27 December 2010

Kevin's back today. Zac and I updated him on what we have done while he was away, and clarified some things along the way. Turns out that it would be tough for us to put in the dicom images right now at this stage. Hence, we were to put that on hold till our application is almost near the end.

Went back to 3DS Max today to create some 3D scenes for us to use in testing. Got that part up pretty quickly. All I had to do was to recall the necessary steps required to create the scene and export them into POD files. I was supposed to work on implementing labels to label the different nodes in the models for our application. However, I found out that the translation was not working for the iPad.

Hence, I went back to fix up the pan gesture for translation. Things were working well for the iPhone application, but on the iPad, the translation was a little off. Spent some more time studying the sample application, and I realized that there was this method to do the conversion view points to the eaglLayer points. The iPad view's size was larger than that of the eaglLayer that we created, hence, I figured that this would solve the problem.

- (CGPoint)convertPointFromViewToSurface:(CGPoint)point

{

CGRect rect = [self bounds];

return CGPointMake((point.x - rect.origin.x) / rect.size.width * _size.width, (point.y - rect.origin.y) / rect.size.height * _size.height);

}

- (CGRect)convertRectFromViewToSurface:(CGRect)rect

{

CGRect bounds = [self bounds];

return CGRectMake((rect.origin.x - bounds.origin.x) / bounds.size.width * _size.width, (rect.origin.y - bounds.origin.y) / bounds.size.height * _size.height, rect.size.width / bounds.size.width * _size.width, rect.size.height / bounds.size.height * _size.height);

}

Got this implemented and the translation became more accurate. There was no need for conversion in the iPhone application as the view's size is the same as the eaglLayer's size. It still was not perfect though. The translation for the heart models worked well, but not for the cylinders. I really wonder why...