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d3dx9: Apply rotationcenter only when a rotation is done.

This commit is contained in:
Rico Schüller 2013-06-17 09:56:20 +02:00 committed by Alexandre Julliard
parent 4894711768
commit ee66470477
1 changed files with 6 additions and 23 deletions
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29
dlls/d3dx9_36/math.c
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@ -102,13 +102,6 @@ D3DXMATRIX * WINAPI D3DXMatrixAffineTransformation(D3DXMATRIX *out, FLOAT scalin
D3DXMatrixIdentity(out);
if (rotationcenter)
{
out->u.m[3][0] = -rotationcenter->x;
out->u.m[3][1] = -rotationcenter->y;
out->u.m[3][2] = -rotationcenter->z;
}
if (rotation)
{
FLOAT temp00, temp01, temp02, temp10, temp11, temp12, temp20, temp21, temp22;
@ -135,15 +128,12 @@ D3DXMATRIX * WINAPI D3DXMatrixAffineTransformation(D3DXMATRIX *out, FLOAT scalin
if (rotationcenter)
{
FLOAT x, y, z;
x = out->u.m[3][0];
y = out->u.m[3][1];
z = out->u.m[3][2];
out->u.m[3][0] = x * temp00 + y * temp10 + z * temp20;
out->u.m[3][1] = x * temp01 + y * temp11 + z * temp21;
out->u.m[3][2] = x * temp02 + y * temp12 + z * temp22;
out->u.m[3][0] = rotationcenter->x * (1.0f - temp00) - rotationcenter->y * temp10
- rotationcenter->z * temp20;
out->u.m[3][1] = rotationcenter->y * (1.0f - temp11) - rotationcenter->x * temp01
- rotationcenter->z * temp21;
out->u.m[3][2] = rotationcenter->z * (1.0f - temp22) - rotationcenter->x * temp02
- rotationcenter->y * temp12;
}
}
else
@ -153,13 +143,6 @@ D3DXMATRIX * WINAPI D3DXMatrixAffineTransformation(D3DXMATRIX *out, FLOAT scalin
out->u.m[2][2] = scaling;
}
if (rotationcenter)
{
out->u.m[3][0] += rotationcenter->x;
out->u.m[3][1] += rotationcenter->y;
out->u.m[3][2] += rotationcenter->z;
}
if (translation)
{
out->u.m[3][0] += translation->x;