David Adam : d3drm: Implement D3DRMVectorNormalize.
Alexandre Julliard
julliard at wine.codeweavers.com
Mon Apr 23 14:26:22 CDT 2007
Module: wine
Branch: master
Commit: 819362d0f73cce3c24c3db0f4f60167e66b91a40
URL: http://source.winehq.org/git/wine.git/?a=commit;h=819362d0f73cce3c24c3db0f4f60167e66b91a40
Author: David Adam <David.Adam at math.cnrs.fr>
Date: Thu Apr 19 21:10:46 2007 +0200
d3drm: Implement D3DRMVectorNormalize.
---
dlls/d3drm/d3drm.spec | 2 +-
dlls/d3drm/math.c | 17 +++++++++++++++++
dlls/d3drm/tests/vector.c | 14 +++++++++++++-
3 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/dlls/d3drm/d3drm.spec b/dlls/d3drm/d3drm.spec
index 1efbfd4..172f07e 100644
--- a/dlls/d3drm/d3drm.spec
+++ b/dlls/d3drm/d3drm.spec
@@ -12,7 +12,7 @@
@ stdcall D3DRMVectorCrossProduct(ptr ptr ptr)
@ stdcall D3DRMVectorDotProduct(ptr ptr)
@ stdcall D3DRMVectorModulus(ptr)
-@ stub D3DRMVectorNormalize
+@ stdcall D3DRMVectorNormalize(ptr)
@ stub D3DRMVectorRandom
@ stub D3DRMVectorReflect
@ stub D3DRMVectorRotate
diff --git a/dlls/d3drm/math.c b/dlls/d3drm/math.c
index 77f176e..8ab947a 100644
--- a/dlls/d3drm/math.c
+++ b/dlls/d3drm/math.c
@@ -75,6 +75,23 @@ D3DVALUE WINAPI D3DRMVectorModulus(LPD3DVECTOR v)
return result;
}
+/* Normalize a vector. Returns (1,0,0) if INPUT is the NULL vector. */
+LPD3DVECTOR WINAPI D3DRMVectorNormalize(LPD3DVECTOR u)
+{
+ D3DVALUE modulus = D3DRMVectorModulus(u);
+ if(modulus)
+ {
+ D3DRMVectorScale(u,u,1.0/modulus);
+ }
+ else
+ {
+ u->x=1.0;
+ u->y=0.0;
+ u->z=0.0;
+ }
+ return u;
+}
+
/* Scale a vector */
LPD3DVECTOR WINAPI D3DRMVectorScale(LPD3DVECTOR d, LPD3DVECTOR s, D3DVALUE factor)
{
diff --git a/dlls/d3drm/tests/vector.c b/dlls/d3drm/tests/vector.c
index 6f45801..45d6323 100644
--- a/dlls/d3drm/tests/vector.c
+++ b/dlls/d3drm/tests/vector.c
@@ -33,7 +33,7 @@
void VectorTest(void)
{
D3DVALUE mod,par;
- D3DVECTOR e,r,u,v;
+ D3DVECTOR e,r,u,v,casnul;
u.x=2.0;u.y=2.0;u.z=1.0;
v.x=4.0;v.y=4.0;v.z=0.0;
@@ -61,6 +61,18 @@ void VectorTest(void)
mod=D3DRMVectorModulus(&u);
ok((mod == 3.0), "Expected 3.0, Got %f",mod);
+/*_______________________VectorNormalize___________________________*/
+ D3DRMVectorNormalize(&u);
+ e.x=2.0/3.0;e.y=2.0/3.0;e.z=1.0/3.0;
+ expect_vec(e,u);
+
+/* If u is the NULL vector, MSDN says that the return vector is NULL. In fact, the returned vector is (1,0,0). The following test case prove it. */
+
+ casnul.x=0.0; casnul.y=0.0; casnul.z=0.0;
+ D3DRMVectorNormalize(&casnul);
+ e.x=1.0; e.y=0.0; e.z=0.0;
+ expect_vec(e,casnul);
+
/*_______________________VectorScale__________________________*/
par=2.5;
D3DRMVectorScale(&r,&v,par);
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