An axis-aligned rectangle with a position, size and color. More...

#include <rectangle.hpp>

Collaboration diagram for cangine::Rectangle:

[legend]

Static Public Member Functions
static bool	containsPoint (const Rectangle &rect, const Transform &transform, const Vector2 &point)
	Tests whether a point lies inside a (possibly transformed) rectangle.

static bool	overlaps (const Rectangle &r1, const Transform &t1, const Rectangle &r2, const Transform &t2)
	Tests whether two (possibly transformed) rectangles overlap.

Public Attributes
Vector3	pos
	Center position (z is the layer).

float	width
	Width before scaling.

float	height
	Height before scaling.

Color	color
	Fill color.

Detailed Description

An axis-aligned rectangle with a position, size and color.

The geometry is axis-aligned in its own space, but the static helpers accept a Transform so they can perform rotated/scaled hit-tests and collision checks via the Separating Axis Theorem.

Member Function Documentation

◆ containsPoint()

static bool cangine::Rectangle::containsPoint	(	const Rectangle &	rect,
		const Transform &	transform,
		const Vector2 &	point
	)

inlinestatic

Tests whether a point lies inside a (possibly transformed) rectangle.

Parameters

rect	Rectangle whose width/height define the bounds.
transform	Transform supplying position, rotation and scale.
point	Point to test, in world/screen space.

Returns: true if the point is inside the rectangle, false otherwise.

◆ overlaps()

static bool cangine::Rectangle::overlaps	(	const Rectangle &	r1,
		const Transform &	t1,
		const Rectangle &	r2,
		const Transform &	t2
	)

inlinestatic

Tests whether two (possibly transformed) rectangles overlap.

Uses the Separating Axis Theorem over the four edge normals of the two rectangles, so rotation and scale are respected.

Parameters

r1	First rectangle (provides width/height).
t1	Transform for the first rectangle.
r2	Second rectangle (provides width/height).
t2	Transform for the second rectangle.

Returns: true if the rectangles intersect, false otherwise.

Member Data Documentation

◆ color

Color cangine::Rectangle::color

Fill color.

◆ height

float cangine::Rectangle::height

Height before scaling.

◆ pos

Vector3 cangine::Rectangle::pos

Center position (z is the layer).

◆ width

float cangine::Rectangle::width

Width before scaling.

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

cangine/src/cangine/shapes/rectangle.hpp

Static Public Member Functions

Public Attributes