Help the perspective tool!

gimptest · **Joined:** Feb 21, 2016 **Posts:** 34

GIMP-drawing-transform-perspective-default parameters to set? Please advise.

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Odinbc · **Posted:** Sun Apr 17, 2016 9:43 am **(#2)**

Procedure Browser says, 'gimp-drawable-transform-perspective' and 'gimp-drawable-transform-perspective-default' are deprecated use 'gimp-item-transform-perspective'. This is how I understand it; the Transformation matrix default is an array of all zeros with 1s along the diagonal and not equal to the Parameters listed in the Procedure Browser. The default Parameters are related to the original position of the image element the Perspective tool works on, active layer, selection, path, etc. Gauge the Parameters using the Pointer Coordinates at the bottom of the screen.

For a mathematical explanation using Gimp, Perspective and homogeneous coordinates (PDF)
Also, check this thread at the ImageMagick forum.

ofnuts · **Joined:** Oct 25, 2010 **Posts:** 4757

gimptest wrote:

GIMP-drawing-transform-perspective-default parameters to set? Please advise.

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snip_20160417175020.png

As it says on the box, just give the coordinates of the points where you would drag the corners if doing it manually.

gimptest · **Joined:** Feb 21, 2016 **Posts:** 34

Thank Odinbc and ofnuts for the reply, but I still don't quite understand.
I want to use the script, just confusing don't know its corresponding argument.

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steven8 · **Joined:** Jul 04, 2015 **Posts:** 256

I'm afraid I'm totally confused. I's this a plug in that allows for manually entering coordinates for the perspective tool? What is the name of this plugin? I can't tell from this thread.

INDtanay · **Joined:** Jan 19, 2016 **Posts:** 63

Hello

Please could anyone attach the script or plugin download link here? I think if I download what you all talking about will solve my problem in the following topic:

http://gimpchat.com/viewtopic.php?f=8&t=13655

Wallace · **Posted:** Tue Apr 19, 2016 7:07 am **(#7)**

steven8 wrote:

I'm afraid I'm totally confused.
I's this a plug in that allows for manually entering coordinates for the perspective tool?
What is the name of this plugin?
I can't tell from this thread.

INDtanay wrote:

Hello

Please could anyone attach the script or plugin download link here?
I think if I download what you all talking about will solve my problem in the following topic:

gimpchat.com/viewtopic.php?f=8&t=13655

What is being shown and used in this thread is the Script-Fu Console.
The Script-Fu Console is native to Gimp.

This is what it looks like.

Once you open the Script-Fu Console,
you can then open the Procedure Browser,
by clicking Browse on the Script-Fu Console.
That's about all I know.
I'm not totally familiar with the Script-Fu Console and it's usage.

gimptest · **Joined:** Feb 21, 2016 **Posts:** 34

Thanks Odinbc
I now understand what you say, already know how to use this tool.

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INDtanay · **Joined:** Jan 19, 2016 **Posts:** 63

Thanks to Wallace and gimptest.
Sorry but my sf-console isn't working similar to gimptest.
I found the procedure. Clicked Apply. It returns its name on Console for browsing. ( Gimp 2.8.10 win XP )

The console doesn't allow editing as gimptest's. Please help.

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