Forward, before any rotation, obviously, is +y. But the ship's rotation around z is precisely what shouldn't change in the new matrix.

Thanks a lot for the help. My world is on an x/y plane, with +z going up. And about the m.set methods, would I afterwards just add m.invert()?

And Egon, I wouldn't know what to search for. I found this: http://www.jpct.net/forum2/index.php/topic,1191.0.html, but I'm not sure I get it or whether it's what I'm looking for. I'm sure I sound like an idiot but I really only started taking a course on 3d graphics programming (it was c opengl). I loved, but I didn't get to finish it and I'm sort of new to this matrix stuff (first one I used was yours on the racer).

I don't care about the distance between the ship and the plane, I just want the ship to fly parallel to the plane itself (which is the ground). And thanks for the help.

As for getting them, wouldn't I just use the Matrix.get_Axis() methods? What about setting them?

So, Egon, is it possible to get a Matrix with the z rotation of one object and the x and y rotations of another?

I see your point, Paul (may I safely assume it's not your code that's writing me? :-), but what I meant is that I need to reset the ship's rotation on two axis only. In this case, I need to reset the ship's x and y, since I'm once again working on the x/y plane and all I want is for the ship to level (as opposed to leveling and facing in a different direction relative to the plane).

Which brings me to a suggestion, Egon: since you already implemented the config.oldStyle3DS boolean, why not change the new style loader to rotate all the models into jpct's x/z plane? And everyone who, like me, has worked with the x/y will just set the boolean to true whereas everyone else will no longer have to worry about this issue.

OK. Here's another question: what if I wanted to align only two out of the three axis? How could I get a Matrix whose z is the ship's rotation matrix's z and whose x and y are the plane's? I know I can get the axis with the get_Axis() methods, but there are no equivalent set() ones.

I flipped the matrices between plane and ship (lastRotation=ship.getRotationMatrix(), softMatrix=plane.getRotationMatrix()) after re-reading the documentation. It seems to work now, except that it's never finished in the ten iterations (if I call level() multiple times it eventually completes). How do I make it complete in 10 iterations?

I'm trying to achieve the equivalent of ship.align(plane) (leveling the ship) in multiple iterations. This is what I have. What I'm getting instead is the exact same thing as ship.align(plane): it aligns the ship to the plane in a single pass. Shouldn't lastRotation.interpolate(Matrix, Matrix, .1f) take care of only rotating 10%?


if (shipLeveling == 10) {
      lastRotation = plane.getRotationMatrix();
      shipLeveling = 0;
}

Matrix softMatrix = ship.getRotationMatrix();
lastRotation.interpolate(lastRotation, softMatrix, 0.1f);// interpolate between the matrices
Matrix matrix = new Matrix(lastRotation);
ship.setRotationMatrix(matrix);
shipLeveling++;


Yeah, I knew I didn't remember the Ascii perfectly. Thanks for your suggestion, I will do that.

Egon, the follow-up to my unanswered question: would it be possible to make a Object3D.compile(float lightMul)?

And yet another question (you're a very patient man!): World.getSize() is returning 14, but a loop that calls getObject(index) is returning every single reference as null (and jPCT prints out "Can't retrieve object #" for each). How come?

Cool, thank you. Here's a question about compiled objects: why do they use lightMul at 1.0 when the default lightMul is 10? Is there a reason for this decision (was it a decision or a necessity)? Because every time we choose to compile the objects (and I just ran into a performance issue that compile() solves nicely) we'll have to reconfigure all of our lights.

I sometimes lack the ability (physically, really) to fine-comb my own code. Now here's a brand-new question (!): what's the more efficient way to draw an animation on a plane than the one I'm doing (replacing the Texture instances on the fly)?

Jesus, I meant it to be 0. What an idiot I can be. Thanks a lot, pal.