module DynamicImage::ImageProcessor::Transform
Public Instance Methods
Source
# File lib/dynamic_image/image_processor/transform.rb, line 7 def crop(crop_size, crop_start) return self if crop_start == Vector2d(0, 0) && crop_size == size unless valid_crop?(crop_start, crop_size) raise DynamicImage::Errors::InvalidTransformation, "crop size is out of bounds" end each_frame do |frame| frame.crop(crop_start.x, crop_start.y, crop_size.x, crop_size.y) end end
Crops the image
Source
# File lib/dynamic_image/image_processor/transform.rb, line 21 def resize(new_size) new_size = Vector2d(new_size) apply image.thumbnail_image(new_size.x.to_i, height: new_size.y.to_i, crop: :none, size: :both) end
Resize the image to a new size.
Source
# File lib/dynamic_image/image_processor/transform.rb, line 30 def rotate(degrees) degrees = degrees.to_i % 360 return self if degrees.zero? if (degrees % 90).nonzero? raise DynamicImage::Errors::InvalidTransformation, "angle must be a multiple of 90 degrees" end each_frame { |frame| frame.rotate(degrees) } end
Rotates the image. The rotation must be a multiple of 90 degrees.
Private Instance Methods
Source
# File lib/dynamic_image/image_processor/transform.rb, line 44 def valid_crop?(crop_start, crop_size) bounds = crop_start + crop_size bounds.x <= size.x && bounds.y <= size.y end