBLETYPE OtherMeta = a_Meta & (~BitFilter);
switch (a_Meta & BitFilter)
{
case West: return East | OtherMeta;
case East: return West | OtherMeta;
}
// Not Facing East or West; No change.
return a_Meta;
}
|
