module StumpyResize

Defined in:

stumpy_resize.cr
stumpy_resize/bicubic.cr
stumpy_resize/bilinear.cr
stumpy_resize/crop.cr
stumpy_resize/gaussian_blur.cr
stumpy_resize/lanczos.cr
stumpy_resize/nearest_neighbor.cr
stumpy_resize/scale.cr

Constant Summary

DEFAULT_INTERPOLATION_METHOD = InterpolationMethod::Lanczos

VERSION = "1.3.1"

Class Method Summary

• .blur(image : Canvas, radius : Int32) : Canvas
• .crop(canvas : Canvas, start_x : Int32, start_y : Int32, end_x : Int32, end_y : Int32) : Canvas

  Crop function

• .lanczos_a : Int32

  adjust this up to improve quality

• .lanczos_a=(lanczos_a : Int32)

  adjust this up to improve quality

• .resize(image : Canvas, new_width : Int32, new_height : Int32, method : InterpolationMethod = DEFAULT_INTERPOLATION_METHOD) : Canvas
• .resize_bicubic(image : Canvas, new_image : Canvas) : Nil

  Cubic Convolution Algorithm

• .resize_bilinear(image : Canvas, new_image : Canvas) : Nil
• .resize_lanczos(image : Canvas, new_image : Canvas) : Nil
• .resize_nearest_neighbor(image : Canvas, new_image : Canvas) : Nil
• .scale_to_cover(canvas : Canvas, desired_width : Int32, desired_height : Int32, resize_method : InterpolationMethod = DEFAULT_INTERPOLATION_METHOD) : Canvas

  scales the original image so that it covers the desired dimensions while maintaining the original aspect ratio.

• .scale_to_fit(canvas : Canvas, desired_width : Int32, desired_height : Int32, resize_method : InterpolationMethod = DEFAULT_INTERPOLATION_METHOD) : Canvas

  scales the image to fit the desired view port, adding letterboxing or pillarboxing as required

Class Method Detail