Patent EP0640943A2 successfully refreshed from Google Patents.
EP0640943A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Shape modeling apparatus and method
Assignee: Canon Inc
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Filing: 1994-08-22
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Granted: —
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Expires: 2014-08-22
Abstract
Abstract When one part is designated in designing the layout of a unit comprising a plurality of parts, a cross section of this part is set as a "sketch surface" automatically. The designer creates a two-dimensional figure, which relates to a design change, in this sketch surface. A CAD apparatus generates a three-dimensional shape based upon this two-dimensional figure.
Inventors
- 👤 Kazuma C/O Canon K. K. Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 01:56
CPC Classifications
G; G06; G06T; G06T17/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
61 words
A modeling apparatus for generating and displaying a three-dimensional shape of a part, comprising: first designating means for designating a sketch surface in association with the shape of one part on a display screen; sketching means for sketching a desired two-dimensional figure in the designated sketch surface; and generating means for generating a three-dimensional shape based upon the two-dimensional figure sketched.
Claim 2
Dependent Claim
25 words
The apparatus according to claim 1, wherein said first designating means designates one surface of the shape of said one part as the sketch surface.
Claim 3
Dependent Claim
50 words
The apparatus according to claim 1, further comprising second designating means for designating, based upon the two-dimensional figure sketched, a generating method of generating a three-dimensional shape, wherein said generating means generates the three-dimensional shape, based upon the two-dimensional figure, by the generating method designated by said second designating means.
Claim 4
Dependent Claim
46 words
The apparatus according to claim 1, wherein said first designating means has: means for designating direction of a view on the display screen; and third designating means for designating the surface of the one part as the sketch surface in the designated direction of the view.
Claim 5
Dependent Claim
65 words
The apparatus according to claim 4, further comprising: memory means for storing the direction of the view designated by said third designating means; means for altering and designating a target part; and means for adopting, as the sketch surface for the target part, from among surfaces of the part altered and designated, a surface in the direction of the view stored by said memory means.
Claim 6
Dependent Claim
49 words
The apparatus according to claim 5, further comprising: fourth designating means for designating alteration of a target part; and means for selecting a specific part, from among a plurality of target parts, in accordance with a prescribed sequence whenever said fourth designating means designates alteration of a target part.
Claim 7
Dependent Claim
73 words
The apparatus according to claim 1, wherein said first designating means has: means for designating directions of different first and second views on the display screen; means for designating the surface of the one part as the sketch surface in the direction of the first view; and said generating means generating the three-dimensional shape from the sketched two-dimensional shape utilizing a cross section of this part in the direction of the second view.
Claim 8
Dependent Claim
14 words
The apparatus according to claim 6, wherein said sequence is capable of being changed.
Claim 9
Dependent Claim
28 words
The apparatus according to claim 4, wherein the direction of the view one among a front-side direction, top-side direction, right-side direction, left-side direction, bottom-side direction and back-side direction.
Claim 10
Dependent Claim
21 words
The apparatus according to claim 9, wherein a pseudo-three-dimensional image is displayed in addition to the designation direction of the view.
Claim 11
Independent Claim
56 words
A method of generating and displaying a three-dimensional shape of a part, comprising the steps of: (a) designating a sketch surface in association with the shape of one part on a display screen; (b) sketching a desired two-dimensional figure in the designated sketch surface; and (c) generating a three-dimensional shape based upon the two-dimensional figure sketched.
Claim 12
Dependent Claim
24 words
The method according to claim 11, wherein said step (a) designates one surface of the shape of said one part as the sketch surface.
Claim 13
Dependent Claim
38 words
The method according to claim 11, further comprising: designating, based upon the two-dimensional figure sketched, a generating method of generating a three-dimensional shape; and generating the three-dimensional shape, based upon the two-dimensional figure, by the designated generating method.
Claim 14
Dependent Claim
39 words
The method according to claim 11, further comprising the steps of: designating direction of a view on the display screen; and designating the surface of the one part as the sketch surface in the designated direction of the view.
Claim 15
Dependent Claim
50 words
The method according to claim 14, further comprising the steps of: storing the designated direction of the view; altering a target part; and adopting, as the sketch surface for the target part, from among surfaces of the part altered and designated, a surface in the direction of the view stored.
Claim 16
Dependent Claim
43 words
The method according to claim 15, further comprising the steps of: designating alteration of a target part; and selecting a specific part, from among a plurality of target parts, in accordance with a prescribed sequence whenever alteration of a target part is designated.
Claim 17
Dependent Claim
65 words
The method according to claim 11, further comprising the steps of: designating directions of different first and second views on the display screen; designating the surface of the one part as the sketch surface in the direction of the first view; and generating the three-dimensional shape from the sketched two-dimensional shape utilizing a cross section of this part in the direction of the second view.
Claim 18
Dependent Claim
14 words
The method according to claim 16, wherein said sequence is capable of being changed.
Claim 19
Dependent Claim
28 words
The method according to claim 14, wherein the direction of the view one among a front-side direction, top-side direction, right-side direction, left-side direction, bottom-side direction and back-side direction.
Claim 20
Dependent Claim
21 words
The method according to claim 19, wherein a pseudo-three-dimensional image is displayed in addition to the designation direction of the view.
References Cited (Backward Citations)
No citation records indexed.
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