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first layer extrusion

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This commit is contained in:
Nicolas Predella 2026-07-20 16:57:33 +03:00
parent ae911884cc
commit 62dd49c6d2
2 changed files with 11 additions and 2 deletions
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7
core/nodeslicer/nodes/path.py
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@ -105,6 +105,13 @@ class SLICENODE_SliceShells(SliceNode):
if fl_height is not None:
slices.first_layer_height = fl_height
if len(z_values) > 0 and fl_height is not None and layer_height > 0:
mult = fl_height / layer_height
z_first = z_values[0]
for i, p in enumerate(slices):
if len(p) > 0 and abs(p[0, 2] - z_first) < 1e-4:
slices.extrusion_rate[i] = slices.extrusion_rate[i] * mult
if rotation and any(rotation):
from mathutils import Euler
mat_inv = np.array(Euler(rotation).to_matrix())

6
tests/test_slice.py
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@ -528,9 +528,11 @@ class TestSlice(unittest.TestCase):
node.resolve = lambda name: scoll if name == "Mesh" else (0.2 if name == "Layer Height" else (0.3 if name == "First Layer Height" else None))
slices = node.evaluate_output("Paths")
self.assertTrue(len(slices) > 0)
# First slice Z should be 0.3 / 2 = 0.15
self.assertAlmostEqual(slices[0][0, 2], 0.15)
# First slice Z should be min_z + fl_height = 0.0 + 0.3 = 0.3
self.assertAlmostEqual(slices[0][0, 2], 0.3)
self.assertEqual(getattr(slices, "first_layer_height", None), 0.3)
# First layer extrusion rates should be multiplied by 0.3 / 0.2 = 1.5
np.testing.assert_allclose(slices.extrusion_rate[0], 1.5)
if __name__ == '__main__':
unittest.main()