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# Copyright (c) 2023, Manfred Moitzi
# License: MIT License
import pytest
from ezdxf.math import Vec2
from ezdxf.path import Path
from ezdxf.npshapes import NumpyPath2d
from ezdxf.addons.drawing import hpgl2, layout
from ezdxf.addons.drawing.properties import BackendProperties
def test_empty_page():
backend = hpgl2.PlotterBackend()
backend.draw_point(Vec2(0, 0), BackendProperties())
assert backend.get_bytes(layout.Page(0, 0)) == b""
class TestPlotterBackend:
@pytest.fixture(scope="class")
def properties(self):
return BackendProperties(color="#ff0000", lineweight=0.25)
@pytest.fixture(scope="class")
def result1(self, properties):
backend = hpgl2.PlotterBackend()
backend.draw_line(Vec2(0, 0), Vec2(100, 100), properties)
return backend.compatible(layout.Page(0, 0))
def test_enter_hpgl2_mode_prefix(self,result1):
assert result1.startswith(b"%0B;")
def test_init_commands_exist(self, result1):
assert b"IN;" in result1
assert b"BP;" in result1
assert b"PS4000,4000;" in result1 # 40 plu = 1mm
def test_pen_color_setup_exist(self, result1):
assert b"PC1,255,0,0;" in result1
def test_set_pen_command_exist(self, result1):
assert b"SP1;" in result1
def test_pen_width_command_exist(self, result1):
assert b"PW0.25;" in result1
def test_lines_are_7_bit_int_base_32_polyline_encoded(self, result1):
assert b"PE7<=__?Yf?Yf;" in result1
def test_curves_are_ascii_encoded_relative_bezier_curves(self, properties):
path = Path((0, 0))
path.curve4_to((100, 100), (25, 0), (75, 100))
backend = hpgl2.PlotterBackend()
backend.draw_path(NumpyPath2d(path), properties)
result = backend.high_quality(layout.Page(0, 0))
assert b"PU;PA0,0;PD;BR1000,0,3000,4000,4000,4000;PU;" in result
if __name__ == '__main__':
pytest.main([__file__])
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