Rotate rectangle in deg.

[pravin]

hi all,

i want to rotate a rectangle without using ni vision toolkit only using simple

vi and using bounding rectangle so. can any one tell me how to rotate rectanglein degree

coz i'm new in vision.

reply

[Francois Normandin]

hi all,

i want to rotate a rectangle without using ni vision toolkit only using simple

vi and using bounding rectangle so. can any one tell me how to rotate rectanglein degree

coz i'm new in vision.

reply

Hi Pravin,

Check in the Mathematics/Geometry palette. There is a 2D rotation matrix VI. (2D Cartesian Coordinates Rotation.vi)

See this link for how it works.

[pravin]

Thanks for reply,

but i want to rotate the rectangle with formula like

,

such as left top , right top, right bottom, left bottom, left top with x y co-ordinates with various degree of rotation.

[Francois Normandin]

I think that's what the function does behind the scene. A rectangle is simply one case of any number of geometries you can make with this function's inputs.

NI Vision rotation algorithm is more complete because it will interpolate colours when the rotated pixel positions are not integers, but otherwise it's the same. The rotation matrix in 2D is exactly what you state above.

Rotation of points.vi