Sorry Regina This info does not make sense to me. I am not a programmer, nor have I ever been involved in creating software. I am at the other end — a user. I need a definition that I can understand and use to create an explanation for a user.
Regards Peter Schofield [email protected] > On 17 Apr 2020, at 13:04, Regina Henschel <[email protected]> wrote: > > Hi Peter, > > Peter Schofield schrieb am 17-Apr-20 um 10:55: >> Could someone please give me the definitions for 3D scenes and 3D shapes >> that LO Draw can produce. Doing a Google search is not helping me. > > a first step would be to look, what kind of shapes exist in the ODF standard. > http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html > There you find section "10.5 3D Shapes". > > The outmost 3D-object is always a scene, an element <dr3d:scene>. > Such scene can contain: > cube (element <dr3d:cube>) > sphere (element <dr3d:sphere>) > object, which is generated from a 2D path by rotation (element <dr3d:rotate>) > object, which is generated from a 2D path by extrusion (element > <dr3d:extrude>) > inner scene (element <dr3d:scene>) > > An inner scene works the same as grouping does for 2D-objects. But there is > no UI to generate such inner scene in LibreOffice and I have not tested yet, > whether it would work, when LibreOffice gets a document using such inner > scene. At least some code I have read consider it. > > The outer 3D scene provides the connection to the page. It defines the > position and size of the resulting object in the page. The 3D-world is > projected to a 2D plane. What you get on the 2D plane is then scaled to fit > into the size, specified at the 3D scene. Such projection can be done as > parallel projection or as central perspective. > > Those are "true" 3D-objects. > > > In addition and not to be confused with "true" 3D-objects, there exists the > "custom shape" (element <draw:custom-shape>), section 10.6. > Most of the shapes in the UI of LibreOffice belong to this kind of shape and > the Fontwork shapes belong to this kind of shape too. > A custom-shape has an extrusion mode. In this mode, the shape is shown as 3D > extrusion object. But it is only a mode and you can toggle 2D and 3D mode. > > Kind regards > Regina > > > > > > > -- > To unsubscribe e-mail to: [email protected] > Problems? > https://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ > Posting guidelines + more: https://wiki.documentfoundation.org/Netiquette > List archive: https://listarchives.libreoffice.org/global/documentation/ > Privacy Policy: https://www.documentfoundation.org/privacy -- To unsubscribe e-mail to: [email protected] Problems? https://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: https://wiki.documentfoundation.org/Netiquette List archive: https://listarchives.libreoffice.org/global/documentation/ Privacy Policy: https://www.documentfoundation.org/privacy
