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-- gets the selected scatter node
scatter = octane.project.getSelection()[1]

-- 3x4 matrices (actually, they are standard 4x4 transform matrices in disguise but we ommit the last (0, 0, 0, 1) row)
transforms = 
{
    -- unit matrix
    { 
        { 1, 0, 0, 0 },
        { 0, 1, 0, 0 },
        { 0, 0, 1, 0 }
    },

    -- transformed matrix ( 2x scaling + translation)
    {
        { 2, 0, 0, 5 },
        { 0, 2, 0, 5 },
        { 0, 0, 2, 5 },
    }
}

-- set the array of transformations in the scatter node
scatter:setAttribute(octane.A_TRANSFORMS, transforms)

Code: Select all

-- Calls the predicate function on each item of the given type.
-- This will recursive in each graph to find nodes of the given type.
--
-- @param   graph (Graph)
-- @param   nodeType (Type of node we're looking for)
-- @param   pred (Predicate function that takes a scatter node)
function updateItem(g, nodeType, pred)
    for i, item in ipairs(g:getOwnedItems()) do
        if item:getProperties().type == nodeType then
            pred(item)
        elseif item:getProperties().isGraph then
            updateItem(item, nodeType, pred)
        end
    end
end

-- reloads a scatter node
function reloadScatter(node)
    print("reloading ", node)
    node:setAttribute(octane.A_RELOAD, true)
end

updateItem(octane.nodegraph.getRootGraph(), octane.NT_GEO_SCATTER, reloadScatter)