39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
import numpy as np
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import pytest
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from tests.support.materials import image_layer
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from nodes.groups.image_depth_layer import build_image_depth_layer_group
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def test_alpha_curve_preserves_endpoints_and_suppresses_soft_edges(image_layer):
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inputs = {
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item.name: item for item in image_layer.interface.items_tree
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if item.item_type == "SOCKET" and item.in_out == "INPUT"
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}
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assert list(inputs) == [
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"Color", "Alpha", "Normal", "Normal Scale", "Bump Scale",
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"Alpha Fix", "Object Space",
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]
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output = next(node for node in image_layer.nodes if node.type == "GROUP_OUTPUT")
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curve = output.inputs["Alpha"].links[0].from_node
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assert curve.type == "CURVE_FLOAT"
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assert curve.inputs["Value"].links[0].from_socket.name == "Alpha"
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assert curve.inputs["Factor"].links[0].from_socket.name == "Alpha Fix"
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mapping = curve.mapping
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samples = np.array([
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mapping.evaluate(mapping.curves[0], float(alpha))
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for alpha in np.linspace(0, 1, 1001)
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])
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np.testing.assert_allclose(samples[:801], 0, atol=3e-4)
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assert samples[-1] == pytest.approx(1)
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def test_depth_layer_keeps_foreground_alpha_threshold(image_layer):
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depth = build_image_depth_layer_group()
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output = next(node for node in depth.nodes if node.type == "GROUP_OUTPUT")
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threshold = output.inputs["Alpha"].links[0].from_node
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assert threshold.operation == "GREATER_THAN"
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assert threshold.inputs[1].default_value == 0.5
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assert threshold.inputs[0].links[0].from_socket.name == "Alpha"
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