OTOY Forums

Posted: **Thu Apr 28, 2016 3:47 pm**

When rescaling objects in standalone is there any way to get the scatter files follow the rescale?
I don't have the scene anymore for my 3D app to generate new scatter files, so is there any way I can recalculate the scatter file inside Standalone when rescaling objects that uses the scatter files?

Posted: **Thu Apr 28, 2016 11:42 pm**

If I understand correctly, you have a scatter node connected to a placement node, and you'd like to rescale your scatter files and get them out again. Here is a lua script that will do it. Create a placement node, connect it to the output pin of the scatter node, make the changes in the placement node, then ensure it is still selected and run this script - it will create a new scatter node with your placement node's changes made to it. Then you can copy the transforms from this scatter node.

Code: Select all

local placement = octane.project.getSelection()[1]
if not placement or placement:getNodeInfo().type ~= octane.nodeType.NT_GEO_PLACEMENT then
    octane.gui.showError("Please select a placement node.", "Select placement")
    return
end


local placementTransform = placement:getConnectedNode(octane.pinId.P_TRANSFORM)
local postMatrix = placementTransform:getAttribute(octane.attributeId.A_TRANSFORM)

local scatter = placement:getConnectedNode(octane.pinId.P_GEOMETRY)
if scatter:getNodeInfo().type ~= octane.nodeType.NT_GEO_SCATTER then
    octane.gui.showError("Script only works for placement connected to scatter node at the moment.", "Error")
    return
end


-- scatter has attribute array A_TRANSFORMS of matrix type
local transforms = scatter:getAttribute(octane.attributeId.A_TRANSFORMS)

local newTransforms = {}

for k,v in pairs(transforms) do
    print("dealing with transform " .. k)
    newTransforms[k] = octane.matrix.mul(v, postMatrix)
end

local bakedScatter = octane.node.create {
    name = "Baked Scatter",
    type = octane.nodeType.NT_GEO_SCATTER
}

bakedScatter:setAttribute(octane.attributeId.A_TRANSFORMS, newTransforms)

Posted: **Fri Apr 29, 2016 3:07 pm**

This is awesome! Thank you Haze

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Scale and scatter files inside Standalone?

Scale and scatter files inside Standalone?

Re: Scale and scatter files inside Standalone?

Re: Scale and scatter files inside Standalone?