=?UTF-8?Q?Rico=20Sch=C3=BCller=20?=: d3dx9: Use float functions in D3DXMatrixRotationAxis().
Alexandre Julliard
julliard at winehq.org
Fri Sep 28 11:39:03 CDT 2012
Module: wine
Branch: master
Commit: 3e24dc642bd4fc68c145e6e391b23633feb4d96d
URL: http://source.winehq.org/git/wine.git/?a=commit;h=3e24dc642bd4fc68c145e6e391b23633feb4d96d
Author: Rico Schüller <kgbricola at web.de>
Date: Fri Sep 28 08:43:30 2012 +0200
d3dx9: Use float functions in D3DXMatrixRotationAxis().
---
dlls/d3dx9_36/math.c | 44 ++++++++++++++++++++++++++++----------------
1 files changed, 28 insertions(+), 16 deletions(-)
diff --git a/dlls/d3dx9_36/math.c b/dlls/d3dx9_36/math.c
index 70492fa..5996a9f 100644
--- a/dlls/d3dx9_36/math.c
+++ b/dlls/d3dx9_36/math.c
@@ -551,24 +551,36 @@ D3DXMATRIX* WINAPI D3DXMatrixReflect(D3DXMATRIX *pout, CONST D3DXPLANE *pplane)
return pout;
}
-D3DXMATRIX* WINAPI D3DXMatrixRotationAxis(D3DXMATRIX *pout, CONST D3DXVECTOR3 *pv, FLOAT angle)
+D3DXMATRIX * WINAPI D3DXMatrixRotationAxis(D3DXMATRIX *out, const D3DXVECTOR3 *v, FLOAT angle)
{
- D3DXVECTOR3 v;
+ D3DXVECTOR3 nv;
+ FLOAT sangle, cangle, cdiff;
- TRACE("(%p, %p, %f)\n", pout, pv, angle);
+ TRACE("out %p, v %p, angle %f\n", out, v, angle);
- D3DXVec3Normalize(&v,pv);
- D3DXMatrixIdentity(pout);
- pout->u.m[0][0] = (1.0f - cos(angle)) * v.x * v.x + cos(angle);
- pout->u.m[1][0] = (1.0f - cos(angle)) * v.x * v.y - sin(angle) * v.z;
- pout->u.m[2][0] = (1.0f - cos(angle)) * v.x * v.z + sin(angle) * v.y;
- pout->u.m[0][1] = (1.0f - cos(angle)) * v.y * v.x + sin(angle) * v.z;
- pout->u.m[1][1] = (1.0f - cos(angle)) * v.y * v.y + cos(angle);
- pout->u.m[2][1] = (1.0f - cos(angle)) * v.y * v.z - sin(angle) * v.x;
- pout->u.m[0][2] = (1.0f - cos(angle)) * v.z * v.x - sin(angle) * v.y;
- pout->u.m[1][2] = (1.0f - cos(angle)) * v.z * v.y + sin(angle) * v.x;
- pout->u.m[2][2] = (1.0f - cos(angle)) * v.z * v.z + cos(angle);
- return pout;
+ D3DXVec3Normalize(&nv, v);
+ sangle = sinf(angle);
+ cangle = cosf(angle);
+ cdiff = 1.0f - cangle;
+
+ out->u.m[0][0] = cdiff * nv.x * nv.x + cangle;
+ out->u.m[1][0] = cdiff * nv.x * nv.y - sangle * nv.z;
+ out->u.m[2][0] = cdiff * nv.x * nv.z + sangle * nv.y;
+ out->u.m[3][0] = 0.0f;
+ out->u.m[0][1] = cdiff * nv.y * nv.x + sangle * nv.z;
+ out->u.m[1][1] = cdiff * nv.y * nv.y + cangle;
+ out->u.m[2][1] = cdiff * nv.y * nv.z - sangle * nv.x;
+ out->u.m[3][1] = 0.0f;
+ out->u.m[0][2] = cdiff * nv.z * nv.x - sangle * nv.y;
+ out->u.m[1][2] = cdiff * nv.z * nv.y + sangle * nv.x;
+ out->u.m[2][2] = cdiff * nv.z * nv.z + cangle;
+ out->u.m[3][2] = 0.0f;
+ out->u.m[0][3] = 0.0f;
+ out->u.m[1][3] = 0.0f;
+ out->u.m[2][3] = 0.0f;
+ out->u.m[3][3] = 1.0f;
+
+ return out;
}
D3DXMATRIX* WINAPI D3DXMatrixRotationQuaternion(D3DXMATRIX *pout, CONST D3DXQUATERNION *pq)
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