9 files changed, 91 insertions, 124 deletions

diff --git a/source/Generating/BioGen.cpp b/source/Generating/BioGen.cpp
index 1a73fe109..13e7c88ae 100644
--- a/source/Generating/BioGen.cpp
+++ b/source/Generating/BioGen.cpp
@@ -6,6 +6,7 @@
 #include "Globals.h"
 #include "BioGen.h"
 #include "../../iniFile/iniFile.h"
+#include "../LinearUpscale.h"
 
 
 
@@ -339,8 +340,8 @@ void cBioGenDistortedVoronoi::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::B
 		Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z]);
 	}
 	
-	IntArrayLinearInterpolate2D(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
-	IntArrayLinearInterpolate2D(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+	ArrayLinearUpscale2D(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+	ArrayLinearUpscale2D(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
 	
 	for (int z = 0; z < cChunkDef::Width; z++)
 	{
@@ -446,8 +447,8 @@ void cBioGenMultiStepMap::DecideOceanLandMushroom(int a_ChunkX, int a_ChunkZ, cC
 	{
 		Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z], DistortSize);
 	}
-	IntArrayLinearInterpolate2D(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
-	IntArrayLinearInterpolate2D(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+	ArrayLinearUpscale2D(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+	ArrayLinearUpscale2D(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
 	
 	// Prepare a 9x9 area of neighboring cell seeds
 	// (assuming that 7x7 cell area is larger than a chunk being generated)
@@ -620,8 +621,8 @@ void cBioGenMultiStepMap::BuildTemperatureHumidityMaps(int a_ChunkX, int a_Chunk
 			HumidityMap[x + 17 * z] = NoiseH;
 		}  // for x
 	}  // for z
-	ArrayLinearInterpolate2D(TemperatureMap, 17, 17, 8, 8);
-	ArrayLinearInterpolate2D(HumidityMap,    17, 17, 8, 8);
+	ArrayLinearUpscale2D(TemperatureMap, 17, 17, 8, 8);
+	ArrayLinearUpscale2D(HumidityMap,    17, 17, 8, 8);
 	
 	// Re-map into integral values in [0 .. 255] range:
 	for (int idx = 0; idx < ARRAYCOUNT(a_TemperatureMap); idx++)
diff --git a/source/Generating/CompoGen.cpp b/source/Generating/CompoGen.cpp
index 1d2affc94..c8f8ac069 100644
--- a/source/Generating/CompoGen.cpp
+++ b/source/Generating/CompoGen.cpp
@@ -10,6 +10,7 @@
 #include "Globals.h"
 #include "CompoGen.h"
 #include "../BlockID.h"
+#include "../LinearUpscale.h"
 
 
 
@@ -441,7 +442,7 @@ void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 			m_Noise2.IntNoise3DInt(BaseX + INTERPOL_X * x, 0, BaseZ + INTERPOL_Z * z) /
 			256;
 	}  // for x, z - FloorLo[]
-	IntArrayLinearInterpolate2D(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
+	ArrayLinearUpscale2D(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
 	
 	// Interpolate segments:
 	for (int Segment = 0; Segment < MaxHeight; Segment += SEGMENT_HEIGHT)
@@ -454,7 +455,7 @@ void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 				m_Noise2.IntNoise3DInt(BaseX + INTERPOL_Z * x, Segment + SEGMENT_HEIGHT, BaseZ + INTERPOL_Z * z) /
 				256;
 		}  // for x, z - FloorLo[]
-		IntArrayLinearInterpolate2D(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
+		ArrayLinearUpscale2D(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
 		
 		// Interpolate between FloorLo and FloorHi:
 		for (int z = 0; z < 16; z++) for (int x = 0; x < 16; x++)
diff --git a/source/Generating/DistortedHeightmap.cpp b/source/Generating/DistortedHeightmap.cpp
index 2ffaab089..d44ef60e5 100644
--- a/source/Generating/DistortedHeightmap.cpp
+++ b/source/Generating/DistortedHeightmap.cpp
@@ -8,6 +8,7 @@
 #include "DistortedHeightmap.h"

 #include "../OSSupport/File.h"

 #include "../../iniFile/iniFile.h"

+#include "../LinearUpscale.h"

 

 

 

@@ -157,7 +158,7 @@ void cDistortedHeightmap::GenerateHeightArray(void)
 				CurFloor[idx + x * INTERPOL_X] = (NOISE_DATATYPE)GetHeightmapAt(DistX, DistZ) + (NOISE_DATATYPE)0.5;

 			}  // for x

 		}  // for z

-		ArrayLinearInterpolate2D(CurFloor, 17, 17, INTERPOL_X, INTERPOL_Z);

+		ArrayLinearUpscale2D(CurFloor, 17, 17, INTERPOL_X, INTERPOL_Z);

 	}  // for y

 	

 	// Finish the 3D linear interpolation by interpolating between each XZ-floors on the Y axis

@@ -344,8 +345,8 @@ void cDistortedHeightmap::UpdateDistortAmps(void)
 			GetDistortAmpsAt(Biomes, x, z, m_DistortAmpX[x + 17 * z], m_DistortAmpZ[x + 17 * z]);

 		}

 	}

-	ArrayLinearInterpolate2D(m_DistortAmpX, 17, 17, STEPX, STEPZ);

-	ArrayLinearInterpolate2D(m_DistortAmpZ, 17, 17, STEPX, STEPZ);

+	ArrayLinearUpscale2D(m_DistortAmpX, 17, 17, STEPX, STEPZ);

+	ArrayLinearUpscale2D(m_DistortAmpZ, 17, 17, STEPX, STEPZ);

 }	

 

 

diff --git a/source/Generating/HeiGen.cpp b/source/Generating/HeiGen.cpp
index 99fe5bd32..055ef87e2 100644
--- a/source/Generating/HeiGen.cpp
+++ b/source/Generating/HeiGen.cpp
@@ -5,6 +5,7 @@
 
 #include "Globals.h"
 #include "HeiGen.h"
+#include "../LinearUpscale.h"
 
 
 
@@ -265,7 +266,7 @@ void cHeiGenBiomal::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMa
 			Height[x + 17 * z] = GetHeightAt(x, z, a_ChunkX, a_ChunkZ, Biomes);
 		}
 	}
-	ArrayLinearInterpolate2D(Height, 17, 17, STEPX, STEPZ);
+	ArrayLinearUpscale2D(Height, 17, 17, STEPX, STEPZ);
 	
 	// Copy into the heightmap
 	for (int z = 0; z < cChunkDef::Width; z++)
diff --git a/source/Generating/Noise3DGenerator.cpp b/source/Generating/Noise3DGenerator.cpp
index e406127ed..cebb982fd 100644
--- a/source/Generating/Noise3DGenerator.cpp
+++ b/source/Generating/Noise3DGenerator.cpp
@@ -8,6 +8,7 @@
 #include "../OSSupport/File.h"

 #include "../../iniFile/iniFile.h"

 #include "../LinearInterpolation.h"

+#include "../LinearUpscale.h"

 

 

 

@@ -439,7 +440,7 @@ void cNoise3DComposable::GenerateNoiseArrayIfNeeded(int a_ChunkX, int a_ChunkZ)
 			}

 		}

 		// Linear-interpolate this XZ floor:

-		ArrayLinearInterpolate2D(CurFloor, 17, 17, INTERPOL_X, INTERPOL_Z);

+		ArrayLinearUpscale2D(CurFloor, 17, 17, INTERPOL_X, INTERPOL_Z);

 	}

 	

 	// Finish the 3D linear interpolation by interpolating between each XZ-floors on the Y axis

diff --git a/source/Generating/StructGen.cpp b/source/Generating/StructGen.cpp
index 044e789b5..e5ac03b49 100644
--- a/source/Generating/StructGen.cpp
+++ b/source/Generating/StructGen.cpp
@@ -6,6 +6,7 @@
 #include "../BlockID.h"
 #include "Trees.h"
 #include "../BlockArea.h"
+#include "../LinearUpscale.h"
 
 
 
@@ -558,7 +559,7 @@ void cStructGenDirectOverhangs::GenStructures(cChunkDesc & a_ChunkDesc)
 			m_Noise2.IntNoise3DInt(BaseX + INTERPOL_X * x, BaseY, BaseZ + INTERPOL_Z * z) /
 			256;
 	}  // for x, z - FloorLo[]
-	IntArrayLinearInterpolate2D(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
+	ArrayLinearUpscale2D(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
 	
 	// Interpolate segments:
 	for (int Segment = BaseY; Segment < MaxHeight; Segment += SEGMENT_HEIGHT)
@@ -571,7 +572,7 @@ void cStructGenDirectOverhangs::GenStructures(cChunkDesc & a_ChunkDesc)
 				m_Noise2.IntNoise3DInt(BaseX + INTERPOL_Z * x, Segment + SEGMENT_HEIGHT, BaseZ + INTERPOL_Z * z) /
 				256;
 		}  // for x, z - FloorLo[]
-		IntArrayLinearInterpolate2D(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
+		ArrayLinearUpscale2D(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
 		
 		// Interpolate between FloorLo and FloorHi:
 		for (int z = 0; z < 16; z++) for (int x = 0; x < 16; x++)
diff --git a/source/LinearUpscale.h b/source/LinearUpscale.h
new file mode 100644
index 000000000..c20e3d3bb
--- /dev/null
+++ b/source/LinearUpscale.h
@@ -0,0 +1,70 @@
+

+// LinearUpscale.h

+

+// Declares the functions for linearly upscaling arrays

+

+/*

+Upscaling means that the array is divided into same-size "cells", and each cell is

+linearly interpolated between its corners. The array's dimensions are therefore

+1 + CellSize * NumCells, for each direction.

+

+Upscaling is more efficient than linear interpolation, because the cell sizes are integral

+and therefore the cells' boundaries are on the array points.

+

+However, upscaling usually requires generating the "1 +" in each direction.

+

+Upscaling is implemented in templates, so that it's compatible with multiple datatypes.

+Therefore, there is no cpp file.

+*/

+

+

+

+

+/// Linearly interpolates values in the array between the equidistant anchor points; universal data type

+template<typename TYPE> void ArrayLinearUpscale2D(

+	TYPE * a_Array, 

+	int a_SizeX, int a_SizeY,  // Dimensions of the array

+	int a_AnchorStepX, int a_AnchorStepY  // Distances between the anchor points in each direction

+)

+{

+	// First interpolate columns where the anchor points are:

+	int LastYCell = a_SizeY - a_AnchorStepY;

+	for (int y = 0; y < LastYCell; y += a_AnchorStepY)

+	{

+		int Idx = a_SizeX * y;

+		for (int x = 0; x < a_SizeX; x += a_AnchorStepX)

+		{

+			TYPE StartValue = a_Array[Idx];

+			TYPE EndValue   = a_Array[Idx + a_SizeX * a_AnchorStepY];

+			TYPE Diff = EndValue - StartValue;

+			for (int CellY = 1; CellY < a_AnchorStepY; CellY++)

+			{

+				a_Array[Idx + a_SizeX * CellY] = StartValue + Diff * CellY / a_AnchorStepY;

+			}  // for CellY

+			Idx += a_AnchorStepX;

+		}  // for x

+	}  // for y

+	

+	// Now interpolate in rows, each row has values in the anchor columns

+	int LastXCell = a_SizeX - a_AnchorStepX;

+	for (int y = 0; y < a_SizeY; y++)

+	{

+		int Idx = a_SizeX * y;

+		for (int x = 0; x < LastXCell; x += a_AnchorStepX)

+		{

+			TYPE StartValue = a_Array[Idx];

+			TYPE EndValue   = a_Array[Idx + a_AnchorStepX];

+			TYPE Diff = EndValue - StartValue;

+			for (int CellX = 1; CellX < a_AnchorStepX; CellX++)

+			{

+				a_Array[Idx + CellX] = StartValue + CellX * Diff / a_AnchorStepX;

+			}  // for CellY

+			Idx += a_AnchorStepX;

+		}

+	}

+}

+

+

+

+

+

diff --git a/source/Noise.cpp b/source/Noise.cpp
index fb369c6a0..87b3bd4a5 100644
--- a/source/Noise.cpp
+++ b/source/Noise.cpp
@@ -18,56 +18,6 @@
 
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Globals:
-
-void IntArrayLinearInterpolate2D(
-	int * a_Array, 
-	int a_SizeX, int a_SizeY,  // Dimensions of the array
-	int a_AnchorStepX, int a_AnchorStepY  // Distances between the anchor points in each direction
-)
-{
-	// First interpolate columns where the anchor points are:
-	int LastYCell = a_SizeY - a_AnchorStepY;
-	for (int y = 0; y < LastYCell; y += a_AnchorStepY)
-	{
-		int Idx = a_SizeX * y;
-		for (int x = 0; x < a_SizeX; x += a_AnchorStepX)
-		{
-			int StartValue = a_Array[Idx];
-			int EndValue   = a_Array[Idx + a_SizeX * a_AnchorStepY];
-			int Diff = EndValue - StartValue;
-			for (int CellY = 1; CellY < a_AnchorStepY; CellY++)
-			{
-				a_Array[Idx + a_SizeX * CellY] = StartValue + CellY * Diff / a_AnchorStepY;
-			}  // for CellY
-			Idx += a_AnchorStepX;
-		}  // for x
-	}  // for y
-	
-	// Now interpolate in rows, each row has values in the anchor columns
-	int LastXCell = a_SizeX - a_AnchorStepX;
-	for (int y = 0; y < a_SizeY; y++)
-	{
-		int Idx = a_SizeX * y;
-		for (int x = 0; x < LastXCell; x += a_AnchorStepX)
-		{
-			int StartValue = a_Array[Idx];
-			int EndValue   = a_Array[Idx + a_AnchorStepX];
-			int Diff = EndValue - StartValue;
-			for (int CellX = 1; CellX < a_AnchorStepX; CellX++)
-			{
-				a_Array[Idx + CellX] = StartValue + CellX * Diff / a_AnchorStepX;
-			}  // for CellY
-			Idx += a_AnchorStepX;
-		}
-	}
-}
-
-
-
-
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cCubicCell2D:
 
 class cCubicCell2D
diff --git a/source/Noise.h b/source/Noise.h
index cc1c169fb..a38406937 100644
--- a/source/Noise.h
+++ b/source/Noise.h
@@ -61,65 +61,6 @@ private:
 
 
 
-/// Linearly interpolates values in the array between the anchor points
-extern void IntArrayLinearInterpolate2D(
-	int * a_Array, 
-	int a_SizeX, int a_SizeY,  // Dimensions of the array
-	int a_AnchorStepX, int a_AnchorStepY  // Distances between the anchor points in each direction
-);
-
-
-
-
-
-/// Linearly interpolates values in the array between the anchor points; universal data type
-template<typename TYPE> void ArrayLinearInterpolate2D(
-	TYPE * a_Array, 
-	int a_SizeX, int a_SizeY,  // Dimensions of the array
-	int a_AnchorStepX, int a_AnchorStepY  // Distances between the anchor points in each direction
-)
-{
-	// First interpolate columns where the anchor points are:
-	int LastYCell = a_SizeY - a_AnchorStepY;
-	for (int y = 0; y < LastYCell; y += a_AnchorStepY)
-	{
-		int Idx = a_SizeX * y;
-		for (int x = 0; x < a_SizeX; x += a_AnchorStepX)
-		{
-			TYPE StartValue = a_Array[Idx];
-			TYPE EndValue   = a_Array[Idx + a_SizeX * a_AnchorStepY];
-			TYPE Diff = EndValue - StartValue;
-			for (int CellY = 1; CellY < a_AnchorStepY; CellY++)
-			{
-				a_Array[Idx + a_SizeX * CellY] = StartValue + Diff * CellY / a_AnchorStepY;
-			}  // for CellY
-			Idx += a_AnchorStepX;
-		}  // for x
-	}  // for y
-	
-	// Now interpolate in rows, each row has values in the anchor columns
-	int LastXCell = a_SizeX - a_AnchorStepX;
-	for (int y = 0; y < a_SizeY; y++)
-	{
-		int Idx = a_SizeX * y;
-		for (int x = 0; x < LastXCell; x += a_AnchorStepX)
-		{
-			TYPE StartValue = a_Array[Idx];
-			TYPE EndValue   = a_Array[Idx + a_AnchorStepX];
-			TYPE Diff = EndValue - StartValue;
-			for (int CellX = 1; CellX < a_AnchorStepX; CellX++)
-			{
-				a_Array[Idx + CellX] = StartValue + CellX * Diff / a_AnchorStepX;
-			}  // for CellY
-			Idx += a_AnchorStepX;
-		}
-	}
-}
-
-
-
-
-
 class cCubicNoise
 {
 public: