d3dx8: Implement D3DXPlaneFromPointNormal.

dlls/d3dx8/d3dx8.spec

@@ -63,7 +63,7 @@
 @ stub D3DXQuaternionBaryCentric
 @ stdcall D3DXPlaneNormalize(ptr ptr)
 @ stdcall D3DXPlaneIntersectLine(ptr ptr ptr ptr)
-@ stub D3DXPlaneFromPointNormal
+@ stdcall D3DXPlaneFromPointNormal(ptr ptr ptr)
 @ stub D3DXPlaneFromPoints
 @ stub D3DXPlaneTransform
 @ stub D3DXColorAdjustSaturation

dlls/d3dx8/math.c

@@ -482,6 +482,15 @@ D3DXMATRIX* WINAPI D3DXMatrixTranspose(D3DXMATRIX *pout, CONST D3DXMATRIX *pm)
 
 /*_________________D3DXPLANE________________*/
 
+D3DXPLANE* WINAPI D3DXPlaneFromPointNormal(D3DXPLANE *pout, CONST D3DXVECTOR3 *pvpoint, CONST D3DXVECTOR3 *pvnormal)
+{
+    pout->a = pvnormal->x;
+    pout->b = pvnormal->y;
+    pout->c = pvnormal->z;
+    pout->d = -D3DXVec3Dot(pvpoint, pvnormal);
+    return pout;
+}
+
 D3DXVECTOR3* WINAPI D3DXPlaneIntersectLine(D3DXVECTOR3 *pout, CONST D3DXPLANE *pp, CONST D3DXVECTOR3 *pv1, CONST D3DXVECTOR3 *pv2)
 {
     D3DXVECTOR3 direction, normal;

dlls/d3dx8/tests/math.c

@@ -478,6 +478,13 @@ static void D3DXPlaneTest(void)
     got = D3DXPlaneDotNormal(NULL,NULL),
     ok( expected == got, "Expected : %f, Got : %f\n",expected, got);
 
+/*_______________D3DXPlaneFromPointNormal_______*/
+    vec1.x = 11.0f; vec1.y = 13.0f; vec1.z = 15.0f;
+    vec2.x = 17.0f; vec2.y = 31.0f; vec2.z = 24.0f;
+    expectedplane.a = 17.0f; expectedplane.b = 31.0f; expectedplane.c = 24.0f; expectedplane.d = -950.0f;
+    D3DXPlaneFromPointNormal(&gotplane,&vec1,&vec2);
+    expect_plane(expectedplane, gotplane);
+
 /*_______________D3DXPlaneIntersectLine___________*/
     vec1.x = 9.0f; vec1.y = 6.0f; vec1.z = 3.0f;
     vec2.x = 2.0f; vec2.y = 5.0f; vec2.z = 8.0f;

include/d3dx8math.h

@@ -293,6 +293,7 @@ D3DXMATRIX* WINAPI D3DXMatrixShadow(D3DXMATRIX *pout, CONST D3DXVECTOR4 *plight,
 D3DXMATRIX* WINAPI D3DXMatrixTranslation(D3DXMATRIX *pout, FLOAT x, FLOAT y, FLOAT z);
 D3DXMATRIX* WINAPI D3DXMatrixTranspose(D3DXMATRIX *pout, CONST D3DXMATRIX *pm);
 
+D3DXPLANE* WINAPI D3DXPlaneFromPointNormal(D3DXPLANE *pout, CONST D3DXVECTOR3 *pvpoint, CONST D3DXVECTOR3 *pvnormal);
 D3DXVECTOR3* WINAPI D3DXPlaneIntersectLine(D3DXVECTOR3 *pout, CONST D3DXPLANE *pp, CONST D3DXVECTOR3 *pv1, CONST D3DXVECTOR3 *pv2);
 D3DXPLANE* WINAPI D3DXPlaneNormalize(D3DXPLANE *pout, CONST D3DXPLANE *pp);