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SubMesh

Add this in your code:

#include <engine/graphics/3d_graphics/mesh_data.h>

Description

Class that store vertices and indices of a sub mesh.

Public methods

SetVertex (UV, Color, Position)

Set the data of a vertex.

Parameters:

  • u: U texture coordinate
  • v: v texture coordinate
  • color: color
  • x: X position
  • y: Y position
  • z: Z position
  • vertexIndex: Index of the vertex to modify
void SetVertex(float u, float v,
               const Color& color,
               float x, float y, float z,
               uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetVertex(1.0f, 0.0f, Color::CreateFromRGBA(255, 128, 128, 255), 1.0f, 2.0f, 1.0f, 0);

SetVertex (Position)

Set the data of a vertex.

Parameters:

  • x: X position
  • y: Y position
  • z: Z position
  • vertexIndex: Index of the vertex to modify
void SetVertex(float x, float y, float z,
               uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetVertex(1.0f, 2.0f, 1.0f, 0);

SetVertex (UV, Position)

Set the data of a vertex.

Parameters:

  • u: U texture coordinate
  • v: v texture coordinate
  • x: X position
  • y: Y position
  • z: Z position
  • vertexIndex: Index of the vertex to modify
void SetVertex(float u, float v,
               float x, float y, float z,
               uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetVertex(1.0f, 0.0f, 1.0f, 2.0f, 1.0f, 0);

SetVertex (UV, Normal, Position)

Set the data of a vertex.

Parameters:

  • u: U texture coordinate
  • v: v texture coordinate
  • nx: X normal
  • ny: Y normal
  • nz: Z normal
  • x: X position
  • y: Y position
  • z: Z position
  • vertexIndex: Index of the vertex to modify
void SetVertex(float u, float v,
               float nx, float ny, float nz,
               float x, float y, float z,
               uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetVertex(1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 2.0f, 1.0f, 0);

SetVertex (Normal, Position)

Set the data of a vertex.

Parameters:

  • nx: X normal
  • ny: Y normal
  • nz: Z normal
  • x: X position
  • y: Y position
  • z: Z position
  • vertexIndex: Index of the vertex to modify
void SetVertex(float nx, float ny, float nz, 
               float x, float y, float z,
               uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetVertex(0.0f, 0.0f, 1.0f, 1.0f, 2.0f, 1.0f, 0);

SetPosition

Set the position of a vertex.

Parameters:

  • x: X position
  • y: Y position
  • z: Z position
  • vertexIndex: Index of the vertex to modify
void SetPosition(float x, float y, float z, uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetPosition(1.0f, 2.0f, 1.0f, 0);

SetNormal

Set the normal of a vertex.

Parameters:

  • nx: X normal
  • ny: Y normal
  • nz: Z normal
  • vertexIndex: Index of the vertex to modify
void SetNormal(float nx, float ny, float nz, uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetNormal(0.0f, 0.0f, 1.0f, 0);

SetUV

Set the UV coordinates of a vertex.

Parameters:

  • u: U texture coordinate
  • v: v texture coordinate
  • vertexIndex: Index of the vertex to modify
void SetUV(float u, float v, uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetUV(1.0f, 0.0f, 0);

SetColor

Set the color of a vertex.

Parameters:

  • color: color
  • vertexIndex: Index of the vertex to modify
void SetColor(const Color& color, uint32_t vertexIndex)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
subMesh0->SetColor(Color::CreateFromRGBA(255, 128, 128, 255), 0);

SetIndex

Set index value.

Parameters:

  • index: The new vertex index
  • value: Index to change
void SetIndex(size_t index, uint32_t value)

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);
// Make a triangle with the 5,3,4 indices
subMesh0->SetIndex(5, 0);
subMesh0->SetIndex(3, 1);
subMesh0->SetIndex(4, 2);

GetIndices

Get indices data pointer. (unsigned short or unsigned int).

void* GetIndices() const

Code sample:

std::shared_ptr<MeshData> meshData; // Filled variable
const std::unique_ptr<SubMesh>& subMesh0 = meshData->GetSubMesh(0);

if (subMesh->usesShortIndices)
{
    unsigned short& index = ((unsigned short*)subMesh->GetIndices())[0];
}
else
{
    unsigned int& index = ((unsigned int*)subMesh->GetIndices())[0];
}