Learn Encapsulation by Building a Projectile Trajectory Calculator - Step 14

Python
1

Tell us what’s happening:

even if i have done every thing thing does not pass
import math

GRAVITATIONAL_ACCELERATION = 9.81
PROJECTILE = “∙”
x_axis_tick = “T”
y_axis_tick = “⊣”

class Projectile:
slots = (“__speed”, “__height”, “__angle”)

def __init__(self, speed, height, angle):
    self.__speed = speed
    self.__height = height
    self.__angle = math.radians(angle)

@property
def speed(self):
    return self.__speed

@speed.setter
def speed(self, new_speed):
    self.__speed = new_speed

@property
def height(self):
    return self.__height

@height.setter
def height(self, new_height):
    self.__height = new_height

@property
def angle(self):
    return round(math.degrees(self.__angle))

@angle.setter
def angle(self, new_angle_degrees):
    self.__angle = math.radians(new_angle_degrees)

def __calculate_displacement(self):
    v = self.__speed
    h = self.__height
    theta = self.__angle
    g = GRAVITATIONAL_ACCELERATION

    term_under_sqrt = (v**2 * (math.sin(theta))**2) + (2 * g * h)
    sqrt_part = math.sqrt(term_under_sqrt)
    numerator_part = (v * math.sin(theta)) + sqrt_part
    displacement = (v * math.cos(theta) * numerator_part) / g
    
    return displacement

def __calculate_y_coordinate(self, x):
    y0 = self.__height
    v0 = self.__speed
    theta = self.__angle
    g = GRAVITATIONAL_ACCELERATION

    y = y0 + (x * math.tan(theta)) - ((g * x**2) / (2 * v0**2 * (math.cos(theta))**2))
    return y

def calculate_all_coordinates(self):
    coordinates_list = []
    displacement = self.__calculate_displacement()
    max_x = math.ceil(displacement)
    
    for x in range(max_x):
        y = self.__calculate_y_coordinate(x)
        coordinates_list.append((x, y))
        
    return coordinates_list

def __str__(self):
    speed_val = self.speed
    height_val = self.height
    angle_degrees = self.angle
    displacement_val = self.__calculate_displacement()

    return (
        f"\n"
        f"Projectile details:\n"
        f"speed: {speed_val} m/s\n"
        f"height: {height_val} m\n"
        f"angle: {angle_degrees}°\n"
        f"displacement: {displacement_val:.1f} m\n"
    )

def __repr__(self):
    return f"Projectile({self.speed}, {self.height}, {self.angle})"

ball = Projectile(10, 3, 45)
coordinates = ball.calculate_all_coordinates()
print(ball)

class Graph:
slots = [‘__coordinates’]

def __init__(self, coordinates):
    self.__coordinates = coordinates

def __repr__(self):
    return f"Graph({self.__coordinates!r})"

def create_coordinates_table(self):
    table_string = "\n" 
    
    table_string += f" {'x':>3}{'y':>7}\n" 
    
    for x_coord, y_coord in self.__coordinates:
        table_string += f" {x_coord:>3}{y_coord:>7.2f}\n" 
    
    return table_string

graph = Graph(coordinates)

print(graph.create_coordinates_table())

Your code so far


# User Editable Region

import math

GRAVITATIONAL_ACCELERATION = 9.81
PROJECTILE = "∙"
x_axis_tick = "T"
y_axis_tick = "⊣"

class Projectile:
    __slots__ = ("__speed", "__height", "__angle")

    def __init__(self, speed, height, angle):
        self.__speed = speed
        self.__height = height
        self.__angle = math.radians(angle)

    @property
    def speed(self):
        return self.__speed

    @speed.setter
    def speed(self, new_speed):
        self.__speed = new_speed

    @property
    def height(self):
        return self.__height

    @height.setter
    def height(self, new_height):
        self.__height = new_height

    @property
    def angle(self):
        return round(math.degrees(self.__angle))

    @angle.setter
    def angle(self, new_angle_degrees):
        self.__angle = math.radians(new_angle_degrees)

    def __calculate_displacement(self):
        v = self.__speed
        h = self.__height
        theta = self.__angle
        g = GRAVITATIONAL_ACCELERATION

        term_under_sqrt = (v**2 * (math.sin(theta))**2) + (2 * g * h)
        sqrt_part = math.sqrt(term_under_sqrt)
        numerator_part = (v * math.sin(theta)) + sqrt_part
        displacement = (v * math.cos(theta) * numerator_part) / g
        
        return displacement

    def __calculate_y_coordinate(self, x):
        y0 = self.__height
        v0 = self.__speed
        theta = self.__angle
        g = GRAVITATIONAL_ACCELERATION

        y = y0 + (x * math.tan(theta)) - ((g * x**2) / (2 * v0**2 * (math.cos(theta))**2))
        return y

    def calculate_all_coordinates(self):
        coordinates_list = []
        displacement = self.__calculate_displacement()
        max_x = math.ceil(displacement)
        
        for x in range(max_x):
            y = self.__calculate_y_coordinate(x)
            coordinates_list.append((x, y))
            
        return coordinates_list

    def __str__(self):
        speed_val = self.speed
        height_val = self.height
        angle_degrees = self.angle
        displacement_val = self.__calculate_displacement()

        return (
            f"\n"
            f"Projectile details:\n"
            f"speed: {speed_val} m/s\n"
            f"height: {height_val} m\n"
            f"angle: {angle_degrees}°\n"
            f"displacement: {displacement_val:.1f} m\n"
        )

    def __repr__(self):
        return f"Projectile({self.speed}, {self.height}, {self.angle})"

ball = Projectile(10, 3, 45)
coordinates = ball.calculate_all_coordinates()
print(ball)

class Graph:
    __slots__ = ['__coordinates'] 

    def __init__(self, coordinates):
        self.__coordinates = coordinates

    def __repr__(self):
        return f"Graph({self.__coordinates!r})"

    def create_coordinates_table(self):
        table_string = "\n" 
        
        table_string += f" {'x':>3}{'y':>7}\n" 
        
        for x_coord, y_coord in self.__coordinates:
            table_string += f" {x_coord:>3}{y_coord:>7.2f}\n" 
        
        return table_string

graph = Graph(coordinates)

print(graph.create_coordinates_table())

# User Editable Region

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Challenge Information:

Learn Encapsulation by Building a Projectile Trajectory Calculator - Step 14

2

maybe you need to double check if the extra space at the beginning is needed