Convert vertical image into horizontal: RoR, RMagick

Convert vertical image into horizontal

Asked by: LL0rd

Hi,

I want to convert an Image from vertical format into horizontal. How can I do that? I tried it using RMagick with some quite funny results. You can find it in the Attachment to this posting.

As you can see, the position of the vertical image is quite in the center of the "large horizontal" image, but the image looks quite funny. How what do I have to change im my code?

def imgFormat
    pic = Magick::Image.from_blob(self.data)[0]
    if pic.rows > pic.columns
      new_width = pic.rows * 4/3.to_f
      img = Magick::Image.new(new_width,pic.rows) {
       self.background_color = 'red'
       }
       
       gc = Magick::Draw.new
       leftBound = (new_width - pic.columns) / 2
       gc.pattern('hat', 0, 0, pic.columns, pic.rows) {
           gc.composite(0, 0, 0, 0, pic)
       }
       gc.fill('hat')
       #gc.circle(pic.columns/2,pic.columns/2,pic.columns/2,0)
       
       gc.rectangle(leftBound,0,leftBound+pic.columns, pic.rows)
       
       gc.draw(img)
       
       img.format="JPEG"
       self.data = img.to_blob
       self.save
    end
  end

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Hi llord, I put a script in snippet code, write in php. I use some functions of gd library and others from imagick.
Is better you verify first if your server have installed imagick extension, if not the script don't work, and the solution is contact the support for they install imagick.
In my server work very well, like you can see in attach image.
Good luck.

Regards, JC

<?php
//obtain the image
$image = "P9167332.JPG";
 
//obtain the size (x y) of the picture (this is a gd library)
$info = imagecreatefromjpeg($image); //the picture you want put in the center
$infoxx = imagesx($info);
$infoyy = imagesy($info);
 
//obtain the size of the borders and total image size (you can change this values!!!!)
$s_border = $infoxx / 2;
$size = $infoxx * 2; 
 
//IMAGICK (imagick is extension of php)
$im = new Imagick(); //object
$photo = new Imagick($image); //put the photo inside variable (second object)
$im->newImage( $size, $infoyy, "red", "jpg" ); //compose the background
$im->compositeImage( $photo, Imagick::COMPOSITE_OVER, $s_border, 0 ); //join your photo + background
$im->writeImage('final.jpg'); //save picture in the same path
?>
<img src="final.jpg" />

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vertical.png
- 203 KB
the final.jpg

def imgFormat pic = Magick::Image.from_blob(self.data)[0] if pic.rows > pic.columns new_width = pic.rows * 4/3.to_f img = Magick::Image.new(new_width,pic.rows) { self.background_color = 'red' } gc = Magick::Draw.new leftBound = (new_width - pic.columns) / 2 gc.composite(leftBound, 0, pic.columns, pic.rows, pic) gc.draw(img) img.format="JPEG" self.data = img.to_blob self.save end end

Question

Convert vertical image into horizontal

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RoR

RMagick

RubyOnRails

Ruby Scripting Language

ImageMagick

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