The basics of layer LT conversion【EX】

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ClipStudioOfficial

ClipStudioOfficial

This time, the EX version's [LT conversion of layer] function, that makes it possible to conveniently divide images and 3D graphics into line drawings and tone layers, is introduced.

[1] Procedures of “LT conversion of layers”

①Load a layer and an image that can be converted onto the canvas and place it.

Composition, size, angle etc. should be firmly decided at this point.


- The type of layers that can be used to perform the “LT conversion of layer”

Raster layers, Vector layers, Balloon layers, Text layers, Image material layers, 3D layers, Saturated line layers, Stream line layers

* The above figure shows the 3D model "Classroom 01" pre-registered for CLIP STUDIO PAINT.


②With the layer you want to convert in the [Layer] palette selected, click the [Layer] menu → [LT Conversion of Layer], or click the [Layer Property] palette → [Extract Line] → [Execution of LT conversion of Layer].


③When the [LT conversion of layer] dialog box is displayed, adjust various settings (*) and click the [OK] button to convert.


④ Conversion is complete.


The converted line art and tones are created in the "original layer name 2" layer folder.

* The number of layers created depends on the type of the original layer and the settings of the posterization.


[2] LT conversion of layer dialog: 3D layer line adjustment.

The line drawing is drawn on the [Outline] layer, and layers are created for as many tones as specified in the posterization settings.

The [Background] is an object layer painted white. This prevents showing further transparency to unrelated lower layers.

The first items to introduce are “Extract line" and “Depth”, which are used to adjust the line thickness and other properties of the 3D layer.


① [Extract line] (3D layers only)

You can select the type of output layer for the lines to be either [Raster Layer] or [Vector Layer]. Additionally, you can set the line width, the detection accuracy, and the strength of the effect emphasizing the outer border of the outline.


② [Depth] (3D layer only)

When checked, you can adjust the thickness of the lines in the front and back of the image. Increasing the distance between the top and bottom of the graph will result in emphasizing the different line widths. Also, if [Apply only to outer line] is checked, only outlines will be adjusted.


[3] LT conversion of layer dialog: 3D textures/line adjustments.

This part will introduce the necessary settings to adjust 3D layer textures and original layers (other than 3D layers) when converting them into a line drawing.

* If [Execution of LT conversion of layer] from the [Layer Property] palette is selected, items ④ and ⑤ will inherit the [Layer Property] settings.


③ [Extract line of texture] (3D layer only)

If this is checked, the texture of a 3D layer becomes the target for the extraction as an outline line as well.


④[Extract after posterization], [Threshold of fill in black] and [Correction line width]

If [Extract after posterization] is checked, the contour will be extracted after the gradation of the texture of the 3D layer and the original layer (other than the 3D layer).

The [Threshold of fill in black] configures the areas which will be painted in black, and the [Correction line width] adjusts the width of the outlines.


⑤ [Process of edge detection]

You can select two methods: [Process of edge detection 1] and [Process of edge detection 2] from the pulldown menu. [2] allows more delicate adjustment.

- Threshold of edge: The smaller the value, the wider the area that is being extracted as a line drawing.

- Direction of detection: The extraction of the outlines in the deactivated direction becomes less prominent.

- Threshold of edge height: The smaller the value, the less strict and thinner the edge.

- Threshold of gradient variation: This adjusts the continuity of the lines. The larger the value, the easier it is to portray short lines.


[4] LT conversion of layer: Shadow Adjustments

This adjusts shadows. Based on the posterization settings, tone layers for shadows will be generated.


⑥ [Tone work]

If [Tone work] is checked, the settings to convert to a tone layer will appear.

For [Posterization], not only can the slider be used to adjust it, but also the number and density of tones generated can be set.

【A】 Click on the numerical value to adjust the tone density (%).

【B】 Adjust shadow depth (posterization range) for each density with nodes (▲).


You can delete nodes by dragging it outside the slider range. You can add nodes by clicking on the empty space near the slider.

As [Type], you can configure the type of tone and the number of lines. These are the same settings as when creating a tone with a tone layer.

* The contents configured in [Type] are not reflected in the preview.


[POINT: Making the tone from the LT conversion clearer]

If the LT conversion of a 3D model with texture is done, the texture pattern will also be posterized, so it may end up with a messy appearance.

If you want to finish with a clean impression, such as with a shadow only from the light source, try the LT conversion with the textures hidden.


<How to hide 3D texture>

With the 3D data on the canvas selected, click the tool mark in the lower right of the [Tool Property] palette to display the [Sub Tool Detail] palette.

Click the [Environment] of the [Sub Tool Detail] palette → then click [Rendering Settings] and change the check box for [Use Texture] to OFF.

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