twa625

06-01-2012, 12:27 PM

Hi,

Recently I started learning OpenGL and I have got myself both the superbible (the blue book) and the programming guide(the red book). The part where they describe the order for modeling transformation confuses me. In the red book, "viewing->viewing and modeling transformation->thinking about transformations", rotation and then translation has, strangely, the same result as translation and then rotation described in the blue book, "geometric transformations: pipeline->understanding transformations->modeling transformations".

Why is there discrepancy in these two books? Could anyone help explain a little? Do I miss something here?

All the best!

Recently I started learning OpenGL and I have got myself both the superbible (the blue book) and the programming guide(the red book). The part where they describe the order for modeling transformation confuses me. In the red book, "viewing->viewing and modeling transformation->thinking about transformations", rotation and then translation has, strangely, the same result as translation and then rotation described in the blue book, "geometric transformations: pipeline->understanding transformations->modeling transformations".

Why is there discrepancy in these two books? Could anyone help explain a little? Do I miss something here?

All the best!