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        UVPackmaster

        UVPackmaster

        UVPackmaster is an efficient UV packing solution for Blender 3D. Its robustness comes from the fact that the core of its algorithm was written in C++ and runs as a separate multi-threaded application. However, the solution is a typical Blender add-on from the users viewpoint - you install it using the standard procedure for Blender add-ons.

        Watch the following video presentation to check how efficient it is.

        (NOTE: the video is outdated. The packing algorithm was refactored in version 1.3 and now it is about 10 times faster. We are preparing a new video reflecting these changes.)


        The add-on is available in two versions: basic and extended. The functionalities provided by the two versions are depicted are listed below:

        • efficient packing algorithm: basic and extended
        • multi-threading support: basic and extended
        • measure area of selected islands: basic and extended
        • check for overlapping islands: basic and extended
        • rotate islands to achieve better packing: extended only
        • heuristic search algorithm: extended only
        • pack for a non-squared texture: extended only
        • pack new islands into an existing packing: extended only


        The basic version is available for free. You still can make a donation when downloading the basic version in order to reward our work, but we generally recommend buying the extended version.

        Why is the extended version worth buying:

        • first of all, by buying the extended version you support our work and motivate us to develop this project further,
        • you can achieve much better packing when rotations are considered (note the presentation video shown above was recorded using the extended version),
        • when new features are implemented the add-on price may increase, but in order to get the update you will only have to pay the difference between the new price and the amount you have already paid


        New functionalities planned to be implemented include:

        • packing additional islands to those already packed (DONE in version 1.2)
        • grouping islands by material.


        Installation

        Use the usual add-on installation procedure for Blender:

        • go to the User Preferences
        • select 'Add-ons' tab
        • click 'Install Add-on from File'
        • navigate to the zip file of the add-on and confirm (do not unzip the file manually)
        • find 'UVPackmaster' add-on on the add-ons list and enable it.


        Interface

        The add-on interface may be found in the left side panel of the UV Editor (you can open the panel by pressing 'T' key when the mouse cursor is in the UV Editor space). Interface is located in the 'Tools' tab of the panel.


        Topology Requirements

        Packer requires all UV islands to have clean, no self-overlapping boundaries (the outer boundary and inner holes boundaries). Also it is not allowed that single UV vertex belongs to two boundaries at the same time. If an island doesn't satisfy such requirement the add-on will return 'Invalid topology' error.


        Supported platforms

        • Windows 64-bit
        • Linux 64-bit


        IMPORTANT NOTE: we are doing our best to make sure that UVPackmaster will run without issues on every system version and distribution, but it is impossible for us to check every existing configuration. That is why we recommend downloading the basic version of the add-on in order to check whether it runs smoothly on your OS before buying the extended version.

        We will add Mac support if we get many requests for it.


        Packing Options

        Iterations: number describing how exact the algorithm will be when searching for island placement.

        Margin: margin to apply during packing.

        Rotation Enable: allow packer to rotate islands in order to achieve better result.

        Pre-rotation Disable: disable the initial rotation of islands before generating other orientations. The pre-rotation operation usually optimizes packing, use this option only if you have a good reason

        Rotation Step: rotation step in degrees to apply during packing.

        Automatic Overlap Check: automatically check for overlapping islands after packing is done.

        Heuristic Search Time: the time in seconds the add-on will spend searching the optimal packing solution using the heuristic algorithm. Value '0' means the feature is disabled. This feature is most useful when a single packing pass doesn't take much time (a few seconds). Use it with a limited number of islands and with limited island orientations considered ('Rotation Resolution' == 1). The current heuristic algorithm is most efficient for packing UV maps containing limited number of big islands of irregular shape.

        Use Texture Ratio: take into consideration the ratio of the active texture dimensions during packing.

        Pack To Others: add selected islands into those already packed in the unit UV square (no scaling will be applied).


        Changes Log

        Release 1.1:

        • add 'Use Texture Ratio' option
        • add 'Pre-rotation Disable' option


        Release 1.2:

        • add 'Pack To Others' option


        Release 1.21:

        • fix 'Maximum recursion depth' issue
        • change 'Rotation Resolution' option to 'Rotation Step'


        Release 1.3:

        • complete refactor of the algorithm


        Release 1.31

        • do not show option in the interface which is still in experimental version and thus disabled
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        Your rental will be available for 30 days. Once started, you’ll have 72 hours to watch it as much as you’d like!

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