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The geometry is specified as a Screen Type with the following types supported: Immersive Room, Cylinder and Dome.
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Note than that the screen dimensions should reflect the the area covered by the projection system only. |
The Screen starts with a text box entry specifying the Eye position. It is followed by a dropdown menu used to specify the Screen Type. The Show Screens checkbox shows the dimensions of individual screens.
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Note that the test pattern displayed to represent the screen type consists of 6 faces of a cube mapped on to the geometry of the screen. Each face is labelled with front, back, left, right, top or bottom and contains an igloo logo together with a grid pattern and solid circles in each corner. |
Immersive Room
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Create a box with specified Width (distance between Left screen and Right screen), Depth (distance between Front screen and Back screen),and Height (distance between Top screen and Bottom screen).
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Create a cylinder scene with a given Radius (radius of the circle at the base of the cylinder), Height (distance from the base to the top of the cylinder), Angle Range (number of degrees in the circle e.g. 360 for complete closed cylinder) and Angle Offset (number of degrees to rotate the screens test pattern about the vertical axis).
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Create a dome scene with a given Radius (radius of the circle at the base of the dome), Angle Range (number of degrees in the circle e.g. 360 for complete closed dome)and Angle Offset (number of degrees to rotate the screens test pattern about the vertical axis).
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The dome is modelled as a hemisphere and can be adjusted using the Lower Pitch and Upper Pitch parameters. Typically, an Igloo dome will use a front-facing projector setup with the projectors located at the top of the dome. In this case, the Upper Pitch value of 90 should be reduced so that the non-projected area where the projectors are located is defined. The Lower Pitch value of 0, represents the equator of the sphere. Adjusting this parameter allows for domes which have a bottom edge above or below the line of the sphere’s equator.
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The canvas region is a composition of all screens in the projection scene with empty space in between. The canvas border is an axis aligned bounding box whose purpose is to give a visual cue of the canvas region and is drawn as thick yellow line.
Canvas Topology
The topology of the canvas should mirror the topology of the multiple monitor setup in Windows. For a projection scene with no floor projection this would typically be a horizontal row of monitors. For a projection scene with floor projection, it is common to have a grid arrangement, with the floor ‘monitors’, positioned below the monitors used for the walls. In this case, the screens can be repositioned using the left mouse button to drag them to a new location, as shown below.
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Canvas Resolution
The Canvas Resolution (px) this is valuesgive the overall canvas resolution in pixels specified in width and height respectively. The canvas resolution is calculated using the resolution of one of the width and height parameters together with the aspect ratio of the screen. Enter the known value of one of the parameters, based on the immersive space design drawings. The other dimension will then be automatically calculated and updated.
The height and width values of each of the views screens which make up the projection scene are also calculated automatically. These are displayed below the Canvas Resolution as width, height pairs and labelled Left Resolution, Front Resolution, Right Resolution etc.
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The Projectors tab presents settings which control the appearance of the test cardsimage. It also defines how many projectors are used in the immersive space, which in turn, provides settings for a multi-window setup of ICE.
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Grid Spaces, Grid Thicknessand Font scale are purely visual changesparameters affecting the appearance of the test image. A test card image preview is at the bottom of the screen displayed to help visualise the effects of changes.
Guide Lines, with a Guide Thickness parameter, can also be added to the test image to help with the warping alignment.
Each Screen can also be edited to increase modify the number of projectors. To add a second projector to the left screen, for instance, we’d change the number of columns to 2:
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Export
The Export tab enables the exporting of the generated configuration files.
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