Method, apparatus, electronic device, and storage medium for displaying 3D shape in expanded manner

Patent metadata

Field	Value
Publication number	US-11100722-B2
Application number	US-201716635091-A
Country	US
Kind code	B2
Filing date	Dec 17, 2017
Priority date	Aug 21, 2017
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

Provided are a method, an apparatus, an electronic device, and a storage medium for displaying an expansion of a 3D shape, including: determining a 3D shape to be expanded, and acquiring a target expanded state of the 3D shape; searching a preset multi-level information relationship table for an articulation relationship set corresponding to the target expanded state; determining, according to the articulation relationship set and a preset expansion rule library, a target expansion rule for each target plane surface on the 3D shape; and controlling to expand each target plane surface at a predetermined a rate based on the each target expansion rule, and displaying the expansion process in real time. The method dynamically displays an expansion process of a 3D shape to a student, such that the student can understands more about the process of transformation from a 3D shape to a selected expanded state, thereby improving user experience of a teaching demonstration function on an electronic device.

First claim

What is claimed is:

1. A method for displaying an expansion of a three-demonstrational (3D) shape, comprising:
determining a 3D shape to be expanded, wherein the 3D shape is associated with a plurality of expanded states, and each of the plurality of expanded states is identified by a corresponding state identifier;
acquiring a target expanded state from the plurality of expanded states of the 3D shape;
searching a preset multi-level information relationship table for an articulation relationship set corresponding to the target expanded state;
determining, according to the articulation relationship set and a preset expansion rule library, a target expansion rule for each target plane surface on the 3D shape; and
controlling to expand the each target plane surface at a predetermined rate based on the each target expansion rule, and displaying the expansion process in real time.

2. The method of claim 1 , wherein the determining the 3D shape to be expanded, and acquiring the target expanded state from the plurality of expanded states of the 3D shape comprises:
determining the 3D shape to be expanded as one selected by a user from a current interface;
analyzing a geometric form of the 3D shape, and determining, according to the geometric form, a graphic identifier of the 3D shape in the multi-level information relationship table;
determining all state identifiers corresponding to the graphic identifier in the multi-level information relationship table; and
displaying a respective expanded state corresponding to each of the state identifiers on the current interface, and determining an expanded state by trigger selecting one of the expanded states as the target expanded state of the 3D shape.

3. The method of claim 1 , wherein the searching the preset multi-level information relationship table for the articulation relationship set corresponding to the target expanded state comprises:
acquiring a corresponding state identifier of the target expanded state in the multi-level information relationship table; and
searching the multi-level information relationship table for an articulation relationship set corresponding to the state identifier.

4. The method of claim 1 , wherein the determining, according to the articulation relationship set and the preset expansion rule library, the target expansion rule for the each target plane surface on the 3D shape comprises:
searching the preset expansion rule library for a standard expansion rule corresponding to the each standard plane surface in the articulation relationship set; and
determining a respective one target plane surface matching with the each standard plane surface on the 3D shape, and determining the standard expansion rule corresponding to the each standard plane surface as the target expansion rule for the matched target plane surface.

5. The method of claim 1 , wherein the controlling to expand the each target plane surface at a predetermined rate based on the each target expansion rule, and displaying the expansion process in real time comprises:
controlling the each target plane surface to rotate a set rotation angle at the predetermined rate along a rotation direction in the each target expansion rule based on an articulation rotation axis specified in the each target expansion rule.

6. The method of claim 1 , further comprising: building the multi-level information relationship table according to following steps:
initializing the multi-level information relationship table comprising a first-level information column, a second-level information column, and a third-level information column;
storing a graphic identifier m in the first-level information column of the multi-level information relationship table, wherein m is an integer greater than 0, and a value of m denotes a standard 3D shape of a geometrical form;
storing state identifiers m_n corresponding to the graphic identifier m in the second-level information column of the multi-level information relationship table, wherein n is an integer greater than 0, and a value of n denotes an expanded state of a standard 3D shape corresponding to the graphic identifier m; and
storing articulation relationship sets m_n_q corresponding to the state identifiers m_mn in the third-level information column of the multi-level information relationship table, wherein q is an integer greater than 0, and q denotes a q-th articulation relationship set required when the standard 3D shape corresponding to the graphic identifier m reaches an expanded state of a state identifier n.

7. The method according to claim 6 , wherein the q-th articulation relationship set is specifically denoted as:
[standard plane surface 1 q _articulation rotation axis 1 g _standard plane surface 2 g _ . . . standard plane surface k g _articulation rotation axis k g _standard plane surface (k+1) q ], wherein the k is an integer greater than 0, the standard plane surface (k+1) q is a plane surface on the standard 3D shape corresponding to the graphic identifier m, a position and pose state of the plane surface remains unchanged in a process where the expansion reaches the expanded state of the state identifier n; and
wherein the articulation rotation axis k q is a plane intersecting line formed by the standard plane surface k q and the standard plane surface (k+1) q in the standard 3D shape corresponding to the graphic identifier m.

8. The method of claim 1 , further comprising: building the expansion rule library based on articulation relationship sets in the multi-level information relationship table.

9. The method of claim 8 , wherein the building the expansion rule library based on articulation relationship sets in the multi-level information relationship table comprises:
acquiring each articulation relationship set in the multi-level information relationship table, and determining an expanded state corresponding to the each articulation relationship set;
based on the expanded state corresponding to the each articulation relationship set, designating a corresponding standard expansion rule for each standard plane surface in the each articulation relationship set, wherein the standard expansion rule comprises a rotation direction, a set rotation angle and a designated articulation rotation axis that are used by expansion; and
storing the articulation relationship set and the corresponding standard expansion rule for the each standard plane surface in the articulation relationship set to form the expansion rule library.

10. An electronic device, comprising:
one or more processors; and
a storage apparatus, which is configured to store one or more programs;
wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method for displaying an expansion of a 3D shape of claim 1 .

11. A non-transitory computer-readable storage medium, which is configured to store computer programs for performing the method for displaying an expansion of a 3D shape of claim 1 when the programs are executed by a processor.

12. An apparatus for displaying an expansion of a three-demonstrational (3D) shape, comprising:
a target expansion determination module configured to determine a 3D shape to be expanded, wherein the 3D shape is associated with a plurality of expanded states, and each of the plurality of expanded states is identified by a corresponding state identifier, and configured to acquire a target expanded state from the plurality of expanded states of the 3D shape;
an articulation relationship determination module configured to search a preset multi-level information relationship table for an articulation relationship set corres

Assignees

• Guangzhou Shiyuan Electronics Co Ltd
• Guangzhou Shirui Electronics Co Ltd

Inventors

• Ye Hong

Classifications

• G06T19/00 Primary

  Manipulating three-dimensional [3D] models or images for computer graphics · CPC title

• G09B5/02 Primary

  with visual presentation of the material to be studied, e.g. using film strip · CPC title

• G06T13/20

  Three-dimensional [3D] animation · CPC title

• G06T2219/2008

  Assembling, disassembling · CPC title

• G06F16/5854

  using shape and object relationship · CPC title