d3dx8: Implement the spherical interpolation part for D3DXQuaternionSlerp.
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@ -1173,15 +1173,27 @@ D3DXQUATERNION* WINAPI D3DXQuaternionRotationYawPitchRoll(D3DXQUATERNION *pout,
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D3DXQUATERNION* WINAPI D3DXQuaternionSlerp(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq1, CONST D3DXQUATERNION *pq2, FLOAT t)
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D3DXQUATERNION* WINAPI D3DXQuaternionSlerp(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq1, CONST D3DXQUATERNION *pq2, FLOAT t)
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{
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{
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FLOAT dot, epsilon;
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FLOAT dot, epsilon, temp, theta, u;
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epsilon = 1.0f;
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epsilon = 1.0f;
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temp = 1.0f - t;
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u = t;
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dot = D3DXQuaternionDot(pq1, pq2);
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dot = D3DXQuaternionDot(pq1, pq2);
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if ( dot < 0.0f) epsilon = -1.0f;
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if ( dot < 0.0f )
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pout->x = (1.0f - t) * pq1->x + epsilon * t * pq2->x;
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{
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pout->y = (1.0f - t) * pq1->y + epsilon * t * pq2->y;
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epsilon = -1.0f;
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pout->z = (1.0f - t) * pq1->z + epsilon * t * pq2->z;
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dot = -dot;
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pout->w = (1.0f - t) * pq1->w + epsilon * t * pq2->w;
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}
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if( 1.0f - dot > 0.001f )
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{
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theta = acos(dot);
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temp = sin(theta * temp) / sin(theta);
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u = sin(theta * u) / sin(theta);
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}
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pout->x = temp * pq1->x + epsilon * u * pq2->x;
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pout->y = temp * pq1->y + epsilon * u * pq2->y;
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pout->z = temp * pq1->z + epsilon * u * pq2->z;
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pout->w = temp * pq1->w + epsilon * u * pq2->w;
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return pout;
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return pout;
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}
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}
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@ -582,7 +582,7 @@ static void D3DXPlaneTest(void)
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static void D3X8QuaternionTest(void)
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static void D3X8QuaternionTest(void)
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{
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{
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D3DXMATRIX mat;
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D3DXMATRIX mat;
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D3DXQUATERNION expectedquat, gotquat, Nq, Nq1, nul, q, r, s, t, u;
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D3DXQUATERNION expectedquat, gotquat, Nq, Nq1, nul, smallq, smallr, q, r, s, t, u;
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LPD3DXQUATERNION funcpointer;
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LPD3DXQUATERNION funcpointer;
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D3DXVECTOR3 axis, expectedvec;
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D3DXVECTOR3 axis, expectedvec;
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FLOAT angle, expected, got, scale, scale2;
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FLOAT angle, expected, got, scale, scale2;
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@ -591,8 +591,10 @@ static void D3X8QuaternionTest(void)
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nul.x = 0.0f; nul.y = 0.0f; nul.z = 0.0f; nul.w = 0.0f;
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nul.x = 0.0f; nul.y = 0.0f; nul.z = 0.0f; nul.w = 0.0f;
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q.x = 1.0f, q.y = 2.0f; q.z = 4.0f; q.w = 10.0f;
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q.x = 1.0f, q.y = 2.0f; q.z = 4.0f; q.w = 10.0f;
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r.x = -3.0f; r.y = 4.0f; r.z = -5.0f; r.w = 7.0;
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r.x = -3.0f; r.y = 4.0f; r.z = -5.0f; r.w = 7.0;
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t.x = -1111.0f, t.y= 111.0f; t.z = -11.0f; t.w = 1.0f;
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t.x = -1111.0f, t.y = 111.0f; t.z = -11.0f; t.w = 1.0f;
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u.x = 91.0f; u.y = - 82.0f; u.z = 7.3f; u.w = -6.4f;
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u.x = 91.0f; u.y = - 82.0f; u.z = 7.3f; u.w = -6.4f;
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smallq.x = 0.1f; smallq.y = 0.2f; smallq.z= 0.3f; smallq.w = 0.4f;
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smallr.x = 0.5f; smallr.y = 0.6f; smallr.z= 0.7f; smallq.w = 0.8f;
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scale = 0.3f;
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scale = 0.3f;
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scale2 = 0.78f;
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scale2 = 0.78f;
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@ -873,6 +875,9 @@ static void D3X8QuaternionTest(void)
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expectedquat.x = 334.0f; expectedquat.y = -31.9f; expectedquat.z = 6.1f; expectedquat.w = 6.7f;
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expectedquat.x = 334.0f; expectedquat.y = -31.9f; expectedquat.z = 6.1f; expectedquat.w = 6.7f;
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D3DXQuaternionSlerp(&gotquat,&q,&t,scale);
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D3DXQuaternionSlerp(&gotquat,&q,&t,scale);
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expect_vec4(expectedquat,gotquat);
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expect_vec4(expectedquat,gotquat);
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expectedquat.x = 0.267071f; expectedquat.y = 0.384114f; expectedquat.z = 0.501157f; expectedquat.w = 0.636291f;
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D3DXQuaternionSlerp(&gotquat,&smallq,&smallr,scale);
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expect_vec4(expectedquat,gotquat);
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/*_______________D3DXQuaternionSquad________________________*/
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/*_______________D3DXQuaternionSquad________________________*/
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expectedquat.x = -156.296f; expectedquat.y = 30.242f; expectedquat.z = -2.5022f; expectedquat.w = 7.3576f;
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expectedquat.x = -156.296f; expectedquat.y = 30.242f; expectedquat.z = -2.5022f; expectedquat.w = 7.3576f;
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