Shape Class Reference
[Basic]

Base class for a 3D object in the scene. More...

#include <Shape.hpp>

Inheritance diagram for Shape:

List of all members.

Public Member Functions
	Shape (const Tag &tag, ShapeTraits traits)
virtual void	associate ()
virtual void	draw () const
void	draw (int first, int number) const
virtual void	finalize ()
virtual list< VertexAttribute >	getAttributes () const
virtual GLuint	getCount () const
virtual GLuint	getLimit () const
virtual string	getName () const
virtual Program *	getProgram () const
virtual void	setAttributes (list< VertexAttribute > &attributes)
virtual void	setProgram (Program *program)
virtual string	toString () const
Protected Member Functions
void	checkForDefaultUniforms ()
virtual GLuint	getOffset (const string &name) const
void	setBufferData (const string &name, GLfloat data[][3])
virtual void	setCount (GLuint count)
virtual void	setLimit (GLuint limit)
virtual void	updateBuffer ()=0
Static Protected Member Functions
static bool	isBufferStored (const string &className)
Private Attributes
bool	defaults
list< VertexAttribute >	attributes
GLenum	mode
GLenum	usage
GLuint	block
GLuint	buffer
GLuint	count
GLuint	limit
map< string, GLuint >	offsets
Program *	program
string	name
Static Private Attributes
static map< string, GLuint >	buffers

---

Detailed Description

Base class for a 3D object in the scene.

Uses a vertex buffer for drawing. If usage is GL_STATIC_DRAW, a buffer will only be generated once for each concrete shape. Subsequent instances of that shape will be given the same buffer. That way duplicate buffers are avoided.

count	Number of elements in the shape.
buffer	Handle that OpenGL identifies the vertex buffer with.
program	Pointer to the Program the shape will be rendered with.

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Constructor & Destructor Documentation

Shape	(	const Tag &	tag,
		ShapeTraits	traits
	)

Creates a shape from an XML tag.

Parameters:

	tag	XML tag with attributes for SimpleDrawable.
	traits	Structure of shape parameters.

---

Member Function Documentation

void associate

(

)

[virtual]

Finds a program to bind the shape's vertex attributes to.

Exceptions:

NodeException

if a program cannot be found.

Reimplemented from SimpleTransformable.

Reimplemented in Boolean, and BooleanAnd.

void draw	(	int	first,
		int	number
	)			const

Renders part of the shape.

void draw

(

)

const [virtual]

Renders the entire shape.

Implements SimpleDrawable.

Reimplemented in Boolean, BooleanAnd, and BooleanXor.

void finalize

(

)

[virtual]

Loads the vertex data into the vertex buffer so it's ready to render.

Reimplemented from Node.

Reimplemented in Boolean.

list< VertexAttribute > getAttributes

(

)

const [inline, virtual]

Returns:

Attributes in use for this shape.

GLuint getCount

(

)

const [inline, virtual]

Returns:

Number of vertices in the shape.

GLuint getLimit

(

)

const [inline, virtual]

Returns:

Number of vertices that will be drawn.

string getName

(

)

const [inline, virtual]

Returns:

User-assigned name of the shape.

GLuint getOffset

(

const string &

name

)

const [protected, virtual]

Returns:

Number of bytes into the vertex buffer for a vertex attribute.

Program * getProgram

(

)

const [inline, virtual]

Returns:

Program the shape sends vertex attributes to.

bool isBufferStored

(

const string &

className

)

[static, protected]

Checks if a buffer already exists for a concrete shape.

void setAttributes

(

list< VertexAttribute > &

a

)

[inline, virtual]

Set attributes in use for this shape.

void setBufferData	(	const string &	name,
		GLfloat	data[][3]
	)			[protected]

Sets data in the buffer according to its vertex attribute name.

Parameters:

	name	Name of the vertex attribute
	data	Array of values of length count

void setCount

(

GLuint

c

)

[inline, protected, virtual]

Sets the number of vertices in the shape.

void setLimit

(

GLuint

l

)

[inline, protected, virtual]

Sets the number of vertices that will be drawn.

void setProgram

(

Program *

p

)

[inline, virtual]

Sets the program to send vertex attributes to.

string toString

(

)

const [virtual]

Returns:

String comprised of the object's attributes.

Reimplemented from SimpleDrawable.

Reimplemented in Boolean, and BooleanXor.

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

• Shape.hpp
• Shape.cpp