From 8abfaa04cc31763c5b048fdeace3934df0bfbfb3 Mon Sep 17 00:00:00 2001
From: David Adam <David.Adam@math.cnrs.fr>
Date: Thu, 15 Nov 2007 11:27:19 +0100
Subject: [PATCH] d3dx8: Implement D3DXPlaneNormalize.

---
 dlls/d3dx8/d3dx8.spec   |  2 +-
 dlls/d3dx8/math.c       | 24 ++++++++++++++++++++++++
 dlls/d3dx8/tests/math.c | 17 ++++++++++++++++-
 include/d3dx8math.h     |  2 ++
 4 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/dlls/d3dx8/d3dx8.spec b/dlls/d3dx8/d3dx8.spec
index 75785970dfe..37595133f44 100644
--- a/dlls/d3dx8/d3dx8.spec
+++ b/dlls/d3dx8/d3dx8.spec
@@ -61,7 +61,7 @@
 @ stub D3DXQuaternionSlerp
 @ stub D3DXQuaternionSquad
 @ stub D3DXQuaternionBaryCentric
-@ stub D3DXPlaneNormalize
+@ stdcall D3DXPlaneNormalize(ptr ptr)
 @ stub D3DXPlaneIntersectLine
 @ stub D3DXPlaneFromPointNormal
 @ stub D3DXPlaneFromPoints
diff --git a/dlls/d3dx8/math.c b/dlls/d3dx8/math.c
index 15276fa669f..9a9def9e9e5 100644
--- a/dlls/d3dx8/math.c
+++ b/dlls/d3dx8/math.c
@@ -433,6 +433,30 @@ D3DXMATRIX* WINAPI D3DXMatrixTranspose(D3DXMATRIX *pout, CONST D3DXMATRIX *pm)
     return pout;
 }
 
+/*_________________D3DXPLANE________________*/
+
+D3DXPLANE* WINAPI D3DXPlaneNormalize(D3DXPLANE *pout, CONST D3DXPLANE *pp)
+{
+    FLOAT norm;
+
+    norm = sqrt(pp->a * pp->a + pp->b * pp->b + pp->c * pp->c);
+    if ( norm )
+    {
+     pout->a = pp->a / norm;
+     pout->b = pp->b / norm;
+     pout->c = pp->c / norm;
+     pout->d = pp->d / norm;
+    }
+    else
+    {
+     pout->a = 0.0f;
+     pout->b = 0.0f;
+     pout->c = 0.0f;
+     pout->d = 0.0f;
+    }
+    return pout;
+}
+
 /*_________________D3DXQUATERNION________________*/
 
 D3DXQUATERNION* WINAPI D3DXQuaternionNormalize(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq)
diff --git a/dlls/d3dx8/tests/math.c b/dlls/d3dx8/tests/math.c
index 9e862ab7612..e3dc06001d9 100644
--- a/dlls/d3dx8/tests/math.c
+++ b/dlls/d3dx8/tests/math.c
@@ -50,6 +50,8 @@
        U(gotmat).m[3][0],U(gotmat).m[3][1],U(gotmat).m[3][2],U(gotmat).m[3][3]); \
 }
 
+#define expect_plane(expectedplane,gotplane) ok((fabs(expectedplane.a-gotplane.a)<admitted_error)&&(fabs(expectedplane.b-gotplane.b)<admitted_error)&&(fabs(expectedplane.c-gotplane.c)<admitted_error)&&(fabs(expectedplane.d-gotplane.d)<admitted_error),"Expected Plane= (%f, %f, %f, %f)\n , Got Plane= (%f, %f, %f, %f)\n", expectedplane.a, expectedplane.b, expectedplane.c, expectedplane.d, gotplane.a, gotplane.b, gotplane.c, gotplane.d);
+
 #define expect_vec(expectedvec,gotvec) ok((fabs(expectedvec.x-gotvec.x)<admitted_error)&&(fabs(expectedvec.y-gotvec.y)<admitted_error),"Expected Vector= (%f, %f)\n , Got Vector= (%f, %f)\n", expectedvec.x, expectedvec.y, gotvec.x, gotvec.y);
 
 #define expect_vec3(expectedvec,gotvec) ok((fabs(expectedvec.x-gotvec.x)<admitted_error)&&(fabs(expectedvec.y-gotvec.y)<admitted_error)&&(fabs(expectedvec.z-gotvec.z)<admitted_error),"Expected Vector= (%f, %f, %f)\n , Got Vector= (%f, %f, %f)\n", expectedvec.x, expectedvec.y, expectedvec.z, gotvec.x, gotvec.y, gotvec.z);
@@ -413,7 +415,7 @@ static void D3DXMatrixTest(void)
 
 static void D3DXPlaneTest(void)
 {
-    D3DXPLANE plane;
+    D3DXPLANE expectedplane, gotplane, nulplane, plane;
     D3DXVECTOR4 vec;
     FLOAT expected, got;
 
@@ -452,6 +454,19 @@ static void D3DXPlaneTest(void)
     expected = 0.0f;
     got = D3DXPlaneDotNormal(NULL,NULL),
     ok( expected == got, "Expected : %f, Got : %f\n",expected, got);
+
+/*_______________D3DXPlaneDotNormalize______________*/
+    expectedplane.a = -3.0f/sqrt(26.0f); expectedplane.b = -1.0f/sqrt(26.0f); expectedplane.c = 4.0f/sqrt(26.0f); expectedplane.d = 7.0/sqrt(26.0f);
+    D3DXPlaneNormalize(&gotplane, &plane);
+    expect_plane(expectedplane, gotplane);
+    nulplane.a = 0.0; nulplane.b = 0.0f, nulplane.c = 0.0f; nulplane.d = 0.0f;
+    expectedplane.a = 0.0f; expectedplane.b = 0.0f; expectedplane.c = 0.0f; expectedplane.d = 0.0f;
+    D3DXPlaneNormalize(&gotplane, &nulplane);
+    expect_plane(expectedplane, gotplane);
+    nulplane.a = 0.0; nulplane.b = 0.0f, nulplane.c = 0.0f; nulplane.d = 4.3f;
+    expectedplane.a = 0.0f; expectedplane.b = 0.0f; expectedplane.c = 0.0f; expectedplane.d = 0.0f;
+    D3DXPlaneNormalize(&gotplane, &nulplane);
+    expect_plane(expectedplane, gotplane);
 }
 
 static void D3X8QuaternionTest(void)
diff --git a/include/d3dx8math.h b/include/d3dx8math.h
index cfe48454330..c92535e3d3d 100644
--- a/include/d3dx8math.h
+++ b/include/d3dx8math.h
@@ -291,6 +291,8 @@ D3DXMATRIX* WINAPI D3DXMatrixScaling(D3DXMATRIX *pout, FLOAT sx, FLOAT sy, FLOAT
 D3DXMATRIX* WINAPI D3DXMatrixTranslation(D3DXMATRIX *pout, FLOAT x, FLOAT y, FLOAT z);
 D3DXMATRIX* WINAPI D3DXMatrixTranspose(D3DXMATRIX *pout, CONST D3DXMATRIX *pm);
 
+D3DXPLANE* WINAPI D3DXPlaneNormalize(D3DXPLANE *pout, CONST D3DXPLANE *pp);
+
 D3DXQUATERNION* WINAPI D3DXQuaternionNormalize(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq);
 
 D3DXVECTOR2* WINAPI D3DXVec2BaryCentric(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2, CONST D3DXVECTOR2 *pv3, FLOAT f, FLOAT g);