tweak the fit of the parts
This commit is contained in:
Nick Estes
@@ -0,0 +1,82 @@
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After Width: | Height: | Size: 7.8 KiB |
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Load Diff
@@ -0,0 +1,101 @@
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"""Render aligned lid-base and accent STLs with distinct materials."""
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import os
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import sys
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import math
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import bpy
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from mathutils import Matrix, Vector
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def import_mesh(path, name, color):
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bpy.ops.wm.stl_import(filepath=os.path.abspath(path))
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model = bpy.context.selected_objects[0]
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model.name = name
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material = bpy.data.materials.new(f"{name} material")
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material.diffuse_color = color
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material.metallic = 0.0
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material.roughness = 0.45
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model.data.materials.append(material)
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return model
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def look_at(camera, target):
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direction = Vector(target) - camera.location
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camera.rotation_euler = direction.to_track_quat("-Z", "Y").to_euler()
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def main():
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args = sys.argv[sys.argv.index("--") + 1 :]
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if len(args) not in (4, 5):
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raise SystemExit(
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"expected: lid-base.stl lid-accent.stl output-directory basename [orientation]"
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)
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base_path, accent_path, output_dir, basename = args[:4]
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orientation = args[4] if len(args) == 5 else "usb_left"
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angles = {"usb_left": 0, "usb_front": 90, "usb_right": 180, "usb_rear": 270}
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if orientation not in angles:
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raise SystemExit(f"unknown lid orientation: {orientation}")
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os.makedirs(output_dir, exist_ok=True)
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bpy.ops.wm.read_factory_settings(use_empty=True)
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models = [
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import_mesh(base_path, "Lid base", (0.16, 0.42, 0.72, 1.0)),
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import_mesh(accent_path, "Accent inlays", (0.95, 0.42, 0.08, 1.0)),
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]
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# Lid exports are print-oriented with the decorated exterior face down.
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# Turn both aligned parts over and present the configured USB edge in its
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# named position so previews inspect the finished face as the user will.
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for model in models:
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model.matrix_world = (
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Matrix.Rotation(math.radians(angles[orientation]), 4, "Z")
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@ Matrix.Rotation(math.pi, 4, "X")
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)
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bpy.context.view_layer.update()
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corners = [obj.matrix_world @ Vector(corner) for obj in models for corner in obj.bound_box]
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mins = Vector([min(v[i] for v in corners) for i in range(3)])
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maxs = Vector([max(v[i] for v in corners) for i in range(3)])
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center = (mins + maxs) / 2
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span = max(maxs - mins)
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world = bpy.data.worlds.new("Inspection world")
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world.use_nodes = True
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world.node_tree.nodes["Background"].inputs["Color"].default_value = (0.035, 0.04, 0.05, 1)
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world.node_tree.nodes["Background"].inputs["Strength"].default_value = 0.5
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bpy.context.scene.world = world
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camera_data = bpy.data.cameras.new("Camera")
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camera = bpy.data.objects.new("Camera", camera_data)
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bpy.context.collection.objects.link(camera)
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bpy.context.scene.camera = camera
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camera.data.type = "ORTHO"
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camera.data.ortho_scale = span * 1.35
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key_data = bpy.data.lights.new("Key", type="AREA")
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key_data.energy = 900
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key_data.size = span
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key = bpy.data.objects.new("Key", key_data)
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key.location = center + Vector((span, -span, span * 1.5))
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bpy.context.collection.objects.link(key)
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scene = bpy.context.scene
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scene.render.engine = "BLENDER_WORKBENCH"
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scene.render.resolution_x = 800
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scene.render.resolution_y = 600
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scene.render.resolution_percentage = 100
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scene.render.image_settings.file_format = "PNG"
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scene.display.shading.light = "STUDIO"
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scene.display.shading.color_type = "MATERIAL"
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scene.display.shading.show_shadows = True
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scene.display.shading.show_cavity = True
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scene.display.shading.cavity_type = "BOTH"
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for view, direction in {"iso": (1, -1, 0.8), "top": (0, 0, 1)}.items():
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camera.location = center + Vector(direction).normalized() * span * 2.2
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look_at(camera, center)
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scene.render.filepath = os.path.join(output_dir, f"{basename}_{view}.png")
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bpy.ops.render.render(write_still=True)
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if __name__ == "__main__":
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main()
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@@ -0,0 +1,127 @@
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"""Render six inspection views of an STL using Blender.
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Usage:
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blender --background --python tools/render_stl_previews.py -- \
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input.stl output-directory basename [comma-separated-views]
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"""
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import os
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import sys
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import bpy
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from mathutils import Vector
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|
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def arguments():
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args = sys.argv[sys.argv.index("--") + 1 :]
|
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if len(args) not in (3, 4):
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raise SystemExit(
|
||||
"expected: input.stl output-directory basename [comma-separated-views]"
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)
|
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requested_views = args[3].split(",") if len(args) == 4 else None
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return args[0], args[1], args[2], requested_views
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def look_at(camera, target):
|
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direction = Vector(target) - camera.location
|
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camera.rotation_euler = direction.to_track_quat("-Z", "Y").to_euler()
|
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|
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def render_view(camera, center, span, name, direction, output_dir, basename):
|
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distance = span * 2.2
|
||||
camera.location = Vector(center) + Vector(direction).normalized() * distance
|
||||
look_at(camera, center)
|
||||
camera.data.type = "ORTHO"
|
||||
camera.data.ortho_scale = span * 1.35
|
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bpy.context.scene.render.filepath = os.path.join(
|
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output_dir, f"{basename}_{name}.png"
|
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)
|
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bpy.ops.render.render(write_still=True)
|
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|
||||
|
||||
def main():
|
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input_path, output_dir, basename, requested_views = arguments()
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os.makedirs(output_dir, exist_ok=True)
|
||||
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bpy.ops.wm.read_factory_settings(use_empty=True)
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bpy.ops.wm.stl_import(filepath=os.path.abspath(input_path))
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model = bpy.context.selected_objects[0]
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model.name = "Feather case"
|
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material = bpy.data.materials.new("Case material")
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material.diffuse_color = (0.16, 0.42, 0.72, 1.0)
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material.metallic = 0.0
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material.roughness = 0.45
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model.data.materials.append(material)
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corners = [model.matrix_world @ Vector(corner) for corner in model.bound_box]
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mins = Vector([min(v[i] for v in corners) for i in range(3)])
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maxs = Vector([max(v[i] for v in corners) for i in range(3)])
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center = (mins + maxs) / 2
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span = max(maxs - mins)
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world = bpy.data.worlds.new("Inspection world")
|
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world.use_nodes = True
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||||
world.node_tree.nodes["Background"].inputs["Color"].default_value = (
|
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0.035,
|
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0.04,
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0.05,
|
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1,
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)
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world.node_tree.nodes["Background"].inputs["Strength"].default_value = 0.5
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bpy.context.scene.world = world
|
||||
|
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camera_data = bpy.data.cameras.new("Camera")
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camera = bpy.data.objects.new("Camera", camera_data)
|
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bpy.context.collection.objects.link(camera)
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bpy.context.scene.camera = camera
|
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key_data = bpy.data.lights.new("Key", type="AREA")
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key_data.energy = 900
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key_data.shape = "DISK"
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key_data.size = span
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||||
key = bpy.data.objects.new("Key", key_data)
|
||||
key.location = center + Vector((span, -span, span * 1.5))
|
||||
bpy.context.collection.objects.link(key)
|
||||
|
||||
fill_data = bpy.data.lights.new("Fill", type="AREA")
|
||||
fill_data.energy = 500
|
||||
fill_data.size = span
|
||||
fill = bpy.data.objects.new("Fill", fill_data)
|
||||
fill.location = center + Vector((-span, span, span))
|
||||
bpy.context.collection.objects.link(fill)
|
||||
|
||||
scene = bpy.context.scene
|
||||
scene.render.engine = "BLENDER_WORKBENCH"
|
||||
scene.render.resolution_x = 800
|
||||
scene.render.resolution_y = 600
|
||||
scene.render.resolution_percentage = 100
|
||||
scene.render.image_settings.file_format = "PNG"
|
||||
scene.render.film_transparent = False
|
||||
scene.display.shading.light = "STUDIO"
|
||||
scene.display.shading.color_type = "MATERIAL"
|
||||
scene.display.shading.show_shadows = True
|
||||
scene.display.shading.show_cavity = True
|
||||
scene.display.shading.cavity_type = "BOTH"
|
||||
scene.display.shading.curvature_ridge_factor = 1.5
|
||||
scene.display.shading.curvature_valley_factor = 1.2
|
||||
|
||||
views = {
|
||||
"iso": (1, -1, 0.8),
|
||||
"front": (-1, 0, 0),
|
||||
"back": (1, 0, 0),
|
||||
"left": (0, -1, 0),
|
||||
"right": (0, 1, 0),
|
||||
"top": (0, 0, 1),
|
||||
}
|
||||
selected = requested_views or list(views)
|
||||
unknown = sorted(set(selected) - set(views))
|
||||
if unknown:
|
||||
raise SystemExit(f"unknown views: {', '.join(unknown)}")
|
||||
for name in selected:
|
||||
direction = views[name]
|
||||
render_view(camera, center, span, name, direction, output_dir, basename)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
Reference in New Issue
Block a user