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Bitshifting streams

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This commit is contained in:
Daniel Mills 2020-10-26 22:33:07 -04:00
parent 695cf24861
commit 59eda04949
4 changed files with 131 additions and 0 deletions
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42
src/main/java/com/volmit/iris/gen/v2/scaffold/layer/ProceduralStream.java
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@ -12,6 +12,8 @@ import com.volmit.iris.gen.v2.scaffold.stream.CachedConversionStream;
import com.volmit.iris.gen.v2.scaffold.stream.CachedStream2D;
import com.volmit.iris.gen.v2.scaffold.stream.ClampedStream;
import com.volmit.iris.gen.v2.scaffold.stream.ConversionStream;
import com.volmit.iris.gen.v2.scaffold.stream.CoordinateBitShiftLeftStream;
import com.volmit.iris.gen.v2.scaffold.stream.CoordinateBitShiftRightStream;
import com.volmit.iris.gen.v2.scaffold.stream.DividingStream;
import com.volmit.iris.gen.v2.scaffold.stream.FittedStream;
import com.volmit.iris.gen.v2.scaffold.stream.ForceDoubleStream;
@ -82,6 +84,46 @@ public interface ProceduralStream<T> extends ProceduralLayer, Interpolated<T>
return new AddingStream<>(this, a);
}
default ProceduralStream<T> blockToChunkCoords()
{
return bitShiftCoordsRight(4);
}
default ProceduralStream<T> chunkToRegionCoords()
{
return bitShiftCoordsRight(5);
}
default ProceduralStream<T> blockToRegionCoords()
{
return blockToChunkCoords().chunkToRegionCoords();
}
default ProceduralStream<T> regionToBlockCoords()
{
return regionToChunkCoords().chunkToBlockCoords();
}
default ProceduralStream<T> regionToChunkCoords()
{
return bitShiftCoordsLeft(5);
}
default ProceduralStream<T> chunkToBlockCoords()
{
return bitShiftCoordsLeft(4);
}
default ProceduralStream<T> bitShiftCoordsRight(int a)
{
return new CoordinateBitShiftRightStream<>(this, a);
}
default ProceduralStream<T> bitShiftCoordsLeft(int a)
{
return new CoordinateBitShiftLeftStream<>(this, a);
}
default ProceduralStream<T> max(Function3<Double, Double, Double, Double> a)
{
return new MaxingStream<>(this, a);

42
src/main/java/com/volmit/iris/gen/v2/scaffold/stream/CoordinateBitShiftLeftStream.java Normal file
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@ -0,0 +1,42 @@
package com.volmit.iris.gen.v2.scaffold.stream;
import com.volmit.iris.gen.v2.scaffold.layer.BasicLayer;
import com.volmit.iris.gen.v2.scaffold.layer.ProceduralStream;
public class CoordinateBitShiftLeftStream<T> extends BasicLayer implements ProceduralStream<T>
{
private final ProceduralStream<T> stream;
private final int amount;
public CoordinateBitShiftLeftStream(ProceduralStream<T> stream, int amount)
{
super();
this.stream = stream;
this.amount = amount;
}
@Override
public double toDouble(T t)
{
return stream.toDouble(t);
}
@Override
public T fromDouble(double d)
{
return stream.fromDouble(d);
}
@Override
public T get(double x, double z)
{
return stream.get((int) x << amount, (int) z << amount);
}
@Override
public T get(double x, double y, double z)
{
return stream.get((int) x << amount, (int) y << amount, (int) z << amount);
}
}

42
src/main/java/com/volmit/iris/gen/v2/scaffold/stream/CoordinateBitShiftRightStream.java Normal file
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@ -0,0 +1,42 @@
package com.volmit.iris.gen.v2.scaffold.stream;
import com.volmit.iris.gen.v2.scaffold.layer.BasicLayer;
import com.volmit.iris.gen.v2.scaffold.layer.ProceduralStream;
public class CoordinateBitShiftRightStream<T> extends BasicLayer implements ProceduralStream<T>
{
private final ProceduralStream<T> stream;
private final int amount;
public CoordinateBitShiftRightStream(ProceduralStream<T> stream, int amount)
{
super();
this.stream = stream;
this.amount = amount;
}
@Override
public double toDouble(T t)
{
return stream.toDouble(t);
}
@Override
public T fromDouble(double d)
{
return stream.fromDouble(d);
}
@Override
public T get(double x, double z)
{
return stream.get((int) x >> amount, (int) z >> amount);
}
@Override
public T get(double x, double y, double z)
{
return stream.get((int) x >> amount, (int) y >> amount, (int) z >> amount);
}
}

5
src/main/java/com/volmit/iris/gen/v2/scaffold/stream/Interpolated.java
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@ -2,10 +2,15 @@ package com.volmit.iris.gen.v2.scaffold.stream;
import java.util.function.Function;
import org.bukkit.block.data.BlockData;
import com.volmit.iris.gen.v2.scaffold.layer.ProceduralStream;
import com.volmit.iris.util.RNG;
public interface Interpolated<T>
{
public static final Interpolated<BlockData> BLOCK_DATA = of((t) -> 0D, (t) -> null);
public static final Interpolated<RNG> RNG = of((t) -> 0D, (t) -> null);
public static final Interpolated<Double> DOUBLE = of((t) -> t, (t) -> t);
public static final Interpolated<Integer> INT = of((t) -> Double.valueOf(t), (t) -> t.intValue());
public static final Interpolated<Long> LONG = of((t) -> Double.valueOf(t), (t) -> t.longValue());