Core::Mesh ​

Mesh represents a complete 3D model. More...

#include "Core/Resources/Mesh.h"

Inherits from Core::ManagedResource

Public Classes ​

Public Types ​

Public Functions ​

Public Attributes ​

Friends ​

Additional inherited members ​

Public Attributes inherited from Core::ManagedResource

Detailed Description ​

class Core::Mesh;

class Core::Mesh;

Mesh represents a complete 3D model.

It hold relevant opengl state data and a list of mesh parts that actually make up the model. Each mesh part also holds information about a material and a set of textures. Geometry is immediately passed to OpenGL and not preserved in memory. All geometry data is stored in a set of buffers that are shared among the mesh parts of the mesh.

Can be loaded using assimp with Mesh::load() Or created directly from data using Mesh::create()

Vertex attribute locations are hardcoded and are:

• location 0 = aPos (vec3)
• location 1 = aNormal (vec3)
• location 2 = aTexCoord (vec2)
• location 3 = aTangent (vec3)
• location 4 = aColor (vec3)

Normals, TexCoords, Tangents and Colors can be individually disabled

Public Types Documentation ​

enum DrawType ​

enum PrimitiveType ​

Public Functions Documentation ​

function dispose ​

void dispose() const

void dispose() const

function render ​

void render() const

void render() const

Renders the mesh and all its mesh parts.

For more control over rendering you can iterate through individual meshParts and use renderMeshPart()

function renderMeshPart ​

void renderMeshPart(
    const MeshPart & meshPart
) const

void renderMeshPart(
    const MeshPart & meshPart
) const

Renders an individual mesh part.

Parameters:

• meshPart The mesh part to render.

Note that prior to calling this method the mesh's VAO needs to be bound!

function create ​

static Mesh * create(
    Mesh::PrimitiveType primitiveType,
    const float * verts,
    const unsigned int nVertices,
    const float * colors,
    const unsigned int nColors
)

static Mesh * create(
    Mesh::PrimitiveType primitiveType,
    const float * verts,
    const unsigned int nVertices,
    const float * colors,
    const unsigned int nColors
)

Create mesh from vertices and colors.

Return: Pointer to the new Mesh object (newly allocated, to be managed externally)

Only fills the color vertex buffer.

function create ​

static Mesh * create(
    Mesh::PrimitiveType primitiveType,
    const float * verts,
    const unsigned int nVertices,
    const unsigned int * indices,
    const unsigned int nIndices,
    const float * colors,
    const unsigned int nColors
)

static Mesh * create(
    Mesh::PrimitiveType primitiveType,
    const float * verts,
    const unsigned int nVertices,
    const unsigned int * indices,
    const unsigned int nIndices,
    const float * colors,
    const unsigned int nColors
)

Create mesh from indexed vertices and colors; Only fills the color vertex buffer.

Return: Pointer to the new Mesh object (newly allocated, to be managed externally)

function load ​

static Mesh * load(
    const std::string & path,
    bool normalize =false,
    bool minimalLoad =false
)

static Mesh * load(
    const std::string & path,
    bool normalize =false,
    bool minimalLoad =false
)

Load mesh from a model file using assimp Fills normal, texcoord and tangent vertex buffers.

Parameters:

• path Path to the model file.
• minimalLoad If true, only the bare minimum of the model is loaded. Used to quickly aquire basic information from assimp without actually meaning to use the mesh.

Return: Pointer to the new Mesh object (newly allocated, to be managed externally)

Public Attributes Documentation ​

variable m_boundingBoxMax ​

glm::vec3 m_boundingBoxMax {0.0f};

glm::vec3 m_boundingBoxMax {0.0f};

Mesh bounding box max, derived from bounding boxes of mesh parts.

variable m_boundingBoxMin ​

glm::vec3 m_boundingBoxMin {0.0f};

glm::vec3 m_boundingBoxMin {0.0f};

Mesh bounding box min, derived from bounding boxes of mesh parts.

variable m_color_vbo ​

GLuint m_color_vbo;

GLuint m_color_vbo;

variable m_drawType ​

DrawType m_drawType;

DrawType m_drawType;

variable m_ebo ​

GLuint m_ebo;

GLuint m_ebo;

variable m_meshParts ​

std::vector< MeshPart > m_meshParts;

std::vector< MeshPart > m_meshParts;

List of mesh parts making up this mesh.

variable m_nIndices ​

unsigned int m_nIndices {0};

unsigned int m_nIndices {0};

count of indices af all the mesh parts together

variable m_normal_vbo ​

GLuint m_normal_vbo;

GLuint m_normal_vbo;

variable m_normalized ​

bool m_normalized {false};

bool m_normalized {false};

Whether the mesh geometry has been normalized on load.

variable m_nVertices ​

unsigned int m_nVertices {0};

unsigned int m_nVertices {0};

count of vertices af all the mesh parts together

variable m_path ​

std::string m_path;

std::string m_path;

If applicable, file path to the primary source file.

variable m_primitiveType ​

PrimitiveType m_primitiveType;

PrimitiveType m_primitiveType;

variable m_tangent_vbo ​

GLuint m_tangent_vbo;

GLuint m_tangent_vbo;

variable m_textureCount ​

int m_textureCount {0};

int m_textureCount {0};

Number of loaded textures for this mesh (files or embedded)

variable m_textureFileList ​

std::set< std::string > m_textureFileList;

std::set< std::string > m_textureFileList;

List of texture file paths this mesh requires (not including embedded textures)

variable m_useColors ​

bool m_useColors {false};

bool m_useColors {false};

Whether the vertex colors vbo is used.

variable m_useNormals ​

bool m_useNormals {false};

bool m_useNormals {false};

Whether the normal vbo is used.

variable m_useTangents ​

bool m_useTangents {false};

bool m_useTangents {false};

Whether the tangent vbo is used.

variable m_useTexcoords ​

bool m_useTexcoords {false};

bool m_useTexcoords {false};

Whether the texture coordinates vbo is used.

variable m_uv_vbo ​

GLuint m_uv_vbo;

GLuint m_uv_vbo;

variable m_vao ​

GLuint m_vao;

GLuint m_vao;

variable m_vertex_vbo ​

GLuint m_vertex_vbo;

GLuint m_vertex_vbo;

Friends ​

friend ResourceManager ​

friend class ResourceManager(
    ResourceManager 
);

friend class ResourceManager(
    ResourceManager 
);

Updated on 2025-01-07 at 13:40:44 +0000