Documentation for Geometry and Color Models

This document provides an overview of the Point, Rect, RGB, and Size classes implemented using Pydantic for validation and type enforcement.

Point Class

The Point class represents a point in a 2D space with non-negative coordinates.

Attributes

• x: The x-coordinate (non-negative integer).
• y: The y-coordinate (non-negative integer).

Methods

• is_in_rect(rect: 'Rect') -> bool: Checks if the point is inside the given rectangle.
• offset(dx: int = 0, dy: int = 0) -> 'Point': Returns a new Point offset by specified amounts.

Rect Class

The Rect class represents a rectangle defined by its position and dimensions.

Attributes

• x: The x-coordinate of the rectangle's top-left corner (non-negative integer).
• y: The y-coordinate of the rectangle's top-left corner (non-negative integer).
• w: The width of the rectangle (greater than zero).
• h: The height of the rectangle (greater than zero).

Methods

• __contains__(item: 'Rect'): Checks if another rectangle is contained within this rectangle.
• size() -> 'Size': Returns the size of the rectangle.
• center() -> 'Point': Returns the center point of the rectangle.
• left_top() -> 'Point': Returns the top-left corner point.
• right_top() -> 'Point': Returns the top-right corner point.
• right_bottom() -> 'Point': Returns the bottom-right corner point.
• left_bottom() -> 'Point': Returns the bottom-left corner point.

RGB Class

The RGB class represents a color in the RGB color model.

Attributes

• r: Red component (integer between 0 and 255).
• g: Green component (integer between 0 and 255).
• b: Blue component (integer between 0 and 255).

Methods

• is_similar(other: 'RGB', threshold: int = 4) -> bool: Checks if two RGB colors are similar within a threshold.
• __hex__() -> str: Converts the RGB color to a hexadecimal string.
• from_hex(hex_str: str) -> 'RGB': Creates an RGB object from a hexadecimal string.
• hex() -> str: Returns the hexadecimal representation of the color.
• __int__() -> int: Converts the RGB object to an integer representation.
• from_int(color: int) -> 'RGB': Creates an RGB object from an integer value.
• int() -> int: Returns the integer representation of the color.

Size Class

The Size class represents the dimensions of an object.

Attributes

• width: The width of the object (greater than zero).
• height: The height of the object (greater than zero).

Methods

• area() -> int: Calculates the area of the size.

Usage Example

point = Point(x=5, y=10)
rectangle = Rect(x=0, y=0, w=10, h=20)
color = RGB(r=255, g=0, b=0)
size = Size(width=10, height=20)

# Check if point is in rectangle
is_inside = point.is_in_rect(rectangle)

# Calculate area of size
area = size.area()

This documentation should serve as a comprehensive guide to understanding and using the defined classes.