tiles

.gitmodules

@@ -4,3 +4,9 @@
 [submodule "glTF"]
 	path = glTF
 	url = https://github.com/KhronosGroup/glTF.git
+[submodule "glTF-Sample-Models"]
+	path = glTF-Sample-Models
+	url = https://github.com/KhronosGroup/glTF-Sample-Models.git
+[submodule "3d-tiles-samples"]
+	path = 3d-tiles-samples
+	url = https://github.com/AnalyticalGraphicsInc/3d-tiles-samples.git

3d-tiles-samples @ 1d6b1d28

+Subproject commit 1d6b1d28b7750cb6db4a97d614d0e3278fd7c7b9

Paper/3D Tile Formats.txt

+https://github.com/AnalyticalGraphicsInc/3d-tiles/tree/master/TileFormats
+
+Each tile starts with a 4-byte ANSI string, magic
+
+
 Batch Table
 	JSON Header (UTF8), Binary Body
 	bound to tile fomats (specified , and batch lenght)
@@ -5,20 +10,19 @@ Batch Table
 	2 referenc in binary (offset, type..) -> float vec3 -> array
 	
 Feature Table
-	A Feature Table describes position and appearance properties for each feature in a tile. The Batch Table, on the other hand, contains per-feature application-specific metadata not necessarily used for rendering.
-	header + binary
+	A Feature Table describes position and appearance properties for each feature in a tile.
+	The Batch Table, on the other hand, contains per-feature application-specific metadata not necessarily used for rendering.
+	header + binary (siehe batch table)
 	
 	
 Batched 3D Model .b3dm
-	batchLenght number of features (models)
-	magic - version - byteLenght - batchTableJSONByteLenght -batchTableBinaryLenght -batchLenght
-	batchTable, BinaryglTF
+	batchtable, featuretable, BinaryGLTF
 	Batchtable contains model specific MetaData (styling, ..)
 	every vertex has a batchID (technique parameter sematic _BATCHID)
 	
-Instanced 3D Model
+Instanced 3D Model .i3dm
 	rendering slight variations (position ), same model with properties
-	inludes feature table and batch table
+	batchtable, featuretable, BinaryGLTF or url to gltf
 	maps well to Opengl ANGLED instance arrays https://www.khronos.org/registry/webgl/extensions/ANGLE_instanced_arrays/
 	Semantics:
 		Position
@@ -26,8 +30,45 @@ Instanced 3D Model
 		Scale
 		Batch_ID 
 	x is right, y up, z forward
-	unreal kann in irgendeiner weise instancing
-	octet further reading: http://jcgt.org/published/0003/02/01/
+	TODO: unreal Instancing, gibt da wohl was
+	TODO: octet further reading: http://jcgt.org/published/0003/02/01/
 	
+Point Cloud	
+	featureTable, batch table
+	jeder punklt ein feature
+	Sematics: Position, RGBA, Normale, BatchID ...
 	
+Composite .cmpt
+	different tiles into node
+	tile Array
+	indentifaction by inner tile header (magic) and leanght
+	Composites can contain compoites
+
+Vector Data
+	normal Geometry points, polylines, polygons
+	no specs, just links to cesium 
+	http://cesiumjs.org/tutorials/Geometry-and-Appearances/
 	
+OpenStreetMap
+	Cesium uses Batched 3D Model
+	
+MAssiv Model
+	heavywight Models in contrat to Batchend 3d Model with large number of individual models
+	steht och nciht vile dazu das Format
+	
+UnrealGLTFLoader
+	https://github.com/RobertPoncelet/UnrealGLTFLoader
+	uses Tiny glTF Loader
+	studium Projekt
+	funtioniert nicht mit unreal engine 4.14 (implementiert 4.12
+		Static mesh hat sich verändert
+	code, naja, Imnport static mesh ist 400 Zeilen lang
+	
+	
+Tiny glTF Loader
+	gltf & binary gltf
+	currently no skin
+	uses libraries:
+		picojson.h 
+		base64
+		stb_image.h
\ No newline at end of file

Paper/Summary.txt

@@ -36,6 +36,7 @@ glTF -GL Transmission Format "JPEG for 3D"
 	(Animationen / skinning / bones )
 	glTF/loaders : c# threejs
 	Unreal: https://github.com/RobertPoncelet/UnrealGLTFLoader
+		https://issues.unrealengine.com/issue/UE-16059
 	binary gltf
 	
 3D tiles -> Specification for streaming massive heterogeneous 3D geospatial datasets.

glTF-Sample-Models @ 5cee21ea

+Subproject commit 5cee21ea1191ff8b488be85a7f6e5832cca0d978