Matrix Transformation

Matrix Transforms

A wrapper class, GMatrix will run all move and arc commands through a 2D transformation matrix before forwarding them to G.

To use, simply instantiate a GMatrix object instead of a G object:

# Replace this line 
#   from mecode import G
# with this one
from mecode import GMatrix
import numpy as np

g = GMatrix()

# set print speed
g.feed(1)

g.toggle_pressure(1)

# save the current transformation matrix on the stack.
g.push_matrix()

# rotate our transformation matrix by 45 degrees.
g.rotate(np.pi/4)

# generate a serpentine path of length 25 mm, 5 lines, and 1 mm spacing
g.serpentine(25, 5, 1, color=(1,0,0))

# revert to the prior transformation matrix.
g.pop_matrix()

g.toggle_pressure(1)

g.teardown()

g.view('2d')

The transformation matrix is 2D instead of 3D to simplify arc support.

Generated gcode

Running mecode v0.2.38
G1 F1
Call togglePress P1
G1 X17.677670 Y17.677670
G1 X-0.707107 Y0.707107
G1 X-17.677670 Y-17.677670
G1 X-0.707107 Y0.707107
G1 X17.677670 Y17.677670
G1 X-0.707107 Y0.707107
G1 X-17.677670 Y-17.677670
G1 X-0.707107 Y0.707107
G1 X17.677670 Y17.677670
Call togglePress P1

Approximate print time: 
        129.000 seconds 
        2.1 min 
        0.0 hrs

Result: before rotating by 45 degrees

Result: after rotation transformation