problems 3D OOXML to ODF

[Regina Henschel <regina.henschel@libreoffice.org>]

Hi members,

problem lists in attachment

Kind regard,
Regina

A simple 3D model has four aspects
1. geometry of object
2. material of object, for example how object reacts to light.
3. lighting of scene
4. camera of scene


item 1: Object Geometry
=============== 
OOXML: elements "bevelT" and "bevelB" with 12 presets
ODF extruded custom-shapes: nothing similar
ODF dr3d-objects: two kinds with dr3d:edge-rounding and dr3d:edge-rounding-mode

OOXML element "flatTx" (Text included in 3D or not)
ODF extruded custom-shapes: no statement about text
ODF dr3d-objects: no text at all


item 2: Material
================
OOXML: attribute "prstMaterial". These presets use the properties "specular color", "specular power", "diffuse color", "ambient color", "emissive color", "diffuse fresnel effect" and "alpha fresnel effect".
ODF extruded custom-shapes: partly, flag "metal" , attributes "extrusion-specular", "extrusion-shininess", "extrusion-diffusion"
ODF dr3d-objects: partly, dr3d:ambient-color, dr3d:diffuse-color, dr3d:emissive-collor, dr3d:specular-color, dr3d:shininess
ODF both: nothing similar to the two "fresnel effect" attributes

OOXML: attribute "contourClr"
ODF: nothing similar


item 3: Lighting
================
OOXML: element "lightRig". The implementation by Microsoft uses "ambient color", "light colors", "light directions", "scale", "offset", "specular" and "diffuse". Up to four lights, not only gray, intensity on each color channel, greater 1 and negative.
ODF extruded custom-shapes: partly, only two lights, intensity not per channel which is de facto color gray
ODF dr3d-scene: partly, "offset" is missing, color instead of intensity


item 4: Camera
==============
OOXML: element "camera". Attributes "fov" (field of view) and "rot" (rotation) or preset.
ODF extruded custom-shapes: party, z-Rotation is missing
ODF dr3d-objects: can be represented

OOXML: element "backdrop".
ODF extruded custom-shapes: nothing similar
ODF dr3d-scene: partly by dr3d:shadow-slant


OOXML: The element "scene3d" is usable with group of shapes
ODF extruded custom-shapes: only 1 shape
ODF dr3d-objects: possible