Cant get Scale_Image to work

[RocketRod]

Any tricks to this?

BO.Picture is a Picture attribute

Tried BO.Picture=Scale_IMage(BO.Picture,50)

Also BO.Picture=Scale_Image(BO.Picture,600,600)

Get in log value not changed because it was equal to the old value Picture=null

What am I doing wrong?

Cheers ROd

[Rennur]

I've tried to reproduce this:

My Rule:

• If Object.Picture IS DEFINED
  Then Object.Picture=SCALE_IMAGE(Object.Picture,500,500)

I can tell you that the picture is uploaded, scaled to 500,500 and displayed on the form properly. There are some questionable things in the log.

• + Evaluating rule 'Picture' If Object.Picture IS DEFINED Then Object.Picture=SCALE_IMAGE(Object.Picture,500,500)
  - Evaluating condition Object.Picture IS DEFINED
  - Condition evaluated to true: null
  - Adding action Object.Picture=SCALE_IMAGE(Object.Picture,500,500) to the agenda
  
  + Executing action Object.Picture=SCALE_IMAGE(Object.Picture,500,500) from rules of object Object

The log also shows the combination of the two actions below executed another 31 times afterwards:

• * Started evaluation of rules after data has been changed by the actions
  * Executing action Object.Picture=SCALE_IMAGE(Object.Picture,500,500) from rules of object Object

Cheers

[RocketRod]

Thanks Rennur.

Picture uploads and display fine. But still can't get it to resize. Must be the message in the log Picture =null?

Don't know what else to try.

Is it a bug support?

Cheers Rod

Using 1717

[aware_support]

It should work as Rennur says. What's in your log?

[RocketRod]

Executing action PictureItem.Picture=SCALE_IMAGE(PictureItem.Picture,50) from rules of object PictureItem
Value was not changed because it was equal to the old value Picture=null

Cheers Rod

[aware_support]

Can you try SCALE_IMAGE(PictureItem.Picture, 50, 50)?

[RocketRod]

Well they did work in a sense in that it rescaled the picture. However using the height and width functions it shows me that the height and width are both now set to 2500 which is 50*50. I would have thought they should be 50?
Maybe the height and width functions also have an issue? At least I can't get the scale image to work with a percentage.


Anyway totally confused now.


Cheers Rod

[aware_support]

Actually, if the function has two parameters the second parameter indicates scale as a number between 0 and 1 (for 50% use 0.5)

If there are 3 parameters the second and third parameters are width and height of the result in pixels. The documentation of the function is misleading

[RocketRod]

THANKS!

All worked now. Anyone wanting to use it take note of the above.

Wish List - As I posted elsewhere would be great to have the resize done BEFORE the upload to save time.

Cheers Rod

[Gabbitas]

Hi,

Just wanted to bring some of this one to the forefront again. As mentioned a few times in the past it would be good to have an image scaled before it gets uploaded especially from mobile devices. Some phones now have very hi res cameras built in and produce quite large image file size. I have users tring to upload pictures 5 or even 10mb in size. If they have a crappy cell signal it takes ages to upload or even times out!

Is there anything that can be done about this? Anyone got any ideas?

Thanks

[RocketRod]

Sadly my users had to stop uploading pictures via mobile phones as it takes far too long to upload them. Until something is done as you said to resize before uploading, then I can't see how one can use this feature at all on mobile devices.

Cheers Rod

[Jaymer]

For android, you can get an 'alternate' camera app that does this scaling BEFORE the upload.
Makes it very easy to upload smaller images.
Haven't looked on Apple (which I am). A customer reported this to me.

[jannes]

I'm using in the business rules :

IF IMAGE_WIDTH (PersPeri.Foto2) <= 300 AND IMAGE_HEIGHT(PersPeri.Foto2) <= 300 THEN
END PROCESS
ELSE
IF IMAGE_WIDTH (PersPeri.Foto2) > IMAGE_HEIGHT (PersPeri.Foto2) THEN
PersPeri.Foto2 = SCALE_IMAGE(PersPeri.Foto2, 300, IMAGE_HEIGHT (PersPeri.Foto2) / IMAGE_WIDTH (PersPeri.Foto2) * 300)
ELSE
PersPeri.Foto2 = SCALE_IMAGE(PersPeri.Foto2, IMAGE_WIDTH (PersPeri.Foto2) / IMAGE_HEIGHT (PersPeri.Foto2) * 300, 300 )

Unfortunately the photo is turned 90'.
This seems to a bug in the java plugin.
So I ask the users to take a photo in landscape format. In that case it will not turn 90'.

[Jaymer]

Have written lots on this subject. Several years now.
Have scaled a lot.
EXIF data.
Have always reported error was on Vlad’s side when scaling.

[jannes]

In the meantime I developed a resize application / module (in Delphi).
It is called in rule2.
Until now it works fine, pictures are resized / scaled from 3 a 4 Mb to 15 a 20 kB.

Rule0
IF FILE_EXISTS ('c:/mytemp/' +PersPeri.ID + '.jpg') = 'Yes' THEN
DELETE FILE 'c:/mytemp/' +PersPeri.ID + '.jpg'

Rule1
IF PersPeri.Foto2 IS DEFINED THEN
EXPORT DOCUMENT PersPeri.Foto2 TO FILE 'c:/mytemp/' +PersPeri.ID + '.jpg'

Rule2
IF FILE_EXISTS ('c:/mytemp/' +PersPeri.ID + '.jpg') = 'Yes' THEN
EXECUTE PROGRAM 'resizephoto.exe c:/mytemp/' +PersPeri.ID + '.jpg'
IMPORT DOCUMENT PersPeri.Foto2 FROM 'c:/mytemp/' +PersPeri.ID + '_scaled.jpg'