Unity sprite editor slice не работает

Sprite Editor

Иногда текстура спрайта содержит только один элемент графики, но часто гораздо удобней объединить несколько изображений связанных друг с другом в одно изображение. Например, изображение может содержать составные части персонажа, как для машины колеса которой двигаются независимо от корпуса. Для этих целей Unity предоставляет Sprite Editor позволяя с легкостью извлекать элементы составного изображения.

NOTE:

Make sure the graphic you want to edit has its Texture Type set to Sprite (2D and UI). For information on importing and setting up sprites, see Sprites.

Sprite textures with multiple elements need the Sprite Mode to be set to Multiple in the Inpsector. (See Fig 2: Texture Import Inspector… below.)

Открытие редактора спрайтов

Открытие редактора спрайтов

Select the 2D image you want to edit from the Project View (Fig 1: Project View).

Note that you can’t edit a sprite which is in the Scene View.

Click on the Sprite Editor button in the Texture Import Inspector (Fig 2: Texture Import Inspector) and the Sprite Editor displays (Fig 3: Sprite Editor).

Note: You can only see the Sprite Editor button if the Texture Type on the image you have selected is set to Sprite (2D and UI).

Fig 1: Project View Fig 2: Texture Import Inspector with Sprite Editor button

Note: Set the Sprite Mode to Multiple in the Texture Import Inspector if your image has several elements.

Fig 3: Sprite Editor

Помимо составного изображения, вы увидите различные элементы управления в заголовке окна редактора. Слайдер в правом верхнем углу управляет приближением, в то время как кнопка с цветными полосками слева от него переключает режим отображения альфа-канала и обычный вид изображения. Самый важный элемент управления это меню Slice в левом верхнем углу, который предоставляет опции для автоматической нарезки элементов изображения. Кнопки Apply и Revert позволяют вам сохранить или отменить сделанные изменения.

Использование редактора

The most direct way to use the editor is to identify the elements manually. If you click on the image, you will see a rectangular selection area appear with handles in the corners. You can drag the handles or the edges of the rectangle to resize it around a specific element. Having isolated an element, you can add another by dragging a new rectangle in a separate part of the image. You’ll notice that when you have a rectangle selected, a panel appears in the bottom right of the window:

The controls in the panel let you choose a name for the sprite graphic and set the position and size of the rectangle by its coordinates. A border width, for left, top, right and bottom can be specified in pixels. There are also settings for the sprite’s pivot, which Unity uses as the coordinate origin and main “anchor point” of the graphic. You can choose from a number of default rectangle-relative positions (eg, Center, Top Right, etc) or use custom coordinates.

The Trim button next to the Slice menu item will resize the rectangle so that it fits tightly around the edge of the graphic based on transparency.

Note: Borders are only supported for the UI system, not for the 2D SpriteRenderer.

Автоматическая нарезка (slicing)

Isolating the sprite rectangles manually works well but in many cases, Unity can save you work by detecting the graphic elements and extracting them for you automatically. If you click on the Slice menu in the control bar, you will see this panel:

With the slicing type set to Automatic, the editor will attempt to guess the boundaries of sprite elements by transparency. You can set a default pivot for each identified sprite. The Method menu lets you choose how to deal with existing selections in the window. The Delete existing option will simply replace whatever is already selected, Smart will attempt to create new rectangles while retaining or adjusting existing ones, and Safe will add new rectangles without changing anything already in place.

Grid by Cell Size or Grid by Cell Count options are also available for the slicing type. This is very useful when the sprites have already been laid out in a regular pattern during creation:

The Pixel Size values determine the height and width of the tiles in pixels. If you chose grid by cell count, Column & Row determines the number of columns and rows used for slicing. You can also use the Offset values to shift the grid position from the top-left of the image and the Padding values to inset the sprite rectangles slightly from the grid. The Pivot can be set with one of nine preset locations or a Custom Pivot location can be set.

Note that after any of the automatic slicing methods has been used, the generated rectangles can still be edited manually. You can let Unity handle the rough definition of the sprite boundaries and pivots and then do any necessary fine tuning yourself.

Polygon Resizing

Open the Sprite Editor for a polygon and you have the option to change its shape, size, and pivot position.

Shape

Sprite Editor: Polygon resizing — shape

Enter the number of sides you want the polygon to have in the Sides field and click Change.

Size and Pivot

Sprite Editor: Polygon resizing — size and pivot point — click on the polygon to display these options

SIZE: To change the polygon’s size, click on the sprite to display green border lines and the Sprite information box. Click and drag on the green lines to create the border you want, and the values in the Border fields change. (Note that you cannot edit the Border fields directly.)

PIVOT: To change the polygon’s pivot point (that is the axis point the polygon moves around), click on the image to display the Sprite information box. Click on the Pivot drop down menu and select an option. This displays a blue pivot circle on the polygon; its location depends on the pivot option to you have selected. If you want to change it further, select Custom Pivot and click and drag on the blue pivot circle to position it. (Note that you cannot edit the Pivot fields directly.)

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9-slicing Sprites

9-slicing is a 2D technique which allows you to reuse an image at various sizes without needing to prepare multiple Assets Any media or data that can be used in your game or project. An asset may come from a file created outside of Unity, such as a 3D Model, an audio file or an image. You can also create some asset types in Unity, such as an Animator Controller, an Audio Mixer or a Render Texture. More info
See in Glossary . It involves splitting the image into nine portions, so that when you re-size the Sprite A 2D graphic objects. If you are used to working in 3D, Sprites are essentially just standard textures but there are special techniques for combining and managing sprite textures for efficiency and convenience during development. More info
See in Glossary , the different portions scale or tile (that is, repeat in a grid formation) in different ways to keep the Sprite in proportion. This is useful when creating patterns or Textures An image used when rendering a GameObject, Sprite, or UI element. Textures are often applied to the surface of a mesh to give it visual detail. More info
See in Glossary , such as walls or floors in a 2D environment.

This is an example of a 9-sliced Sprite, split into nine sections. Each section is labelled with a letter from A to I.

The following points describe what happens when you change the dimensions of the image:

The four corners (A, C, G and I) do not change in size.

The B and H sections stretch or tile horizontally.

The D and F sections stretch or tile vertically.

The E section stretches or tiles both horizontally and vertically.

This page describes how to set 9-slicing up, and which settings to apply depending on whether you want to stretch or tile the areas shown above.

Setting up your Sprite for 9-slicing

Before you 9-slice a Sprite, you need to ensure the Sprite is set up properly.

First, you need to make sure the Mesh Type is set to Full Rect. To apply this, select the Sprite, then in the Inspector window click the Mesh Type drop-down and select Full Rect. If the Mesh Type is set to Tight, 9-slicing might not work correctly, because of how the Sprite Renderer generates and renders the Sprite when it is set up for 9-slicing.

The Sprite’s Inspector window. Mesh Type is highlighted in the red box.

Next, you need to define the borders of the Sprite via the Sprite Editor window. To do this, select the Sprite, then in the Inspector A Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info
See in Glossary window click the Sprite Editor button.

The Sprite’s Inspector window. The Sprite Editor button is highlighted in the red box. See documentation on Sprites for information on all of the properties in the Sprite Import Settings.

Use the Sprite Editor window to define the borders of the Sprite (that is, where you want to define the tiled areas, such as the walls of a floor tile). To do this, use the Sprite control panel’s L, R, T, and B fields (left, right, top, and bottom, respectively). Alternatively, click and drag the green dots at the top, bottom, and sides.

Defining the borders of the Sprite in the Sprite Editor window

Click Apply in the Sprite Editor window’s top bar. Close the Sprite Editor window, and drag the Sprite from the Project window A window that shows the contents of your Assets folder (Project tab) More info
See in Glossary into the Scene A Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
See in Glossary view to begin working on it.

9-slicing your Sprite

Select the Sprite in the Scene view An interactive view into the world you are creating. You use the Scene View to select and position scenery, characters, cameras, lights, and all other types of Game Object. More info
See in Glossary or the Hierarchy window. In the Inspector window, navigate to the Sprite Renderer A component that lets you display images as Sprites for use in both 2D and 3D scenes. More info
See in Glossary component and change the Draw Mode property.

It is set to Simple by default; to apply 9-slicing, set it to either Sliced or Tiled depending on the behavior you want. The follow sections explain how each one behaves, using this Sprite:

The original Sprite used for the examples shown below

Simple

This is the default Sprite Renderer behaviour. The image scales in all directions when its dimensions change. Simple is not used for 9-slicing.

Sliced

In Sliced mode, the corners stay the same size, the top and bottom of the Sprite stretch horizontally, the sides of the Sprite stretch vertically, and the centre of the Sprite stretches horizontally and vertically to fit the Sprite’s size.

When a Sprite’s Draw Mode is set to Sliced, you can choose to change the size using the Size property on the Sprite Renderer or the Rect Transform Tool. You can still scale the Sprite using the Transform properties or the Transform Tool; however, the Transform scales the Sprite without applying the 9-slicing.

Tiled

In Tiled mode, the sprite stays the same size, and does not scale. Instead, the top and bottom of the Sprite repeat horizontally, the sides repeat vertically, and the centre of the Sprite repeats in a tile formation to fit the Sprite’s size.

When a Sprite’s Draw Mode is set to Sliced, you can choose to change the size using the Size property on the Sprite Renderer or the Rect Transform Tool. You can still scale the Sprite using the Transform properties or the Transform Tool; however, the Transform scales the Sprite without applying the 9-slicing.

When you set the Draw Mode to Tiled, an additional property called Tile Mode appears. See the next section in this page for more information on how Tile Mode works.

See documentation on the Sprite Renderer for full details on all of the component’s properties.

Tile Mode

When the Draw Mode is set to Tiled, use the Tile Mode property to control how the sections repeat when the dimensions of the Sprite change.

Continuous

Tile Mode is set to Continuous by default. When the size of the Sprite changes, the repeating sections repeat evenly in the Sprite.

Adaptive

When Tile Mode is set to Adaptive, the repeating sections only repeat when the dimensions of the Sprite reach the Stretch Value.

Use the Stretch Value slider to set the value between 0 and 1. Note that 1 represents an image resized to twice its original dimensions, so if the Stretch Value is set at 1, the section repeats when the image is stretched to twice its original size.

To demonstrate this, the following images show the difference between an image with the same dimension but a different Stretch Value:

Stretch Value 0.1:

Stretch Value 0.5:

9-slicing and Colliders

If your Sprite has a Collider2D attached, you need to ensure that when you change the Sprite’s dimensions, the Collider2D changes with it.

Box Collider 2D and Polygon Collider 2D are the only Collider2D components in Unity that support 9-slicing. These two Collider2Ds have an Auto Tiling checkbox. To make sure the Collider2D components are set up for 9-slicing, select the Sprite you are applying it to, navigate to the Collider2D in the Inspector window, and tick the Auto Tiling checkbox. This enables automatic updates to the shape of the Collider2D, meaning that the shape is automatically readjusted when the Sprite’s dimensions change. If you don’t enable Auto Tiling, the Collider2D stays the same shape and size, even when the Sprite’s dimensions change.

Limitations and known issues

The only two Collider2Ds that support 9-slicing are BoxCollider2D and PolygonCollider2D.

You cannot edit BoxCollider2D or PolygonCollider2D when the Sprite Renderer’s Draw Mode is set to Sliced or Tiled. Editing in the Inspector window is disabled, and a warning appears to notify you that the Collider2D cannot be edited because it is driven by the Sprite Renderer component’s tiling properties.

When the shape is regenerated in Auto Tiling, additional edges might appear within the Collider2D’s shape. This may have an effect on collisions A collision occurs when the physics engine detects that the colliders of two GameObjects make contact or overlap, when at least one has a Rigidbody component and is in motion. More info
See in Glossary .

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