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d3dx8: Implement D3DXMatrixLookAtRH.

This commit is contained in:
David Adam 2007-11-03 09:33:51 +01:00 committed by Alexandre Julliard
parent 15f029a5ee
commit 8d996a22a8
4 changed files with 42 additions and 2 deletions
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2
dlls/d3dx8/d3dx8.spec
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@ -34,7 +34,7 @@
@ stdcall D3DXMatrixRotationYawPitchRoll(ptr long long long)
@ stub D3DXMatrixTransformation
@ stub D3DXMatrixAffineTransformation
@ stub D3DXMatrixLookAtRH
@ stdcall D3DXMatrixLookAtRH(ptr ptr ptr ptr ptr)
@ stub D3DXMatrixLookAtLH
@ stub D3DXMatrixPerspectiveRH
@ stub D3DXMatrixPerspectiveLH

29
dlls/d3dx8/math.c
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@ -44,6 +44,35 @@ FLOAT WINAPI D3DXMatrixfDeterminant(CONST D3DXMATRIX *pm)
return det;
}
D3DXMATRIX* WINAPI D3DXMatrixLookAtRH(D3DXMATRIX *pout, CONST D3DXVECTOR3 *peye, CONST D3DXVECTOR3 *pat, CONST D3DXVECTOR3 *pup)
{
D3DXVECTOR3 right, rightn, up, upn, vec, vec2;
D3DXVec3Subtract(&vec2, pat, peye);
D3DXVec3Normalize(&vec, &vec2);
D3DXVec3Cross(&right, pup, &vec);
D3DXVec3Cross(&up, &vec, &right);
D3DXVec3Normalize(&rightn, &right);
D3DXVec3Normalize(&upn, &up);
pout->m[0][0] = -rightn.x;
pout->m[1][0] = -rightn.y;
pout->m[2][0] = -rightn.z;
pout->m[3][0] = D3DXVec3Dot(&rightn,peye);
pout->m[0][1] = upn.x;
pout->m[1][1] = upn.y;
pout->m[2][1] = upn.z;
pout->m[3][1] = -D3DXVec3Dot(&upn, peye);
pout->m[0][2] = -vec.x;
pout->m[1][2] = -vec.y;
pout->m[2][2] = -vec.z;
pout->m[3][2] = D3DXVec3Dot(&vec, peye);
pout->m[0][3] = 0.0f;
pout->m[1][3] = 0.0f;
pout->m[2][3] = 0.0f;
pout->m[3][3] = 1.0f;
return pout;
}
D3DXMATRIX* WINAPI D3DXMatrixMultiply(D3DXMATRIX *pout, CONST D3DXMATRIX *pm1, CONST D3DXMATRIX *pm2)
{
int i,j;

12
dlls/d3dx8/tests/math.c
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@ -150,7 +150,7 @@ static void D3DXMatrixTest(void)
{
D3DXMATRIX expectedmat, gotmat, mat, mat2, mat3;
D3DXQUATERNION q;
D3DXVECTOR3 axis;
D3DXVECTOR3 at, axis, eye;
BOOL expected, got;
FLOAT angle, expectedfloat, gotfloat;
@ -170,7 +170,9 @@ static void D3DXMatrixTest(void)
q.x = 1.0f; q.y = -4.0f; q.z =7.0f; q.w = -11.0f;
at.x = -2.0f; at.y = 13.0f; at.z = -9.0f;
axis.x = 1.0f; axis.y = -3.0f; axis.z = 7.0f;
eye.x = 8.0f; eye.y = -5.0f; eye.z = 5.75f;
angle = D3DX_PI/3.0f;
@ -196,6 +198,14 @@ static void D3DXMatrixTest(void)
got = D3DXMatrixIsIdentity(NULL);
ok(expected == got, "Expected : %d, Got : %d\n", expected, got);
/*____________D3DXMatrixLookatRH_______________*/
expectedmat.m[0][0] = 0.822465f; expectedmat.m[0][1] = -0.409489f; expectedmat.m[0][2] = 0.394803f; expectedmat.m[0][3] = 0.0f;
expectedmat.m[1][0] = 0.555856f; expectedmat.m[1][1] = 0.431286f; expectedmat.m[1][2] = -0.710645f; expectedmat.m[1][3] = 0.0f;
expectedmat.m[2][0] = 0.120729f; expectedmat.m[2][1] = 0.803935f; expectedmat.m[2][2] = 0.582335f; expectedmat.m[2][3] = 0.0f;
expectedmat.m[3][0] = -4.494634f; expectedmat.m[3][1] = 0.809719f; expectedmat.m[3][2] = -10.060076f; expectedmat.m[3][3] = 1.0f;
D3DXMatrixLookAtRH(&gotmat,&eye,&at,&axis);
expect_mat(expectedmat,gotmat);
/*____________D3DXMatrixMultiply______________*/
expectedmat.m[0][0] = 73.0f; expectedmat.m[0][1] = 193.0f; expectedmat.m[0][2] = -197.0f; expectedmat.m[0][3] = -77.0f;
expectedmat.m[1][0] = 231.0f; expectedmat.m[1][1] = 551.0f; expectedmat.m[1][2] = -489.0f; expectedmat.m[1][3] = -169.0;

1
include/d3dx8math.h
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@ -59,6 +59,7 @@ typedef struct D3DXCOLOR
} D3DXCOLOR, *LPD3DXCOLOR;
FLOAT WINAPI D3DXMatrixfDeterminant(CONST D3DXMATRIX *pm);
D3DXMATRIX* WINAPI D3DXMatrixLookAtRH(D3DXMATRIX *pout, CONST D3DXVECTOR3 *peye, CONST D3DXVECTOR3 *pat, CONST D3DXVECTOR3 *pup);
D3DXMATRIX* WINAPI D3DXMatrixMultiply(D3DXMATRIX *pout, CONST D3DXMATRIX *pm1, CONST D3DXMATRIX *pm2);
D3DXMATRIX* WINAPI D3DXMatrixRotationAxis(D3DXMATRIX *pout, CONST D3DXVECTOR3 *pv, FLOAT angle);
D3DXMATRIX* WINAPI D3DXMatrixRotationQuaternion(D3DXMATRIX *pout, CONST D3DXQUATERNION *pq);