nta::PrimitiveBatch Class Reference

represents a collection of primitives to be drawn More...

#include <PrimitiveBatch.h>

Collaboration diagram for nta::PrimitiveBatch:

Public Member Functions
	PrimitiveBatch ()
	constructor and destructor
int	numPrimitives () const
	returns number of primitives to be rendered
void	init ()
	initializes the batch
void	begin ()
	begins collection of primitive
void	end ()
	ends collection of primitive and prepares for rendering
void	addPrimitive (Primitive *primitive)
	adds a primitive to the batch
void	addPrimitive (const std::initializer_list< Vertex2D > &vertices, GLuint textureID=-1, float depth=NTA_DEFAULT_DEPTH)
template<class Iterator >
void	addPrimitive (Iterator first, Iterator last, GLuint textureID=-1, float depth=NTA_DEFAULT_DEPTH)
void	addPrimitive (std::size_t numSides, crvec2 center=glm::vec2(0), float sideLength=1.0, crvec4 color=glm::vec4(1), float orientation=0., float depth=NTA_DEFAULT_DEPTH)
void	render () const
	renders the primitives

Private Member Functions
void	createVertexArrayObject ()
	creates vertex array object
void	createRenderBatches ()
	creates render batches More...
void	sortPrimitives ()
	sorts primitives
GLenum	toPrimitiveType (unsigned int numVertices) const
	return primitive to be drawn

Static Private Member Functions
static bool	compareTexture (Primitive *lhs, Primitive *rhs)
	comparers used for sorting
static bool	comparePrimitive (Primitive *lhs, Primitive *rhs)
static bool	compareDepth (Primitive *lhs, Primitive *rhs)

Private Attributes
std::vector< Primitive * >	m_primitives
std::vector< RenderBatch >	m_renderBatches
	the render batches used to draw the primitives
GLuint	m_vao = 0
	ids for the vertex buffer object and vertex array object used for rendering
GLuint	m_vbo = 0

Detailed Description

represents a collection of primitives to be drawn

Definition at line 46 of file PrimitiveBatch.h.

Member Function Documentation

createRenderBatches()

void nta::PrimitiveBatch::createRenderBatches ( )

private

creates render batches

Todo:

Render all Primitives using trianges since

Definition at line 86 of file PrimitiveBatch.cpp.

Referenced by end().

Member Data Documentation

m_primitives

std::vector<Primitive*> nta::PrimitiveBatch::m_primitives

private

the primitives to be drawn

Todo:

store primitives on the stack

Definition at line 62 of file PrimitiveBatch.h.

Referenced by addPrimitive(), begin(), createRenderBatches(), numPrimitives(), and sortPrimitives().

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

• include/nta/PrimitiveBatch.h
• src/PrimitiveBatch.cpp