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Topics - jkndmiththinda

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1
Support / collision detection
« on: March 20, 2012, 07:17:10 pm »
Hi
I am trying to do a collision detection using checkForCollisionEllipsoid. I managed to get a corrected vector upon detecting a collision through this method.

My question is, is it possible for me to get the correction in only X, Y directions excluding the Z axis? i.e. The corrected vector should not move in Z axis, I want all objects to be in the same plane.

Thanks for sharing this great engine again!

2
Support / Can't get the object dimensions correctly using the BoundingBox
« on: March 18, 2012, 07:15:49 am »
Hi,
I am trying to determine how much space an object takes in 2D using the following method. But it doesn't seem to return the correct value.

float[] BoundingBox = 3DOBJECT.getMesh().getBoundingBox();
SimpleVector SV3D, SV2D;

SV3D.set(BoundingBox[1], BoundingBox[3], BoundingBox[5]);

SV3D.matMul(3DOBJECT.getWorldTransformation());

SV2D = Interact2D.project3D2D(WORLDOBJECT.getCamera(), FRAMEBUFFER, SV3D).normalize();

I expected SV2D.x to have the correct 2D width as displayed on screen, but it doesn't seem to give that.

Thanks for sharing this great engine!

3
Support / Placing objects in the world
« on: March 07, 2012, 08:26:20 pm »
Hi I'm new to JPCT engine and find it great and very interesting. I need to create a screen with 3d icons and text captions and i want these icons to be spread evenly on the screen, regardless the screen size of the device. I used blitting to position the captions as desired. But i have trouble positioning the corresponding 3d icons, I don't understand how to correlate screen size with the object translation units. Could you please explain how to do this? Once again, thank you very much for sharing this great engine!

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