Scene::Scene(const std::string &fileName,uint width, uint height ,const int aType ) {
accelType = aType;
extMeshCache = new ExtMeshCache();
texMapCache = new TextureMapCache();
SDL_LOG("Reading scene: " << fileName);
scnProp = new Properties(fileName);
//--------------------------------------------------------------------------
// Read camera position and target
//--------------------------------------------------------------------------
std::vector<float> vf = GetParameters(*scnProp, "scene.camera.lookat", 6, "10.0 0.0 0.0 0.0 0.0 0.0");
Point o(vf.at(0), vf.at(1), vf.at(2));
Point t(vf.at(3), vf.at(4), vf.at(5));
SDL_LOG("Camera postion: " << o);
SDL_LOG("Camera target: " << t);
vf = GetParameters(*scnProp, "scene.camera.up", 3, "0.0 0.0 0.1");
const Vector up(vf.at(0), vf.at(1), vf.at(2));
camera = new PerspectiveCamera(o, t, up);
camera->lensRadius = scnProp->GetFloat("scene.camera.lensradius", 0.f);
camera->focalDistance = scnProp->GetFloat("scene.camera.focaldistance", 10.f);
camera->fieldOfView = scnProp->GetFloat("scene.camera.fieldofview", 45.f);
// Check if camera motion blur is enabled
if (scnProp->GetInt("scene.camera.motionblur.enable", 0)) {
camera->motionBlur = true;
vf = GetParameters(*scnProp, "scene.camera.motionblur.lookat", 6, "10.0 1.0 0.0 0.0 1.0 0.0");
camera->mbOrig = Point(vf.at(0), vf.at(1), vf.at(2));
camera->mbTarget = Point(vf.at(3), vf.at(4), vf.at(5));
vf = GetParameters(*scnProp, "scene.camera.motionblur.up", 3, "0.0 0.0 0.1");
camera->mbUp = Vector(vf.at(0), vf.at(1), vf.at(2));
}
//--------------------------------------------------------------------------
// Read all materials
//--------------------------------------------------------------------------
std::vector<std::string> matKeys = scnProp->GetAllKeys("scene.materials.");
if (matKeys.size() == 0)
throw std::runtime_error("No material definition found");
for (std::vector<std::string>::const_iterator matKey = matKeys.begin(); matKey != matKeys.end(); ++matKey) {
const std::string &key = *matKey;
const std::string matType = Properties::ExtractField(key, 2);
if (matType == "")
throw std::runtime_error("Syntax error in " + key);
const std::string matName = Properties::ExtractField(key, 3);
if (matName == "")
throw std::runtime_error("Syntax error in " + key);
SDL_LOG("Material definition: " << matName << " [" << matType << "]");
Material *mat = CreateMaterial(key, *scnProp);
materialIndices[matName] = materials.size();
materials.push_back(mat);
}
//--------------------------------------------------------------------------
// Read all objects .ply file
//--------------------------------------------------------------------------
std::vector<std::string> objKeys = scnProp->GetAllKeys("scene.objects.");
if (objKeys.size() == 0)
throw std::runtime_error("Unable to find object definitions");
double lastPrint = WallClockTime();
unsigned int objCount = 0;
for (std::vector<std::string>::const_iterator objKey = objKeys.begin(); objKey != objKeys.end(); ++objKey) {
const std::string &key = *objKey;
// Check if it is the root of the definition of an object otherwise skip
const size_t dot1 = key.find(".", std::string("scene.objects.").length());
if (dot1 == std::string::npos)
continue;
const size_t dot2 = key.find(".", dot1 + 1);
if (dot2 != std::string::npos)
continue;
const std::string objName = Properties::ExtractField(key, 3);
if (objName == "")
throw std::runtime_error("Syntax error in " + key);
// Build the object
const std::vector<std::string> args = scnProp->GetStringVector(key, "");
const std::string plyFileName = args.at(0);
const double now = WallClockTime();
if (now - lastPrint > 2.0) {
SDL_LOG("PLY object count: " << objCount);
lastPrint = now;
}
++objCount;
//SDL_LOG("PLY object [" << objName << "] file name: " << plyFileName);
// Check if I have to calculate normal or not
const bool usePlyNormals = (scnProp->GetInt(key + ".useplynormals", 0) != 0);
// Check if I have to use an instance mesh or not
ExtMesh *meshObject;
if (scnProp->IsDefined(key + ".transformation")) {
const std::vector<float> vf = GetParameters(*scnProp, key + ".transformation", 16, "1.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 1.0");
const Matrix4x4 mat(
vf.at(0), vf.at(4), vf.at(8), vf.at(12),
vf.at(1), vf.at(5), vf.at(9), vf.at(13),
vf.at(2), vf.at(6), vf.at(10), vf.at(14),
vf.at(3), vf.at(7), vf.at(11), vf.at(15));
const Transform trans(mat);
meshObject = extMeshCache->GetExtMesh(plyFileName, usePlyNormals, trans);
} else
meshObject = extMeshCache->GetExtMesh(plyFileName, usePlyNormals);
objectIndices[objName] = objects.size();
objects.push_back(meshObject);
// Get the material
const std::string matName = Properties::ExtractField(key, 2);
if (matName == "")
throw std::runtime_error("Syntax error in material name: " + matName);
if (materialIndices.count(matName) < 1)
throw std::runtime_error("Unknown material: " + matName);
Material *mat = materials[materialIndices[matName]];
// Check if it is a light sources
if (mat->IsLightSource()) {
SDL_LOG("The " << objName << " object is a light sources with " << meshObject->GetTotalTriangleCount() << " triangles");
AreaLightMaterial *light = (AreaLightMaterial *)mat;
objectMaterials.push_back(mat);
for (unsigned int i = 0; i < meshObject->GetTotalTriangleCount(); ++i) {
TriangleLight *tl = new TriangleLight(light, static_cast<unsigned int>(objects.size()) - 1, i, objects);
lights.push_back(tl);
}
} else {
SurfaceMaterial *surfMat = (SurfaceMaterial *)mat;
objectMaterials.push_back(surfMat);
}
// [old deprecated syntax] Check if there is a texture map associated to the object
if (args.size() > 1) {
// Check if the object has UV coords
if (!meshObject->HasUVs())
throw std::runtime_error("PLY object " + plyFileName + " is missing UV coordinates for texture mapping");
TexMapInstance *tm = texMapCache->GetTexMapInstance(args.at(1), 2.2f);
objectTexMaps.push_back(tm);
objectBumpMaps.push_back(NULL);
objectNormalMaps.push_back(NULL);
} else {
// Check for if there is a texture map associated to the object with the new syntax
const std::string texMap = scnProp->GetString(key + ".texmap", "");
if (texMap != "") {
// Check if the object has UV coords
if (!meshObject->HasUVs())
throw std::runtime_error("PLY object " + plyFileName + " is missing UV coordinates for texture mapping");
const float gamma = scnProp->GetFloat(key + ".texmap.gamma", 2.2f);
TexMapInstance *tm = texMapCache->GetTexMapInstance(texMap, gamma);
objectTexMaps.push_back(tm);
} else
objectTexMaps.push_back(NULL);
/**
* Check if there is an alpha map associated to the object
* If there is, the map is added to a previously added texturemap.
* If no texture map (diffuse map) is detected, a black texture
* is created and the alpha map is added to it. --PC
*/
const std::string alphaMap = scnProp->GetString(key + ".alphamap", "");
if (alphaMap != "") {
// Got an alpha map, retrieve the textureMap and add the alpha channel to it.
const std::string texMap = scnProp->GetString(key + ".texmap", "");
const float gamma = scnProp->GetFloat(key + ".texmap.gamma", 2.2f);
TextureMap *tm;
if (!(tm = texMapCache->FindTextureMap(texMap, gamma))) {
SDL_LOG("Alpha map " << alphaMap << " is for a materials without texture. A black texture has been created for support!");
// We have an alpha map without a diffuse texture. In this case we need to create
// a texture map filled with black
tm = new TextureMap(alphaMap, gamma, 1.0, 1.0, 1.0);
tm->AddAlpha(alphaMap);
TexMapInstance *tmi = texMapCache->AddTextureMap(alphaMap, tm);
// Remove the NULL inserted above, when no texmap was found. Without doing this the whole thing will not work
objectTexMaps.pop_back();
// Add the new texture to the chain
objectTexMaps.push_back(tmi);
} else {
// Add an alpha map to the pre-existing diffuse texture
tm->AddAlpha(alphaMap);
}
}
// Check for if there is a bump map associated to the object
const std::string bumpMap = scnProp->GetString(key + ".bumpmap", "");
if (bumpMap != "") {
// Check if the object has UV coords
if (!meshObject->HasUVs())
throw std::runtime_error("PLY object " + plyFileName + " is missing UV coordinates for bump mapping");
const float scale = scnProp->GetFloat(key + ".bumpmap.scale", 1.f);
BumpMapInstance *bm = texMapCache->GetBumpMapInstance(bumpMap, scale);
objectBumpMaps.push_back(bm);
} else
objectBumpMaps.push_back(NULL);
// Check for if there is a normal map associated to the object
const std::string normalMap = scnProp->GetString(key + ".normalmap", "");
if (normalMap != "") {
// Check if the object has UV coords
if (!meshObject->HasUVs())
throw std::runtime_error("PLY object " + plyFileName + " is missing UV coordinates for normal mapping");
NormalMapInstance *nm = texMapCache->GetNormalMapInstance(normalMap);
objectNormalMaps.push_back(nm);
} else
objectNormalMaps.push_back(NULL);
}
}
SDL_LOG("PLY object count: " << objCount);
//--------------------------------------------------------------------------
// Check if there is an infinitelight source defined
//--------------------------------------------------------------------------
const std::vector<std::string> ilParams = scnProp->GetStringVector("scene.infinitelight.file", "");
if (ilParams.size() > 0) {
const float gamma = scnProp->GetFloat("scene.infinitelight.gamma", 2.2f);
TexMapInstance *tex = texMapCache->GetTexMapInstance(ilParams.at(0), gamma);
// Check if I have to use InfiniteLightBF method
if (scnProp->GetInt("scene.infinitelight.usebruteforce", 0)) {
SDL_LOG("Using brute force infinite light sampling");
infiniteLight = new InfiniteLightBF(tex);
useInfiniteLightBruteForce = true;
} else {
if (ilParams.size() == 2)
infiniteLight = new InfiniteLightPortal(tex, ilParams.at(1));
else
infiniteLight = new InfiniteLightIS(tex);
// Add the infinite light to the list of light sources
lights.push_back(infiniteLight);
useInfiniteLightBruteForce = false;
}
std::vector<float> vf = GetParameters(*scnProp, "scene.infinitelight.gain", 3, "1.0 1.0 1.0");
infiniteLight->SetGain(Spectrum(vf.at(0), vf.at(1), vf.at(2)));
vf = GetParameters(*scnProp, "scene.infinitelight.shift", 2, "0.0 0.0");
infiniteLight->SetShift(vf.at(0), vf.at(1));
infiniteLight->Preprocess();
} else {
infiniteLight = NULL;
useInfiniteLightBruteForce = false;
}
//--------------------------------------------------------------------------
// Check if there is a SkyLight defined
//--------------------------------------------------------------------------
const std::vector<std::string> silParams = scnProp->GetStringVector("scene.skylight.dir", "");
if (silParams.size() > 0) {
if (infiniteLight)
throw std::runtime_error("Can not define a skylight when there is already an infinitelight defined");
std::vector<float> sdir = GetParameters(*scnProp, "scene.skylight.dir", 3, "0.0 0.0 1.0");
const float turb = scnProp->GetFloat("scene.skylight.turbidity", 2.2f);
std::vector<float> gain = GetParameters(*scnProp, "scene.skylight.gain", 3, "1.0 1.0 1.0");
SkyLight *sl = new SkyLight(turb, Vector(sdir.at(0), sdir.at(1), sdir.at(2)));
infiniteLight = sl;
sl->SetGain(Spectrum(gain.at(0), gain.at(1), gain.at(2)));
sl->Init();
useInfiniteLightBruteForce = true;
}
//--------------------------------------------------------------------------
// Check if there is a SunLight defined
//--------------------------------------------------------------------------
const std::vector<std::string> sulParams = scnProp->GetStringVector("scene.sunlight.dir", "");
if (sulParams.size() > 0) {
std::vector<float> sdir = GetParameters(*scnProp, "scene.sunlight.dir", 3, "0.0 0.0 1.0");
const float turb = scnProp->GetFloat("scene.sunlight.turbidity", 2.2f);
const float relSize = scnProp->GetFloat("scene.sunlight.relsize", 1.0f);
std::vector<float> gain = GetParameters(*scnProp, "scene.sunlight.gain", 3, "1.0 1.0 1.0");
SunLight *sunLight = new SunLight(turb, relSize, Vector(sdir.at(0), sdir.at(1), sdir.at(2)));
sunLight->SetGain(Spectrum(gain.at(0), gain.at(1), gain.at(2)));
sunLight->Init();
lights.push_back(sunLight);
}
//--------------------------------------------------------------------------
camera->Update(width, height);
}
void Scene::ParseShapes(const Properties &props) {
vector<string> shapeKeys = props.GetAllUniqueSubNames("scene.shapes");
if (shapeKeys.size() == 0) {
// There are not shape definitions
return;
}
double lastPrint = WallClockTime();
u_int shapeCount = 0;
BOOST_FOREACH(const string &key, shapeKeys) {
// Extract the shape name
const string shapeName = Property::ExtractField(key, 2);
if (shapeName == "")
throw runtime_error("Syntax error in shape definition: " + shapeName);
ExtMesh *mesh = CreateShape(shapeName, props);
if (extMeshCache.IsExtMeshDefined(shapeName)) {
// A replacement for an existing mesh
const ExtMesh *oldMesh = extMeshCache.GetExtMesh(shapeName);
// Replace old mesh direct references with new one and get the list
// of scene objects referencing the old mesh
boost::unordered_set<SceneObject *> modifiedObjsList;
objDefs.UpdateMeshReferences(oldMesh, mesh, modifiedObjsList);
// For each scene object
BOOST_FOREACH(SceneObject *o, modifiedObjsList) {
// Check if is a light source
if (o->GetMaterial()->IsLightSource()) {
const string objName = o->GetName();
// Delete all old triangle lights
lightDefs.DeleteLightSourceStartWith(objName + TRIANGLE_LIGHT_POSTFIX);
// Add all new triangle lights
SDL_LOG("The " << objName << " object is a light sources with " << mesh->GetTotalTriangleCount() << " triangles");
for (u_int i = 0; i < mesh->GetTotalTriangleCount(); ++i) {
TriangleLight *tl = new TriangleLight();
tl->lightMaterial = o->GetMaterial();
tl->mesh = mesh;
tl->triangleIndex = i;
tl->Preprocess();
lightDefs.DefineLightSource(objName + TRIANGLE_LIGHT_POSTFIX + ToString(i), tl);
}
editActions.AddActions(LIGHTS_EDIT | LIGHT_TYPES_EDIT);
}
}
}
extMeshCache.DefineExtMesh(shapeName, mesh);
++shapeCount;
const double now = WallClockTime();
if (now - lastPrint > 2.0) {
SDL_LOG("Shape count: " << shapeCount);
lastPrint = now;
}
}
SDL_LOG("Shape count: " << shapeCount);
editActions.AddActions(GEOMETRY_EDIT);
}