Get coordinates of the point at the corner of view control

[JohnHon]

Dear all,

Are there any methods that we can get the coordinates of the four corners of the view control?

Thanks,

John

[xiaodong_liang]

Hi,

do you mean the coordinates in the main form? ViewControl.Left, Right. etc should tell these values.

if you refer to the coordinates in the model, you may need to check the info of the current viewpoint.

[JohnHon]

Dear Xiaodong,

Thanks for your reply.

I am refering to the model coordinate.

However, I cannot find those information from the current viewpoint.

Could you give me some hints?

Thanks,

John

[xiaodong_liang]

Hi John,

you may have to calculate with the properties: AspectRatio , HeightField yourself in perceptive or orthographic camera. sorry i have not an existing answer on it. Please take a look some articles of camera of graphics if there is any algorithm.

[JohnHon]

Hi Xiaodong,

I see. I will try to search it. Hope that it is not difficult for me to understand it.

Thanks,

John

[xiaodong_liang]

I did no try, but perhaps you could take advantage of InputPlugin to help you to get the values, i.e. assume you get the display coordinates of the corner, get their WCS by PickItemResult.Point

http://adndevblog.typepad.com/aec/2013/05/navisworks-2014-api-new-feature-inputplugin.html