Parabola in G code
The following Python script produces a parabola in G-code. #This code produces g-code for a parabola using the equation #(y - k)2 = 4a(x - h). The parabola is open to positive x. #a = x coor of focus #k = x coor of back of parabola #h = y coor of focus #r = resolution #ymax, ymax = limits of iteration a = 2.0 k = 0.0 h = 0.0 ymax = 5.0 ymin = 0.0 resolution = 0.1 lastx = 0.0 lasty = h def frange3(start, end=None, inc=None): """ A range function, that accepts float increments... http://code.activestate.com/recipes/66472/ """ import math if end == None: end = start + 0.0 start = 0.0 else: start += 0.0 # force it to be a float if inc == None: inc = 1.0 count = int(math.ceil((end - start) / inc)) L = [None,] * count L[0] = start for i in xrange(1,count): L[i] = L[i-1] + inc return L #top half for ystep in frange3(ymax+resolution,ymin,-resolution): x = ( ((ystep - k)*(ystep - k)) + 4*a*h ) / (4*a) print "G01 X"+str(x) +" Y"+str(ystep)