Pixel Perfect

About

Pixel Perfect is an Blender add-on to simplify the creation of Low Poly Pixel Art with three small but time saving features.

1. Isolate By direction
2. Unwrap Pixel Perfect UVs
3. Modify UVs designed for pixelart
4. Export a UV Layout texture with sharp unique colored UV boarders.

How to use

1. Isolate by Direction

After selecting faces in edit mode the command can be executed by opening the context menu under Isolate by Direction -> Direction. Every face wich angle between its normal and the defined direction is smaller then the4 max angle is isolated.

2. Unwrap Pixel Perfect UVs

First select an image in the UV Image Editor. Then in Edit-mode open the UV Mapping options by pressing U in the 3D View. Select Unwrap Pixel Perfect by Direction or Unwrap Pixel Perfect by Size. The UVs of every selected face gets recalculated. Note: 1 Unit equals 1 Pixel. So in order to set up your Pixel density change the Units in the Scene tab.

• Unwrap Pixel Perfect by X, Y, Z, Custom, Auto:
  Projects a selected face to the selected plain or in case of Auto to the closest plain and converts to UVs. Good, when the face normal closely directs towards the major orientations X, Y, Z.
• Unwrap Pixel Perfect by Normal:
  Projects a selected face to the normal plain and converts to UVs. Good, when the face is strongly rotated. E.g. 45° around Z.

3. Modify UVs

• Group to Pixel:
  Run this command under UV Context Menu -> Snap -> Group to Pixel. Hover over a vertex and left click it to set it as reference point. Drag your mouse to the desired location. The reference point snaps to the pixel corner under the mouse.
• Group to orthogonal Line:
  Run this command under UV Context Menu -> Snap -> Group to orthogonal Line. Hover over a vertex and left click it to set it as reference point. Drag your mouse to the desired location. Everything selected is rotated based on the mouse input. It snaps automatically to the X or Y axis.
• Mirror around Vertex:
  Run this command under UV Context Menu -> Snap -> Mirror around Vertex. Hover over a vertex and left click it to set it as reference point. Drag your mouse to the desired location. Everything selected is mirrored around the vertex and the selected axis.

4. Export UV Layout

While still in Edit-mode select all Faces and click on the UV header bar option of the UV Editor. Select Export Pixel UV Layout and save the image on your system.

Installation

To install this add-on just click the Code button and then Download ZIP. Save anywhere on your computer and open Blender. In Blender under Edit -> Preferences... -> Add-ons click the Install... button and select the downloaded file. Now enter the name Pixel Perfect in the search bar and activate the add-one. Your done!

Tipps

• Set Pixel Coordinates inside the UV Editor -> View panel to True for an easier workflow.
• I recommend to set shortcuts as followed

  Function	Shortcut
  Group to Pixel	Shift + E
  Group to orthogonal Line	Shift + R
  Mirror around Vertex	Shift + M