CLIP STUDIO PAINT has a lot of useful functions for drawing illustrations and manga.

 

Among them, the "LT Conversion" function that converts 3D objects into line art is very useful when drawing backgrounds!

 

However, have you ever thought that the line art is not extracted very cleanly and

 

I don't really get it??? ?

?

 

There are times when you want to use it as part of the background of a small frame or as a rough sketch, and want to operate it intuitively without spending too much time.

 

I don't have a deep understanding of "3D objects" and vector line art yet,

 

so this time I would like to leave only the quickest method as a memo.

 

I hope it will help you with some kind of creative endeavor!

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We will be using these assets this time.

Thank you!

 

[Staff room desk set]

I'll make it look like this! ↓

◆ Procedure for LT conversion from 3D object

1. Right-click on the layer where the 3D object is placed. 2. Click "LT conversion of layer" in the menu that appears.

❸ Set "LT conversion of layer"

This time, I want to ignore shadows and tones and extract only the outlines and lines, so I set it as follows.

 

• Extract lines: Check vector layer

 

• Line width (optional): 0.1mm

 

• Detection accuracy (optional): 90

 

*The higher the "detection accuracy", the more accurately the edges of polygon faces are read and expressed as lines. It's like writing more.

 

 

◆ Try changing the resolution to 1200dpi

In the first place, most of the time the line art is not extracted properly because the size of the canvas, the size of the 3D object, or the resolution is insufficient.

 

Let's try making it larger for now.

 

※Please never try this on a work in progress, but on a new canvas!

This article makes the image extremely large. If you are actually using it in your work, please try it while taking into consideration the size of the frame and the minimum size that will be printed.

 

For those who regularly draw color illustrations for the web or for other purposes, 1200dpi can be a bit of a shock.

 

 

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▼This is the image for "A5 size, resolution 350dpi"

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▼This is the image for "A5 size, resolution 1200dpi"

Is this good enough for a draft?

 

 

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▼This is an image of "A4 size, resolution 1200".

In the LT settings, I set "Detection accuracy" to "10" so that unnecessary lines are not extracted.

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◆ Caution ◆

 

Depending on your computer's specs, the conversion may take some time.

 

If you are worried about the process freezing, try a resolution of 600 dpi, adjust the size of the canvas and objects,

 

perform the LT conversion for each object on a separate canvas, and then cut out only the layers you need and paste them into your work.

 

 

◆ If you want to further correct the lines

[Partially fixed] Reduce the control points of vector lines

Depending on the material, the lines may vary in thickness like this.

▲The brush size is set to 0.2mm to make it easier to see the strength of the strokes.

 

If you click on the line with the "Object" selection tool,

you will see that it has many control points.

 

This is because there is a slight gap between the points.

For straight lines, the fewer dots you have the more even and neat the lines will be.

 

So let's reduce the number of dots!

 

 

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procedure

❶ Select the "Simplify vector line" tool from the "Line correction" subtool to reduce the number of control points.

❷ In the "Tool Property" window, check "Simplify" and set "Degree" to Max for now.

 

(You can ultimately use any setting you like.)

❸ Trace over the lines you want to clean.

So what do you think? Are the straight lines neater?

 

▼The number of control points has also been significantly reduced.

It may be difficult to use on complex backgrounds or curved lines, but it is useful when you want to make a part look neat.

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[Correct the overall line] Change the brush shape and size settings

This is a method to make the seams between points less noticeable without reducing the number of control points.

This is useful when there are many areas to correct.

 

Also, since the points are not moved, the entire image will not be deformed.

 

 

procedure

❶ Select the line art layer and select the "Object" tool.

❷ Check that the brush shape is set to "Pen" from the "Tool Properties" menu.

▲ To make the changes easier to see, I changed the layer settings to "Expression color: Gray" and "Brush anti-aliasing: Weak."

 

❸ Click the wrench symbol to display the "Sub Tool Detail" window.

❹ Open "Brush Size" from the tab

and turn off "Pen Pressure" from the icon on the far right of the Brush Size item.

So what do you think? Has there been any change?

I think the connections between the control points and other points have become smoother.

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If you want to make lines look smoother

When you want to show a color illustration or close-up details, you may find the jagged lines of the "Monochrome" (2-value) setting bothersome.

 

❶ Select the line art layer and in the layer properties,

change the expression color from "Monochrome" to "Gray" or "Color."

 

❷ Select the "Object Tool."

 

❸ In the "Tool Properties" window, reduce the brush size and set the anti-aliasing to "Weak" (strength is up to you).

 

This will result in smoother, more delicate lines.

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Please note

 

For manga manuscripts and the like, the resolution and color mode (mostly monochrome 2-value) of the submitted data may be determined in advance.

 

When saving and submitting, please pay attention to the layer color mode and save format.

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That was the end of "How to easily clean up vector lines after LT conversion of a 3D object."

 

Thank you for reading to the end.