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703 lines
27 KiB
Python
703 lines
27 KiB
Python
"""
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Pather with batched (multi-step) rendering
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"""
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from typing import Self, Sequence, Mapping, MutableMapping
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import copy
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import logging
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from collections import defaultdict
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from pprint import pformat
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import numpy
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from numpy import pi
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from numpy.typing import ArrayLike
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from ..pattern import Pattern
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from ..library import ILibrary
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from ..error import PortError, BuildError
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from ..ports import PortList, Port
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from ..abstract import Abstract
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from ..utils import SupportsBool
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from .tools import Tool, RenderStep
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from .utils import ell
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logger = logging.getLogger(__name__)
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class RenderPather(PortList):
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"""
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`RenderPather` is an alternative to `Pather` which uses the `path`/`path_to`/`mpath`
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functions to plan out wire paths without incrementally generating the layout. Instead,
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it waits until `render` is called, at which point it draws all the planned segments
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simultaneously. This allows it to e.g. draw each wire using a single `Path` or
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`Polygon` shape instead of multiple rectangles.
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`RenderPather` calls out to `Tool.planL` and `Tool.render` to provide tool-specific
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dimensions and build the final geometry for each wire. `Tool.planL` provides the
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output port data (relative to the input) for each segment. The tool, input and output
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ports are placed into a `RenderStep`, and a sequence of `RenderStep`s is stored for
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each port. When `render` is called, it bundles `RenderStep`s into batches which use
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the same `Tool`, and passes each batch to the relevant tool's `Tool.render` to build
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the geometry.
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See `Pather` for routing examples. After routing is complete, `render` must be called
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to generate the final geometry.
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"""
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__slots__ = ('pattern', 'library', 'paths', 'tools', '_dead', )
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pattern: Pattern
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""" Layout of this device """
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library: ILibrary
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""" Library from which patterns should be referenced """
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_dead: bool
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""" If True, plug()/place() are skipped (for debugging) """
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paths: defaultdict[str, list[RenderStep]]
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""" Per-port list of operations, to be used by `render` """
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tools: dict[str | None, Tool]
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"""
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Tool objects are used to dynamically generate new single-use Devices
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(e.g wires or waveguides) to be plugged into this device.
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"""
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@property
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def ports(self) -> dict[str, Port]:
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return self.pattern.ports
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@ports.setter
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def ports(self, value: dict[str, Port]) -> None:
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self.pattern.ports = value
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def __init__(
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self,
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library: ILibrary,
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*,
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pattern: Pattern | None = None,
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ports: str | Mapping[str, Port] | None = None,
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tools: Tool | MutableMapping[str | None, Tool] | None = None,
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name: str | None = None,
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) -> None:
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"""
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Args:
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library: The library from which referenced patterns will be taken,
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and where new patterns (e.g. generated by the `tools`) will be placed.
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pattern: The pattern which will be modified by subsequent operations.
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If `None` (default), a new pattern is created.
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ports: Allows specifying the initial set of ports, if `pattern` does
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not already have any ports (or is not provided). May be a string,
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in which case it is interpreted as a name in `library`.
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Default `None` (no ports).
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tools: A mapping of {port: tool} which specifies what `Tool` should be used
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to generate waveguide or wire segments when `path`/`path_to`/`mpath`
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are called. Relies on `Tool.planL` and `Tool.render` implementations.
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name: If specified, `library[name]` is set to `self.pattern`.
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"""
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self._dead = False
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self.paths = defaultdict(list)
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self.library = library
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if pattern is not None:
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self.pattern = pattern
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else:
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self.pattern = Pattern()
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if ports is not None:
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if self.pattern.ports:
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raise BuildError('Ports supplied for pattern with pre-existing ports!')
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if isinstance(ports, str):
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if library is None:
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raise BuildError('Ports given as a string, but `library` was `None`!')
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ports = library.abstract(ports).ports
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self.pattern.ports.update(copy.deepcopy(dict(ports)))
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if name is not None:
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if library is None:
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raise BuildError('Name was supplied, but no library was given!')
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library[name] = self.pattern
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if tools is None:
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self.tools = {}
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elif isinstance(tools, Tool):
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self.tools = {None: tools}
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else:
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self.tools = dict(tools)
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@classmethod
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def interface(
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cls,
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source: PortList | Mapping[str, Port] | str,
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*,
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library: ILibrary | None = None,
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tools: Tool | MutableMapping[str | None, Tool] | None = None,
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in_prefix: str = 'in_',
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out_prefix: str = '',
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port_map: dict[str, str] | Sequence[str] | None = None,
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name: str | None = None,
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) -> 'RenderPather':
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"""
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Wrapper for `Pattern.interface()`, which returns a RenderPather instead.
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Args:
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source: A collection of ports (e.g. Pattern, Builder, or dict)
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from which to create the interface. May be a pattern name if
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`library` is provided.
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library: Library from which existing patterns should be referenced,
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and to which the new one should be added (if named). If not provided,
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`source.library` must exist and will be used.
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tools: `Tool`s which will be used by the pather for generating new wires
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or waveguides (via `path`/`path_to`/`mpath`).
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in_prefix: Prepended to port names for newly-created ports with
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reversed directions compared to the current device.
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out_prefix: Prepended to port names for ports which are directly
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copied from the current device.
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port_map: Specification for ports to copy into the new device:
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- If `None`, all ports are copied.
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- If a sequence, only the listed ports are copied
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- If a mapping, the listed ports (keys) are copied and
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renamed (to the values).
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Returns:
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The new `RenderPather`, with an empty pattern and 2x as many ports as
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listed in port_map.
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Raises:
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`PortError` if `port_map` contains port names not present in the
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current device.
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`PortError` if applying the prefixes results in duplicate port
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names.
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"""
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if library is None:
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if hasattr(source, 'library') and isinstance(source.library, ILibrary):
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library = source.library
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else:
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raise BuildError('No library provided (and not present in `source.library`')
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if tools is None and hasattr(source, 'tools') and isinstance(source.tools, dict):
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tools = source.tools
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if isinstance(source, str):
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source = library.abstract(source).ports
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pat = Pattern.interface(source, in_prefix=in_prefix, out_prefix=out_prefix, port_map=port_map)
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new = RenderPather(library=library, pattern=pat, name=name, tools=tools)
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return new
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def plug(
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self,
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other: Abstract | str,
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map_in: dict[str, str],
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map_out: dict[str, str | None] | None = None,
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*,
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mirrored: bool = False,
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inherit_name: bool = True,
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set_rotation: bool | None = None,
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append: bool = False,
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) -> Self:
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"""
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Wrapper for `Pattern.plug` which adds a `RenderStep` with opcode 'P'
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for any affected ports. This separates any future `RenderStep`s on the
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same port into a new batch, since the plugged device interferes with drawing.
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Args:
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other: An `Abstract`, string, or `Pattern` describing the device to be instatiated.
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map_in: dict of `{'self_port': 'other_port'}` mappings, specifying
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port connections between the two devices.
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map_out: dict of `{'old_name': 'new_name'}` mappings, specifying
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new names for ports in `other`.
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mirrored: Enables mirroring `other` across the x axis prior to
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connecting any ports.
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inherit_name: If `True`, and `map_in` specifies only a single port,
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and `map_out` is `None`, and `other` has only two ports total,
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then automatically renames the output port of `other` to the
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name of the port from `self` that appears in `map_in`. This
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makes it easy to extend a device with simple 2-port devices
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(e.g. wires) without providing `map_out` each time `plug` is
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called. See "Examples" above for more info. Default `True`.
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set_rotation: If the necessary rotation cannot be determined from
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the ports being connected (i.e. all pairs have at least one
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port with `rotation=None`), `set_rotation` must be provided
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to indicate how much `other` should be rotated. Otherwise,
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`set_rotation` must remain `None`.
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append: If `True`, `other` is appended instead of being referenced.
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Note that this does not flatten `other`, so its refs will still
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be refs (now inside `self`).
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Returns:
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self
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Raises:
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`PortError` if any ports specified in `map_in` or `map_out` do not
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exist in `self.ports` or `other_names`.
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`PortError` if there are any duplicate names after `map_in` and `map_out`
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are applied.
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`PortError` if the specified port mapping is not achieveable (the ports
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do not line up)
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"""
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if self._dead:
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logger.error('Skipping plug() since device is dead')
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return self
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other_tgt: Pattern | Abstract
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if isinstance(other, str):
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other_tgt = self.library.abstract(other)
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if append and isinstance(other, Abstract):
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other_tgt = self.library[other.name]
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# get rid of plugged ports
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for kk in map_in.keys():
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if kk in self.paths:
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self.paths[kk].append(RenderStep('P', None, self.ports[kk].copy(), self.ports[kk].copy(), None))
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plugged = map_in.values()
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for name, port in other_tgt.ports.items():
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if name in plugged:
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continue
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new_name = map_out.get(name, name) if map_out is not None else name
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if new_name is not None and new_name in self.paths:
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self.paths[new_name].append(RenderStep('P', None, port.copy(), port.copy(), None))
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self.pattern.plug(
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other=other_tgt,
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map_in=map_in,
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map_out=map_out,
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mirrored=mirrored,
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inherit_name=inherit_name,
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set_rotation=set_rotation,
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append=append,
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)
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return self
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def place(
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self,
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other: Abstract | str,
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*,
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offset: ArrayLike = (0, 0),
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rotation: float = 0,
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pivot: ArrayLike = (0, 0),
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mirrored: bool = False,
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port_map: dict[str, str | None] | None = None,
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skip_port_check: bool = False,
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append: bool = False,
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) -> Self:
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"""
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Wrapper for `Pattern.place` which adds a `RenderStep` with opcode 'P'
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for any affected ports. This separates any future `RenderStep`s on the
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same port into a new batch, since the placed device interferes with drawing.
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Note that mirroring is applied before rotation; translation (`offset`) is applied last.
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Args:
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other: An `Abstract` or `Pattern` describing the device to be instatiated.
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offset: Offset at which to place the instance. Default (0, 0).
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rotation: Rotation applied to the instance before placement. Default 0.
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pivot: Rotation is applied around this pivot point (default (0, 0)).
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Rotation is applied prior to translation (`offset`).
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mirrored: Whether theinstance should be mirrored across the x axis.
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Mirroring is applied before translation and rotation.
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port_map: dict of `{'old_name': 'new_name'}` mappings, specifying
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new names for ports in the instantiated pattern. New names can be
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`None`, which will delete those ports.
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skip_port_check: Can be used to skip the internal call to `check_ports`,
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in case it has already been performed elsewhere.
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append: If `True`, `other` is appended instead of being referenced.
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Note that this does not flatten `other`, so its refs will still
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be refs (now inside `self`).
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Returns:
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self
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Raises:
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`PortError` if any ports specified in `map_in` or `map_out` do not
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exist in `self.ports` or `other.ports`.
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`PortError` if there are any duplicate names after `map_in` and `map_out`
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are applied.
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"""
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if self._dead:
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logger.error('Skipping place() since device is dead')
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return self
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other_tgt: Pattern | Abstract
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if isinstance(other, str):
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other_tgt = self.library.abstract(other)
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if append and isinstance(other, Abstract):
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other_tgt = self.library[other.name]
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for name, port in other_tgt.ports.items():
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new_name = port_map.get(name, name) if port_map is not None else name
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if new_name is not None and new_name in self.paths:
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self.paths[new_name].append(RenderStep('P', None, port.copy(), port.copy(), None))
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self.pattern.place(
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other=other_tgt,
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offset=offset,
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rotation=rotation,
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pivot=pivot,
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mirrored=mirrored,
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port_map=port_map,
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skip_port_check=skip_port_check,
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append=append,
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)
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return self
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def retool(
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self,
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tool: Tool,
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keys: str | Sequence[str | None] | None = None,
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) -> Self:
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"""
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Update the `Tool` which will be used when generating `Pattern`s for the ports
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given by `keys`.
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Args:
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tool: The new `Tool` to use for the given ports.
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keys: Which ports the tool should apply to. `None` indicates the default tool,
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used when there is no matching entry in `self.tools` for the port in question.
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Returns:
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self
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"""
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if keys is None or isinstance(keys, str):
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self.tools[keys] = tool
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else:
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for key in keys:
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self.tools[key] = tool
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return self
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def path(
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self,
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portspec: str,
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ccw: SupportsBool | None,
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length: float,
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**kwargs,
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) -> Self:
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"""
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Plan a "wire"/"waveguide" extending from the port `portspec`, with the aim
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of traveling exactly `length` distance.
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The wire will travel `length` distance along the port's axis, an an unspecified
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(tool-dependent) distance in the perpendicular direction. The output port will
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be rotated (or not) based on the `ccw` parameter.
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`RenderPather.render` must be called after all paths have been fully planned.
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Args:
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portspec: The name of the port into which the wire will be plugged.
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ccw: If `None`, the output should be along the same axis as the input.
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Otherwise, cast to bool and turn counterclockwise if True
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and clockwise otherwise.
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length: The total distance from input to output, along the input's axis only.
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(There may be a tool-dependent offset along the other axis.)
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Returns:
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self
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Raises:
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BuildError if `distance` is too small to fit the bend (if a bend is present).
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LibraryError if no valid name could be picked for the pattern.
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"""
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if self._dead:
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logger.error('Skipping path() since device is dead')
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return self
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port = self.pattern[portspec]
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in_ptype = port.ptype
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port_rot = port.rotation
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assert port_rot is not None # TODO allow manually setting rotation for RenderPather.path()?
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tool = self.tools.get(portspec, self.tools[None])
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# ask the tool for bend size (fill missing dx or dy), check feasibility, and get out_ptype
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out_port, data = tool.planL(ccw, length, in_ptype=in_ptype, **kwargs)
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# Update port
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out_port.rotate_around((0, 0), pi + port_rot)
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out_port.translate(port.offset)
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step = RenderStep('L', tool, port.copy(), out_port.copy(), data)
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self.paths[portspec].append(step)
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self.pattern.ports[portspec] = out_port.copy()
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return self
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def path_to(
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self,
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portspec: str,
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ccw: SupportsBool | None,
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position: float | None = None,
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*,
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x: float | None = None,
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y: float | None = None,
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**kwargs,
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) -> Self:
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"""
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Plan a "wire"/"waveguide" extending from the port `portspec`, with the aim
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of ending exactly at a target position.
|
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The wire will travel so that the output port will be placed at exactly the target
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position along the input port's axis. There can be an unspecified (tool-dependent)
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offset in the perpendicular direction. The output port will be rotated (or not)
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based on the `ccw` parameter.
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`RenderPather.render` must be called after all paths have been fully planned.
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Args:
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portspec: The name of the port into which the wire will be plugged.
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ccw: If `None`, the output should be along the same axis as the input.
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Otherwise, cast to bool and turn counterclockwise if True
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and clockwise otherwise.
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position: The final port position, along the input's axis only.
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(There may be a tool-dependent offset along the other axis.)
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Only one of `position`, `x`, and `y` may be specified.
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x: The final port position along the x axis.
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`portspec` must refer to a horizontal port if `x` is passed, otherwise a
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BuildError will be raised.
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y: The final port position along the y axis.
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`portspec` must refer to a vertical port if `y` is passed, otherwise a
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BuildError will be raised.
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Returns:
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self
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Raises:
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BuildError if `position`, `x`, or `y` is too close to fit the bend (if a bend
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is present).
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BuildError if `x` or `y` is specified but does not match the axis of `portspec`.
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BuildError if more than one of `x`, `y`, and `position` is specified.
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"""
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if self._dead:
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logger.error('Skipping path_to() since device is dead')
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return self
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pos_count = sum(vv is not None for vv in (position, x, y))
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if pos_count > 1:
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raise BuildError('Only one of `position`, `x`, and `y` may be specified at once')
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if pos_count < 1:
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raise BuildError('One of `position`, `x`, and `y` must be specified')
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port = self.pattern[portspec]
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if port.rotation is None:
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raise PortError(f'Port {portspec} has no rotation and cannot be used for path_to()')
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if not numpy.isclose(port.rotation % (pi / 2), 0):
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raise BuildError('path_to was asked to route from non-manhattan port')
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is_horizontal = numpy.isclose(port.rotation % pi, 0)
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if is_horizontal:
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if y is not None:
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raise BuildError('Asked to path to y-coordinate, but port is horizontal')
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if position is None:
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position = x
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else:
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|
if x is not None:
|
|
raise BuildError('Asked to path to x-coordinate, but port is vertical')
|
|
if position is None:
|
|
position = y
|
|
|
|
x0, y0 = port.offset
|
|
if is_horizontal:
|
|
if numpy.sign(numpy.cos(port.rotation)) == numpy.sign(position - x0):
|
|
raise BuildError(f'path_to routing to behind source port: x0={x0:g} to {position:g}')
|
|
length = numpy.abs(position - x0)
|
|
else:
|
|
if numpy.sign(numpy.sin(port.rotation)) == numpy.sign(position - y0):
|
|
raise BuildError(f'path_to routing to behind source port: y0={y0:g} to {position:g}')
|
|
length = numpy.abs(position - y0)
|
|
|
|
return self.path(portspec, ccw, length, **kwargs)
|
|
|
|
def mpath(
|
|
self,
|
|
portspec: str | Sequence[str],
|
|
ccw: SupportsBool | None,
|
|
*,
|
|
spacing: float | ArrayLike | None = None,
|
|
set_rotation: float | None = None,
|
|
**kwargs,
|
|
) -> Self:
|
|
"""
|
|
`mpath` is a superset of `path` and `path_to` which can act on bundles or buses
|
|
of "wires or "waveguides".
|
|
|
|
See `Pather.mpath` for details.
|
|
|
|
Args:
|
|
portspec: The names of the ports which are to be routed.
|
|
ccw: If `None`, the outputs should be along the same axis as the inputs.
|
|
Otherwise, cast to bool and turn 90 degrees counterclockwise if `True`
|
|
and clockwise otherwise.
|
|
spacing: Center-to-center distance between output ports along the input port's axis.
|
|
Must be provided if (and only if) `ccw` is not `None`.
|
|
set_rotation: If the provided ports have `rotation=None`, this can be used
|
|
to set a rotation for them.
|
|
|
|
Returns:
|
|
self
|
|
|
|
Raises:
|
|
BuildError if the implied length for any wire is too close to fit the bend
|
|
(if a bend is requested).
|
|
BuildError if `xmin`/`xmax` or `ymin`/`ymax` is specified but does not
|
|
match the axis of `portspec`.
|
|
BuildError if an incorrect bound type or spacing is specified.
|
|
"""
|
|
if self._dead:
|
|
logger.error('Skipping mpath() since device is dead')
|
|
return self
|
|
|
|
bound_types = set()
|
|
if 'bound_type' in kwargs:
|
|
bound_types.add(kwargs['bound_type'])
|
|
bound = kwargs['bound']
|
|
for bt in ('emin', 'emax', 'pmin', 'pmax', 'xmin', 'xmax', 'ymin', 'ymax', 'min_past_furthest'):
|
|
if bt in kwargs:
|
|
bound_types.add(bt)
|
|
bound = kwargs[bt]
|
|
|
|
if not bound_types:
|
|
raise BuildError('No bound type specified for mpath')
|
|
elif len(bound_types) > 1:
|
|
raise BuildError(f'Too many bound types specified for mpath: {bound_types}')
|
|
bound_type = tuple(bound_types)[0]
|
|
|
|
if isinstance(portspec, str):
|
|
portspec = [portspec]
|
|
ports = self.pattern[tuple(portspec)]
|
|
|
|
extensions = ell(ports, ccw, spacing=spacing, bound=bound, bound_type=bound_type, set_rotation=set_rotation)
|
|
|
|
if len(ports) == 1:
|
|
# Not a bus, so having a container just adds noise to the layout
|
|
port_name = tuple(portspec)[0]
|
|
self.path(port_name, ccw, extensions[port_name])
|
|
else:
|
|
for port_name, length in extensions.items():
|
|
self.path(port_name, ccw, length)
|
|
return self
|
|
|
|
def render(
|
|
self,
|
|
append: bool = True,
|
|
) -> Self:
|
|
"""
|
|
Generate the geometry which has been planned out with `path`/`path_to`/etc.
|
|
|
|
Args:
|
|
append: If `True`, the rendered geometry will be directly appended to
|
|
`self.pattern`. Note that it will not be flattened, so if only one
|
|
layer of hierarchy is eliminated.
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
lib = self.library
|
|
tool_port_names = ('A', 'B')
|
|
pat = Pattern()
|
|
|
|
def render_batch(portspec: str, batch: list[RenderStep], append: bool) -> None:
|
|
assert batch[0].tool is not None
|
|
name = lib << batch[0].tool.render(batch, port_names=tool_port_names)
|
|
pat.ports[portspec] = batch[0].start_port.copy()
|
|
if append:
|
|
pat.plug(lib[name], {portspec: tool_port_names[0]}, append=append)
|
|
del lib[name] # NOTE if the rendered pattern has refs, those are now in `pat` but not flattened
|
|
else:
|
|
pat.plug(lib.abstract(name), {portspec: tool_port_names[0]}, append=append)
|
|
|
|
for portspec, steps in self.paths.items():
|
|
batch: list[RenderStep] = []
|
|
for step in steps:
|
|
appendable_op = step.opcode in ('L', 'S', 'U')
|
|
same_tool = batch and step.tool == batch[0].tool
|
|
|
|
# If we can't continue a batch, render it
|
|
if batch and (not appendable_op or not same_tool):
|
|
render_batch(portspec, batch, append)
|
|
batch = []
|
|
|
|
# batch is emptied already if we couldn't continue it
|
|
if appendable_op:
|
|
batch.append(step)
|
|
|
|
# Opcodes which break the batch go below this line
|
|
if not appendable_op and portspec in pat.ports:
|
|
del pat.ports[portspec]
|
|
|
|
#If the last batch didn't end yet
|
|
if batch:
|
|
render_batch(portspec, batch, append)
|
|
|
|
self.paths.clear()
|
|
pat.ports.clear()
|
|
self.pattern.append(pat)
|
|
|
|
return self
|
|
|
|
def translate(self, offset: ArrayLike) -> Self:
|
|
"""
|
|
Translate the pattern and all ports.
|
|
|
|
Args:
|
|
offset: (x, y) distance to translate by
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
self.pattern.translate_elements(offset)
|
|
return self
|
|
|
|
def rotate_around(self, pivot: ArrayLike, angle: float) -> Self:
|
|
"""
|
|
Rotate the pattern and all ports.
|
|
|
|
Args:
|
|
angle: angle (radians, counterclockwise) to rotate by
|
|
pivot: location to rotate around
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
self.pattern.rotate_around(pivot, angle)
|
|
return self
|
|
|
|
def mirror(self, axis: int) -> Self:
|
|
"""
|
|
Mirror the pattern and all ports across the specified axis.
|
|
|
|
Args:
|
|
axis: Axis to mirror across (x=0, y=1)
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
self.pattern.mirror(axis)
|
|
return self
|
|
|
|
def set_dead(self) -> Self:
|
|
"""
|
|
Disallows further changes through `plug()` or `place()`.
|
|
This is meant for debugging:
|
|
```
|
|
dev.plug(a, ...)
|
|
dev.set_dead() # added for debug purposes
|
|
dev.plug(b, ...) # usually raises an error, but now skipped
|
|
dev.plug(c, ...) # also skipped
|
|
dev.pattern.visualize() # shows the device as of the set_dead() call
|
|
```
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
self._dead = True
|
|
return self
|
|
|
|
def __repr__(self) -> str:
|
|
s = f'<Pather {self.pattern} L({len(self.library)}) {pformat(self.tools)}>'
|
|
return s
|
|
|
|
|