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# Copyright (c) 2021, Manfred Moitzi
# License: MIT License
import pytest
import ezdxf
from ezdxf.layouts import VirtualLayout
from ezdxf import bbox, disassemble
from ezdxf.render.forms import square, translate
@pytest.fixture(scope="module")
def points1():
lay = VirtualLayout()
lay.add_point((-1, -2, -3))
lay.add_point((4, 5, 6))
return lay
def test_extend(points1):
box = bbox.extents(points1)
assert box.extmin == (-1, -2, -3)
assert box.extmax == (4, 5, 6)
def test_line():
lay = VirtualLayout()
lay.add_line((0, 0), (10, 0))
lay.add_line((0, 1), (10, 1))
box = bbox.extents(lay)
assert box.extmin == (0, 0, 0)
assert box.extmax == (10, 1, 0)
def solid_entities():
lay = VirtualLayout()
lay.add_solid(translate(square(1), (-10, -10)))
lay.add_solid(translate(square(1), (10, 10)))
return lay
def solid_blockrefs():
doc = ezdxf.new()
blk = doc.blocks.new("Solid")
blk.add_solid(square(1))
msp = doc.modelspace()
msp.add_blockref("Solid", (-10, -10))
msp.add_blockref("Solid", (10, 10))
return msp
def test_empty_cache():
assert bbox.Cache().has_data is False
@pytest.mark.parametrize(
"solids",
[solid_entities(), solid_blockrefs()],
ids=["entities", "blockrefs"],
)
@pytest.mark.parametrize("func", [bbox.multi_flat, bbox.multi_recursive])
def test_multi_boxes(solids, func):
box = list(func(solids))
assert box[0].extmin == (-10, -10)
assert box[0].extmax == (-9, -9)
assert box[1].extmin == (10, 10)
assert box[1].extmax == (11, 11)
def test_cache_usage_without_handles(points1):
# Entities in VirtualLayouts have no handles:
cache = bbox.Cache()
for _ in range(10):
bbox.extents(points1, cache=cache)
assert cache.hits == 0
def test_cache_usage_with_uuids(points1):
# Entities in VirtualLayouts have no handles:
cache = bbox.Cache(uuid=True)
for _ in range(10):
bbox.extents(points1, cache=cache)
assert cache.hits == 18
@pytest.fixture(scope="module")
def msp_solids():
return solid_blockrefs()
@pytest.mark.parametrize("func", [bbox.multi_flat, bbox.extents])
def test_cache_usage_for_flat_multi_boxes(msp_solids, func):
cache = bbox.Cache()
for _ in range(10):
list(func(msp_solids, cache=cache))
# This works because flat processing has not to yield bounding boxes for
# sub entities, caching top level bounding boxes works well.
assert cache.misses == 2 + 2 # first 2xINSERT, 2xSOLID in INSERT
assert cache.hits == 9 * 2 # 9 x 2xINSERT
def test_cache_usage_for_recreation_on_the_fly(msp_solids):
cache = bbox.Cache(uuid=True)
for _ in range(10):
list(bbox.multi_recursive(msp_solids, cache=cache))
# This does not work well, because recursive processing has to yield the
# bounding boxes for all sub entities. These sub entities are created on the
# fly for every call and do not have a handle and always gets a new UUID,
# which is the meaning of an UUID.
# The INSERT entity, which has a handle, gets no own bounding box and is
# therefore not cached.
assert cache.misses == 20
assert cache.hits == 0
@pytest.mark.parametrize(
"func", [bbox.multi_flat, bbox.extents, bbox.multi_recursive]
)
def test_cache_usage_for_reused_virtual_entities(msp_solids, func):
cache = bbox.Cache()
# Create flat entity structure by yourself, so that virtual entities are
# only created once:
entities = list(disassemble.recursive_decompose(msp_solids))
for _ in range(10):
list(func(entities, cache=cache))
# This does not work well by "handle only" usage, because 'entities' contains
# virtual entities which have no handle and therefore are not cached:
# multi_flat and extents, have a second access stage and triggers 2x20 cache
# misses but this is just a cache access issue, this does not trigger 40
# bounding box calculations!
# multi_recursive is the lowest level and has only 20 cache misses.
assert cache.misses in (20, 40) # virtual entities do not have handles
assert cache.hits == 0 # parent INSERT bbox is not calculated and cached
@pytest.mark.parametrize(
"func", [bbox.multi_flat, bbox.extents, bbox.multi_recursive]
)
def test_cache_usage_with_uuids_for_reused_virtual_entities(msp_solids, func):
cache = bbox.Cache(uuid=True)
# Create flat entity structure by yourself, so that virtual entities are
# only created once:
entities = list(disassemble.recursive_decompose(msp_solids))
for _ in range(10):
list(func(entities, cache=cache))
# This works, because virtual entities are cached by UUID
# multi_flat and extents, have a second access stage: 2x2 misses, but
# triggers only 2 bounding box calculations.
# multi_recursive is the lowest level and has only 2 cache misses.
assert cache.misses in (2, 4)
assert cache.hits == 18
@pytest.fixture
def circle():
lay = VirtualLayout()
lay.add_circle((0, 0), radius=100)
return lay
def test_fast_bounding_box_calculation(circle):
box = bbox.extents(circle, fast=True)
assert box.extmin == (-100, -100)
assert box.extmax == (+100, +100)
def test_precise_bounding_box_calculation(circle):
box = bbox.extents(circle, fast=False)
assert box.extmin == (-100, -100)
assert box.extmax == (+100, +100)
if __name__ == "__main__":
pytest.main([__file__])
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