SELECTION OF A VIEWPOINT OF A SET OF OBJECTS

• US 20160188159A1
• Filed: 12/30/2015
• Published: 06/30/2016
• Est. Priority Date: 12/30/2014
• Status: Active Application

• Current Assignee: Dassault Systemes SA
• Original Assignee: Dassault Systemes SA
• Inventors: DAYDE, Guillaume, DELFINO, Christophe
• Application Number:
  US14/984,527
• Publication Number:
  US 20160188159A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/04815 Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
• CPC Class Codes: G06F 30/00 Computer-aided design [CAD]
• CPC Class Codes: G06T 15/08 Volume rendering
• CPC Class Codes: G06T 17/20 Finite element generation, e.g. wire-frame surface description, tesselation
• CPC Class Codes: G06T 19/20 Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
• CPC Class Codes: G06T 2200/24 involving graphical user interfaces [GUIs]
• CPC Class Codes: G06T 2210/12 Bounding box
• CPC Class Codes: G06T 2219/2016 Rotation, translation, scaling

Abstract

A computer-implemented method for selecting a viewpoint of a set of objects in a bounding box. The bounding box comprising at least one volume wherein the set of objects is enclosed. The method comprises identifying faces of the at least one volume, associating with each identified face a viewpoint on the set of object, selecting, upon user action, one of the faces associated with one viewpoint, and displaying a view of the set of objects according to the viewpoint associated with the selected face.

Claims

1. :

A computer-implemented method for selecting a viewpoint of a set of objects in a bounding box, the bounding box comprising at least one volume wherein the set of objects is enclosed, comprising;

identifying faces of the at least one volume;

associating with each identified face a viewpoint on the set of objects;

selecting, upon user action, one of the faces associated with one viewpoint; and

displaying a view of the set of objects according to the viewpoint associated with the selected face.

2. :

The computer-implemented method of claim 1, wherein identifying faces of the at least one volume comprises;

determining an outline of the at least one volume;

identifying one or more visible faces inside the outline; and

identifying one or more non-visible faces associated with at least one portion of the outline.

3. :

The computer-implemented method of claim 2, wherein the selecting one of the faces further comprises;

detecting a user action at a given distance of a portion of the outline; and

selecting the non-visible face associated with the portion of the outline near which the user action has been detected.

4. :

The computer-implemented method of claim 1, wherein the bounding box and the at least one volume are one among a rectangular cuboid, a cube.

5. :

The computer-implemented method of claim 1, further comprising, before identifying faces of the at least one volume;

providing a set of objects forming an assembly, the objects of the set being three-dimensional modeled objects and the assembly being a three-dimensional modeled assembly;

computing a simplified view of the three-dimensional modeled assembly, the computed simplified view being a view of one three-dimensional objects representing the assembly with a reduced scale and forming one single mesh; and

displaying the simplified view, the at least one volume being represented on the simplified view and enclosing the representation of the three-dimensional modeled of the simplified view.

6. :

The computer-implemented method of claim 5, wherein computing the simplified view of the three-dimensional modeled assembly comprises;

associating a transformation matrix with the assembly of three-dimensional modeled objects, the transformation matrix representing a set of information of the three-dimensional modeled objects of the assembly; and

computing the simplified view from the transformation matrix and the assembly, the computed simplified view being the view of one three-dimensional object representing the assembly with a reduced scale and forming one single mesh.

7. :

The computer-implemented method of claim 6, wherein the set of information represented by the transformation matrix comprises at least;

an orientation (x,y,z) of the objects in the three-dimensional scene, said orientation using the global orientation of the three-dimensional scene;

a scale factor; and

the position of the three-dimensional modeled objects in the three-dimensional scene.

8. :

The computer-implemented method according to claim 5, wherein the simplified view is displayed in a three-dimensional scene which is different from the three-dimensional scene wherein the view of the set of objects is displayed.

9. :

The computer-implemented method of claim 8, wherein selecting one of the faces associated with one viewpoint is carried out on the simplified view on which the at least one volume is represented.

10. :

A non-transitory computer readable storage medium having recorded thereon a computer program that when executed by a computer causes the computer to execute the method of claim 1.

11. :

A computer system for selecting a viewpoint of a set of objects in a bounding box, the bounding box comprising at least one volume wherein the set of objects is enclosed, comprising processing circuitry coupled to a memory and a graphical user interface, the memory having recorded thereon instructions that when executed by the processing circuitry cause the processing circuitry to be configured to;

identify faces of the at least one volume;

associate with each identified face a viewpoint on the set of objects;

select upon user action, one of the faces associated with one viewpoint; and

display a view of the set of objects according to the viewpoint associated with the selected face.