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perspective trasforming


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Hopefully this works this time? 8th times the charm!

English is not my first language. I apologize in advance for any

Does paint.net have perspective transforming, similar to sai?  Just curious ... I'm new to this program (only downloaded it yesterday), before which I've used ms religiously :( so I'm still trying to figure it out. Much thanks!

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Yes, try this plugin:

For info on how to install plugins see http://boltbait.com/pdn/InstallingEffects.php

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I wrote a (beta) plugin called Perspective Transformation that does something somewhat similar.

 

I'm not sure it does what you want, though, because there's no perspective specification, as in your example. I really don't understand how to make sense of the control you show. It has a quadrilateral, which seems to represent a perspective-transformed rectangle, and it's got a control to specify the amount of perspective. But the perspective transformation for a given rectangle to a given quadrilateral is unique: changing the amount of perspective changes the quadrilateral. I don't doubt what they're doing makes sense; I just don't know what they're doing.

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Thank you for the plugins! I'll try them out when I get home from class.

 

 

On 9/30/2016 at 10:05 PM, Ego Eram Reputo said:

Yes, try this plugin:

For info on how to install plugins see http://boltbait.com/pdn/InstallingEffects.php

Thank you @Ego Eram Reputo for the installation tutorial. I had issues where after I restarted paint.net the effect disappeared, and then the dll file became corrupted. I'll try redownloading it again following these steps.

 

 

On 9/30/2016 at 11:56 PM, MJW said:

I wrote a (beta) plugin called Perspective Transformation that does something somewhat similar.

 

I'm not sure it does what you want, though, because there's no perspective specification, as in your example. I really don't understand how to make sense of the control you show. It has a quadrilateral, which seems to represent a perspective-transformed rectangle, and it's got a control to specify the amount of perspective. But the perspective transformation for a given rectangle to a given quadrilateral is unique: changing the amount of perspective changes the quadrilateral. I don't doubt what they're doing makes sense; I just don't know what they're doing.

And @MJW, I ... don't really understand what you're asking? Hah ... sorry, English isn't my first language, so I may not be answering what you're asking. I'd prefer if there was perspective specification as in my example since it's simply the easiest way to add perspective.

 

Normally when I use drawing programs (which has previously only been ms paint and occasionally sai or photoshop) I use shortcuts to make crisp perspective that's nice and precise. Using free transform  allows me to create endless combination of perspective lines from a few grid brushes. Both sai and photoshop have transform modes where it's good 'ol ctrl+t is free transform, and shift is perspective transform; also, if I don't want to click and drag manually, I can add numeric values (ie, 10°, 50%, 3/8, ...) under width and height, X, and Y. Additionally sai also has perspective specification as in my example (I'm assuming you're talking about the perspective slider when you say "perspective specification").

 

In my example the quadrilateral represents the perspective transform rectangle. Besides clicking and dragging (which can sometimes leave wonky results) there are controls to specify how each point is moved where you enter numeric values For example, if I want to move point 1, I can type in 20% for it to move 20% closer to me, -20% to move 20% father from me, or just enter an amount in its X or Y coordinate. I find the slider to be easier to use.  I would probably be fine without the slider once I learned how to ... see, the slider moves the selected image across the perspective plane by its center point, simultaneously changing the points 1XY 2XY 3XY and 4XY to keep the image in "scale". In the end I'd probably be fine without the slider. I'm just looking for something user friendly.

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I had someone else offer up the Quadrilateral Reshape plugin. I've been told it has perspective transformation, but I don't see it? Although it has a good free transformation, but not necessarily for perspective transformation, from what I can see.

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I think that sometimes there's an insufficient appreciation for the distinction between perspective transformations and other quadrilateral-to-quadrilateral transforms.

 

Quote

... don't really understand what you're asking? Hah ... sorry, English isn't my first language, so I may not be answering what you're asking. I'd prefer if there was perspective specification as in my example since it's simply the easiest way to add perspective to small objects. occasionally

 

I mostly just mean that I don't know exactly what the control you show does. In terms of my Perspective Transformation plugin, there are four control points that specify the quadrilateral into which the the window image is mapped. There can't also be a control that specifies the amount of perspective distortion, while keeping the control points the same, because there's only one perspective transformation that maps the window corners into the same corners of the quadrilateral.

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Oh. I understand now. That's fine.

 

13 hours ago, MJW said:

I mostly just mean that I don't know exactly what the control you show does. In terms of my Perspective Transformation plugin, there are four control points that specify the quadrilateral into which the the window image is mapped. There can't also be a control that specifies the amount of perspective distortion, while keeping the control points the same, because there's only one perspective transformation that maps the window corners into the same corners of the quadrilateral.

 

In the end I'd probably be fine without the slider after I toy around and figure out how it works. I'm just looking for something user friendly.  I'll try out your plugin. It looks like it'll do  the job I need, thank you!

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