scg::GeometryCore Class Reference

A core that contains geometry information to be rendered. More...

#include "GeometryCore.h"

Inheritance diagram for scg::GeometryCore:

Collaboration diagram for scg::GeometryCore:

Public Member Functions
	GeometryCore (GLenum primitiveType, DrawMode drawMode)
virtual	~GeometryCore ()
GeometryCore *	addAttributeData (GLuint location, const GLfloat *data, GLsizeiptr size, GLint dim, GLenum usage)
GeometryCore *	setElementIndexData (const GLuint *data, GLsizeiptr size, GLenum usage)
int	getNTriangles () const
virtual void	render (RenderState *renderState)
Public Member Functions inherited from scg::Core
	Core ()
virtual	~Core ()=0
virtual void	renderPost (RenderState *renderState)

Static Public Member Functions
static GeometryCoreSP	create (GLenum primitiveType, DrawMode drawMode)

Protected Attributes
GLenum	primitiveType_
DrawMode	drawMode_
std::function< void(GLenum, GLsizei)>	drawFunc_
GLuint	vao_
std::vector< GLuint >	vboAttributes_
GLuint	vboIndex_
GLsizei	nElements_

Detailed Description

A core that contains geometry information to be rendered.

Vertices and indices are stored in vertex buffer objects (VBOs). Each geometry core has its own vertex array object (VAO) that is used to store attribute and element index bindings.

Definition at line 53 of file GeometryCore.h.

Constructor & Destructor Documentation

GeometryCore()

scg::GeometryCore::GeometryCore	(	GLenum	primitiveType,
		DrawMode	drawMode
	)

Constructor.

Parameters

primitiveType	GL_POINTS, GL_LINES, GL_LINE_STRIP, GL_LINE_LOOP, GL_TRIANGLES, GL_TRIANGLE_STRIP, or GL_TRIANGLE_FAN
drawMode	DrawMode::ARRAYS or DrawMode::ELEMENTS

~GeometryCore()

virtual scg::GeometryCore::~GeometryCore ( )

virtual

Destructor.

Member Function Documentation

addAttributeData()

GeometryCore* scg::GeometryCore::addAttributeData	(	GLuint	location,
		const GLfloat *	data,
		GLsizeiptr	size,
		GLint	dim,
		GLenum	usage
	)

Add vertex attribute data that is stored in its own vertex buffer object (VBO).

Parameters

location	attribute location the VBO is bound to
data	attribute data
size	buffer size in bytes
dim	dimension of each attribute value, e.g., 3 for xyz vertices
usage	GL_STATIC_DRAW, GL_DYNAMIC_DRAW, or GL_STREAM_DRAW

Returns

this pointer for method chaining

create()

static GeometryCoreSP scg::GeometryCore::create ( GLenum  primitiveType, DrawMode  drawMode  )

static

Create shared pointer.

getNTriangles()

int scg::GeometryCore::getNTriangles

(

)

const

Get approximate number of triangles, called by Shape::getNTriangles().

render()

virtual void scg::GeometryCore::render ( RenderState *  renderState )

virtual

Render geometry.

Implements scg::Core.

setElementIndexData()

GeometryCore* scg::GeometryCore::setElementIndexData	(	const GLuint *	data,
		GLsizeiptr	size,
		GLenum	usage
	)

Set element index data that is stored in its own vertex buffer object (VBO).

Parameters

data	element data
size	buffer size in bytes
usage	GL_STATIC_DRAW, GL_DYNAMIC_DRAW, or GL_STREAM_DRAW

Returns

this pointer for method chaining

Member Data Documentation

drawFunc_

std::function<void(GLenum, GLsizei)> scg::GeometryCore::drawFunc_

protected

Definition at line 111 of file GeometryCore.h.

drawMode_

DrawMode scg::GeometryCore::drawMode_

protected

Definition at line 110 of file GeometryCore.h.

nElements_

GLsizei scg::GeometryCore::nElements_

protected

Definition at line 115 of file GeometryCore.h.

primitiveType_

GLenum scg::GeometryCore::primitiveType_

protected

Definition at line 109 of file GeometryCore.h.

vao_

GLuint scg::GeometryCore::vao_

protected

Definition at line 112 of file GeometryCore.h.

vboAttributes_

std::vector<GLuint> scg::GeometryCore::vboAttributes_

protected

Definition at line 113 of file GeometryCore.h.

vboIndex_

GLuint scg::GeometryCore::vboIndex_

protected

Definition at line 114 of file GeometryCore.h.

---

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

• src/GeometryCore.h