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Updated all the libs, added citro3d, added ctr.swkbd (WIP, untested)

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Firew0lf 2016-08-05 17:30:24 +02:00
parent 68a44645f7
commit 49c87e5526
97 changed files with 7341 additions and 944 deletions
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37
libs/citro3d/source/maths/mtx_lookat.c Normal file
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#include <c3d/maths.h>
void Mtx_LookAt(C3D_Mtx* out, C3D_FVec cameraPosition, C3D_FVec cameraTarget, C3D_FVec cameraUpVector, bool isLeftHanded)
{
//Left-handed and Right-handed Look-At matrix functions are DirectX implementations.
//Left-handed: https://msdn.microsoft.com/en-us/library/windows/desktop/bb281710
//Right-handed: https://msdn.microsoft.com/en-us/library/windows/desktop/bb281711
C3D_FVec xaxis, yaxis, zaxis;
//Order of operations is crucial.
if (isLeftHanded)
zaxis = FVec3_Normalize(FVec3_Subtract(cameraTarget, cameraPosition));
else
zaxis = FVec3_Normalize(FVec3_Subtract(cameraPosition, cameraTarget));
xaxis = FVec3_Normalize(FVec3_Cross(cameraUpVector, zaxis));
yaxis = FVec3_Cross(zaxis, xaxis);
out->r[0].x = xaxis.x;
out->r[0].y = xaxis.y;
out->r[0].z = xaxis.z;
out->r[0].w = -FVec3_Dot(xaxis, cameraPosition);
out->r[1].x = yaxis.x;
out->r[1].y = yaxis.y;
out->r[1].z = yaxis.z;
out->r[1].w = -FVec3_Dot(yaxis, cameraPosition);
out->r[2].x = zaxis.x;
out->r[2].y = zaxis.y;
out->r[2].z = zaxis.z;
out->r[2].w = -FVec3_Dot(zaxis, cameraPosition);
out->r[3].x = 0.0f;
out->r[3].y = 0.0f;
out->r[3].z = 0.0f;
out->r[3].w = 1.0f;
}