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Add Int32Matrix4x4 struct.

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This allows matrices to be represented as a value type, and additionally allows avoiding array allocations when calculating rotations.
This commit is contained in:
RoosterDragon
2018-03-17 16:44:41 +00:00
committed by abcdefg30
parent 5bd5a384b7
commit e17ede34ef
6 changed files with 148 additions and 52 deletions
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29
OpenRA.Game/Graphics/Util.cs
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@@ -323,12 +323,31 @@ namespace OpenRA.Graphics
return mtx;
}
public static float[] MakeFloatMatrix(int[] imtx)
public static float[] MakeFloatMatrix(Int32Matrix4x4 imtx)
{
var fmtx = new float[16];
for (var i = 0; i < 16; i++)
fmtx[i] = imtx[i] * 1f / imtx[15];
return fmtx;
var multipler = 1f / imtx.M44;
return new float[]
{
imtx.M11 * multipler,
imtx.M12 * multipler,
imtx.M13 * multipler,
imtx.M14 * multipler,
imtx.M21 * multipler,
imtx.M22 * multipler,
imtx.M23 * multipler,
imtx.M24 * multipler,
imtx.M31 * multipler,
imtx.M32 * multipler,
imtx.M33 * multipler,
imtx.M34 * multipler,
imtx.M41 * multipler,
imtx.M42 * multipler,
imtx.M43 * multipler,
imtx.M44 * multipler,
};
}
public static float[] MatrixAABBMultiply(float[] mtx, float[] bounds)