epic/OpenRA
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add Int32Matrix4x4 struct.

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

13
OpenRA.Game/WVec.cs
View File

@@ -46,19 +46,20 @@ namespace OpenRA
public WVec Rotate(WRot rot)
{
return Rotate(rot.AsMatrix());
Int32Matrix4x4 mtx;
rot.AsMatrix(out mtx);
return Rotate(ref mtx);
}
public WVec Rotate(int[] rotationMatrix)
public WVec Rotate(ref Int32Matrix4x4 mtx)
{
var mtx = rotationMatrix;
var lx = (long)X;
var ly = (long)Y;
var lz = (long)Z;
return new WVec(
(int)((lx * mtx[0] + ly * mtx[4] + lz * mtx[8]) / mtx[15]),
(int)((lx * mtx[1] + ly * mtx[5] + lz * mtx[9]) / mtx[15]),
(int)((lx * mtx[2] + ly * mtx[6] + lz * mtx[10]) / mtx[15]));
(int)((lx * mtx.M11 + ly * mtx.M21 + lz * mtx.M31) / mtx.M44),
(int)((lx * mtx.M12 + ly * mtx.M22 + lz * mtx.M32) / mtx.M44),
(int)((lx * mtx.M13 + ly * mtx.M23 + lz * mtx.M33) / mtx.M44));
}
public WAngle Yaw