I need to morph two given images of different size:
smallimage.jpg (640x480 pixels at 72dpi) (no alpha channel)
bigimage.jpg (1024x768pixels at 72dpi) (no alpha channel)
I need to start the morph with smallimage.jpg
on top and at the center of bigimage.jpg
the morph has to happen in 8 frames, at the end, in frame 8,
bigimage.jpg will be seen and smallimage.jpg will have disappeared.
I'm near from getting the correct effect, but still not quite there yet,
I get a black border on the four sides of the smallimage.jpg
instead of a transparent border; so that the background image that is
the bigimage.jpg can't be seen correctly.
This I do not want, I want smallimage.jpg to mantain it's smaller size
on center of bigimage.jpg and it's four border sides to be
transparent, and have it
morph and disappear in 8 frames, so it looks something like this:
Frame 1
--------------------------------------------------
| bigimage.jpg |
| |
| |
| -------------------------- |
| | smallimage.jpg | |
| | | |
| | covers this | |
| | part of | |
| | bigimage.jpg | |
| -------------------------- |
| |
| |
| |
--------------------------------------------------
.
.
.
.
Frame 8
--------------------------------------------------
| bigimage.jpg |
| |
| |
| |
| |
| |
| smallimage.jpg |
| has |
| disappeared |
| |
| |
| |
| |
--------------------------------------------------
This is the code I have, I would appreciate help:
#! /usr/local/bin/ruby -w
require 'RMagick'
include Magick
begin
img1 = Image.read("smallimage.jpg").first
rescue Magick::ImageMagickError
puts "ERROR: " + $! + "\n"
puts "#{$0}: ImageMagickError - #{$!}"
end
begin
img2 = Image.read("bigimage.jpg").first
rescue Magick::ImageMagickError
puts "ERROR: " + $! + "\n"
puts "#{$0}: ImageMagickError - #{$!}"
end
bigmask = Magick::Image.new(img2.columns, img2.rows)
{ self.background_color = "black" }
bigmask.matte = false
smallmask = Magick::Image.new(img1.columns, img1.rows)
smallmask.matte = false
maskok = Magick::Image.new(img2.columns, img2.rows)
{ self.background_color = "black" }
maskok.matte = true
maskok = bigmask.composite(smallmask, CenterGravity, OverCompositeOp)
imagewmask = Magick::Image.new(img2.columns, img2.rows)
imagewmask.matte = true
imagewmask = imagewmask.composite(img1, CenterGravity,
OverCompositeOp)
imagewmask = imagewmask.composite(maskok, CenterGravity,
CopyOpacityCompositeOp)
img1 = imagewmask
images = Magick::ImageList.new
images.push(img1)
images.push(img2)
morph = images.morph 8
morph.delay = 12
morph.iterations = 3600
morph.write "morphedimage.gif"
GC.start
exit
--------------------------
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