163 lines
6.3 KiB
Markdown
163 lines
6.3 KiB
Markdown
# Actions panel: Manual UV Mode
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In Manual mode, the **Actions** panel displays the **UV Mode: Manual** label and helpers for manual UV manipulation. The Manual mode provides the following functionality to help you with texture mapping:
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* The [Project UVs](#Project) section provides different UV projection methods.
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* The [Selection](#Selection) section allows you to expand which UV elements are selected.
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* The [Edit](#Edit) section provides manipulation functionality.
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To access this panel, either click the **Convert to Manual** button from the [Actions panel in Auto UV Mode](auto-uvs-actions.md), or click the  **UV Vertex** or  **UV Edge** [edit mode buttons](edit-mode-toolbar.md).
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> **Tip:** If you get to the point where you have been making a lot of edits and something seems wrong but you're not sure how to fix it, you can clear all the edits. To do this, navigate to the **UV Mode: Auto** Actions panel and click the **Reset UVs** button.
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To switch back to the **Actions** panel in **Auto UV Mode** and convert all selected faces to [Auto UVs](auto-uvs-actions.md), click the **Convert to Auto** button.
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> **Tip:** Before you start to manipulate UVs manually, make sure you delete any faces that you don't need. For example, if you have a box that is sitting against the wall and doesn't move, delete the face pressed up against the wall. It is a waste of resources to render faces that aren't visible.
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<a name="Project"></a>
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## Project UVs
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Select how you want ProBuilder to project the UVs: using the **Planar** or **Box** projection method.
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### Planar
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Unwraps the selected face(s) using a Planar projection method.
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Planar projection draws the texture on an entire image as if it is projected from a single plane. That is, image travels perpendicularly from the virtual projection plane onto the surface.
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### Box
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Unwraps the selected face(s) using a Box projection method.
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Box projection is like applying planar projection from all six planes at once. This type of projection is ideal for boxes and other 3-dimensional flat objects.
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<a name="Selection"></a>
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## Selection
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There are two selection helpers you can use to expand which UV elements are selected: **Select Island** and **Select Face**.
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### Select Island
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With a UV element selected, click this to expand the selection so that it includes all other connected UV elements.
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### Select Face
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With a Vertex or Edge selected, click to select all elements on the same face.
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<a name="Edit"></a>
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## Edit
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ProBuilder provides a number of manual manipulation features for working in the UV Editor: [welding](#Weld) vertices; [splitting](#Split) and [collapsing](#Collapse) UVs; flipping UV elements [horizontally](#Horizontal) and [vertically](#Vertical); and [resizing](#Fit) UV elements to match the UV space.
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<a name="Weld"></a>
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### Weld
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**Weld** collapses selected vertices together, but only if they are within a set distance.
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To adjust the distance modifier, click the **+** button on the right side of the **Weld** button.
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For example, it is good practice to use a low value, such as 0.01. Then you can select all of the UVs at the same time and use **Weld** to reduce duplicate UV vertices. This is an important step if you are planning on autostitching, because it requires faces to be adjacent, and duplicate edges produce undesired results.
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<a name="Collapse"></a>
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### Collapse UVs
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**Collapse UVs** collapses all selected vertices to a single vertex, regardless of distance.
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<a name="Split"></a>
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### Split UVs
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**Split UVs** breaks off the selected UV element(s) from any UV element(s), so that you can manipulate them independently.
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<a name="Horizontal"></a>
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### Flip Horizontal
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**Flip Horizontal** flips the selected UV element(s) in the horizontal direction.
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<a name="Vertical"></a>
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### Flip Vertical
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**Flip Vertical** flips the selected UV element(s) in the vertical direction.
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<a name="Fit"></a>
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### Fit UVs
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Use **Fit UVs** to scale and move the selected UV element(s) to fit them exactly within the UV space.
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<a name="continue"></a>
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### Autostitching
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Usually, to unwrap UV faces, you need to manually position each one individually and weld the UV vertices together. **Autostitching** performs this automatically.
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You can autostitch any two adjacent faces together. To do this, follow this procedure:
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1. Select a face in the Scene view.
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2. Open the UV Editor window and switch to UV Face editing mode.
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3. Select a face on the Mesh and then **Ctrl+Click** a face that shares an edge with the current selection.
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> **Important:** Use the **Ctrl** key for both macOS and Windows.
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4. You can continue to **Ctrl+Click** one face at a time as long as it is adjacent to the selected face.
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Autostitching allows you to control how ProBuilder projects the Texture image across the Mesh. It is like building a UV quilt that uses [planar projection](#Project).
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<a name="copy-uvs"></a>
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### Copy UVs
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You can copy UVs from one face to another. For example, if you are working on a barrel and you want to copy the UVs from the top face to the bottom, follow these steps:
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1. Open the UV Editor. ProBuilder can only perform UV editing tasks when the UV Editor is open.
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2. In the Scene view, select the face you want to copy from.
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3. **Ctrl+Shift+Click** on the face you want to copy to.
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> **Important:** Use the **Ctrl** key for both macOS and Windows.
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4. You can continue to **Ctrl+Shift+Click** each face you want to copy to.
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