draw::Geometry Class Reference

Set of indexed 2D-primitives. More...

#include <draw.h>

Classes
struct	Vertex
	2D-vertex. More...

Public Types
enum	Primitive { Primitive::Point = 1, Primitive::Line, Primitive::Triangle }
	A type of primitive. More...
using	Vertices = Span< Vertex >
	Sequence of vertices. More...
using	Index = uint16_t
	An index of a vertex. More...
using	Indices = Span< Index >
	Sequence of indices. More...

Public Member Functions
virtual	~Geometry ()=default
virtual uint32_t	vertexCount () const =0
	return vertex count More...
virtual uint32_t	indexCount () const =0
	return index count More...
virtual Primitive	primitive () const =0
	return primitive type More...

Static Public Attributes
static const uint32_t	kMaxVertexCount = 65535
	maximum available vertex count More...

Detailed Description

Set of indexed 2D-primitives.

You should define your vertices in [0.0, 1.0] space as if it's fit to one pixel. Then you can set appropriate pixel size via Shape::size(const Size& size). To create an object of this type use Renderer::makeGeometry function.

Member Typedef Documentation

using draw::Geometry::Index = uint16_t

An index of a vertex.

using draw::Geometry::Indices = Span<Index>

Sequence of indices.

using draw::Geometry::Vertices = Span<Vertex>

Sequence of vertices.

Member Enumeration Documentation

enum draw::Geometry::Primitive

strong

A type of primitive.

Enumerator
Point	consumes 1 index per primitive
Line	consumes 2 index per primitive
Triangle	consumes 3 index per primitive

Constructor & Destructor Documentation

virtual draw::Geometry::~Geometry ( )

virtualdefault

Member Function Documentation

virtual uint32_t draw::Geometry::indexCount ( ) const

pure virtual

return index count

virtual Primitive draw::Geometry::primitive ( ) const

pure virtual

return primitive type

virtual uint32_t draw::Geometry::vertexCount ( ) const

pure virtual

return vertex count

Member Data Documentation

const uint32_t draw::Geometry::kMaxVertexCount = 65535

static

maximum available vertex count

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

• src/draw.h