bool DemoApp::LoadContent(){
ObjParser reader;
reader.Read(GetFullPath("assets/cube.obj").c_str(), &_scene);
_scene.renderType = Scene::RENDER_TYPE_FRAME;
_scene.camera = &_camera;
_scene.lightList[0] = new Light();
_scene.lightList[0]->type = Light::TYPE_DIRECTION;
_scene.lightList[0]->ambientColor = Color{ 0.0f, 0.0f, 0.0f, 0.3f };
_scene.lightList[0]->diffuseColor = Color{ 1.0f, 0.0f, 0.0f, 1.0f };
_scene.lightList[0]->specularColor = Color{ 1.0f, 1.0f, 1.0f, 1.0f };
_scene.lightList[0]->pos = Vector3D(0.0f, 0.0f, 0.0f);
_scene.lightList[0]->dir = Vector3D(1.0f, -1.0f, 1.0f);
_scene.lightList[1] = new Light();
_scene.lightList[1]->type = Light::TYPE_POINT;
_scene.lightList[1]->ambientColor = Color{ 0.0f, 0.0f, 0.0f, 1.0f };
_scene.lightList[1]->diffuseColor = Color{ 1.0f, 0.0f, 1.0f, 1.0f };
_scene.lightList[1]->specularColor = Color{ 0.0f, 0.0f, 0.0f, 1.0f };
_scene.lightList[1]->pos = Vector3D(2.0f, 0.0f, 0.0f);
_scene.lightList[1]->range = 200.0f;
_scene.lightList[1]->kc = 0.0f;
_scene.lightList[1]->kl = 1.0f;
_scene.lightList[1]->kq = 0.0f;
_scene.lightNum = 2;
/*准备顶点缓冲数据*/
_currMesh = _scene.GetMesh(0);
PreSetVSConstBufferSize(_currMesh, sizeof(MVPConstBuffer));
PreSetPSConstBufferSize(_currMesh, sizeof(PhongConstBuffer));
InitVisual(_currMesh, L"shader/Phong.fx", "assets/t_02.dds");
return true;
}
void loadObj( const std::string& filename )
{
ObjParser parser;
if (! parser.parseFile( filename ) )
{
std::cerr
<< "Failed to load .obj file: " << parser.errorText() << std::endl
<< "FILE: " << parser.filename() << ":"
<< parser.lineNumber() << std::endl
<< "LINE: " << parser.lineText() << std::endl;
}
else
{
std::cout << parser.dump();
}
}
ObjTriangleMesh::ObjTriangleMesh( const Transform *o2c, const Transform *c2o, int subdlevels, const std::string &objfile ): Shape(o2c, c2o) {
std::vector<Point> points;
std::vector<Vector> normals;
std::vector<uv> uvs;
std::vector<int> vIndex;
std::vector<int> nIndex;
std::vector<int> uvIndex;
ObjParser parser = ObjParser(objfile, &points, &normals, &uvs, &vIndex, &nIndex, &uvIndex);
bool success = parser.parseFile();
assert(success);
size_t numTriangles = vIndex.size() / 3;
size_t numVertices = vIndex.size();
LOG_INFO("Found " << numTriangles << " triangles and " << numVertices << " vertices.");
Point *P = new Point[ numVertices ];
Vector *N = new Vector[ numVertices ];
assert(nIndex.size() == vIndex.size());
uv *UV = NULL;
if(uvs.size()){
assert(uvIndex.size() == vIndex.size());
UV = new uv[ numVertices ];
}
int *vertexIndex = new int[3 * numTriangles];
for (size_t i=0; i < 3*numTriangles; i++) {
// obj files starts vert indices at 1 instead of 0.
vertexIndex[i] = vIndex[i] - 1;
nIndex[i]--;
if(UV)
uvIndex[i]--;
assert(vertexIndex[i] < numVertices);
}
for (size_t i = 0; i < numVertices; i++) {
P[i] = points[vertexIndex[i]];
N[i] = normals[nIndex[i]];
if (N[i].x == 0. && N[i].y == 0. && N[i].z == 0.) {
LOG_WARNING("Found empty normal. Setting to 0,1,0");
N[i] = Vector(0,1,0);
}
if (UV){
UV[i] = uvs[uvIndex[i]];
}
vertexIndex[i] = (int)i;
}
if (subdlevels){
m_shape = shared_ptr<Shape>(new LoopSubdivMesh(o2c, c2o, (int)numTriangles, (int)numVertices, vertexIndex, P, UV, subdlevels));
} else {
m_shape = shared_ptr<Shape>(new TriangleMesh(o2c, c2o, (int)numTriangles, (int)numVertices, vertexIndex, P, N, UV));
}
delete[] vertexIndex;
delete[] P;
delete[] N;
if(UV)
delete[] UV;
}
Model *ModelBuilder::buildModel(const char* Filename) {
ObjModel *objModel;
ObjParser objParser;
std::cout << "Filename " << Filename << std::endl;
objModel = objParser.loadModelFromFile(Filename);
// assemble vertices and materials from collected data
unsigned int numberOfFaces = (int)objModel->faces.size();
unsigned int numberOfVertices = numberOfFaces * 3;
std::vector<Vertex> vertices(numberOfVertices);
std::vector<unsigned int> indices(numberOfVertices);
FaceGroup currentFaceGroup;
for(int i = 0; i < numberOfFaces; i++) {
// @todo: check for different mats and create face groups
unsigned int PosIdx0 = objModel->faces[i].pidx[0] - 1;
unsigned int PosIdx1 = objModel->faces[i].pidx[1] - 1;
unsigned int PosIdx2 = objModel->faces[i].pidx[2] - 1;
unsigned int TexIdx0 = objModel->faces[i].tidx[0] - 1;
unsigned int TexIdx1 = objModel->faces[i].tidx[1] - 1;
unsigned int TexIdx2 = objModel->faces[i].tidx[2] - 1;
// Positionen der Vertices setzen
Vector a = vertices[i * 3].position = objModel->positions[PosIdx0];
Vector b = vertices[i * 3 + 1].position = objModel->positions[PosIdx1];
Vector c = vertices[i * 3 + 2].position = objModel->positions[PosIdx2];
// Wenn aktuelles Objekt Textkoordinaten enthaelt, eben diese setzen
vertices[i * 3].texCoordS = objModel->textureCoordinates[TexIdx0].s;
vertices[i * 3 + 1].texCoordS = objModel->textureCoordinates[TexIdx1].s;
vertices[i * 3 + 2].texCoordS = objModel->textureCoordinates[TexIdx2].s;
vertices[i * 3].texCoordT = objModel->textureCoordinates[TexIdx0].t;
vertices[i * 3 + 1].texCoordT = objModel->textureCoordinates[TexIdx1].t;
vertices[i * 3 + 2].texCoordT = objModel->textureCoordinates[TexIdx2].t;
// Normalen berechnen
Vector normal = (b - a).cross(c - a);
normal.normalize();
vertices[i * 3].normal =
vertices[i * 3 + 1].normal =
vertices[i * 3 + 2].normal = normal;
indices[i * 3] = i * 3;
indices[i * 3 + 1] = i * 3 + 1;
indices[i * 3 + 2] = i * 3 + 2;
}
for (unsigned int i = 0; i < numberOfVertices; i++) {
vertices[i].normal.normalize();
}
Model *newModel = new Model();
newModel->setMaterials(objModel->materials, objModel->materialCount);
newModel->setVertices(vertices);
newModel->uploadVerticesToBuffer<Vertex>((unsigned int)vertices.size(), &vertices[0]);
newModel->uploadIndicesToBuffer<unsigned int>((unsigned int)indices.size(), &indices[0]);
return newModel;
}
bool Scene::loadScene(std::string sceneName) {
//Get scene file path
std::string file = PathReader::getPath("", sceneName.c_str(), "xml");
//Load scene file.
tinyxml2::XMLDocument doc;
doc.LoadFile(file.c_str());
//Invalid xml.
if(doc.ErrorID() != XML_NO_ERROR) {
cubeMappingSkybox = nullptr;
light = nullptr;
errorDescription = "Scene file doesn't exists.";
return true;
}
//Variable used to flag the scene as erroneous.
bool errorsInScene = false;
//Get scene type.
//Assume spectral as default.
std::string sceneType = doc.RootElement()->Attribute("type");
sceneType = sceneType == "" ? "Spectral" : sceneType;
//Read camera.
XMLElement* cameraElement = doc.RootElement()->FirstChildElement("camera");
errorsInScene = errorsInScene || setupCamera(cameraElement);
//Light.
const XMLElement* lightElement = doc.RootElement()->FirstChildElement("light");
const XMLElement* lightOrigin = lightElement->FirstChildElement("origin");
if(lightElement) {
std::string lightType = lightElement->Attribute("type");
if(sceneType == "RGB") {
bool rgbLightCreation = setupRGBLight(lightElement, lightOrigin, lightType);
errorsInScene = errorsInScene || rgbLightCreation;
} else {
bool spectralLightCreation = setupSpectralLight(lightElement, lightOrigin, lightType);
errorsInScene = errorsInScene || spectralLightCreation;
}
} else {
errorDescription = errorDescription + "The scene doesn't contain any light.\n";
errorsInScene = true;
}
//Eventually set a cube mapping skybox.
setupSkyboxWithCubeMapping(doc);
//Objects
XMLElement *objectsElement = doc.RootElement()->FirstChildElement("objects");
if(!objectsElement) {
errorDescription = errorDescription + "The scene doesn't contain any object.\n";
errorsInScene = true;
}
//Init geometric objects.
for(XMLElement *objectElement = objectsElement->FirstChildElement("object");
objectElement != NULL;
objectElement = objectElement->NextSiblingElement("object")) {
std::string type = objectElement->Attribute("type");
//Object creation
Model* object;
bool objectCreation = setupObject(&object, objectElement);
errorsInScene = errorsInScene || objectCreation;
//Object material creation.
const XMLElement* material = objectElement->FirstChildElement("material");
if(sceneType == "RGB") {
bool materialRGBCreation = setupRGBObjectMaterial(object, material);
errorsInScene = errorsInScene || materialRGBCreation;
} else {
bool materialBRDFCreation = setupBRDFObjectMaterial(object, material);
errorsInScene = errorsInScene || materialBRDFCreation;
}
//add object.
objects.push_back(object);
}
//Init polygonal mesh.
for(XMLElement *objectElement = objectsElement->FirstChildElement("mesh");
objectElement != NULL;
objectElement = objectElement->NextSiblingElement("mesh")) {
const XMLElement* objFile = objectElement->FirstChildElement("objFile");
bool backFaceCulling = false;
if(attributesExist(objFile, {"backFaceCulling"})) {
backFaceCulling = objFile->FindAttribute("backFaceCulling")->BoolValue();
}
std::string objName = objFile->Attribute("name");
std::string objFilePath = PathReader::getPath("OBJs", objName.c_str(), "obj");
ObjParser objParser;
objParser.parseObj(objFilePath.c_str(), backFaceCulling);
std::vector<Model *> pList = objParser.getPolygonalShapes();
const XMLElement* material = objectElement->FirstChildElement("material");
for(std::vector<Model *>::size_type i = 0; i != pList.size(); i++) {
if(sceneType == "RGB") {
bool materialRGBCreation = setupRGBObjectMaterial(pList[i], material);
errorsInScene = errorsInScene || materialRGBCreation;
} else {
bool materialBRDFCreation = setupBRDFObjectMaterial(pList[i], material);
errorsInScene = errorsInScene || materialBRDFCreation;
}
}
//Setup AABB.
const XMLElement* aabbElement = objectElement->FirstChildElement("aabb");
AxisAlignedBoundingBox aabb;
setupAABB(aabb, aabbElement);
//Create mesh.
Model* mesh = new PolygonalMesh(pList, aabb);
//Add mesh.
objects.push_back(mesh);
}
//SCLT specific configuration.
errorsInScene = errorsInScene || setupSCLTParameter(doc, sceneType);
return errorsInScene;
}
