BOOL bgAnimMax::CheckForAnimation(INode* pNode, BOOL& bPos, BOOL& bRot, BOOL& bScl)
{
AffineParts ap;
Point3 firstPos, firstRotAxis, firstScaleFactor;
Point3 rotAxis;
float firstRotAngle;
float rotAngle;
GetDecompAffine(m_Interval.Start(), pNode, &ap, &firstRotAxis, &firstRotAngle);
firstPos = ap.t;
firstScaleFactor = ap.k;
TimeValue start = m_Interval.Start() + GetTicksPerFrame();
TimeValue end = m_Interval.End();
bPos = bRot = bScl = FALSE;
for (TimeValue t = start; t <= end; t += m_iDeltaTick)
{
GetDecompAffine(t, pNode, &ap, &rotAxis, &rotAngle);
if (!bPos)
{
if (!EqualPoint3(ap.t, firstPos))
{
bPos = TRUE;
}
}
if (!bRot)
{
if (fabs(rotAngle - firstRotAngle) > ALMOST_ZERO)
{
bRot = TRUE;
}
else if (!EqualPoint3(rotAxis, firstRotAxis))
{
bRot = TRUE;
}
}
if (!bScl)
{
if (!EqualPoint3(ap.k, firstScaleFactor))
{
bScl = TRUE;
}
}
if (bPos && bRot && bScl)
break;
}
return bPos || bRot || bScl;
}
void AsciiExp::DumpPosSample(INode* node, int indentLevel)
{
TSTR indent = GetIndent(indentLevel);
_ftprintf(pStream, _T("%s\t\t%s {\n"), indent.data(), ID_POS_TRACK);
TimeValue start = ip->GetAnimRange().Start();
TimeValue end = ip->GetAnimRange().End();
TimeValue t;
int delta = GetTicksPerFrame() * GetKeyFrameStep();
Matrix3 tm;
AffineParts ap;
Point3 prevPos;
for (t=start; t<=end; t+=delta) {
tm = node->GetNodeTM(t) * Inverse(node->GetParentTM(t));
decomp_affine(tm, &ap);
Point3 pos = ap.t;
if (t!= start && EqualPoint3(pos, prevPos)) {
// Skip identical keys
continue;
}
prevPos = pos;
// Output the sample
_ftprintf(pStream, _T("%s\t\t\t%s %d\t%s\n"),
indent.data(),
ID_POS_SAMPLE,
t,
Format(pos));
}
_ftprintf(pStream, _T("%s\t\t}\n"), indent.data());
}
BOOL AsciiExp::CheckForAnimation(INode* node, BOOL& bPos, BOOL& bRot, BOOL& bScale)
{
TimeValue start = ip->GetAnimRange().Start();
TimeValue end = ip->GetAnimRange().End();
TimeValue t;
int delta = GetTicksPerFrame();
Matrix3 tm;
AffineParts ap;
Point3 firstPos;
float rotAngle, firstRotAngle = 0.0f;
Point3 rotAxis, firstRotAxis;
Point3 firstScaleFactor;
bPos = bRot = bScale = FALSE;
for (t=start; t<=end; t+=delta) {
tm = node->GetNodeTM(t) * Inverse(node->GetParentTM(t));
decomp_affine(tm, &ap);
AngAxisFromQ(ap.q, &rotAngle, rotAxis);
if (t != start) {
if (!bPos) {
if (!EqualPoint3(ap.t, firstPos)) {
bPos = TRUE;
}
}
// MAX 2.x:
// We examine the rotation angle to see if the rotation component
// has changed.
// Although not entierly true, it should work.
// It is rare that the rotation axis is animated without
// the rotation angle being somewhat affected.
// MAX 3.x:
// The above did not work, I have a repro scene that doesn't export a rotation track
// because of this. I fixed it to also compare the axis.
if (!bRot) {
if (fabs(rotAngle - firstRotAngle) > ALMOST_ZERO) {
bRot = TRUE;
}
else if (!EqualPoint3(rotAxis, firstRotAxis)) {
bRot = TRUE;
}
}
if (!bScale) {
if (!EqualPoint3(ap.k, firstScaleFactor)) {
bScale = TRUE;
}
}
}
else {
firstPos = ap.t;
firstRotAngle = rotAngle;
firstRotAxis = rotAxis;
firstScaleFactor = ap.k;
}
// No need to continue looping if all components are animated
if (bPos && bRot && bScale)
break;
}
return bPos || bRot || bScale;
}
