// |----------------------------------------------------------------------------|
// | UpdateBuffers |
// |----------------------------------------------------------------------------|
bool Sentence::UpdateBuffers(char* string, Font* font)
{
DebugLog ("Sentence::UpdateBuffers() called.", DB_GRAPHICS, 2);
int numLetters;
VertexType* vertices;
unsigned long* indices;
D3D11_MAPPED_SUBRESOURCE mappedResource;
VertexType* verticesPtr;
float drawX, drawY;
HRESULT result;
// Get the number of letters in the sentence.
numLetters = (int)strlen(string);
if(numLetters > m_maxLength)
{
return false;
}
// Initialize the index and vertex arrays.
indices = new unsigned long[m_indexCount];
vertices = new VertexType[m_vertexCount];
PopulateBuffers(vertices,indices);
// Calculate the X and Y pixel position on the screen to start drawing to.
drawX = (SCREEN_WIDTH / 2.0f) * -1.0f;
drawY = SCREEN_HEIGHT / 2.0f;
// Use the font class to build the vertex array from the sentence text and sentence draw location.
font->BuildVertexArray(vertices, string, drawX, drawY);
// Lock the vertex buffer so it can be written to.
result = D3DManager::GetRef()->GetDeviceContext()->Map(m_vertexBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
if(FAILED(result))
{
return false;
}
// Get a pointer to the data in the vertex buffer.
verticesPtr = (VertexType*)mappedResource.pData;
// Copy the data into the vertex buffer.
memcpy(verticesPtr, (void*)vertices, (sizeof(VertexType) * m_vertexCount));
// Unlock the vertex buffer.
D3DManager::GetRef()->GetDeviceContext()->Unmap(m_vertexBuffer, 0);
// Release the vertex array as it is no longer needed.
delete [] vertices;
vertices = 0;
return true;
}
bool Mesh::loadFromFile(const char * path){
Assimp::Importer importer;
const aiScene* scene = importer.ReadFile(path, 0);
if (!scene) {
fprintf(stderr, importer.GetErrorString());
getchar();
return false;
}
const aiMesh* mesh = scene->mMeshes[0]; // In this simple example code we always use the 1st mesh (in OBJ files there is often only one anyway)
// Fill vertices positions
vertices.reserve(mesh->mNumVertices);
for (unsigned int i = 0; i < mesh->mNumVertices; i++){
aiVector3D pos = mesh->mVertices[i];
vertices.push_back(glm::vec3(pos.x, pos.y, pos.z));
}
// Fill vertices texture coordinates
uvs.reserve(mesh->mNumVertices);
for (unsigned int i = 0; i < mesh->mNumVertices; i++){
aiVector3D UVW = mesh->mTextureCoords[0][i]; // Assume only 1 set of UV coords; AssImp supports 8 UV sets.
uvs.push_back(glm::vec2(UVW.x, UVW.y));
}
// Fill vertices normals
normals.reserve(mesh->mNumVertices);
for (unsigned int i = 0; i < mesh->mNumVertices; i++){
aiVector3D n = mesh->mNormals[i];
normals.push_back(glm::vec3(n.x, n.y, n.z));
}
PopulateBarycentrics();
// Fill face indices
indices.reserve(3 * mesh->mNumFaces);
for (unsigned int i = 0; i < mesh->mNumFaces; i++){
// Assume the model has only triangles.
indices.push_back(mesh->mFaces[i].mIndices[0]);
indices.push_back(mesh->mFaces[i].mIndices[1]);
indices.push_back(mesh->mFaces[i].mIndices[2]);
}
PopulateBuffers();
}
