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#pragma once
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West>
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>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West>::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;
}
ASSERT(!"Invalid Meta value");
return a_Meta;
}
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West>::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;
}
ASSERT(!"Invalid Meta value");
return a_Meta;
}
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West>::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>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West>::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;
}
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