vertex data stored in system memory. More...

#include <model_data.h>

Public Types
enum class	primitive_mode { triangles }

using	attribute_collection_type = std::unordered_map<std::string, attribute_data>

using	index_value_type = unsigned short

Public Member Functions
primitive_mode	get_primitive_mode () const
	get the primitive mode

const std::vector< index_value_type > &	indexes () const
	get list of indexes

const attribute_collection_type &	attributes () const
	get collection of all attribute data

const attribute_data &	get_attribute_data (const std::string &aAttributeName) const
	get attribute data by name, e.g: "a_Position"

attribute_data &	get_attribute_data (const std::string &aAttributeName)
	get attribute data by name, e.g: "a_Position"

void	clear ()
	clears all state from this model_data instance

void	transform (const std::string &aPositionAttributeName, const graphics_vector3_type &aPos, const graphics_quaternion_type &aRot={}, const graphics_vector3_type &aSca={1})
	applies a transformation to a 3 component attribute

void	transform (const std::string &aPositionAttributeName, graphics_matrix4x4_type &aTransform)

void	transform (const std::string &aUVAttributeName, const graphics_vector2_type &aPos, const float aRotation=0, const graphics_vector2_type &aSca={1})
	applies a transformation to a 2 component attribute

void	sort_by_nearest_triangle (const graphics_vector3_type &aObserverWorldPosition, graphics_matrix4x4_type aEntityInstanceWorldMatrix, const std::string &aPositionAttributeName="a_Position")

void	sort_by_furthest_triangle (const graphics_vector3_type &aObserverWorldPosition, graphics_matrix4x4_type aEntityInstanceWorldMatrix, const std::string &aPositionAttributeName="a_Position")

void	push_back (const model_data &other)
	append a different model_data to this model_data

void	overwrite (const size_t index, const model_data &other)
	overwrite a section of vertex data using another vertex data instance

void	overwrite (const std::string &aAttributeName, const size_t vertexOffset, const model_data &other)
	overwrite a section of a single attribute in the vertex data

size_t	vertex_count () const
	get number of verticies in the data

model_data	operator+ (const model_data &aData)
	create a new instance that is a concatenation of two separate datas

model_data &	operator+= (const model_data &other)

model_data &	operator= (model_data &&other)=default
	support move semantics

	model_data (model_data &&)=default
	support move semantics

	model_data (const model_data &)=default
	support copy semantics

model_data &	operator= (const model_data &other)=default
	support copy semantics

	model_data ()=default
	default inited model_data is very useful for procedurally generated data

	model_data (attribute_collection_type &&aAttributeData)

Static Public Member Functions
static model_data	make_quad ()
	creates model data for a unit sized quad with position and uv data

Detailed Description

vertex data stored in system memory.

vertex data is comprised of a collection of attributes, which in turn are a collection of components

Member Function Documentation

◆ operator+=()

model_data & gdk::model_data::operator+= ( const model_data & other )

append a copy of different model_data to this model_data \warn must be same format

◆ overwrite() [1/2]

void gdk::model_data::overwrite	(	const size_t	index,
		const model_data &	other )

overwrite a section of vertex data using another vertex data instance

formats must match exactly, the incoming data cannot write past the end of this

◆ overwrite() [2/2]

void gdk::model_data::overwrite	(	const std::string &	aAttributeName,
		const size_t	vertexOffset,
		const model_data &	other )

overwrite a section of a single attribute in the vertex data

the vertex data must contain an attribute with the given name and that attribute must have the same # of components

◆ sort_by_furthest_triangle()

void gdk::model_data::sort_by_furthest_triangle	(	const graphics_vector3_type &	aObserverWorldPosition,
		graphics_matrix4x4_type	aEntityInstanceWorldMatrix,
		const std::string &	aPositionAttributeName = "a_Position" )

sorts verticies from furthest to nearest based on the distance between the centroid of the triangles they form and a given position in world space

◆ sort_by_nearest_triangle()

void gdk::model_data::sort_by_nearest_triangle	(	const graphics_vector3_type &	aObserverWorldPosition,
		graphics_matrix4x4_type	aEntityInstanceWorldMatrix,
		const std::string &	aPositionAttributeName = "a_Position" )

sorts verticies from nearest to furthest based on the distance between the centroid of the triangles they form and a given position in world space

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

/home/deck/Workspace/gdk-test_game/thirdparty/gdk-graphics/include/gdk/model_data.h

Public Types

Public Member Functions