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bed_mesh: refactor fade_target 

Offset the entire mesh by the fade target amount rather than offset each z lookup.

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>
This commit is contained in:
Arksine 2019-02-11 19:17:49 -05:00 committed by KevinOConnor
parent 749beb731c
commit f308171be4
1 changed files with 14 additions and 7 deletions
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21
klippy/extras/bed_mesh.py
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@ -100,10 +100,12 @@ class BedMesh:
"bed_mesh: ERROR, fade_target lies outside of mesh z "
"range\nmin: %.4f, max: %.4f, fade_target: %.4f"
% (mesh_min, mesh_max, err_target))
if self.fade_target:
mesh.offset_mesh(self.fade_target)
else:
self.fade_target = 0.
self.z_mesh = mesh
self.splitter.initialize(mesh, self.fade_target)
self.splitter.initialize(mesh)
# cache the current position before a transform takes place
self.gcode.reset_last_position()
def get_z_factor(self, z_pos):
@ -123,8 +125,7 @@ class BedMesh:
# return current position minus the current z-adjustment
x, y, z, e = self.toolhead.get_position()
z_adj = self.z_mesh.calc_z(x, y)
z_adj = (self.get_z_factor(z) * (z_adj - self.fade_target) +
self.fade_target)
z_adj = self.get_z_factor(z) * z_adj + self.fade_target
self.last_position[:] = [x, y, z - z_adj, e]
return list(self.last_position)
def move(self, newpos, speed):
@ -471,9 +472,8 @@ class MoveSplitter:
'move_check_distance', 5., minval=3.)
self.z_mesh = None
self.gcode = gcode
def initialize(self, mesh, fade_offset):
def initialize(self, mesh):
self.z_mesh = mesh
self.fade_offset = fade_offset
def build_move(self, prev_pos, next_pos, factor):
self.prev_pos = tuple(prev_pos)
self.next_pos = tuple(next_pos)
@ -487,7 +487,7 @@ class MoveSplitter:
self.axis_move = [not isclose(d, 0., abs_tol=1e-10) for d in axes_d]
def _calc_z_offset(self, pos):
z = self.z_mesh.calc_z(pos[0], pos[1])
return self.z_factor * (z - self.fade_offset) + self.fade_offset
return self.z_factor * z + self.z_mesh.mesh_offset
def _set_next_move(self, distance_from_prev):
t = distance_from_prev / self.total_move_length
if t > 1. or t < 0.:
@ -530,6 +530,7 @@ class ZMesh:
self.mesh_z_table = None
self.probe_params = params
self.avg_z = 0.
self.mesh_offset = 0.
logging.debug('bed_mesh: probe/mesh parameters:')
for key, value in self.probe_params.iteritems():
logging.debug("%s : %s" % (key, value))
@ -582,7 +583,7 @@ class ZMesh:
msg += "Measured points:\n"
for y_line in range(self.mesh_y_count - 1, -1, -1):
for z in self.mesh_z_table[y_line]:
msg += " %f" % (z)
msg += " %f" % (z + self.mesh_offset)
msg += "\n"
print_func(msg)
else:
@ -596,6 +597,12 @@ class ZMesh:
# z step distances
self.avg_z = round(self.avg_z, 2)
self.print_mesh(logging.debug)
def offset_mesh(self, offset):
if self.mesh_z_table:
self.mesh_offset = offset
for y_line in self.mesh_z_table:
for idx, z in enumerate(y_line):
y_line[idx] = z - self.mesh_offset
def get_x_coordinate(self, index):
return self.mesh_x_min + self.mesh_x_dist * index
def get_y_coordinate(self, index):