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Renamed linear interpolation from Noise.h to a more proper LinearUpscale and moved it to a separate file.

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git-svn-id: http://mc-server.googlecode.com/svn/trunk@1475 0a769ca7-a7f5-676a-18bf-c427514a06d6
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madmaxoft@gmail.com
2013-05-12 17:55:49 +00:00
parent d851c47acd
commit 1927095d25
10 changed files with 95 additions and 124 deletions
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50
source/Noise.cpp
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@@ -17,56 +17,6 @@
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// 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: