CN115187725A - Suspended ceiling modeling method - Google Patents
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- CN115187725A CN115187725A CN202210689031.7A CN202210689031A CN115187725A CN 115187725 A CN115187725 A CN 115187725A CN 202210689031 A CN202210689031 A CN 202210689031A CN 115187725 A CN115187725 A CN 115187725A
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Abstract
The invention discloses a suspended 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 needing a suspended ceiling in the target house according to the three-dimensional model data of the target house; step 2, obtaining 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 contour diagram B and the thickness parameter H; step 4, obtaining a contour drawing C of the ceiling model, and drawing the contour drawing C on the modeling surface of the ceiling rough blank model; and 5, acquiring the three-dimensional coordinate parameter of each image point in the contour map C, and deforming the modeling surface of the suspended ceiling rough blank model to generate the suspended ceiling model based on the three-dimensional coordinate parameter of each image point. The invention can effectively avoid the problem that the built ceiling model is easy to be unmatched with the actual house model.
Description
Technical Field
The invention belongs to the technical field of three-dimensional modeling, and particularly relates to a suspended ceiling modeling method.
Background
At present, three-dimensional modeling technologies in the prior art are various, but no special modeling software exists for suspended ceiling modeling in decoration construction, and the suspended ceiling modeling mainly adopts the modeling software to independently model, so that the suspended ceiling modeling is separated from an actual house model, the suspended ceiling modeling is prone to careless mistakes, and the constructed suspended ceiling model is prone to being unmatched with the actual house model.
Disclosure of Invention
The invention aims to solve the technical problem that the ceiling modeling method is provided for overcoming the defects in the prior art, and can effectively avoid the problem that the built ceiling model is easy to be unmatched with the actual house model.
In order to solve the technical problems, the invention adopts the technical scheme that: a suspended ceiling modeling method 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 needing a suspended ceiling in the target house according to the three-dimensional model data of the target house;
step 2, obtaining 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 contour diagram B and the thickness parameter H;
step 4, obtaining a contour drawing C of the ceiling model, and drawing the contour drawing C on the modeling surface of the ceiling rough blank model;
and 5, acquiring the three-dimensional coordinate parameter of each image point in the contour map C, and deforming the modeling surface of the suspended ceiling rough blank model to generate the suspended ceiling model based on the three-dimensional coordinate parameter of each image point.
In the above ceiling modeling method, the step 5 of deforming the modeling surface of the ceiling blank model to generate the ceiling model based on the three-dimensional coordinate parameter of each image point 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 the step 5-2; when the three-dimensional coordinate parameter of the image point is + Z, executing the step 5-3;
step 5-2, enabling the image points to correspond to points on a modeling surface, and recessing the image points into the suspended ceiling rough blank model for Z distances in a direction perpendicular to the modeling surface by taking the modeling surface as a reference to form recessed holes;
and 5-3, enabling the image points to correspond to points on the modeling surface, and protruding the points out of the suspended ceiling rough blank model by Z distances in a direction perpendicular to the modeling surface by taking the modeling surface as a reference to form convex columns.
In the suspended ceiling modeling method, the contour line of the contour map C is a modeling path line; the method for generating the suspended ceiling model by deforming the modeling surface of the suspended ceiling rough blank model comprises the following steps: forming a concave cavity or a convex boss by the distance of Z from the concave or convex surface area in the contour diagram C on the modeling surface;
the step 5 also comprises the step of obtaining a section pattern, wherein the contour line of the section pattern is a sample line;
and generating a ring shape with the section pattern on the side wall of the concave cavity or the boss along the extension direction of the side wall.
In the above ceiling modeling method, in step 1, according to the three-dimensional model data of the target house, the contour diagram a of the target ceiling of the target house, which needs to be suspended, is generated, which includes the following steps:
step 1-1, analyzing the three-dimensional model data of the 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 vertexes in a bottom view of the roof model;
and 1-3, calling a plurality of vertexes, sequentially connecting the vertexes by lines, and generating an SVG vector graph as a contour graph A.
In the ceiling modeling method, when the profile diagram B of the bottom surface of the ceiling model drawn in the profile diagram A is obtained in the step 2, the profile diagram B is drawn based on the SVG modeling method.
The suspended ceiling modeling method further comprises a step 6 of rendering the suspended ceiling model generated in the step 5.
In the above ceiling modeling method, step 6 further includes setting a light trough for the generated ceiling model, including the following steps:
6-1, drawing a lamp groove section D on the side wall of the concave cavity or the boss;
and 6-2, generating a ring piece with the section being the lamp groove section D along the extension direction of the side wall at the side wall of the concave cavity or the boss to form the lamp groove.
In the above suspended ceiling modeling method, step 6 further includes generating a light strip in a light trough of the generated suspended ceiling model.
Compared with the prior art, the invention has the following advantages: according to the invention, the finally established ceiling model can be effectively matched with the house by acquiring the profile diagram B of the bottom surface of the ceiling model drawn in the profile diagram A; drawing the contour drawing C on a modeling surface of a suspended ceiling rough blank model; and (3) deforming the modeling surface of the suspended ceiling rough blank model to generate a suspended ceiling model based on the three-dimensional coordinate parameters of each image point of the contour diagram C, so that various decoration models on the suspended ceiling model can be conveniently generated.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a relationship diagram of the contour diagram a and the contour diagram B.
Fig. 3 is a relationship diagram of the contour map a, the contour map B and the contour map C.
Fig. 4 is a schematic diagram showing the relationship between the sectional image and the lamp vessel section D.
FIG. 5 is a three-dimensional partial schematic view of a model of a suspended ceiling.
Detailed Description
As shown in fig. 1, a suspended ceiling modeling method is characterized by comprising the following steps:
as shown in fig. 2, step 1, obtaining three-dimensional model data of a target house, generating a profile a of a target ceiling of the target house needing to be suspended, and obtaining the thickness of the target ceiling and the distance h between the target ceiling and the ground according to the three-dimensional model data of the target house;
in the step 1, according to the three-dimensional model data of the target house, an outline A of the target ceiling of the target house needing to be hung is generated, and the method comprises the following steps:
step 1-1, analyzing the three-dimensional model data of the 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 vertexes in a bottom view of the roof model;
and 1-3, calling a plurality of vertexes, sequentially connecting the vertexes by lines, and generating an SVG vector graph as a contour graph A.
As shown in fig. 2, step 2, obtaining a profile B of the bottom surface of the suspended ceiling model drawn in the profile a;
and when the contour drawing B of the bottom surface of the suspended ceiling model drawn in the contour drawing A is obtained in the step 2, drawing the contour drawing B based on an SVG modeling method.
In practical application, the SVG vector graphics obtained in the steps 1-3 are the outline drawing A and can be directly called, when a designer draws the outline drawing B through the SVG modeling method, the drawing B is constrained by the outline drawing A, namely the outline drawing B needs to be in a closed range of the outline drawing A, and in addition, the outline drawing B which is in a similar relation with the outline drawing A can be easily drawn and obtained through the existence of the outline drawing A.
Step 3, obtaining a thickness parameter H of the suspended ceiling model, and generating a suspended ceiling rough blank model based on the contour diagram B and the thickness parameter H;
it should be noted that the thickness parameter H (drop-off parameter) is obtained by inputting 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, an error is reported, so as to avoid a design error. Assuming that the suspended ceiling rough blank model is a cube, the profile B is the length and width of the cube, the thickness parameter H is the height of the cube, and a designer only needs to draw the profile B and input the thickness parameter H to generate a three-dimensional suspended ceiling rough blank model conveniently and quickly;
as shown in fig. 3, step 4, obtaining a profile C of the ceiling model, and drawing the profile C on the modeling surface of the ceiling rough blank model;
the modeling surface can be any surface of the suspended ceiling rough blank model, generally the bottom surface of the suspended ceiling rough blank model, and the contour diagram C is drawn by a designer;
and 5, acquiring the three-dimensional coordinate parameter of each image point in the contour map C, and deforming the modeling surface of the suspended ceiling rough blank model to generate the suspended ceiling model based on the three-dimensional coordinate parameter of each image point.
In this embodiment, the step 5 of deforming the modeling surface of the suspended ceiling rough blank model to generate the suspended ceiling model based on the three-dimensional coordinate parameter of each image point includes the following steps:
step 5-1, obtaining 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 the step 5-2; when the three-dimensional coordinate parameter of the image point is + Z, executing the step 5-3;
step 5-2, enabling the image points to correspond to points on a modeling surface, and recessing the image points into the suspended ceiling rough blank model for Z distances in a direction perpendicular to the modeling surface by taking the modeling surface as a reference to form recessed holes;
and 5-3, enabling the image points to correspond to points on the modeling surface, and protruding the points out of the suspended ceiling rough blank model by Z distances in a direction perpendicular to the modeling surface by taking the modeling 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 profile C is a circle, and the three-dimensional coordinate parameters of the image points on the circle are all + Z.
Through the mode, a designer only needs to design the contour map C and then designs the three-dimensional coordinate parameters for the points in the contour map C, and the required modeling can be generated conveniently.
In this embodiment, the contour map C is a rounded rectangle pattern, and the three-dimensional coordinate parameters of each image point in the contour map are the same and are-Z (hanging down parameter).
In this embodiment, the contour line of the contour map C is a modeling path line; the method for generating the suspended ceiling model by deforming the modeling surface of the suspended ceiling rough blank model comprises the following steps: forming a concave cavity or a convex platform by recessing or protruding Z distance in the surface area in the contour diagram C on the modeling surface;
the step 5 also comprises the steps of obtaining a cross-sectional pattern, wherein the contour line of the cross-sectional pattern is a sample line;
and generating a ring shape with the cross section of the cross section pattern along the extending direction of the side wall at the side wall of the concave cavity or the convex platform.
As shown in fig. 4, a cross-sectional image is provided on the inner side of the sidewall of the cavity, and the cross-sectional image may be preset, so that when the cross-sectional image is actually rotated, the vertical cross-section of the ceiling model is displayed first, which is convenient for the designer to understand.
In this embodiment, the method further includes a step 6 of rendering the suspended ceiling model generated in the step 5.
During the rendering, the suspended ceiling model can be added with material and color characteristics.
As shown in fig. 4, in this embodiment, the step 6 further includes setting a light trough on the generated suspended ceiling model, and includes the following steps:
6-1, drawing a lamp groove section D on the side wall of the concave cavity or the boss;
and 6-2, generating a ring piece with the section being the lamp groove section D along the extension direction of the side wall at the side wall of the concave cavity or the boss to form the lamp groove.
The step 6 further comprises 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 to a light trough, and the light strip can also be configured with light source attributes.
The final ceiling model is shown in fig. 5. It should be noted that the point data and the line data are stored to the cloud end in real time in the implementation process of the suspended ceiling modeling method, so that data loss is avoided, secondary editing and use of the suspended ceiling model are facilitated, and the like
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. A suspended ceiling modeling method is characterized by comprising the following steps:
step 1, acquiring three-dimensional model data of a target house, and generating a contour map A of a target ceiling needing a suspended ceiling in the target house according to the three-dimensional model data of the target house;
step 2, acquiring a contour map B of the bottom surface of the suspended ceiling model drawn in the contour map A;
step 3, obtaining a thickness parameter H of the suspended ceiling model, and generating a suspended ceiling rough blank model based on the contour diagram B and the thickness parameter H;
step 4, obtaining a profile chart C of the suspended ceiling model, and drawing the profile chart C on the modeling surface of the suspended ceiling rough blank model;
and 5, acquiring the three-dimensional coordinate parameter of each image point in the contour map C, and deforming the modeling surface of the suspended ceiling rough blank model to generate the suspended ceiling model based on the three-dimensional coordinate parameter of each image point.
2. The suspended ceiling modeling method of claim 1, wherein the step 5 of deforming the modeling surface of the suspended ceiling blank model to generate the suspended ceiling model based on the three-dimensional coordinate parameters of each image point comprises 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 the step 5-2; when the three-dimensional coordinate parameter of the image point is + Z, executing the step 5-3;
step 5-2, enabling the image points to correspond to points on a modeling surface, and recessing the image points into the suspended ceiling rough blank model for Z distances in a direction perpendicular to the modeling surface by taking the modeling surface as a reference to form recessed holes;
and 5-3, corresponding the image points to points on the modeling surface, and protruding the points out of the suspended ceiling rough blank model by Z distances by taking the modeling surface as a reference and in a direction perpendicular to the modeling surface to form a convex column.
3. The suspended ceiling modeling method of claim 1, wherein the contour lines of the contour map C are modeling path lines; the method for generating the suspended ceiling model by deforming the modeling surface of the suspended ceiling rough blank model comprises the following steps: forming a concave cavity or a convex platform by recessing or protruding Z distance in the surface area in the contour diagram C on the modeling surface;
the step 5 also comprises the step of obtaining a section pattern, wherein the contour line of the section pattern is a sample line;
and generating a ring shape with the section pattern on the side wall of the concave cavity or the boss along the extension direction of the side wall.
4. The suspended ceiling modeling method according to claim 1, wherein the step 1 of generating the contour map a of the target ceiling of the target house to be suspended from the three-dimensional model data of the target house comprises the steps of:
step 1-1, analyzing the three-dimensional model data of the 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 vertexes in a bottom view of the roof model;
and 1-3, calling a plurality of vertexes, sequentially connecting the vertexes by lines, and generating an SVG vector graph as a contour graph A.
5. The suspended ceiling modeling method according to claim 4, wherein when the outline view B of the bottom surface of the suspended ceiling model drawn in the outline view A is acquired in step 2, the outline view B is drawn based on the SVG modeling method.
6. A suspended ceiling modeling method as claimed in claim 1 further comprising step 6 of rendering the suspended ceiling model generated in step 5.
7. A suspended ceiling modeling method in accordance with claim 3 wherein said step 6 further comprises providing a light trough to the generated suspended ceiling model, comprising the steps of:
6-1, drawing a lamp groove section D on the side wall of the concave cavity or the boss;
and 6-2, generating a ring piece with the section being the lamp groove section D along the extension direction of the side wall at the side wall of the concave cavity or the boss to form the lamp groove.
8. A suspended ceiling modeling method in accordance with claim 7, wherein step 6 further comprises generating a light strip in a light trough of the generated suspended ceiling model.
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