197 lines
9.0 KiB
Python
197 lines
9.0 KiB
Python
# target_simulator/core/models.py
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"""
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Defines the core data models for the application, including 3D dynamic Targets
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with programmable trajectories and Scenarios.
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"""
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from __future__ import annotations
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import math
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from enum import Enum
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from dataclasses import dataclass, field
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from typing import Dict, List, Optional
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# --- Constants ---
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MIN_TARGET_ID = 0
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MAX_TARGET_ID = 15
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KNOTS_TO_FPS = 1.68781
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FPS_TO_KNOTS = 1 / KNOTS_TO_FPS
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NM_TO_FT = 6076.12
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class ManeuverType(Enum):
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FLY_TO_POINT = "Fly to Point"
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FLY_FOR_DURATION = "Fly for Duration"
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@dataclass
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class Waypoint:
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"""Represents a segment of a target's trajectory, defining a maneuver."""
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maneuver_type: ManeuverType = ManeuverType.FLY_FOR_DURATION
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# Parameters used by FLY_FOR_DURATION and as final state for FLY_TO_POINT
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target_velocity_fps: Optional[float] = None
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target_heading_deg: Optional[float] = None
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# Parameters used by both
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duration_s: Optional[float] = 10.0
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target_altitude_ft: Optional[float] = 10000.0
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# Parameters used by FLY_TO_POINT
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target_range_nm: Optional[float] = None
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target_azimuth_deg: Optional[float] = None
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# Internal state for interpolation, set when waypoint becomes active
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_start_velocity_fps: float = field(init=False, repr=False, default=0.0)
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_start_heading_deg: float = field(init=False, repr=False, default=0.0)
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_start_altitude_ft: float = field(init=False, repr=False, default=0.0)
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_calculated_duration_s: Optional[float] = field(init=False, default=None, repr=False)
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def to_dict(self) -> Dict:
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data = {"maneuver_type": self.maneuver_type.value}
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# Use dataclasses.fields to iterate reliably
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for f in field(self):
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if not f.name.startswith('_') and f.name != "maneuver_type":
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val = getattr(self, f.name)
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if val is not None:
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data[f.name] = val
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return data
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@dataclass
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class Target:
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"""Represents a dynamic 3D target with a programmable trajectory."""
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target_id: int
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trajectory: List[Waypoint] = field(default_factory=list)
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active: bool = True
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traceable: bool = True
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# --- Current simulation state (dynamic) ---
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current_range_nm: float = field(init=False, default=0.0)
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current_azimuth_deg: float = field(init=False, default=0.0)
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current_altitude_ft: float = field(init=False, default=0.0)
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current_velocity_fps: float = field(init=False, default=0.0)
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current_heading_deg: float = field(init=False, default=0.0)
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current_pitch_deg: float = field(init=False, default=0.0)
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_pos_x_ft: float = field(init=False, repr=False, default=0.0)
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_pos_y_ft: float = field(init=False, repr=False, default=0.0)
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_pos_z_ft: float = field(init=False, repr=False, default=0.0)
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_sim_time_s: float = field(init=False, default=0.0)
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_current_waypoint_index: int = field(init=False, default=-1)
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_time_in_waypoint_s: float = field(init=False, default=0.0)
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def __post_init__(self):
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if not (MIN_TARGET_ID <= self.target_id <= MAX_TARGET_ID):
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raise ValueError(f"Target ID must be between {MIN_TARGET_ID} and {MAX_TARGET_ID}.")
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self.reset_simulation()
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def reset_simulation(self):
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"""Resets the target to its initial state defined by the first waypoint."""
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self._sim_time_s = 0.0
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self._current_waypoint_index = -1
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self._time_in_waypoint_s = 0.0
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if not self.trajectory or self.trajectory[0].maneuver_type != ManeuverType.FLY_TO_POINT:
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self._pos_x_ft = self._pos_y_ft = self._pos_z_ft = 0.0
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self.current_velocity_fps = 0.0; self.current_heading_deg = 0.0; self.current_pitch_deg = 0.0
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else:
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first_wp = self.trajectory[0]
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self.current_range_nm = first_wp.target_range_nm or 0.0
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self.current_azimuth_deg = first_wp.target_azimuth_deg or 0.0
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self.current_altitude_ft = first_wp.target_altitude_ft or 0.0
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self.current_velocity_fps = first_wp.target_velocity_fps or 0.0
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self.current_heading_deg = first_wp.target_heading_deg or 0.0
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self.current_pitch_deg = 0.0 # Pitch is calculated, not set directly at start
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range_ft = self.current_range_nm * NM_TO_FT
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az_rad = math.radians(self.current_azimuth_deg)
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self._pos_x_ft = range_ft * math.sin(az_rad)
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self._pos_y_ft = range_ft * math.cos(az_rad)
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self._pos_z_ft = self.current_altitude_ft
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self._activate_next_waypoint()
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self._update_current_polar_coords()
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def _activate_next_waypoint(self):
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"""Pre-calculates and activates the next waypoint in the trajectory."""
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self._current_waypoint_index += 1
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self._time_in_waypoint_s = 0.0
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if self._current_waypoint_index >= len(self.trajectory):
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self._current_waypoint_index = -1; return
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wp = self.trajectory[self._current_waypoint_index]
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wp._start_velocity_fps = self.current_velocity_fps
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wp._start_heading_deg = self.current_heading_deg
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wp._start_altitude_ft = self.current_altitude_ft
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if wp.maneuver_type == ManeuverType.FLY_TO_POINT:
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target_range_ft = (wp.target_range_nm or 0.0) * NM_TO_FT
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target_az_rad = math.radians(wp.target_azimuth_deg or 0.0)
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target_x = target_range_ft * math.sin(target_az_rad)
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target_y = target_range_ft * math.cos(target_az_rad)
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target_z = wp.target_altitude_ft or self._pos_z_ft
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dx, dy, dz = target_x - self._pos_x_ft, target_y - self._pos_y_ft, target_z - self._pos_z_ft
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dist_3d = math.sqrt(dx**2 + dy**2 + dz**2)
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dist_2d = math.sqrt(dx**2 + dy**2)
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# These become the constant kinematics for this segment
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self.current_heading_deg = math.degrees(math.atan2(dx, dy)) % 360
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self.current_pitch_deg = math.degrees(math.atan2(dz, dist_2d)) if dist_2d > 1 else 90.0 if dz > 0 else -90.0
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if wp.duration_s and wp.duration_s > 0:
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self.current_velocity_fps = dist_3d / wp.duration_s
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wp._calculated_duration_s = wp.duration_s
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else: # Invalid waypoint, make it static
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self.current_velocity_fps = 0
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wp._calculated_duration_s = 999999
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def update_state(self, delta_time_s: float):
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if not self.active or self._current_waypoint_index == -1: return
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self._sim_time_s += delta_time_s
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self._time_in_waypoint_s += delta_time_s
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wp = self.trajectory[self._current_waypoint_index]
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duration = wp._calculated_duration_s if wp._calculated_duration_s is not None else wp.duration_s or 0.0
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if self._time_in_waypoint_s >= duration:
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# Finalize state to match waypoint target
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if wp.maneuver_type == ManeuverType.FLY_FOR_DURATION:
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self.current_velocity_fps = wp.target_velocity_fps or self.current_velocity_fps
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self.current_heading_deg = wp.target_heading_deg or self.current_heading_deg
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self.current_altitude_ft = wp.target_altitude_ft or self.current_altitude_ft
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self._activate_next_waypoint()
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if self._current_waypoint_index == -1: return
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wp = self.trajectory[self._current_waypoint_index] # Get new active waypoint
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duration = wp._calculated_duration_s if wp._calculated_duration_s is not None else wp.duration_s or 0.0
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progress = self._time_in_waypoint_s / duration if duration > 0 else 1.0
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if wp.maneuver_type == ManeuverType.FLY_FOR_DURATION:
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# Interpolate kinematics during the maneuver
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self.current_velocity_fps = wp._start_velocity_fps + ((wp.target_velocity_fps or wp._start_velocity_fps) - wp._start_velocity_fps) * progress
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self.current_altitude_ft = wp._start_altitude_ft + ((wp.target_altitude_ft or wp._start_altitude_ft) - wp._start_altitude_ft) * progress
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delta_heading = ((wp.target_heading_deg or wp._start_heading_deg) - wp._start_heading_deg + 180) % 360 - 180
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self.current_heading_deg = (wp._start_heading_deg + delta_heading * progress) % 360
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# Update position using current 3D vector
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heading_rad = math.radians(self.current_heading_deg)
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pitch_rad = math.radians(self.current_pitch_deg)
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dist_moved = self.current_velocity_fps * delta_time_s
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dist_2d = dist_moved * math.cos(pitch_rad)
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self._pos_x_ft += dist_2d * math.sin(heading_rad)
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self._pos_y_ft += dist_2d * math.cos(heading_rad)
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self._pos_z_ft += dist_moved * math.sin(pitch_rad)
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self._update_current_polar_coords()
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def _update_current_polar_coords(self):
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"""Recalculates current polar coordinates from Cartesian ones."""
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self.current_range_nm = math.sqrt(self._pos_x_ft**2 + self._pos_y_ft**2) / NM_TO_FT
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self.current_azimuth_deg = math.degrees(math.atan2(self._pos_x_ft, self._pos_y_ft))
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self.current_altitude_ft = self._pos_z_ft
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# ... il resto dei metodi come to_dict e la classe Scenario rimangono uguali a prima ... |