Hi Steven,
Maybe, i'm not clear, I want to keep the current yaw angle, and change
pitch and roll by the terrain normal.
So i use getRotate to find my previous yaw angle, like you Steven, i
thinks thats not the solution. Maybe i need to store this yaw angle in
custom data.
Hi JP i use osg 2.8 an getRotate seem to returns angle and vector.
Antonin Linares
Steven Saunderson a écrit :
Hi Antonin,
I may be getting way out of my depth here but when I saw your problem this
morning it looked very similar to a problem I had just recently.
Looking at your original post :
Antonin Linares wrote:
//get height and normal under the tank
osg::Vec3f pos =
lsi->getFirstIntersection()->getWorldIntersectionPoint();
osg::Vec3f normal =
lsi->getFirstIntersection()->getWorldIntersectionNormal();
//Set up height
pat->setPosition(pos);
All looks fine so far
Antonin Linares wrote:
//Set up alignment with terrain
float rotation;
osg::Vec3f origine;
pat->getAtitude().getRotate(rotation, origine);
if((origine*normal) != 0){
osg::Quat corect;
corect.makeRotation(origine, normal);
pat->setAtitude(corect);
I don't understand why you have the getAtitude() here. It will return a quat
and the .getRotate will convert the value into an angle and vector. But what
quat value is it converting ?
What happens if you always calculate "corect" as you are doing and then apply
"rot" in the setAtitude call (i.e. pat->setAtitude (rot * corect) ) ?
//Set up alignment with terrain
float rotation;
osg::Vec3f origine (0,0,1);
osg::Quat corect;
corect.makeRotation(origine, normal);
// I'm not sure where you get rotation from ??????
osg::Quat rot(rotation, origine);
pat->setAtitude(rot*corect);
I hope this helps or entices someone more knowledgeable to assist here.
------------------------
-- Steven Saunderson
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=8598#8598
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