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jPCT-AE - a 3d engine for Android => Support => Topic started by: Dharmaraj on September 23, 2013, 01:04:42 pm

Title: Object3D translate problem
Post by: Dharmaraj on September 23, 2013, 01:04:42 pm

how can i translate the object3D in jCPT-AE when i click on any position of mobile screen. go to the that position where i clicked in screen.

Title: Re: Object3D translate problem
Post by: EgonOlsen on September 23, 2013, 08:16:03 pm

You have to convert the 2d screen coordinate into a 3d world space coordinate and move the object to that position. For example by using this method: http://www.jpct.net/jpct-ae/doc/com/threed/jpct/Interact2D.html#reproject2D3DWS(com.threed.jpct.Camera, com.threed.jpct.FrameBuffer, int, int, float) (http://www.jpct.net/jpct-ae/doc/com/threed/jpct/Interact2D.html#reproject2D3DWS(com.threed.jpct.Camera, com.threed.jpct.FrameBuffer, int, int, float)).

Keep in mind that a conversion from 2d to 3d requires one fixed coordinate in 3d, which is usually z. That's why the method takes a z coordinate in 3d in addition to the screen coordinates.

Title: Re: Object3D translate problem
Post by: Dharmaraj on September 24, 2013, 11:30:11 am

thank you so much.