Irrlicht Engine

Hi,
I worked a LOT on 3d rotation independant on all axis, the only way is to use matrix with small steps rotations, you cannot call a final rotation because of gimbal lock.
look at this sample code from this thread:


http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=31866



//Update of ...

Thx a lot Bitplane,

I'll dig into this and let you know how it worked out.
I still don't understand why it works with matrices...
I'll burn a few neurons on this.

Regards,
Robert

Hi bitplane,
This is the code I'm using, as you see, on key press, I increase/decrease the rotation around corresponding axis, then, rotate it of current_rotation degrees by quaternion, the result is always that at 90 or 270 Y rotation, I can not rotate around X axis. It would be solve if the order ...

1. you can make the cam child of the car node at an Z offset, for behind.

2.ONce you have a turning angle(steering is turned to x degrees).
just had a rotation amount to your car every frame. Don't forget to make it time lapse depandant. to make smooth, even movement.

3. Take a look at JP wrapper ...

Your question is not stupid, in fact, I looked in yhe class definition and I really don't understand how you get this bad result.
There is not a single font size parameter...

Have you tried to change the alignment parameters ?

Regards,
Robert.

Hi,
Dark, I'm already using quaternions, it don't eliminate this problem,
cos when the rotation have to be done in X, it is done first,
then Y rot is done, cancelling the X rotation.
Quaternions only prevents mix-up of axis passed the 90 deg.

Vitek, how else then setrotation can I change ...

Hi all,
I have been trying to make a apollo like sim.
I realize that the order of rotation being x,y,z. All rotation made on the X axis get totally cancelled by a Y rotation at 90 or 270, rotation possibility increase toward 0 and 180.

Try to make a node rotate on X axis when there is a 90 rotation ...

Hi,
I think you have to modify the render routine of every node type you want to cast shadow from, in the animatedscenenode source the render routine tests for the shadow scene node so it gets render. regards,
robert

Hi all Irrlichtians,
first of, a happy new year to all.
I am using a camera_parent ( to move a ship) wich is not the active one nor receiver enable, I move and rotate it myself using quaternion, it works fine because when I make it active after a tranformation I see it has moved. But the child (ship ...

Hi,
Not sure but I think it could be that the boundingbox is axis aligned:


//! set user axis aligned bounding box
/** \param box New bounding box to use for the mesh. */
virtual void setBoundingBox( const core::aabbox3df& box) = 0;

From Imesh type declaration. So if your square object is ...

Hi wolfe,
I made a shield effect for my game Nostalgia, source is available,
I rotate the shield at random, but you just can put a collision detection on the sphere and rotate the shield accordingly.
my game is here: http://game3d.easycdholder.com/5.html
Look at it and if you have questions...comme ...

Thx for the replies and procision.
Searching on web, i found that those modification (sprint_f, sopen_f,etc) were propose by M$ to iso commitee in 2005, but not implemented in other compilers yet. The fix is thru redefining the function with preprocessor commands, wich I am not to familiar with.

ex ...

Thx for reply JP,
As I said in my edit I had to correct the path and files inclusion.
Some points in import msvc project in CB don't work.
But i had other issues compiling with CB.
Compiler don't recognize sprintf_s and other new functions.
I tried to update my mingw with no effect.
I rewrite some ...

Hi all,
EDIT:
A BUG IN IMPORT MSVC PROJECT,
WENT THRU BY HAND TO CORRECT PATH TO INCLUDE FILES
I starting (well trying to ) to work with irrphysic, I mad a project out of the hight field as a start, include all form irrlicht, irrphysic and nvidia sdk, lib from the 3 also.
Usually I get around with ...

Hi all irrlichtians,

I have rebuild the IrrNewton dll with version 1.4.2 of Irrlicht and version 1.53 of Newton. I tested it with first example of package.

You can download it here:

http://game3d.easycdholder.com/snippet.html

I went thru all corrections and adjustments for a clean build. took ...