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Reformated MetaRotater

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Tycho 2014-03-02 12:29:20 -08:00
parent 8990410f18
commit 6536233f4d
1 changed files with 30 additions and 19 deletions
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49
src/Blocks/MetaRotater.h
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@ -1,7 +1,18 @@
// MetaRotater.h
// Provides a mixin for rotations and reflections
#pragma once #pragma once
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched = false> /*
Provides a mixin for rotations and reflections following the standard pattern of apply mask then use case.
Usage:
Inherit from this class providing your base class as Base, the BitMask for the direction bits in bitmask and the masked value for the directions in North, East, South, West. There is also an aptional parameter AssertIfNotMatched. Set this if it is invalid for a block to exist in any other state.
*/
template<class Base, NIBBLETYPE BitMask, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched = false>
class cMetaRotater : public Base class cMetaRotater : public Base
{ {
public: public:
@ -19,18 +30,18 @@ public:
}; };
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched> template<class Base, NIBBLETYPE BitMask, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMatched>::MetaRotateCW(NIBBLETYPE a_Meta) NIBBLETYPE cMetaRotater<Base, BitMask, North, East, South, West, AssertIfNotMatched>::MetaRotateCW(NIBBLETYPE a_Meta)
{ {
NIBBLETYPE OtherMeta = a_Meta & (~BitFilter); NIBBLETYPE OtherMeta = a_Meta & (~BitMask);
switch (a_Meta & BitFilter) switch (a_Meta & BitMask)
{ {
case South: return West | OtherMeta; case South: return West | OtherMeta;
case West: return North | OtherMeta; case West: return North | OtherMeta;
case North: return East | OtherMeta; case North: return East | OtherMeta;
case East: return South | OtherMeta; case East: return South | OtherMeta;
} }
if(AssertIfNotMatched) if (AssertIfNotMatched)
{ {
ASSERT(!"Invalid Meta value"); ASSERT(!"Invalid Meta value");
return a_Meta; return a_Meta;
@ -38,18 +49,18 @@ NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMa
} }
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched> template<class Base, NIBBLETYPE BitMask, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMatched>::MetaRotateCCW(NIBBLETYPE a_Meta) NIBBLETYPE cMetaRotater<Base, BitMask, North, East, South, West, AssertIfNotMatched>::MetaRotateCCW(NIBBLETYPE a_Meta)
{ {
NIBBLETYPE OtherMeta = a_Meta & (~BitFilter); NIBBLETYPE OtherMeta = a_Meta & (~BitMask);
switch (a_Meta & BitFilter) switch (a_Meta & BitMask)
{ {
case South: return East | OtherMeta; case South: return East | OtherMeta;
case East: return North | OtherMeta; case East: return North | OtherMeta;
case North: return West | OtherMeta; case North: return West | OtherMeta;
case West: return South | OtherMeta; case West: return South | OtherMeta;
} }
if(AssertIfNotMatched) if (AssertIfNotMatched)
{ {
ASSERT(!"Invalid Meta value"); ASSERT(!"Invalid Meta value");
return a_Meta; return a_Meta;
@ -58,11 +69,11 @@ NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMa
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched> template<class Base, NIBBLETYPE BitMask, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMatched>::MetaMirrorXY(NIBBLETYPE a_Meta) NIBBLETYPE cMetaRotater<Base, BitMask, North, East, South, West, AssertIfNotMatched>::MetaMirrorXY(NIBBLETYPE a_Meta)
{ {
NIBBLETYPE OtherMeta = a_Meta & (~BitFilter); NIBBLETYPE OtherMeta = a_Meta & (~BitMask);
switch (a_Meta & BitFilter) switch (a_Meta & BitMask)
{ {
case South: return North | OtherMeta; case South: return North | OtherMeta;
case North: return South | OtherMeta; case North: return South | OtherMeta;
@ -74,11 +85,11 @@ NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMa
template<class Base, NIBBLETYPE BitFilter, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched> template<class Base, NIBBLETYPE BitMask, NIBBLETYPE North, NIBBLETYPE East, NIBBLETYPE South, NIBBLETYPE West, bool AssertIfNotMatched>
NIBBLETYPE cMetaRotater<Base, BitFilter, North, East, South, West, AssertIfNotMatched>::MetaMirrorYZ(NIBBLETYPE a_Meta) NIBBLETYPE cMetaRotater<Base, BitMask, North, East, South, West, AssertIfNotMatched>::MetaMirrorYZ(NIBBLETYPE a_Meta)
{ {
NIBBLETYPE OtherMeta = a_Meta & (~BitFilter); NIBBLETYPE OtherMeta = a_Meta & (~BitMask);
switch (a_Meta & BitFilter) switch (a_Meta & BitMask)
{ {
case West: return East | OtherMeta; case West: return East | OtherMeta;
case East: return West | OtherMeta; case East: return West | OtherMeta;