Implements D3DRMVectorReflect

[David.Adam at math.cnrs.fr]

-------------- next part --------------
>From 61c6879323d78b47ca9a1946323f0350cb87a3dd Mon Sep 17 00:00:00 2001
From: Adam <David.Adam at math.cnrs.fr>
Date: Sun, 15 Apr 2007 13:55:40 +0200
Subject: [PATCH] [10] Implements D3DRMVectorReflect with test.

---
 dlls/d3drm/d3drm.spec     |    2 +-
 dlls/d3drm/math.c         |    8 ++++++++
 dlls/d3drm/tests/vector.c |   13 ++++++++++++-
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/dlls/d3drm/d3drm.spec b/dlls/d3drm/d3drm.spec
index 5af714e..19361a9 100644
--- a/dlls/d3drm/d3drm.spec
+++ b/dlls/d3drm/d3drm.spec
@@ -14,7 +14,7 @@
 @ stdcall D3DRMVectorModulus(ptr)
 @ stdcall D3DRMVectorNormalize(ptr)
 @ stdcall D3DRMVectorRandom(ptr)
-@ stub D3DRMVectorReflect
+@ stdcall D3DRMVectorReflect(ptr ptr ptr)
 @ stub D3DRMVectorRotate
 @ stdcall D3DRMVectorScale(ptr ptr long)
 @ stdcall D3DRMVectorSubtract(ptr ptr ptr)
diff --git a/dlls/d3drm/math.c b/dlls/d3drm/math.c
index 31192e4..9882464 100644
--- a/dlls/d3drm/math.c
+++ b/dlls/d3drm/math.c
@@ -92,6 +92,14 @@ LPD3DVECTOR D3DRMAPI D3DRMVectorRandom(L
     return d;
 }
 
+/* Reflection of a vector on a surface */
+LPD3DVECTOR D3DRMAPI D3DRMVectorReflect(LPD3DVECTOR r, LPD3DVECTOR ray, LPD3DVECTOR norm)
+{
+    D3DVECTOR sca;
+    D3DRMVectorSubtract(r,D3DRMVectorScale(&sca,norm,2*D3DRMVectorDotProduct(ray,norm)),ray);
+    return r;
+}
+
 /* Scale a vector */
 LPD3DVECTOR D3DRMAPI D3DRMVectorScale(LPD3DVECTOR d, LPD3DVECTOR s, D3DVALUE factor)
 {
diff --git a/dlls/d3drm/tests/vector.c b/dlls/d3drm/tests/vector.c
index 96c4a3d..0e38b7d 100644
--- a/dlls/d3drm/tests/vector.c
+++ b/dlls/d3drm/tests/vector.c
@@ -32,6 +32,7 @@ static LPD3DVECTOR (D3DRMAPI *pD3DRMVect
 static D3DVALUE (D3DRMAPI *pD3DRMVectorDotProduct)(LPD3DVECTOR,LPD3DVECTOR);
 static D3DVALUE (D3DRMAPI *pD3DRMVectorModulus)(LPD3DVECTOR);
 static LPD3DVECTOR (D3DRMAPI *pD3DRMVectorNormalize)(LPD3DVECTOR);
+static LPD3DVECTOR (D3DRMAPI *pD3DRMVectorReflect)(LPD3DVECTOR,LPD3DVECTOR,LPD3DVECTOR);
 static LPD3DVECTOR (D3DRMAPI *pD3DRMVectorScale)(LPD3DVECTOR,LPD3DVECTOR,D3DVALUE);
 static LPD3DVECTOR (D3DRMAPI *pD3DRMVectorSubtract)(LPD3DVECTOR,LPD3DVECTOR,LPD3DVECTOR);
 
@@ -50,6 +51,7 @@ static void init_function_pointers(void)
     pD3DRMVectorDotProduct = (void*)GetProcAddress(hmod, "D3DRMVectorDotProduct");
     pD3DRMVectorModulus = (void*)GetProcAddress(hmod, "D3DRMVectorModulus");
     pD3DRMVectorNormalize = (void*)GetProcAddress(hmod, "D3DRMVectorNormalize");
+    pD3DRMVectorReflect = (void*)GetProcAddress(hmod, "D3DRMVectorReflect");
     pD3DRMVectorScale = (void*)GetProcAddress(hmod, "D3DRMVectorScale");
     pD3DRMVectorSubtract = (void*)GetProcAddress(hmod, "D3DRMVectorSubtract");
 }
@@ -57,7 +59,7 @@ static void init_function_pointers(void)
 static void VectorTest(void)
 {
     D3DVALUE mod,par;
-    D3DVECTOR e,r,u,v,casnul;
+    D3DVECTOR e,r,u,v,casnul,ray,norm;
 
     u.x=2.0;u.y=2.0;u.z=1.0;
     v.x=4.0;v.y=4.0;v.z=0.0;
@@ -100,6 +102,15 @@ static void VectorTest(void)
     expect_vec(e,casnul);
               }
 
+/*____________________VectorReflect_________________________________*/
+    ray.x=3.0; ray.y=-4.0; ray.z=5.0;
+    norm.x=1.0; norm.y=-2.0; norm.z=6.0;
+    e.x=79.0; e.y=-160.0; e.z=487.0;
+    pD3DRMVectorReflect(&r,&ray,&norm);
+    todo_wine {
+               expect_vec(e,r);
+              }
+
 /*_______________________VectorScale__________________________*/
     par=2.5;
     pD3DRMVectorScale(&r,&u,par);
-- 
1.4.2