yodau::backend::point Struct Reference

Point in percentage-based image coordinates. More...

#include <backend/include/geometry.hpp>

Public Member Functions
float	distance_to (const point &other) const
	Compute Euclidean distance to another point.
bool	compare (const point &other) const
	Compare two points with tolerance epsilon.

Public Attributes
float	x {}
	Horizontal coordinate (percentage of width).
float	y {}
	Vertical coordinate (percentage of height).

Static Public Attributes
static constexpr float	epsilon { 0.001f }
	Tolerance used for fuzzy point comparisons.

Detailed Description

Point in percentage-based image coordinates.

Coordinates are expressed in the range [0.0; 100.0], where:

• x = 0 is the left edge, x = 100 is the right edge
• y = 0 is the top edge, y = 100 is the bottom edge

Definition at line 19 of file geometry.hpp.

Member Function Documentation

compare()

bool yodau::backend::point::compare

(

const point &

other

)

const

Compare two points with tolerance epsilon.

The comparison is component-wise:

abs(x - other.x) < epsilon && abs(y - other.y) < epsilon

Parameters

other

Point to compare to.

Returns

true if points are equal within tolerance.

Definition at line 13 of file geometry.cpp.

                                                        {
    return std::fabs(x - other.x) < epsilon && std::fabs(y - other.y) < epsilon;
}

References epsilon, x, and y.

distance_to()

float yodau::backend::point::distance_to

(

const point &

other

)

const

Compute Euclidean distance to another point.

Distance is computed in percentage units.

Parameters

other

Target point.

Returns

Euclidean distance between this and other.

Definition at line 7 of file geometry.cpp.

                                                             {
    const float dx = x - other.x;
    const float dy = y - other.y;
    return std::sqrt(dx * dx + dy * dy);
}

References x, and y.

Member Data Documentation

epsilon

float yodau::backend::point::epsilon { 0.001f }

staticconstexpr

Tolerance used for fuzzy point comparisons.

Definition at line 33 of file geometry.hpp.

{ 0.001f };

Referenced by compare().

x

float yodau::backend::point::x {}

Horizontal coordinate (percentage of width).

Definition at line 23 of file geometry.hpp.

{}; // percentage [0.0; 100.0]

Referenced by compare(), and distance_to().

y

float yodau::backend::point::y {}

Vertical coordinate (percentage of height).

Definition at line 28 of file geometry.hpp.

{}; // percentage [0.0; 100.0]

Referenced by compare(), and distance_to().

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The documentation for this struct was generated from the following files:

• geometry.hpp
• geometry.cpp