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Generalize mesh chunking, and make it configurable. (#13179)

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* Generalize mesh chunking. Set 3x3x3 chunks.

* Make mesh chunk size configurable... Default to 1 (off).

* Extract all mesh grid maths into a dedicated class

---------

Co-authored-by: x2048 <codeforsmile@gmail.com>
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lhofhansl 2023-02-08 13:42:12 -08:00 • committed by GitHub
parent 56d2567b5d
commit d3a6ee00e6
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11 changed files with 116 additions and 116 deletions
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31
src/util/numeric.h
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@ -145,6 +145,37 @@ inline v3s16 componentwise_max(const v3s16 &a, const v3s16 &b)
return v3s16(MYMAX(a.X, b.X), MYMAX(a.Y, b.Y), MYMAX(a.Z, b.Z));
}
/// @brief Describes a grid with given step, oirginating at (0,0,0)
struct MeshGrid {
u16 cell_size;
u32 getCellVolume() const { return cell_size * cell_size * cell_size; }
/// @brief returns closest step of the grid smaller than p
s16 getMeshPos(s16 p) const
{
return ((p - (p < 0) * (cell_size - 1)) / cell_size * cell_size);
}
/// @brief Returns coordinates of the origin of the grid cell containing p
v3s16 getMeshPos(v3s16 p) const
{
return v3s16(getMeshPos(p.X), getMeshPos(p.Y), getMeshPos(p.Z));
}
/// @brief Returns true if p is an origin of a cell in the grid.
bool isMeshPos(v3s16 &p) const
{
return ((p.X + p.Y + p.Z) % cell_size) == 0;
}
/// @brief Returns index of the given offset in a grid cell
/// All offset coordinates must be smaller than the size of the cell
u16 getOffsetIndex(v3s16 offset) const
{
return (offset.Z * cell_size + offset.Y) * cell_size + offset.X;
}
};
/** Returns \p f wrapped to the range [-360, 360]
*