Editor Tool Utilities – Ramer-Douglas-Peucker

local rdp = require('editor/toolUtilities/rdp')

-- Simplify a polyline with default tolerance (6.0 meters)
local nodes = { vec3(0,0,0), vec3(1,0.01,0), vec3(2,0,0), vec3(3,0,0), vec3(10,5,0) }
local newCount = rdp.simplifyNodes(nodes)
-- nodes is now compacted in-place; excess entries set to nil
log('I', 'rdp', 'Reduced to ' .. newCount .. ' nodes')

-- Simplify nodes and their corresponding widths with custom tolerance
local widths = { 10, 10, 10, 10, 12 }
local count = rdp.simplifyNodesWidths(nodes, widths, 2.0)

-- Full simplification with all parallel arrays
local vels = { 13.5, 13.5, 15, 15, 20 }
local limits = { 30, 30, 30, 30, 30 }
local normals = { vec3(0,0,1), vec3(0,0,1), vec3(0,0,1), vec3(0,0,1), vec3(0,0,1) }
count = rdp.simplifyNodesWidthsVelVelLimits(nodes, widths, vels, limits, 4.0)

-- Get raw indices without in-place modification
local kept = rdp.rdpIndices(originalNodes, 1, #originalNodes, 3.0)
for _, idx in ipairs(kept) do
  -- idx references the original array positions to keep
end