| 330 | } |
| 331 | |
| 332 | Ref<Shape> Object::RecalcShadow(int level, const FrameBase& frame, bool retainStructure, LODShapeWithShadow* forceShape) |
| 333 | { |
| 334 | // all polygons cast shadows |
| 335 | // project all points to ground level |
| 336 | int i; |
| 337 | Matrix4Val iTrans = frame.GetInvTransform(); |
| 338 | float y = GEngine->ZShadowEpsilon(); |
| 339 | |
| 340 | Ref<LODShape> shadow = nullptr; |
| 341 | if (!forceShape) |
| 342 | { |
| 343 | forceShape = _shape; |
| 344 | } |
| 345 | if (retainStructure) |
| 346 | { |
| 347 | // note: _shape may be used only when retainStructure is true |
| 348 | forceShape->CreateShadow(); |
| 349 | shadow = forceShape->Shadow(); |
| 350 | } |
| 351 | else |
| 352 | { |
| 353 | shadow = forceShape->MakeShadow(); |
| 354 | } |
| 355 | |
| 356 | if (!shadow) |
| 357 | { |
| 358 | return nullptr; |
| 359 | } |
| 360 | Ref<Shape> shape = shadow->Level(level); |
| 361 | Shape* orig = forceShape->Level(level); |
| 362 | if (shape && shape->NFaces() >= 0) |
| 363 | { |
| 364 | Vector3Val lightDir = GScene->MainLight()->ShadowDirection(); |
| 365 | Vector3 modelLightDir = iTrans.Rotate(lightDir); |
| 366 | if ((orig->GetAndHints() & ClipDecalMask) == ClipDecalVertical && |
| 367 | (orig->GetOrHints() & ClipDecalMask) == ClipDecalVertical) |
| 368 | { |
| 369 | // special case - shadow casted by vertical decal |
| 370 | LOG_DEBUG(Graphics, "Vertical decal shadow obsolete"); |
| 371 | return nullptr; |
| 372 | } |
| 373 | else |
| 374 | { |
| 375 | FaceArray dest; |
| 376 | if (!retainStructure) |
| 377 | { |
| 378 | dest.ReserveFaces(1024, false); |
| 379 | // reserve same size as source |
| 380 | dest.ReserveRaw(shape->Faces().RawSize()); |
| 381 | } |
| 382 | // make sure offsets in both shapes match |
| 383 | |
| 384 | for (Offset f = shape->BeginFaces(), e = shape->EndFaces(); f < e; shape->NextFace(f)) |
| 385 | { |
| 386 | const Poly& sFace = orig->Face(f); |
| 387 | Poly& face = shape->Face(f); |
| 388 | // make sure both sFace and face are valid face pointers |
| 389 | if (face.N() < 3) |
no test coverage detected