CN115187725B - Suspended ceiling modeling method - Google Patents
Suspended ceiling modeling method Download PDFInfo
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- CN115187725B CN115187725B CN202210689031.7A CN202210689031A CN115187725B CN 115187725 B CN115187725 B CN 115187725B CN 202210689031 A CN202210689031 A CN 202210689031A CN 115187725 B CN115187725 B CN 115187725B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2210/00—Indexing scheme for image generation or computer graphics
- G06T2210/04—Architectural design, interior design
Abstract
The invention discloses a ceiling modeling method, which comprises the following steps: step 1, acquiring three-dimensional model data of a target house, and generating a contour map A of a target ceiling to be suspended in the target house according to the three-dimensional model data of the target house; step 2, acquiring a profile diagram B of the bottom surface of the suspended ceiling model drawn in the profile diagram A; step 3, obtaining a thickness parameter H of the suspended ceiling model, and generating a suspended ceiling rough blank model based on the outline drawing B and the thickness parameter H; step 4, obtaining a contour map C of the ceiling modeling, and drawing the contour map C on a modeling surface of a ceiling rough blank model; and 5, acquiring three-dimensional coordinate parameters of each image point in the contour map C, and deforming the modeling surface of the suspended ceiling rough model based on the three-dimensional coordinate parameters of each image point to generate the suspended ceiling model. The invention can effectively avoid the problem that the built suspended ceiling model is easy to be mismatched with the actual house model.
Description
Technical Field
The invention belongs to the technical field of three-dimensional modeling, and particularly relates to a ceiling modeling method.
Background
At present, three-dimensional modeling techniques in the prior art are various, but no special modeling software exists for ceiling modeling in decoration construction, and the current ceiling modeling mainly adopts modeling software for independent modeling, so that the problem that the ceiling modeling is easy to be careless and is not matched with an actual house model due to the fact that the actual house model is separated from the ceiling modeling is easy to occur.
Disclosure of Invention
The invention aims to solve the technical problems that the prior art is insufficient, and provides a ceiling modeling method which can effectively avoid the problem that a built ceiling model is easy to be mismatched with an actual house model.
In order to solve the technical problems, the invention adopts the following technical scheme: a ceiling modeling method comprising the steps of:
step 1, acquiring three-dimensional model data of a target house, and generating a contour map A of a target ceiling to be suspended in the target house according to the three-dimensional model data of the target house;
step 2, acquiring a profile diagram B of the bottom surface of the suspended ceiling model drawn in the profile diagram A;
step 3, obtaining a thickness parameter H of the suspended ceiling model, and generating a suspended ceiling rough blank model based on the outline drawing B and the thickness parameter H;
step 4, obtaining a contour map C of the ceiling modeling, and drawing the contour map C on a modeling surface of a ceiling rough blank model;
and 5, acquiring three-dimensional coordinate parameters of each image point in the contour map C, and deforming the modeling surface of the suspended ceiling rough model based on the three-dimensional coordinate parameters of each image point to generate the suspended ceiling model.
In the ceiling modeling method, in the step 5, based on the three-dimensional coordinate parameters of each image point, deforming the modeling surface of the ceiling rough model to generate the ceiling model includes the following steps:
step 5-1, acquiring a three-dimensional coordinate parameter-Z or +Z of the image point; when the three-dimensional coordinate parameter of the image point is-Z, executing step 5-2; when the three-dimensional coordinate parameter of the image point is +Z, executing the step 5-3;
step 5-2, corresponding the image points to points on the molding surface, and sinking the image points into the ceiling rough model for Z distances by taking the molding surface as a reference and the direction perpendicular to the molding surface to form concave holes;
and 5-3, corresponding the image points to the points on the molding surface, and projecting the image points to the outside of the suspended ceiling rough blank model for Z distances by taking the molding surface as a reference and taking the direction perpendicular to the molding surface as a reference to form convex columns.
In the ceiling modeling method, the contour line of the contour map C is a modeling path line; deforming the modeling surface of the suspended ceiling rough blank model to generate a suspended ceiling model finger: concave or convex Z distances are formed in the surface area of the outline drawing C on the molding surface;
step 5 further comprises obtaining a section pattern, wherein the contour line of the section pattern is a spline line;
and generating a ring model with the cross section being the cross section pattern along the extending direction of the side wall at the side wall of the concave cavity or the boss.
According to the ceiling modeling method, in the step 1, according to the three-dimensional model data of the target house, a profile diagram A of a target ceiling of the target house, which needs to be suspended, is generated, and the method comprises the following steps:
step 1-1, analyzing three-dimensional model data of a target house to obtain a bottom view of a roof model in the three-dimensional model data of the target house;
step 1-2, identifying a plurality of vertices in a bottom view of the roof model;
and step 1-3, calling a plurality of vertexes, and connecting the vertexes sequentially by lines to generate an SVG vector graph as a contour graph A.
In the ceiling modeling method, when the profile map B of the bottom surface of the ceiling model drawn in the profile map a is obtained in the step 2, the profile map B is drawn based on the SVG modeling method.
The ceiling modeling method further comprises a step 6 of rendering the ceiling model generated in the step 5.
The ceiling modeling method, the step 6 further includes setting a lamp slot for the generated ceiling model, including the following steps:
step 6-1, drawing a lamp groove section D at the side wall of the concave cavity or the boss;
and 6-2, generating a ring with the section of the lamp groove section D along the extending direction of the side wall at the side wall of the concave cavity or the boss to form the lamp groove.
In the ceiling modeling method, step 6 further includes generating a light strip in the light trough of the generated ceiling model.
Compared with the prior art, the invention has the following advantages: according to the invention, the profile diagram B of the bottom surface of the suspended ceiling model drawn in the profile diagram A is obtained, so that the finally established suspended ceiling model can be effectively matched with a house; drawing the profile C on the molding surface of the ceiling rough blank model; based on three-dimensional coordinate parameters of each image point of the contour map C, the modeling surface of the ceiling rough model is deformed to generate a ceiling model, so that various decorative models on the ceiling model can be conveniently generated.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a schematic diagram of the relationship between profile a and profile B.
Fig. 3 is a schematic diagram of the relationship among profile a, profile B, and profile C.
Fig. 4 is a schematic diagram showing the relationship between a cross-sectional image and a lamp groove cross-section D.
Fig. 5 is a three-dimensional partial schematic view of a suspended ceiling model.
Detailed Description
As shown in fig. 1, a ceiling modeling method is characterized by comprising the following steps:
step 1, as shown in fig. 2, obtaining three-dimensional model data of a target house, generating a contour map A of a target ceiling to be suspended in the target house according to the three-dimensional model data of the target house, and obtaining the thickness of the target ceiling, wherein the distance h between the target ceiling and the ground is equal to the distance h between the target ceiling and the ground;
in the step 1, according to the three-dimensional model data of the target house, a contour map a of a target ceiling to be suspended in the target house is generated, and the method comprises the following steps:
step 1-1, analyzing three-dimensional model data of a target house to obtain a bottom view of a roof model in the three-dimensional model data of the target house;
step 1-2, identifying a plurality of vertices in a bottom view of the roof model;
and step 1-3, calling a plurality of vertexes, and connecting the vertexes sequentially by lines to generate an SVG vector graph as a contour graph A.
Step 2, as shown in fig. 2, obtaining a profile B of the bottom surface of the ceiling model drawn in the profile a;
and when the profile map B of the bottom surface of the suspended ceiling model drawn in the profile map A is obtained in the step 2, the profile map B is drawn based on an SVG modeling method.
In practical application, the SVG vector graphics obtained in the step 1-3 are contour diagrams A which can be directly called, and when a designer draws the contour diagrams B through an SVG modeling method, the contour diagrams B are constrained by the contour diagrams A, namely the contour diagrams B need to be in the closed range of the contour diagrams A, and in addition, the contour diagrams B which are similar to the contour diagrams A can be easily drawn through the existence of the contour diagrams A.
Step 3, obtaining a thickness parameter H of the suspended ceiling model, and generating a suspended ceiling rough blank model based on the outline drawing B and the thickness parameter H;
it should be noted that, the thickness parameter H (the hanging parameter) is input and obtained by a designer, and specifically, when the thickness parameter H is input, if the thickness parameter H is greater than the distance H from the ceiling to the ground, the error will be reported, so as to avoid the design error. The method is characterized in that the ceiling rough blank model is a cube, the outline drawing B is the length and the width of the cube, the thickness parameter H is the height of the cube, and a designer only needs to draw the outline drawing B and then input the thickness parameter H to generate the three-dimensional ceiling rough blank model, so that the method is convenient and quick;
step 4, obtaining a contour map C of the ceiling modeling, and drawing the contour map C on a modeling surface of a ceiling rough blank model as shown in fig. 3;
the molding surface can be any surface of the ceiling rough model, usually the bottom surface of the ceiling rough model, and the outline drawing C is drawn by a designer;
and 5, acquiring three-dimensional coordinate parameters of each image point in the contour map C, and deforming the modeling surface of the suspended ceiling rough model based on the three-dimensional coordinate parameters of each image point to generate the suspended ceiling model.
In this embodiment, the deforming the molding surface of the ceiling blank model to generate the ceiling model in step 5 based on the three-dimensional coordinate parameters of each image point includes the following steps:
step 5-1, acquiring a three-dimensional coordinate parameter-Z or +Z of the image point, wherein Z is a real number; when the three-dimensional coordinate parameter of the image point is-Z, executing step 5-2; when the three-dimensional coordinate parameter of the image point is +Z, executing the step 5-3;
step 5-2, corresponding the image points to points on the molding surface, and sinking the image points into the ceiling rough model for Z distances by taking the molding surface as a reference and the direction perpendicular to the molding surface to form concave holes;
and 5-3, corresponding the image points to the points on the molding surface, and projecting the image points to the outside of the suspended ceiling rough blank model for Z distances by taking the molding surface as a reference and taking the direction perpendicular to the molding surface as a reference to form convex columns.
It should be noted that, assuming that a convex ring needs to be generated on the molding surface, the contour map C is a circle, and three-dimensional coordinate parameters of a plurality of image points on the circle are all +z.
Through the mode, a designer only needs to design the contour map C and then designs three-dimensional coordinate parameters for points in the contour map C, and the needed modeling can be conveniently generated.
In this embodiment, the contour map C is a pattern of rounded rectangles, and the three-dimensional coordinate parameters of each image point in the contour line are the same, and are all-Z (hanging parameters).
In this embodiment, the contour line of the contour map C is a modeling path line; deforming the modeling surface of the suspended ceiling rough blank model to generate a suspended ceiling model finger: concave or convex Z distances are formed in the surface area of the outline drawing C on the molding surface;
step 5 further comprises obtaining a section pattern, wherein the contour line of the section pattern is a spline line;
and generating a ring model with the cross section being the cross section pattern along the extending direction of the side wall at the side wall of the concave cavity or the boss.
As shown in FIG. 4, a cross-sectional image is provided on the inner side of the side wall of the cavity, and the cross-sectional image can be preset, and when the cross-sectional image is actually rotated, the vertical cross section of the suspended ceiling model is displayed, so that the convenience is brought to the understanding of the designer.
In this embodiment, the method further includes a step 6 of rendering the suspended ceiling model generated in the step 5.
During rendering, materials and color features can be added to the suspended ceiling model.
As shown in fig. 4, in this embodiment, the step 6 further includes providing a light trough for the generated ceiling model, including the following steps:
step 6-1, drawing a lamp groove section D at the side wall of the concave cavity or the boss;
and 6-2, generating a ring with the section of the lamp groove section D along the extending direction of the side wall at the side wall of the concave cavity or the boss to form the lamp groove.
Step 6 also includes generating a light strip in the light trough of the generated ceiling model.
In addition, the light strip is a preset component and can be directly added into the light groove, and the light strip can be further provided with light source attributes.
The final generated ceiling model is shown with reference to fig. 5. In addition, in the implementation process of the ceiling modeling method, point data and line data are stored to the cloud in real time, so that data loss is avoided, secondary editing and use of a ceiling model are also facilitated, and the like
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (6)
1. A ceiling modeling method, comprising the steps of:
step 1, acquiring three-dimensional model data of a target house, and generating a contour map A of a target ceiling to be suspended in the target house according to the three-dimensional model data of the target house;
step 2, acquiring a profile diagram B of the bottom surface of the suspended ceiling model drawn in the profile diagram A;
step 3, obtaining a thickness parameter H of the suspended ceiling model, and generating a suspended ceiling rough blank model based on the outline drawing B and the thickness parameter H;
step 4, obtaining a contour map C of the ceiling modeling, and drawing the contour map C on a modeling surface of a ceiling rough blank model;
step 5, acquiring three-dimensional coordinate parameters of each image point in the contour map C, and deforming the modeling surface of the suspended ceiling rough model based on the three-dimensional coordinate parameters of each image point to generate a suspended ceiling model;
in the step 5, based on the three-dimensional coordinate parameters of each image point, deforming the modeling surface of the ceiling rough model to generate the ceiling model includes the following steps:
step 5-1, acquiring a three-dimensional coordinate parameter-Z or +Z of the image point; when the three-dimensional coordinate parameter of the image point is-Z, executing step 5-2; when the three-dimensional coordinate parameter of the image point is +Z, executing the step 5-3;
step 5-2, corresponding the image points to points on the molding surface, and sinking the image points into the ceiling rough model for Z distances by taking the molding surface as a reference and the direction perpendicular to the molding surface to form concave holes;
step 5-3, corresponding the image points to points on the molding surface, and projecting the image points to the outside of the ceiling rough blank model for Z distances by taking the molding surface as a reference and taking the direction perpendicular to the molding surface to form convex columns;
the contour line of the contour map C is a modeling path line; deforming the modeling surface of the suspended ceiling rough blank model to generate a suspended ceiling model finger: concave or convex Z distances are formed in the surface area of the outline drawing C on the molding surface;
step 5 further comprises obtaining a section pattern, wherein the contour line of the section pattern is a spline line;
and generating a ring model with the cross section being the cross section pattern along the extending direction of the side wall at the side wall of the concave cavity or the boss.
2. The ceiling modeling method according to claim 1, wherein the step 1 of generating the outline map a of the target ceiling of the target house requiring the ceiling according to the three-dimensional model data of the target house comprises the steps of:
step 1-1, analyzing three-dimensional model data of a target house to obtain a bottom view of a roof model in the three-dimensional model data of the target house;
step 1-2, identifying a plurality of vertices in a bottom view of the roof model;
and step 1-3, calling a plurality of vertexes, and connecting the vertexes sequentially by lines to generate an SVG vector graph as a contour graph A.
3. The ceiling modeling method according to claim 2, wherein the contour map B is drawn based on the SVG modeling method when the contour map B of the bottom surface of the ceiling model drawn in the contour map a is obtained in the step 2.
4. A method of modeling a suspended ceiling according to claim 1, further comprising step 6 of rendering the suspended ceiling model generated in step 5.
5. A method of modeling a suspended ceiling as defined in claim 4, wherein said step 6 further comprises providing a troffer to the generated suspended ceiling model, comprising the steps of:
step 6-1, drawing a lamp groove section D at the side wall of the concave cavity or the boss;
and 6-2, generating a ring with the section of the lamp groove section D along the extending direction of the side wall at the side wall of the concave cavity or the boss to form the lamp groove.
6. The ceiling modeling method of claim 5, wherein step 6 further comprises generating a light strip into the light trough of the generated ceiling model.
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| CN108170917A (en) * | 2017-12-20 | 2018-06-15 | 巧夺天宫（深圳）科技有限公司 | A kind of furred ceiling threedimensional model drawing system, method, terminal and medium |
| CN109086552A (en) * | 2018-08-30 | 2018-12-25 | 中铁二局集团有限公司 | A kind of furred ceiling design and construction moulding fast modeling method based on BIM |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103198190B (en) * | 2013-04-08 | 2015-10-28 | 北京尔宜居科技有限责任公司 | A kind of rapid Design also shows the method for furred ceiling |
| CN106952346B (en) * | 2017-03-31 | 2020-07-14 | 王征 | System and method for generating suspended ceiling 3D model based on drawing plane polygon |
| CN111369424A (en) * | 2020-02-10 | 2020-07-03 | 北京城市网邻信息技术有限公司 | Method, device, equipment and storage medium for generating three-dimensional space of target house |
| CN111881506A (en) * | 2020-08-05 | 2020-11-03 | 四川优家库信息技术有限公司 | Ceiling modeling generation method |
| CN112257131B (en) * | 2020-09-18 | 2023-10-03 | 杭州群核信息技术有限公司 | Method for realizing suspended ceiling overlooking effect graph based on matrix transformation |
| CN114528622A (en) * | 2022-02-11 | 2022-05-24 | 杭州群核信息技术有限公司 | Display method and display device for projecting background wall on 2D plane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170917A (en) * | 2017-12-20 | 2018-06-15 | 巧夺天宫（深圳）科技有限公司 | A kind of furred ceiling threedimensional model drawing system, method, terminal and medium |
| CN109086552A (en) * | 2018-08-30 | 2018-12-25 | 中铁二局集团有限公司 | A kind of furred ceiling design and construction moulding fast modeling method based on BIM |
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