80 lines
3.0 KiB
Python
80 lines
3.0 KiB
Python
"""Evaluate complete-image projection and rectangular surface topology."""
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import bpy
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import numpy as np
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import pytest
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from nodes.groups.image_plane import build_image_plane_group
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from nodes.groups.image_depth_plane import build_image_depth_plane_group
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from nodes.groups.image_relief_plane import build_image_relief_plane_group
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@pytest.fixture
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def surface():
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return create_surface("DEPTH")
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@pytest.fixture
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def relief():
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return create_surface("RELIEF")
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def create_surface(plane_type):
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bpy.ops.wm.read_factory_settings(use_empty=True)
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plane = build_image_plane_group()
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builder = build_image_depth_plane_group if plane_type == "DEPTH" else build_image_relief_plane_group
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group = builder(plane)
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mesh = bpy.data.meshes.new("Rectangle")
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mesh.from_pydata([(-2, 0, -1), (2, 0, -1), (2, 0, 1), (-2, 0, 1)], [], [(0, 1, 2, 3)])
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material = bpy.data.materials.new("Image")
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mesh.materials.append(material)
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obj = bpy.data.objects.new("Surface", mesh)
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bpy.context.collection.objects.link(obj)
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modifier = obj.modifiers.new("Surface", "NODES")
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modifier.node_group = group
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image = bpy.data.images.new("Camera", width=16, height=8, float_buffer=True)
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image.colorspace_settings.name = "Non-Color"
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image.alpha_mode = "CHANNEL_PACKED"
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yy, xx = np.mgrid[:8, :16]
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# Camera principal point is deliberately off center; Y points down.
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pixels = np.ones((8, 16, 4), dtype=np.float32)
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pixels[..., 0] = ((xx + 0.5) - 5) / 4
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pixels[..., 1] = (3 - (yy + 0.5)) / 4
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pixels[..., 2] = 2 + (xx + 0.5) / 16
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pixels[..., 3] = 1
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image.pixels.foreach_set(pixels.ravel())
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inputs = {item.name: item for item in group.interface.items_tree
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if item.item_type == "SOCKET" and item.in_out == "INPUT"}
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def set_value(name, value):
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modifier[inputs[name].identifier] = value
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obj.update_tag(refresh={"DATA"})
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bpy.context.view_layer.update()
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for name, value in (("Subdivide", 2), ("Depth Image", image),
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("Uniform Scale", 0.5), ("Reference Depth", 1.2),
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("Depth Scale", 0.0), ("Thickness", 0.0)):
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set_value(name, value)
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if "Depth Offset" in inputs:
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set_value("Depth Offset", 0.0)
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if "Boundary Smooth" in inputs:
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set_value("Boundary Smooth", 0)
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if "Depth Split" in inputs:
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set_value("Depth Split", 0.0)
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return obj, set_value, plane, inputs, image
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def evaluated(obj):
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result = obj.evaluated_get(bpy.context.evaluated_depsgraph_get())
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mesh = result.to_mesh()
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try:
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return (
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np.array([v.co[:] for v in mesh.vertices]),
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[tuple(face.vertices) for face in mesh.polygons],
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np.array([value.uv[:] for value in mesh.uv_layers["UVMap"].data]) if mesh.uv_layers else np.empty((0, 2)),
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[material.name if material else None for material in mesh.materials],
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[face.material_index for face in mesh.polygons],
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[attr.name for attr in mesh.attributes],
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)
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finally:
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result.to_mesh_clear()
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