   Not change object's size when zooming in and out the camera
  Hi guys,I am doing a sample in managed DirectX written in C#. I have a question: Is it possible to change some objects' size (bigger and smaller) and NOT change some other objects' size at once when zooming in and out the camera? I want to do this because I want to keep the three arrows (which are used to move an object along the X, Y, Z axis) from changing their sizes when zooming the camera.I saw this in Blender but i don't know how to do it. Is it involved in setting the projection matrix?. If it is possible, can you give a some code for this. Sorry for my English. Thanks.   
Quote:Original post by randomuser9999Is it involved in setting the projection matrix?. If it is possible, can you give a some code for this. Sorry for my English. Thanks.Yup, you need to set an orthographic projection matrix. I don't know about C#, but the C++ function is called D3DXMatrixOrthoLH().And don't worry about your English, there's plenty of native English speakers on this forum who type worse English than you :P   ;  Evil Steve, thanks for your instant reply, i can read C++ code too. Could you give me a little more detail on setting the D3DXMatrixOrthoLH() method.Which parameter should i consider ?I've just had a quick search on this :http://msdn.microsoft.com/en-us/library/bb204940(VS.85).aspxThanks again   ;  Hi,this was exactly the same problem:http://www.gamedev.net/community/forums/topic.asp?topic_id=564537&whichpage=1&#3615826   