6 def resize(width, height)
7 create_core_image_context(width, height)
9 scale_x, scale_y = scale(width, height)
11 @original.affine_clamp :inputTransform => OSX::NSAffineTransform.transform do |clamped|
12 clamped.lanczos_scale_transform :inputScale => scale_x > scale_y ? scale_x : scale_y, :inputAspectRatio => scale_x / scale_y do |scaled|
13 scaled.crop :inputRectangle => vector(0, 0, width, height) do |cropped|
20 def thumbnail(width, height)
21 create_core_image_context(width, height)
23 transform = OSX::NSAffineTransform.transform
24 transform.scaleXBy_yBy *scale(width, height)
26 @original.affine_transform :inputTransform => transform do |scaled|
32 original_size = @original.extent.size
33 scale = size.to_f / (original_size.width > original_size.height ? original_size.width : original_size.height)
34 resize (original_size.width * scale).to_i, (original_size.height * scale).to_i
39 def scale(width, height)
40 original_size = @original.extent.size
41 return width.to_f / original_size.width.to_f, height.to_f / original_size.height.to_f