void DifferentialGeometry::ComputeDifferentials(
const RayDifferential &ray) const {
if (ray.hasDifferentials) {
// Estimate screen space change in $\pt{}$ and $(u,v)$
// Compute auxiliary intersection points with plane
float d = -Dot(nn, Vector(p.x, p.y, p.z));
Vector rxv(ray.rxOrigin.x, ray.rxOrigin.y, ray.rxOrigin.z);
float tx = -(Dot(nn, rxv) + d) / Dot(nn, ray.rxDirection);
if (isnan(tx)) goto fail;
Point px = ray.rxOrigin + tx * ray.rxDirection;
Vector ryv(ray.ryOrigin.x, ray.ryOrigin.y, ray.ryOrigin.z);
float ty = -(Dot(nn, ryv) + d) / Dot(nn, ray.ryDirection);
if (isnan(ty)) goto fail;
Point py = ray.ryOrigin + ty * ray.ryDirection;
dpdx = px - p;
dpdy = py - p;
// Compute $(u,v)$ offsets at auxiliary points
// Initialize _A_, _Bx_, and _By_ matrices for offset computation
float A[2][2], Bx[2], By[2];
int axes[2];
if (fabsf(nn.x) > fabsf(nn.y) && fabsf(nn.x) > fabsf(nn.z)) {
axes[0] = 1; axes[1] = 2;
}
else if (fabsf(nn.y) > fabsf(nn.z)) {
axes[0] = 0; axes[1] = 2;
}
else {
axes[0] = 0; axes[1] = 1;
}
// Initialize matrices for chosen projection plane
A[0][0] = dpdu[axes[0]];
A[0][1] = dpdv[axes[0]];
A[1][0] = dpdu[axes[1]];
A[1][1] = dpdv[axes[1]];
Bx[0] = px[axes[0]] - p[axes[0]];
Bx[1] = px[axes[1]] - p[axes[1]];
By[0] = py[axes[0]] - p[axes[0]];
By[1] = py[axes[1]] - p[axes[1]];
if (!SolveLinearSystem2x2(A, Bx, &dudx, &dvdx)) {
dudx = 0.; dvdx = 0.;
}
if (!SolveLinearSystem2x2(A, By, &dudy, &dvdy)) {
dudy = 0.; dvdy = 0.;
}
}
else {
fail:
dudx = dvdx = 0.;
dudy = dvdy = 0.;
dpdx = dpdy = Vector(0,0,0);
}
}
void SMDImporter::CreateAnimationSource()
{
XSI::ActionSource actionSource;
float animStart = 9999;
float animEnd = -9999;
XSI::CString animatedObjects;
for (int c=0;c<m_pNodes.GetUsed();c++)
{
SMDNode* node = m_pNodes[c];
if ( node->m_pKeys.GetUsed() > 1 )
{
if ( !actionSource.IsValid() )
{
LPWSTR l_wszActionName;
DSA2W(&l_wszActionName,m_szActionName);
actionSource = m_pModel.AddActionSource( l_wszActionName );
}
XSI::Parameter x = node->m_x3d.GetParameters().GetItem( L"posx" );
XSI::Parameter y = node->m_x3d.GetParameters().GetItem( L"posy" );
XSI::Parameter z = node->m_x3d.GetParameters().GetItem( L"posz" );
XSI::Parameter rx = node->m_x3d.GetParameters().GetItem( L"rotx" );
XSI::Parameter ry = node->m_x3d.GetParameters().GetItem( L"roty" );
XSI::Parameter rz = node->m_x3d.GetParameters().GetItem( L"rotz" );
node->m_fOldX = x.GetValue();
node->m_fOldY = y.GetValue();
node->m_fOldZ = z.GetValue();
node->m_fOldRX = rx.GetValue();
node->m_fOldRY = ry.GetValue();
node->m_fOldRZ = rz.GetValue();
XSI::FCurve fcrvx;
x.AddFCurve( XSI::siStandardFCurve, fcrvx );
XSI::FCurve fcrvy;
y.AddFCurve( XSI::siStandardFCurve, fcrvy );
XSI::FCurve fcrvz;
z.AddFCurve( XSI::siStandardFCurve, fcrvz );
XSI::FCurve fcrvrx;
rx.AddFCurve( XSI::siStandardFCurve, fcrvrx );
XSI::FCurve fcrvry;
ry.AddFCurve( XSI::siStandardFCurve, fcrvry );
XSI::FCurve fcrvrz;
rz.AddFCurve( XSI::siStandardFCurve, fcrvrz );
XSI::CTimeArray time(node->m_pKeys.GetUsed());
XSI::CValueArray xv(node->m_pKeys.GetUsed());
XSI::CValueArray yv(node->m_pKeys.GetUsed());
XSI::CValueArray zv(node->m_pKeys.GetUsed());
XSI::CValueArray rxv(node->m_pKeys.GetUsed());
XSI::CValueArray ryv(node->m_pKeys.GetUsed());
XSI::CValueArray rzv(node->m_pKeys.GetUsed());
if ( node->m_pParent ==NULL )
{
for (int k=0;k<node->m_pKeys.GetUsed();k++)
{
if ( node->GetKey(k)->m_fTime < animStart )
{
animStart = node->GetKey(k)->m_fTime;
}
if ( node->GetKey(k)->m_fTime > animEnd )
{
animEnd = node->GetKey(k)->m_fTime;
}
XSI::MATH::CTransformation xfo1;
XSI::MATH::CTransformation xfo2;
xfo1.SetRotationFromXYZAnglesValues ( node->GetKey(k)->m_vRotation.GetX(), node->GetKey(k)->m_vRotation.GetY(), node->GetKey(k)->m_vRotation.GetZ() );
xfo1.SetTranslationFromValues ( node->GetKey(k)->m_vPosition.GetX(), node->GetKey(k)->m_vPosition.GetY(), node->GetKey(k)->m_vPosition.GetZ() );
xfo2.SetRotationFromXYZAnglesValues ( -1.570796, 0.0, 0.0 );
xfo1.MulInPlace(xfo2);
double dx,dy,dz;
double drx, dry, drz;
xfo1.GetTranslationValues ( dx, dy, dz);
xfo1.GetRotationFromXYZAnglesValues(drx, dry, drz);
time[k] = k;
xv[k] = dx;
yv[k] = dy;
zv[k] = dz;
rxv[k] = drx * 57.29577951308232286465;
ryv[k] = dry * 57.29577951308232286465;
rzv[k] = drz * 57.29577951308232286465;
}
} else {
for (int k=0;k<node->m_pKeys.GetUsed();k++)
{
if ( node->GetKey(k)->m_fTime < animStart )
{
animStart = node->GetKey(k)->m_fTime;
}
if ( node->GetKey(k)->m_fTime > animEnd )
{
animEnd = node->GetKey(k)->m_fTime;
}
time[k] = k;
xv[k] = node->GetKey(k)->m_vPosition.GetX();
yv[k] = node->GetKey(k)->m_vPosition.GetY();
zv[k] = node->GetKey(k)->m_vPosition.GetZ();
rxv[k] = node->GetKey(k)->m_vRotation.GetX() * 57.29577951308232286465;
ryv[k] = node->GetKey(k)->m_vRotation.GetY() * 57.29577951308232286465;
rzv[k] = node->GetKey(k)->m_vRotation.GetZ() * 57.29577951308232286465;
}
}
fcrvx.SetKeys ( time, xv );
fcrvy.SetKeys ( time, yv );
fcrvz.SetKeys ( time, zv );
fcrvrx.SetKeys ( time, rxv );
fcrvry.SetKeys ( time, ryv );
fcrvrz.SetKeys ( time, rzv );
LPWSTR l_wszModelName;
DSA2W(&l_wszModelName,FixName(node->m_szName));
XSI::CString cname = l_wszModelName;
actionSource.AddSourceItem ( cname + L".kine.local.posx", fcrvx, true );
actionSource.AddSourceItem ( cname + L".kine.local.posy", fcrvy, true );
actionSource.AddSourceItem ( cname + L".kine.local.posz", fcrvz, true );
actionSource.AddSourceItem ( cname + L".kine.local.rotx", fcrvrx, true );
actionSource.AddSourceItem ( cname + L".kine.local.roty", fcrvry, true );
actionSource.AddSourceItem ( cname + L".kine.local.rotz", fcrvrz, true );
// build up the string list of objects that we want to remove animation from
if (animatedObjects.IsEmpty() == false) {
animatedObjects += L", ";
}
animatedObjects += node->m_x3d.GetFullName();
}
}
if ( actionSource.IsValid() )
{
actionSource.PutParameterValue(L"FrameStart", (double)animStart);
actionSource.PutParameterValue(L"FrameEnd", (double)animEnd);
}
// remove animation on all objects that were imported
// and animated
if (animatedObjects.IsEmpty() == false) {
XSI::Application app;
XSI::CValue out;
XSI::CValueArray args(4);
args[0] = animatedObjects;
args[1] = XSI::CValue();
args[2] = (long)XSI::siBranch;
args[3] = (long)(XSI::siFCurveSource);
app.ExecuteCommand(L"RemoveAllAnimation", args, out);
}
}
