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fix: use scene scale correctly in Gcode to Preview Mesh node

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This commit is contained in:
Nicolas Predella 2026-07-13 13:32:41 +03:00
parent 2eaafd0c97
commit 6ac6fef685
1 changed files with 9 additions and 4 deletions
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13
core/nodeslicer/nodes/preview.py
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@ -34,6 +34,11 @@ class SLICENODE_GcodeToMesh(ExecSliceNode):
edges = []
e_rates = []
scale_length = 1.0
if bpy.context.scene and bpy.context.scene.unit_settings:
scale_length = bpy.context.scene.unit_settings.scale_length
scale_factor = 0.001 / scale_length
last_x, last_y, last_z = 0.0, 0.0, 0.0
last_e = 0.0
@ -71,10 +76,10 @@ class SLICENODE_GcodeToMesh(ExecSliceNode):
for p in parts[1:]:
if len(p) < 2: continue
try:
# Scale coordinates by 0.001 (mm to Blender units)
# Scale coordinates by scene scale factor (mm to Blender units)
val = float(p[1:])
if p[0].upper() in 'XYZ':
val *= 0.001
val *= scale_factor
params[p[0].upper()] = val
except ValueError: continue
@ -89,12 +94,12 @@ class SLICENODE_GcodeToMesh(ExecSliceNode):
if show:
# Subtract offsets (scaled to Blender units) to return to original space
ox, oy = offset_x * 0.001, offset_y * 0.001
ox, oy = offset_x * scale_factor, offset_y * scale_factor
p1 = (last_x - ox, last_y - oy, last_z)
p2 = (new_x - ox, new_y - oy, new_z)
# Calculate e_rate (proportion between E and default_extrusion_rate)
seg_len_mm = segment_length_3d(p1, p2) * 1000.0
seg_len_mm = segment_length_3d(p1, p2) * (1000.0 * scale_length)
if seg_len_mm > 0 and custom_default_extrusion_rate > 0:
e_rate = (new_e / seg_len_mm) / custom_default_extrusion_rate
else: