New to Get a Copy of Scaled Down Version of an Image

[J. Landman Gay]

Try changing this line:

   put tImageData["image"] into image "currentpuzzle"

to this:

   set the imageData of image "currentpuzzle" to tImageData["image"]

--
Jacqueline Landman Gay | jacque at hyperactivesw.com
HyperActive Software | http://www.hyperactivesw.com
On October 28, 2020 6:06:39 AM Sannyasin Brahmanathaswami via use-livecode 
<use-livecode at lists.runrev.com> wrote:

> Take for example
>
> [command] resizeToWidth tImage, 400
>
> on resizeToWidth pImage,pSize
>   local tOrigImgWidth, tOrigImgHeight, tRatio, tNewWidth, tNewHeight
>   set the itemdel to "x"
>   put item 1 of sCurrentGraphicRect into tOrigImgWidth
>   put item 2 of sCurrentGraphicRect into tOrigImgHeight
>
>   if tOrigImgWidth is 0 then exit resizeToWidth
>
>   put pSize/tOrigImgWidth into tRatio
>   put (tOrigImgHeight * tRatio) into tNewHeight
>   put (tOrigImgWidth * tRatio) into  tNewWidth
>
>   set the rect of  pImage to 0,0,tNewWidth,tNewHeight
>
> end resizeToWidth
>
> How do I get a copy, with the image scaled down, which is visible on screen?
>
> [coded]
>  if (the width of tImage > the heigth of tImage )  then
>      # portrait
>      resizeToWidth tImage, 400
>   else
>      # landscape
>      resizeToHeigth tImage, 400
>   end if
>
>   # now we set the img to the img "currentpuzzle"
>   set the name of the last image to "currentpuzzle"
>
>   # and copy the data, at 400px wide
>   put the rect of the last image into tImageData["rect"]
>   put the imageData of the last image into tImageData["image"]
>
>   put tImageData["image"] into image "currentpuzzle"
>
>
>   BUT the full scaled copy of the image "currentpuzzle" comes into view. I 
>   wanted to get a scaled down version?
>
> How do we implement this, from the dictionary
>
>
> The imageData, unlike the contents of the image<lcs,image,> 
> container<lcs,container,>, is based on the picture as it's presented on the 
> screen, not stored in the image<lcs,image,> object<lcs,object,glossary>. 
> This means that if you resize an image<lcs,image,>, the content of the 
> image<lcs,image,> does not change, but its imageData does. If you create an 
> image<lcs,image,> and then reduce its size, its imageData reflects the 
> scaled-down, displayed image<lcs,image,>, not the original full-scale 
> image<lcs,image,>. If you create a second image<lcs,image,> and set its 
> imageData property<lcs,property,> to the imageData of the original 
> image<lcs,image,>, resizing the first image<lcs,image,> back to the 
> original dimensions displays the original image<lcs,image,> at full 
> resolution, but resizing the second image<lcs,image,> does not, because 
> setting its imageData transferred only the scaled-down version of the original.
>
>
> BR
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