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d3drm: Implement D3DRMVectorReflect.

This commit is contained in:
David Adam 2007-04-19 21:11:38 +02:00 committed by Alexandre Julliard
parent f9e6f42b86
commit 7fccb04201
3 changed files with 17 additions and 2 deletions
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2
dlls/d3drm/d3drm.spec
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@ -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)

8
dlls/d3drm/math.c
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@ -102,6 +102,14 @@ LPD3DVECTOR WINAPI D3DRMVectorRandom(LPD3DVECTOR d)
return d;
}
/* Reflection of a vector on a surface */
LPD3DVECTOR WINAPI D3DRMVectorReflect(LPD3DVECTOR r, LPD3DVECTOR ray, LPD3DVECTOR norm)
{
D3DVECTOR sca;
D3DRMVectorSubtract(r, D3DRMVectorScale(&sca, norm, 2.0*D3DRMVectorDotProduct(ray,norm)), ray);
return r;
}
/* Scale a vector */
LPD3DVECTOR WINAPI D3DRMVectorScale(LPD3DVECTOR d, LPD3DVECTOR s, D3DVALUE factor)
{

9
dlls/d3drm/tests/vector.c
View File

@ -33,7 +33,7 @@
void VectorTest(void)
{
D3DVALUE mod,par;
D3DVECTOR e,r,u,v,casnul;
D3DVECTOR e,r,u,v,casnul,norm,ray;
u.x=2.0;u.y=2.0;u.z=1.0;
v.x=4.0;v.y=4.0;v.z=0.0;
@ -73,6 +73,13 @@ void VectorTest(void)
e.x=1.0; e.y=0.0; e.z=0.0;
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;
D3DRMVectorReflect(&r,&ray,&norm);
expect_vec(e,r);
/*_______________________VectorScale__________________________*/
par=2.5;
D3DRMVectorScale(&r,&v,par);