Presentación de Juan Carlos Ricalde Poveda (@jucaripo): Importación y uso de ficheros Collada en iOS

1. NSCoders
México
Metal
Framework
Collabra Import
Por Juan C. Ricalde Poveda
A.K.A. “jucaripo”
CTO FricMartinez.com y FricAnimation.com
NSCoder Nights

2. NSCoders
México
Desarrollo de un Visor de
Modelos 3D para IOS usando el
formato Collada y OpenGL ES

3. NSCoders
México
¿Quien usa colgada? ?
- Desarrolladores 3D
- Artistas 3D
- Desarrolladores de Video Juegos
- Cualquiera que desea crear 3D

4. NSCoders
México
Tecnologia involucrada.
- Xcode 6
- IOS 8 Scene Kit, Metal

5. NSCoders
México
Hola , Collada Viewer
Si deseas bajar el codigo en GitHub
https://github.com/jucaripo/ColladaModelViewer

6. NSCoders
México
¿Que es COLLADA?
COLLADA (COLLAborative Design Activity), formato del archivo de intercambio para modelos 3D.
COLLADA es un Schema XML standard para modelos 3D.
actualmente es manejado por el Grupo Khronos, quien se encarga de los estándares OpenGL, OpenGL ES.
El formato fue creado por Sony Computer Entertainment por Rémi Artaud y Mark C. Barnes.
este fue liberado al Grupo Kronos y usa la licencia SCEA Shared Source License.
en Marzo del 2011 el Grupo Khronos lanza un Test suite para poder importar y exportar al formato Collada archivo.dae
el sitio oficial de Collada es http://collada.org

7. NSCoders
México
¿Que programas pueden soportan collada ?
• 3ds Max (ColladaMax)
• Adobe Photoshop
• Allplan
• ArtiosCAD
• Blender
• Bryce
• Carrara
• Cheddar Cheese Press (model processor)
• Chief Architect Software
• Cinema 4D (MAXON)
• CityEngine
• CityScape
• Clara.io
• Cura
• DAZ Studio
• E-on Vue 9 xStream
• Esko Studio
• FreeCAD
• FormZ
• GPure
• Houdini (Side Effects Software)
• iBooks Author
• LightWave 3D (v 9.5)
• MakeHuman
• Maya (ColladaMaya)
• MeshLab
• Mobile Model Viewer (Android)
• Modo
• Okino PolyTrans for bidirectional Collada conversions
• OpenRAVE
• Poser Pro (v 7.0)
• Presagis Creator
• Robot Operating System
• SAP Visual Enterprise Author
• Shade 3D (E Frontier, Mirye)
• SketchUp (v 8.0) – KMZ file is a zip file containing a KML file
• Softimage|XSI
• Strata 3D
• Ürban PAD
• Vectorworks
• Visual3D Game Development Tool for Collada scene
• Wings 3D
• Xcode (v 4.4)

8. NSCoders
México
¿Que Game Engine pueden soportan collada ?
• Ardor3D
• Blender Game Engine
• C4 Engine
• CryEngine 2
• GamePlay
• GLGE
• Irrlicht Engine
• Panda3d
• SceneKit
• ShiVa
• Spring
• Torque 3D
• Turbulenz
• Unigine
• Unity
• Unreal Engine
• Vanda Engine
• Visual3D Game Engine
• Neoaxis 3d Game Engine
• HPL Engine

9. NSCoders
México
¿Como lo puedo usar en IOS ?
Scene Kit (Objective-C) - An Objective-C framework introduced in OS X 10.8 Mountain Lion
that allows reading, high-level manipulation and display of COLLADA scenes.
Scene Kit is a 3D-rendering Objective-C framework that combines a high-performance rendering engine with a high-
level, descriptive API. Scene Kit supports the import, manipulation, and rendering of 3D assets without requiring the exact
steps to render a scene the way OpenGL does.
At a Glance
With Scene Kit you can:
• Import COLLADA 3D objects and build scenes composed by cameras, lights, and meshes.
• Manipulate the bounding volumes, geometry, and materials used in a scene.
• Load 3D content using an interexchange format supported by all major content creations apps (using DAE (digital
asset exchange) files.
• Add live interaction with loaded 3D content.
• Integrate your app with other OS X technologies such as Core Animation and GLKit to add overlays and textures for
the 3D objects in your scenes.
• Use Xcode to preview, inspect, and adjust DAE files for Scene Kit to help integrate them into your app.

10. NSCoders
México
Scene Kit que puede hacer

11. NSCoders
México
Scene Kit que puede hacer
https://developer.apple.com/library/ios/documentation/SceneKit/Reference/SceneKit_Framework/
Class / Protocol Description
SCNView & SCNSceneRenderer
A view that displays (or renders) SceneKit content and a protocol that defines
important methods for use with SceneKit views.
SCNScene
The container for all SceneKit content. You load a scene from a file created in a
3D authoring tool or create one programmatically, then display it in a view.
SCNNode
The basic building block of a scene. A hierarchy of nodes defines the logical
structure of a scene, and you provide visible content by attaching geometries,
lights, and cameras to nodes.
SCNGeometry
A three-dimensional object that can be attached to a node. A geometry
(sometimes called a model or mesh) defines only the form or shape for a visible
object. To define the surface appearance of the object you attach materials to it.
SCNMaterial
A reusable definition of surface appearance properties for an object. Materials
specify how a surface is colored or textured and how it responds to lights in the
scene.
SCNLight
A light source that can be attached to a node, providing shading in the rendered
scene.
SCNCamera
A virtual camera that can be attached to a node, providing a point of view for
rendering a scene.

12. NSCoders
México
Que compone un archivo collada.

13. NSCoders
México
Ejemplo de archivos
En la carpeta art.scnassets
Se encuentran los archivos .dae de colada
y los .png de las texturas de los modelos.

14. NSCoders
México
Ver como muestra el archivo Xcode

15. NSCoders
México
Ver como muestra el archivo Xcode preview

16. NSCoders
México
Ver como muestra el archivo Xcode Source Code

17. NSCoders
México
¿Preguntas…?