Category Archives: openSIM

Cloud Avatars?

Do you have a cloud avatar? If you do, follow these steps to help get you sorted out.

To create you avatar body and outfit:

  1. Right click the folder “Body Parts” and select -> New Body Parts -> New Shape.
  2. Repeat step (1) for New Skin, New Hair, New Eyes. Your “Body Parts” should now 4 Body Parts in them; New Shape, New Skin, New Hair and New Eyes. In no order of course.
  3. Select each of Body Part items and drag them to your folder called “Current Outfit “. You should begin to render a naked avatar.
  4. Next navigate to the folder “Clothing” and select -> New Clothes -> New Shirt.
  5. Repeat step (4) for New Pants You can also select other clothing  the items you want.
  6. Select each of the Clothing items and drag them to the “Current Outfit” folder like you did in step 2. This should give you some clothes that you can wear until you get your hands on some new assets.

macGRID: Getting Started

Welcome to macGRID’s Simulation Research Network! Follow these steps to connect to the macGRID.

  1. Download and install the Singularity viewer from the link provided below. You need this in order to connect and view the GRID. Download the package that corresponds to your Operating System. (e.g if you have a Windows click on the Windows Installer).

    1. After the download has completed go to the folder where that downloaded file is located. Open and run the installer. This should take a view minutes.

    2. After Singularity has installed, the program should open itself. If it does not, find the Singularity desktop icon or any other Start Menu Singularity icon and open the Singularity application.
    3. At the bottom of Singularity’s screen you will see a button called “Grid Manager”, click this button.

    4. Now that the Grid Manager is open you can add macGRID to the list on Grids. Begin by clicking “Add” in the Grids tab.
    5. Here you will enter the Grid details in order connect to macGRID.

      Under “Grid name” type in: macGRID

      Under “Login URI” copy and paste this exact URI address into the field:

      Select “Platform” as Opensim (Optional)

      Click “Ok” to apply these settings. Grid Manager will exit. macGRID should now appear in the list of available grids.

    6. Next you need to enter your account details given to. Enter your username in the “Name or Username” field and your password in “Passsword”. Confirm that “macGRID” grid you created in step (6) is the selected grid under “Grid”, if not, click the drop down menu and select “macGRID”. Also, select “My Home” as the Start Location. Click Login.

    7. Welcome to the macGRID! Check other KnowledgeBase articles for more information.

    How do I link objects to create a Linked Building?

    Have the ‘Position’ tool selected in the ‘BUILD’ toolbar.
    Click and drag to create a bounding box – everything that resides ENTIRELY within the box will be selected. By default, selected objects will show a yellow highlight. Ok?

    Click the ‘Object’ tab in your ‘BUILD’ toolbar. Click ‘Link’.

    If all the objects do not have the same owner, OpenSim will not allow the objects to be linked.

    Find the object that is not owned by you (typically a facade, or building element copied from another build).

    Make note of the object’s position and copy it. Click the first “C” to copy its position.

    Make note of the object’s name.

    You will have to ‘take’ this object by right clicking on it and selecting ‘TAKE’

    The object will now be in your inventory. Place it somewhere. 

    Click the second P to position the newly placed object based on the original position (saved on your clipboard).

    Return to step one and select all objects for linking.

    How do I create a building façade?

    1. Create a prim!!
    2. Select the appropriate façade texture that you previously uploaded. This will place the texture on all sides in different orientations. This is what we want.
    3. Use the SELECT TEXTURE option to select the all faces except FRONT and BACK
    4. Make these selected textures ‘ALPHA’
      1. This will help eliminate any ‘edges’ that may be visible on your prim face.
      2. This will ensure that other building textures will show through the ‘ALPHA’ portions of your texture.
    5. Reduce the prim’s z-depth so that it is a single plane. (You should now have a single plane prim with the same texture/facade on both sides)
      1. Ensure that the “Repeats per face” are set to 1.000 for both Horizontal and Vertical.
    6. Adjust the base of the prim using the ‘Stretch’ option in your build tool so that the base matches the edge of a building on your satellite map.
      1. Ensure that “Stretch Texture” is clicked (or you will see multiple building faces appear as repeats).
    7. On the reverse side use the SELECT TEXTURE option, select the ‘FLIP’ checkbox next to ‘HORIZONTAL’
      1. This will create a mirror image (as though your prim was see-through) of your facade front that will aid in moving/adjusting.
      2. Ensure that you use the “Select Texture” option or you will change the texture of both the front and back of your façade.
    8. In the OBJECT tab of our build tool, select PHANTOM
      1. This will ensure that an avatar or other object can pass through any invisible parts of our facade.
      2. By creating a block behind the opaque parts of our facade, we prevent avatars and other objects from going through.

    What’s the best viewer for OpenSim/macGRID?

    In our experience, buildings look much nicer in Singularity. It’s often the case that we’re designing in Singularity, and are unaware of slight differences in Imprudence or other viewers. Make sure we’re using Singularity for demo on high performance mode. (Far draw distance, optimal lighting, etc.)

    Viewing quality is also determined by performance settings on a user’s machine.

    What format should I save images in for upload as textures and facades?

    Textures should be uploaded as PNG files to ensure that ALPHA transparencies are maintained.

    Save images as 24bit color PNG to ensure high-quality edges/transparencies. (As opposed to 8-bit which may cause issues with uneven edgest – OpenSIM will be modifying the image anyway)

    Images are (typically) converted by OpenSIM to have an aspect ratio of 1:1, 1:2,
    Images are converted by OPENSIM to a native file format for use within the grid.
    Images are converted to the following sizes depending on their original resolution/dimensions.

    You’ll typically get image dimensions of:


    However, in cases of extremely uneven aspect ratios for images (such as very wide panoramas), openSIM will may make the width a multiple of the height. (eg, a 512×2048 image).


    What should I name the single objects and prims that I’ve created?

    Make it a habit to name components of any linked object. For instance, naming ‘windows’ and ‘ledges’ is good practice as it may allow others to reuse those elements without creating them from scratch. Use the “description” to hold associated keywords for easy searching. (The ability to search descriptions is off by default, and must be turned on in Inventory).

    Ensure that you also name your linked object.

    How do I get rid of hard/distinct/uneven edges on a PNG with transparency?

    To eliminate the hard edges, try adding a transparency of 2 to the texture.

    Also, try reducing the horizontal or vertical repeat number to something around 0.99 (to force a crop).

    Check your original file to see if you can adjust the transparency at the edge.

    Note that saving your original file as an 8 bit PNG will increase the likelihood of poor edges for images – there are less colours available to soften the edges for transparencies. Save your images as PNG-24 (24 bit) or higher.