Real-Time Physics Simulation Forum 2010-03-17T10:11:53+00:00 https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/4855 2010-03-17T10:11:53+00:00 2010-03-17T10:11:53+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=17895#p17895 <![CDATA[position prediction]]>
So i am trying to solve a future position of a ball(sphere).
I went through the bullets source code and try to solve for new position
I am assuming there is no collusion with any objects
The only force I have is the gravity and a force which is added to the current velocity
( i used applyCentralImpulse for pushing this ball or kicking to be more accurate)
I dont really care about y axis. (gravity applies to y)

by the time I run this code the ball has some linearavelocity.

I am not worried orientation, well it is a ball.

Here is the code:

Code: 

// I tried to get the totalForce() but it does not have the gravity included in it// total force always returns a zero vectorbtVector3 gravityForce = btVector3(0,-10.0f,0) * btScalar(1.0)/m_pBody->getInvMass()* m_pBody->getLinearFactor() * time;btVector3  forceAddedVel = m_pBody->getLinearVelocity()+ gravityForce;// The new damping functionsbtVector3  damped=forceAddedVel * btPow(btScalar(1.0) - m_pBody->getLinearDamping(),time); //the predicted position is the balls position plus these two termsFuturePosition=getPosition() + (damped) * time;
Is this the right way to do this. Any help would be great.

Statistics: Posted by ebingol — Wed Mar 17, 2010 10:11 am

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