API Reference > geometry-core > Numerics > Matrix4d > getSteppedPoint getSteppedPoint Method Return a point with entries from positions [i0, i0+step, i0+2step, i0+3step]. There are no tests for index going out of the 0..15 range. Usual uses are: i0 at left of row (0,4,8,12), step = 1 to extract a row. i0 at top of row (0,1,2,3), step = 4 to extract a column i0 = 0, step = 5 to extract the diagonal getSteppedPoint(i0: number, step: number, result?: Point4d): Point4d Parameter Type Description i0 number start index (for 16 member array) step number step between members result Point4d optional preallocated point. Returns - Point4d a Point4d with 4 entries taken from positions at steps in the flat 16-member array. Defined in geometry4d/Matrix4d.ts Line 278 Last Updated: 12 June, 2024