bool TbsAnimObj::GetDecompAffine( TimeValue t, INode* pNode, AffineParts* ap, Point3* rotAxis, float* rotAngle )
{
Matrix3 tm = pNode->GetNodeTM(t) * Inverse(pNode->GetParentTM(t));
decomp_affine(tm, ap);
Point3 vRotAxis;
float fRotAngle;
if( rotAngle != NULL && rotAngle != NULL )
{
AngAxisFromQ(ap->q, rotAngle, *rotAxis);
}
return true;
}
bool bgAnimMax::GetDecompAffine(TimeValue time, INode* pNode, AffineParts* pAP, Point3* pRotAxis, float* pRotAngle)
{
Matrix3 tm = pNode->GetNodeTM(time) * Inverse(pNode->GetParentTM(time));
decomp_affine(tm, pAP);
Point3 vRotAxis;
float fRotAngle;
if (pRotAngle != NULL && pRotAngle != NULL)
{
AngAxisFromQ(pAP->q, pRotAngle, *pRotAxis);
}
return true;
}
/**
* This method will check if there is any animation connected to the node.
* It will run from start to end of animation range and if the position,
* rotation or scale has been changed during this, it will return true.
*/
BOOL OSGExp::hasAnimation(INode* node){
TimeValue start = _ip->GetAnimRange().Start();
TimeValue end = _ip->GetAnimRange().End();
TimeValue t;
int delta = GetTicksPerFrame();
Matrix3 tm;
AffineParts ap;
Point3 firstPos;
float rotAngle, firstRotAngle;
Point3 rotAxis, firstRotAxis;
Point3 firstScaleFactor;
//return TRUE;
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 any point, rotation or scale in the t'th frame has
// changes from the start frame then we have an animation.
if (t != start){
if(!Util::isPoint3Equal(ap.t, firstPos) ||
!Util::isPoint3Equal(rotAxis, firstRotAxis) ||
fabs(rotAngle - firstRotAngle) > ALMOST_ZERO ||
!Util::isPoint3Equal(ap.k, firstScaleFactor)){
return TRUE;
}
}
else {
firstPos = ap.t;
firstRotAngle = rotAngle;
firstRotAxis = rotAxis;
firstScaleFactor = ap.k;
}
}
return FALSE;
}
/**
* This method will sample the node at each frame to get any possible change
* of position, rotation and scaling. The posible changes is inserted into an
* OSG AnimationPath and returned.
*/
osg::AnimationPath* OSGExp::sampleNode(INode* node){
// Create the animation path.
osg::AnimationPath* animationPath = new osg::AnimationPath();
animationPath->setLoopMode(osg::AnimationPath::LOOP);
TimeValue start = _ip->GetAnimRange().Start();
TimeValue end = _ip->GetAnimRange().End();
int val;
if (node->GetUserPropInt("startFrame",val))
start= val;
if (node->GetUserPropInt("endFrame",val))
end= val;
TimeValue t;
int delta = GetTicksPerFrame();
Matrix3 tm;
AffineParts ap;
for (t=start; t<=end; t+=delta) {
tm = node->GetNodeTM(t) * Inverse(node->GetParentTM(t));
decomp_affine(tm, &ap);
Point3 pos = ap.t;
Point3 sca = ap.k;
// Note: OSG wants absolute rotations
Quat rot = ap.q;
// Convert from Max's left-handed rotation to right-handed
float ang;
Point3 axis;
AngAxisFromQ(rot, &ang, axis);
ang = -ang;
rot = QFromAngAxis(ang, axis);
// Insert the sample point into animation path
addControlPoint(animationPath, (t/(float)TIME_TICKSPERSEC), pos, rot, sca);
}
return animationPath;
}
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;
}