TriangleGeometry Class Reference

#include <objects_geometry.h>

Inheritance diagram for TriangleGeometry:

Public Member Functions
	TriangleGeometry (float _side_length)
	Construct an equilateral TriangleGeometry.
void	create_box2d_shape (b2BodyId body_id, b2ShapeDef &shape_def) override
	Create a Box2D shape based on this geometry.
std::vector< std::vector< bool > >	export_geometry_grid (size_t num_bins_x, size_t num_bins_y, float bin_width, float bin_height, float obj_x, float obj_y) const override
	Exports a boolean 2D grid showing which bins are covered by the triangle.
void	render (SDL_Renderer *renderer, b2WorldId world_id, float x, float y, float theta, uint8_t r, uint8_t g, uint8_t b, uint8_t alpha=255) const override
	Renders the triangle on the given SDL renderer.
float	get_side_length () const
	Returns the side length of the equilateral triangle.
BoundingDisk	compute_bounding_disk () const override
	Computes the bounding disk that completely encloses the geometry.
BoundingBox	compute_bounding_box () const override
	Computes the axis-aligned bounding box that completely encloses the geometry.
arena_polygons_t	generate_contours (std::size_t points_per_contour=0, b2Vec2 position={0.0f, 0.0f}) const override
	Return one or more polygonal contours that approximate / represent this geometry.
Public Member Functions inherited from ObjectGeometry
	ObjectGeometry ()
	Construct an ObjectGeometry.
virtual	~ObjectGeometry ()
	Destructor.
b2ShapeId	get_shape_id () const
	Return Box2D shape_id.
virtual float	get_distance_to (b2Vec2 orig, b2Vec2 point) const
	Compute the distance from a given point to the geometry.

Additional Inherited Members
Protected Attributes inherited from ObjectGeometry
bool	shape_created = false
b2ShapeId	shape_id
	Box2D shape identifier.

Constructor & Destructor Documentation

TriangleGeometry()

TriangleGeometry::TriangleGeometry ( float _side_length )

inlineexplicit

Construct an equilateral TriangleGeometry.

The triangle is centered at (0,0) in local coordinates (its centroid).

Parameters

_side_length

The side length of the equilateral triangle.

Member Function Documentation

compute_bounding_box()

BoundingBox TriangleGeometry::compute_bounding_box ( ) const

overridevirtual

Computes the axis-aligned bounding box that completely encloses the geometry.

Implements ObjectGeometry.

compute_bounding_disk()

BoundingDisk TriangleGeometry::compute_bounding_disk ( ) const

overridevirtual

Computes the bounding disk that completely encloses the geometry.

Implements ObjectGeometry.

create_box2d_shape()

void TriangleGeometry::create_box2d_shape ( b2BodyId body_id, b2ShapeDef & shape_def )

overridevirtual

Create a Box2D shape based on this geometry.

Implements ObjectGeometry.

export_geometry_grid()

std::vector< std::vector< bool > > TriangleGeometry::export_geometry_grid ( size_t num_bins_x, size_t num_bins_y, float bin_width, float bin_height, float obj_x, float obj_y ) const

overridevirtual

Exports a boolean 2D grid showing which bins are covered by the triangle.

Implements ObjectGeometry.

generate_contours()

arena_polygons_t TriangleGeometry::generate_contours ( std::size_t points_per_contour = 0, b2Vec2 position = {0.0f, 0.0f} ) const

overridevirtual

Return one or more polygonal contours that approximate / represent this geometry.

Implements ObjectGeometry.

get_side_length()

float TriangleGeometry::get_side_length ( ) const

inline

Returns the side length of the equilateral triangle.

render()

void TriangleGeometry::render ( SDL_Renderer * renderer, b2WorldId world_id, float x, float y, float theta, uint8_t r, uint8_t g, uint8_t b, uint8_t alpha = 255 ) const

overridevirtual

Renders the triangle on the given SDL renderer.

Implements ObjectGeometry.

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

• src/pogosim/objects_geometry.h
• src/pogosim/objects_geometry.cpp