module

CrImage::Operation::Rotate

Rotates an image

Taking sample image:

Woman with black turtleneck and white background 
image.rotate(45)
image.rotate(45, pad: true)
Rotated image by 45 degrees Rotated image by 45 degrees, padded to show corners

Instance methods

rotate(degrees : Float64, *, center_x : Int32 = width // 2, center_y : Int32 = height // 2, radius : Int32 = -1, pad : Bool = false, pad_type : EdgePolicy = EdgePolicy::Black) : self

Rotates an image by degrees

center_x and center_y represents the point in the image that will be rotated around. Defaults to image center. radius can be used to only rotate a smaller circular region in the image. Can't be used with pad pad can be used to pad out the image so that corners that would normally be occluded, are visible. pad_type behaves the same as pad_type in Pad

Source
rotate!(degrees : Float64, *, center_x : Int32 = width // 2, center_y : Int32 = height // 2, radius : Int32 = -1, pad : Bool = false, pad_type : EdgePolicy = EdgePolicy::Black) : self

Rotates an image by degrees. Modifies self

center_x and center_y represents the point in the image that will be rotated around. Defaults to image center. radius can be used to only rotate a smaller circular region in the image. Can't be used with pad pad can be used to pad out the image so that corners that would normally be occluded, are visible. pad_type behaves the same as pad_type in Pad

Source