how to make a smooth rotation?

[easy163]

Hi all, how to make a smooth turn node in the direction of the other node? For example, every second, rotate the node 10 degrees until the node will not be turned completely to the desired point?
Now there is such a code, it instantly turns the node to the point.

Code: Select all

 
    void rotationToNode(IAnimatedMeshSceneNode *node, vector3df toNode, f32 speed) 
    {
 
        vector3df nodePosition = node->getPosition();
        vector3df rotationNeed;
 
        float X = nodePosition.X - toNode.X;
        float Y = nodePosition.Z - toNode.Z;
        rotationNeed.Y = (f32)((atan2(X, Y) * 180 / PI) + 180);
 
        node->setRotation(rotationNeed);
 
    }
 

How to change it? Can you share the code?

[smso]

You may be interested in this:

http://irrlicht.sourceforge.net/forum/v ... =9&t=47304

Regards,
smso

[easy163]

And are there other ways?

[easy163]

need a normal rotation with constant speed, is there one?

[CuteAlien]

ISceneManager::createRotationAnimator might do what you want.

Otherwise you need to save the your full rotation vector (rotationNeed), rotation time (how long it should take) and the last time step (init with time on first call, update on each update). Then you need an update function which is called each frame. It increases the rotation by full_rotation * time_for_last_update/rotation_time. You can derive from Irrlicht's irr::scene::ISceneNodeAnimator and add it to your node. That will call the animatedNode function of your derived class each frame. Or you can use any custom updater class/function system which you write yourself.

[jiangcaiyang]

Although I am a beginner for Irrlicht, I think you need a sphere interpolation solution.

[mongoose7]

Not if the axis remains fixed.