Thanks. I will play with that

Wojtek

Thank you for your help once again. It works of course

There is a screenshot:

Hello,

Is it possible to add additional texture to loaded 3ds object that already has some textures?

I see that there is a public void setTexture(TextureInfo tInf) method, but it replaces all existing textures that are associated to the object and I do not see any methods that will be able to return texture list that is already assigned to object.

What I want to do is to add an additional texture that will be used as envmap (just like in viper example http://www.jpct.net/forum2/index.php/topic,988.0.html).

Thanks,
Wojtek

Great, it works with that parameter Thank you for help.

By the way, what that parameter means?

Thanks,
Wojtek

I'm not sure...i've never used a GLCanvas in a fullscreen window myself. Maybe you want to try the jogl-option instead to see, if this works better. More information about this can be found here: http://www.jpct.net/wiki/index.php/The_different_renderers#JOGL_support. It requires Jogl 1.1, not the 2.0beta stuff.

Unfortunately it does not seem to work as well

Thank you both for quick help

First I have tried the solution presented by Egon (Scene Rotation topic: http://www.jpct.net/forum2/index.php/topic,977.0.html)
and it works even better than I assumed

There is a code that I used to for testing:
public class CameraPosition
{
    private float distance = 5;

    public void rotate(Camera cam, double x, double y)
    {
SimpleVector line = new SimpleVector(x, 0, y);
Matrix m = line.normalize().getRotationMatrix();
m.rotateAxis(m.getXAxis(), (float) -Math.PI / 2f);

SimpleVector shift = moveCameraToZeroPosition(cam);
cam.rotateAxis(m.invert3x3().getXAxis(), line.length() / 200f);
restoreCameraPosition(cam, shift);
    }

    private void restoreCameraPosition(Camera cam, SimpleVector shift)
    {
cam.moveCamera(Camera.CAMERA_MOVEOUT, distance);
shift.add(cam.getPosition());
cam.setPosition(shift);
    }

    private SimpleVector moveCameraToZeroPosition(Camera cam)
    {
cam.moveCamera(Camera.CAMERA_MOVEIN, distance);
SimpleVector shift = cam.getPosition();
cam.setPosition(new SimpleVector(0, 0, 0));
return shift;
    }

    public void zoom(Camera cam, double delta)
    {
distance -= delta;
cam.moveCamera(Camera.CAMERA_MOVEIN, (float) delta);
    }

    public void updateCamera(Object3D object, Camera cam)
    {
if (cam.getPosition().length() == 0)
    initCamera(object, cam);
moveCameraToZeroPosition(cam);
restoreCameraPosition(cam, object.getTransformedCenter());
    }

    private void initCamera(Object3D object, Camera cam)
    {
SimpleVector vec = new SimpleVector(0, 5, 5);
vec.add(object.getTransformedCenter());
cam.setPosition(vec);
cam.lookAt(object.getTransformedCenter());
    }
}

I have added two modifications to the code:
1. initCamera() if camera position is [0,0,0] - this helps me to set correct starting point for camera
2. Apart from moving camera using distance, moveCameraToZeroPosition() and restoreCameraPosition() methods resets the camera position to [0,0,0] (and returns the shift vector) and applies shift vector when camera position is restored. Having that, camera is able to follow moving objects.


I have not checked the second solution because the first one is ok for me and it also allows ship to rotate independently from camera.

Hello,

Recently I had a similar problem - how to create a textured world for my space game. I have read that thread, however what I needed was a little bit different than Mystara. I wanted to have a starfield that is not moving when starship is travelling, however it needs to look different if camera angle is changed.

I have created a solution that may be helpful for others too.

So what I did was to create a very big sphere (lets say with radius=1000), textured it and put camera inside it.

My game is working the way, that camera is always looking at player's ship from some specified distance (so in fact it is being moved with the spaceship during the game). Having that implemented I continueusly update the sphere center position to be the same as ship's one, so when ship is moving, the starfield looks the same from cameras perspective, however when camera angle is changed, it looks different.


I have uploaded an example with textured sphere and camera located in the sphere center. It is possible to use arrows to change camera angles and see how world texture is changing.
The example files can be downloaded from: working example with sources

Thanks,
Wojtek