void glTF2Exporter::GetMatTex(const aiMaterial* mat, Ref<Texture>& texture, aiTextureType tt, unsigned int slot = 0)
{
if (mat->GetTextureCount(tt) > 0) {
aiString tex;
if (mat->Get(AI_MATKEY_TEXTURE(tt, slot), tex) == AI_SUCCESS) {
std::string path = tex.C_Str();
if (path.size() > 0) {
std::map<std::string, unsigned int>::iterator it = mTexturesByPath.find(path);
if (it != mTexturesByPath.end()) {
texture = mAsset->textures.Get(it->second);
}
if (!texture) {
std::string texId = mAsset->FindUniqueID("", "texture");
texture = mAsset->textures.Create(texId);
mTexturesByPath[path] = texture.GetIndex();
std::string imgId = mAsset->FindUniqueID("", "image");
texture->source = mAsset->images.Create(imgId);
if (path[0] == '*') { // embedded
aiTexture* tex = mScene->mTextures[atoi(&path[1])];
uint8_t* data = reinterpret_cast<uint8_t*>(tex->pcData);
texture->source->SetData(data, tex->mWidth, *mAsset);
if (tex->achFormatHint[0]) {
std::string mimeType = "image/";
mimeType += (memcmp(tex->achFormatHint, "jpg", 3) == 0) ? "jpeg" : tex->achFormatHint;
texture->source->mimeType = mimeType;
}
}
else {
texture->source->uri = path;
}
GetTexSampler(mat, texture, tt, slot);
}
}
}
}
}
/*
* Export the root node of the node hierarchy.
* Calls ExportNode for all children.
*/
unsigned int glTF2Exporter::ExportNodeHierarchy(const aiNode* n)
{
Ref<Node> node = mAsset->nodes.Create(mAsset->FindUniqueID(n->mName.C_Str(), "node"));
if (!n->mTransformation.IsIdentity()) {
node->matrix.isPresent = true;
CopyValue(n->mTransformation, node->matrix.value);
}
for (unsigned int i = 0; i < n->mNumMeshes; ++i) {
node->meshes.push_back(mAsset->meshes.Get(n->mMeshes[i]));
}
for (unsigned int i = 0; i < n->mNumChildren; ++i) {
unsigned int idx = ExportNode(n->mChildren[i], node);
node->children.push_back(mAsset->nodes.Get(idx));
}
return node.GetIndex();
}
