Function _dotProduct

Lib/pagebot/mathematics/transform3d.py:20–32

(array, matrix)

import math

def _dotProduct(array, matrix):
    output = []
    for pt in array:
        if not output:
            assert len(pt) == len(matrix) == len(matrix[0])
        outPt = []
        for i in range(len(pt)):
            t = 0
            for j, c in enumerate(pt):
                t += c * matrix[j][i]
            outPt.append(t)
        output.append(tuple(outPt))
    return tuple(output)

def _offsetArray3D(array, offset):
    dx, dy, dz = offset