David Adam : d3dx8: Implement D3DXVecScale with a test.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 18123a93644a9025b16edb01d35d2a36b2323ad4
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=18123a93644a9025b16edb01d35d2a36b2323ad4

Author: David Adam <David.Adam at math.cnrs.fr>
Date:   Sun Oct 14 20:20:01 2007 +0200

d3dx8: Implement D3DXVecScale with a test.

---

 dlls/d3dx8/tests/math.c |   15 ++++++++++++---
 include/d3dx8math.h     |    1 +
 include/d3dx8math.inl   |    7 +++++++
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/dlls/d3dx8/tests/math.c b/dlls/d3dx8/tests/math.c
index aefb55c..95452b3 100644
--- a/dlls/d3dx8/tests/math.c
+++ b/dlls/d3dx8/tests/math.c
@@ -30,10 +30,11 @@ static void D3X8Vector2Test(void)
 {
     D3DXVECTOR2 expectedvec, gotvec, u, v;
     LPD3DXVECTOR2 funcpointer;
-    FLOAT expected, got;
+    FLOAT expected, got, scale;
 
     u.x=3.0f; u.y=4.0f;
     v.x=-7.0f; v.y=9.0f;
+    scale = -6.5f;
 
 /*_______________D3DXVec2Add__________________________*/
    expectedvec.x = -4.0f; expectedvec.y = 13.0f;
@@ -89,7 +90,6 @@ static void D3X8Vector2Test(void)
 
 /*_______________D3DXVec2Maximize__________________________*/
    expectedvec.x = 3.0f; expectedvec.y = 9.0f;
-   /*gotvec.x=0.0f; gotvec.y=0.0f;*/
    D3DXVec2Maximize(&gotvec,&u,&v);
    expect_vec(expectedvec,gotvec);
    /* Tests the case NULL */
@@ -100,7 +100,6 @@ static void D3X8Vector2Test(void)
 
 /*_______________D3DXVec2Minimize__________________________*/
    expectedvec.x = -7.0f; expectedvec.y = 4.0f;
-   /*vecgot.x=0.0f; vecgot.y=0.0f;*/
    D3DXVec2Minimize(&gotvec,&u,&v);
    expect_vec(expectedvec,gotvec);
    /* Tests the case NULL */
@@ -109,6 +108,16 @@ static void D3X8Vector2Test(void)
     funcpointer = D3DXVec2Minimize(NULL,NULL,NULL);
     ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
 
+/*_______________D3DXVec2Scale____________________________*/
+    expectedvec.x = -19.5f; expectedvec.y = -26.0f;
+    D3DXVec2Scale(&gotvec,&u,scale);
+    expect_vec(expectedvec,gotvec);
+    /* Tests the case NULL */
+    funcpointer = D3DXVec2Scale(&gotvec,NULL,scale);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+    funcpointer = D3DXVec2Scale(NULL,NULL,scale);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+
 /*_______________D3DXVec2Subtract__________________________*/
    expectedvec.x = 10.0f; expectedvec.y = -5.0f;
    D3DXVec2Subtract(&gotvec,&u,&v);
diff --git a/include/d3dx8math.h b/include/d3dx8math.h
index 04528e9..d39563c 100644
--- a/include/d3dx8math.h
+++ b/include/d3dx8math.h
@@ -65,6 +65,7 @@ FLOAT D3DXVec2Length(CONST D3DXVECTOR2 *pv);
 FLOAT D3DXVec2LengthSq(CONST D3DXVECTOR2 *pv);
 D3DXVECTOR2* D3DXVec2Maximize(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2);
 D3DXVECTOR2* D3DXVec2Minimize(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2);
+D3DXVECTOR2* D3DXVec2Scale(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv, FLOAT s);
 D3DXVECTOR2* D3DXVec2Subtract(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2);
 
 #endif /* __D3DX8MATH_H__ */
diff --git a/include/d3dx8math.inl b/include/d3dx8math.inl
index 4852f5f..81543c1 100644
--- a/include/d3dx8math.inl
+++ b/include/d3dx8math.inl
@@ -66,6 +66,13 @@ extern inline D3DXVECTOR2* D3DXVec2Minimize(D3DXVECTOR2 *pout, CONST D3DXVECTOR2
     pout->y = min(pv1->y , pv2->y);
     return pout;
 }
+extern inline D3DXVECTOR2* D3DXVec2Scale(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv, FLOAT s)
+{
+    if ( !pout || !pv) return NULL;
+    pout->x = s * (pv->x);
+    pout->y = s * (pv->y);
+    return pout;
+}
 
 extern inline D3DXVECTOR2* D3DXVec2Subtract(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2)
 {