• Apple Motion

  Motion + cameraMatrixAtTime

  Posted by Patric Logan on June 17, 2010 at 6:49 am

  Hello.
  At last I know how to get camera position from Motion thanks to fxplug:

  id 3dnow = [_apiManager apiForProtocol:@protocol(Fx3DAPI)];

  NSData* camData = [3dnow cameraMatrixAtTime:renderInfo.frame];

  double camMatrix [4][4];

  [camData getBytes:&camMatrix
  length:16 * sizeof (double)];

  NSString *string = [NSString stringWithFormat:
@"Camera position:\n\nX: %f\nY: %f\nZ: %f",
camMatrix [0][3],camMatrix [1][3], camMatrix [2][3]];


  Can anybody tell me how to get light position in motion? I don’t know what command gives me that possibility.
  Thanks!

  Patric Logan replied 15 years, 11 months ago 1 Member · 1 Reply
• 1 Reply

• 

  Patric Logan

  June 17, 2010 at 10:06 am

  id fx3DAPI 3dnow = [_apiManager apiForProtocol:@protocol(Fx3DAPI)];

  NSData* camData = [3dnow cameraMatrixAtTime:renderInfo.frame];

  double camMatrix [4][4];

  [camData getBytes:&camMatrix
  length:16 * sizeof (double)];

  NSString *string = [NSString stringWithFormat:
@"Camera position:\n\nX: %f\nY: %f\nZ: %f",
camMatrix [0][3],camMatrix [1][3], camMatrix [2][3]];
camMatrix [0][3],camMatrix [1][3], camMatrix [2][3]];

  p.s. fx3DAPI should be in angle bracket – code doesn’t allow me to do that and in last post it dissapeared

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