def __init__(self, ctx: RenderContext, out: Backend):
# RenderContext contains all information to resolve resources for a
# specific DXF document.
self.ctx = ctx
# DrawingBackend is the interface to the render engine
self.out = out
# Transfer render context info to backend:
ctx.update_backend_configuration(out)
# Parents entities of current entity/sub-entity
self.parent_stack: List[DXFGraphic] = []
# Approximate a full circle by `n` segments, arcs have proportional
# less segments
self.circle_approximation_count = 128
# The sagitta (also known as the versine) is a line segment drawn
# perpendicular to a chord, between the midpoint of that chord and the
# arc of the circle. https://en.wikipedia.org/wiki/Circle not used yet!
# Could be used for all curves CIRCLE, ARC, ELLIPSE and SPLINE
# self.approximation_max_sagitta = 0.01 # for drawing unit = 1m, max
# sagitta = 1cm
# set to None to disable nested polygon detection:
self.nested_polygon_detection = nesting.fast_bbox_detection
def __init__(self,
ctx: RenderContext,
out: Backend,
proxy_graphics: int = USE_PROXY_GRAPHICS):
# RenderContext contains all information to resolve resources for a
# specific DXF document.
self.ctx = ctx
# DrawingBackend is the interface to the render engine
self.out = out
# To get proxy graphics support proxy graphics have to be loaded:
# Set the global option ezdxf.options.load_proxy_graphics to True.
# How to handle proxy graphics:
# 0 = ignore proxy graphics
# 1 = use proxy graphics if no rendering support by ezdxf exist
# 2 = prefer proxy graphics over ezdxf rendering
self.proxy_graphics = proxy_graphics
# Transfer render context info to backend:
ctx.update_backend_configuration(out)
# Parents entities of current entity/sub-entity
self.parent_stack: List[DXFGraphic] = []
# Approximate a full circle by `n` segments, arcs have proportional
# less segments
self.circle_approximation_count = 128
# The sagitta (also known as the versine) is a line segment drawn
# perpendicular to a chord, between the midpoint of that chord and the
# arc of the circle. https://en.wikipedia.org/wiki/Circle not used yet!
# Could be used for all curves CIRCLE, ARC, ELLIPSE and SPLINE
# self.approximation_max_sagitta = 0.01 # for drawing unit = 1m, max
# sagitta = 1cm
# set to None to disable nested polygon detection:
self.nested_polygon_detection = fast_bbox_detection
self._dispatch = self._build_dispatch_table()