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# Copyright (c) 2021, Manfred Moitzi
# License: MIT License
import time
import math
from ezdxf.math import BoundingBox, Vec3
from ezdxf.render.forms import circle
import ezdxf.path
LARGE_PATH = ezdxf.path.from_vertices(circle(100, radius=10))
def current_fast_bbox():
ezdxf.path.bbox((LARGE_PATH, ), fast=True)
def current_precise_bbox():
ezdxf.path.bbox((LARGE_PATH, ), fast=False)
def new_fast_bbox():
fast_bbox(LARGE_PATH)
def fast_bbox(path) -> BoundingBox:
# it's much slower!
bbox = BoundingBox()
if len(path) == 0:
return bbox
min_x = math.inf
min_y = math.inf
min_z = math.inf
max_x = -math.inf
max_y = -math.inf
max_z = -math.inf
for x, y, z in path.control_vertices():
min_x = min(min_x, x)
min_y = min(min_y, y)
min_z = min(min_z, z)
max_x = max(max_x, x)
max_y = max(max_y, y)
max_z = max(max_z, z)
bbox.extend([Vec3(min_x, min_y, min_z), Vec3(max_x, max_y, max_z)])
return bbox
def profile(text, func, runs):
t0 = time.perf_counter()
for _ in range(runs):
func()
t1 = time.perf_counter()
t = t1 - t0
print(f"{text} {t:.3f}s")
RUNS = 10_000
print(f"Profiling bounding box calculation:")
profile(f"current_precise_bbox() {RUNS}:", current_precise_bbox, RUNS)
profile(f"current_fast_bbox() {RUNS}:", current_fast_bbox, RUNS)
profile(f"new_fast_bbox() {RUNS}:", new_fast_bbox, RUNS)
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