本文整理汇总了C++中Matrix4x4::GetTrans方法的典型用法代码示例。如果您正苦于以下问题：C++ Matrix4x4::GetTrans方法的具体用法？C++ Matrix4x4::GetTrans怎么用？C++ Matrix4x4::GetTrans使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Matrix4x4的用法示例。
在下文中一共展示了Matrix4x4::GetTrans方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: InitQuery
BOOL OBBCollider::InitQuery(OBBCache& cache, const OBB& box, const Matrix4x4* worldb, const Matrix4x4* worldm)
{
// 1) Call the base method
VolumeCollider::InitQuery();
// 2) Compute obb in world space
mBoxExtents = box.mExtents;
Matrix4x4 WorldB;
if(worldb)
{
WorldB = Matrix4x4( box.mRot * Matrix3x3(*worldb) );
WorldB.SetTrans(box.mCenter * *worldb);
}
else
{
WorldB = box.mRot;
WorldB.SetTrans(box.mCenter);
}
// Setup matrices
Matrix4x4 InvWorldB;
InvertPRMatrix(InvWorldB, WorldB);
if(worldm)
{
Matrix4x4 InvWorldM;
InvertPRMatrix(InvWorldM, *worldm);
Matrix4x4 WorldBtoM = WorldB * InvWorldM;
Matrix4x4 WorldMtoB = *worldm * InvWorldB;
mRModelToBox = WorldMtoB; WorldMtoB.GetTrans(mTModelToBox);
mRBoxToModel = WorldBtoM; WorldBtoM.GetTrans(mTBoxToModel);
}
else
{
mRModelToBox = InvWorldB; InvWorldB.GetTrans(mTModelToBox);
mRBoxToModel = WorldB; WorldB.GetTrans(mTBoxToModel);
}
// 3) Setup destination pointer
mTouchedPrimitives = &cache.TouchedPrimitives;
// 4) Special case: 1-triangle meshes [Opcode 1.3]
if(mCurrentModel && mCurrentModel->HasSingleNode())
{
if(!SkipPrimitiveTests())
{
// We simply perform the BV-Prim overlap test each time. We assume single triangle has index 0.
mTouchedPrimitives->Reset();
// Perform overlap test between the unique triangle and the box (and set contact status if needed)
OBB_PRIM(udword(0), OPC_CONTACT)
// Return immediately regardless of status
return TRUE;
}
}示例2: InitQuery
BOOL OBBCollider::InitQuery(OBBCache& cache, const OBB& box, const Matrix4x4* worldb, const Matrix4x4* worldm)
{
// 1) Call the base method
VolumeCollider::InitQuery();
// 2) Compute obb in world space
mBoxExtents = box.mExtents;
Matrix4x4 WorldB;
if(worldb)
{
WorldB = Matrix4x4( box.mRot2 * Matrix3x3(*worldb) );
WorldB.SetTrans(box.mCenter * *worldb);
}
else
{
WorldB = box.mRot2;
WorldB.SetTrans(box.mCenter);
}
// Setup matrices
Matrix4x4 InvWorldB;
InvertPRMatrix(InvWorldB, WorldB);
if(worldm)
{
Matrix4x4 InvWorldM;
InvertPRMatrix(InvWorldM, *worldm);
Matrix4x4 WorldBtoM = WorldB * InvWorldM;
Matrix4x4 WorldMtoB = *worldm * InvWorldB;
mRModelToBox = WorldMtoB; WorldMtoB.GetTrans(mTModelToBox);
mRBoxToModel = WorldBtoM; WorldBtoM.GetTrans(mTBoxToModel);
}
else
{
mRModelToBox = InvWorldB; InvWorldB.GetTrans(mTModelToBox);
mRBoxToModel = WorldB; WorldB.GetTrans(mTBoxToModel);
}
// Precompute absolute box-to-model rotation matrix
for(udword i=0;i<3;i++)
{
for(udword j=0;j<3;j++)
{
// Epsilon value prevents floating-point inaccuracies (strategy borrowed from RAPID)
mAR.m[i][j] = 1e-6f + fabsf(mRBoxToModel.m[i][j]);
}
}
// Precompute bounds for box-in-box test
mB0 = mBoxExtents - mTModelToBox;
mB1 = - mBoxExtents - mTModelToBox;
// Precompute box-box data - Courtesy of Erwin de Vries
Point Box = mBoxExtents;
mBBx1 = Box.x*mAR.m[0][0] + Box.y*mAR.m[1][0] + Box.z*mAR.m[2][0];
mBBy1 = Box.x*mAR.m[0][1] + Box.y*mAR.m[1][1] + Box.z*mAR.m[2][1];
mBBz1 = Box.x*mAR.m[0][2] + Box.y*mAR.m[1][2] + Box.z*mAR.m[2][2];
mBB_1 = Box.y*mAR.m[2][0] + Box.z*mAR.m[1][0];
mBB_2 = Box.x*mAR.m[2][0] + Box.z*mAR.m[0][0];
mBB_3 = Box.x*mAR.m[1][0] + Box.y*mAR.m[0][0];
mBB_4 = Box.y*mAR.m[2][1] + Box.z*mAR.m[1][1];
mBB_5 = Box.x*mAR.m[2][1] + Box.z*mAR.m[0][1];
mBB_6 = Box.x*mAR.m[1][1] + Box.y*mAR.m[0][1];
mBB_7 = Box.y*mAR.m[2][2] + Box.z*mAR.m[1][2];
mBB_8 = Box.x*mAR.m[2][2] + Box.z*mAR.m[0][2];
mBB_9 = Box.x*mAR.m[1][2] + Box.y*mAR.m[0][2];
// 3) Setup destination pointer
mTouchedPrimitives = &cache.TouchedPrimitives;
// 4) Check temporal coherence:
if(TemporalCoherenceEnabled())
{
// Here we use temporal coherence
// => check results from previous frame before performing the collision query
if(FirstContactEnabled())
{
// We're only interested in the first contact found => test the unique previously touched face
if(mTouchedPrimitives->GetNbEntries())
{
// Get index of previously touched face = the first entry in the array
udword PreviouslyTouchedFace = mTouchedPrimitives->GetEntry(0);
// Then reset the array:
// - if the overlap test below is successful, the index we'll get added back anyway
// - if it isn't, then the array should be reset anyway for the normal query
mTouchedPrimitives->Reset();
// Perform overlap test between the cached triangle and the box (and set contact status if needed)
OBB_PRIM(PreviouslyTouchedFace)
}
// else no face has been touched during previous query
// => we'll have to perform a normal query
}
else mTouchedPrimitives->Reset();