Geometric modeling method and device for building

Abstract

The invention discloses a geometric modeling method and device for a building. The method comprises the following steps of determining the business parameter information of the three-dimensional modeling of the building; converting the business parameter information into the general parameter information required by general body modeling; and based on the converted general parameter information, constructing a general body according to a modeling method of the general body, and constructing a three-dimensional model of the building by using the general body. According to the method and the device, the three-dimensional modeling of the complex building is simply and quickly realized.

Description

technical field

[0001] The invention belongs to the technical field of architectural design, and in particular relates to a geometric modeling method and device for a building body. Background technique

[0002] In the prior art, the definition of geometric topology data used for the modeling of 3D model geometry is generally as follows:

[0003] Definition of geometric topology:

[0004] 1) Two-dimensional curve (Curve 2D);

[0005] 2) Three-dimensional curve (Curve 3D);

[0006] 3) surface (Surface);

[0007] 4) vertex (Vertex);

[0008] 5) Edge (Edge);

[0009] 6) Face (Face);

[0010] 7) Body.

[0011] Definition of a geometric general solid:

[0012] 1) Extrude Body;

[0013] 2) Revolve Body;

[0014] 3) Sweep Body;

[0015] 4) Cube (Cubic Body);

[0016] 5) Polyhedron (Polyhydron Body);

[0017] 6) Boundary representation body (Brep Body, which can represent an object of any shape).

[0018] The above definition is a common way to define geometry that has...

Examples

Embodiment 1

[0079] see figure 1 , Embodiment 1 of the present invention provides a geometric modeling method of a building body, the method includes the following steps:

[0080] (1) Determine the business parameter information for three-dimensional modeling of the building body.

[0081]The building body is the basic unit of the building, such as: wall, beam, plate, column, etc., and the whole building is composed of these basic units.

[0082] Parametric design of buildings is a method of architectural design. The core idea of ​​this method is to turn all the elements of architectural design into variables of a certain function. By changing the function, or changing the algorithm, we can obtain different Architectural modeling scheme. This method is simply understood as a method that can automatically generate a design scheme through computer technology. The real parametric design is a method of selecting parameters to establish a program and transforming architectural design issues ...

Embodiment 2

[0105] Embodiment 2 of the present invention provides a method for geometrically modeling a wall according to the method of Embodiment 1.

[0106] For buildings, walls are the most widely used, and how to build walls quickly is very important. At the same time, for other building objects, such as: columns, beams, slabs, stairs and other building objects, it is also necessary to use this method for rapid construction.

[0107] The geometrical modeling method of described body of wall comprises:

[0108] (1) Determine the business parameter information for three-dimensional modeling of the wall.

[0109] The business parameter information includes:

[0110] 1) Curve data of the wall: CCurve2d*pCurve2d;

[0111] 2) The thickness from the curve to the left side of the wall: double dLeftWidth;

[0112] 3) Wall thickness: double dWallWidth;

[0113] 4) The inclination angle of the wall: double dLeftAngle, the inclination angle is expressed in radians, the left inclination of th...

Embodiment 3

[0128] Embodiment 3 of the present invention provides a method for geometric modeling of earthwork grading bodies performed in the manner of Embodiment 1.

[0129] The geometrical modeling method of described earthwork grading body comprises:

[0130] (1) Determine the business parameter information for 3D modeling of the earthwork grading body.

[0131] The business parameter information includes:

[0132] 1) Three-dimensional Cartesian coordinate system: CCoordinates3d&placement;

[0133] 2) lower bottom surface: CPolygon*pPolygon, the lower bottom surface can be a two-dimensional area of ​​any shape;

[0134] 3) Grading height: double dHeight;

[0135] 4) Grading width of each side: double*pdWidths.

[0136] (2) Converting the business parameter information of the earthwork grading body into general parameter information required for modeling the boundary representation body (Brep body).

[0137] To construct objects in the shape of earthwork grading bodies, the bounda...

technical field

[0001] The invention belongs to the technical field of architectural design, and in particular relates to a geometric modeling method and device for a building body. Background technique

[0002] In the prior art, the definition of geometric topology data used for the modeling of 3D model geometry is generally as follows:

[0003] Definition of geometric topology:

[0004] 1) Two-dimensional curve (Curve 2D);

[0005] 2) Three-dimensional curve (Curve 3D);

[0006] 3) surface (Surface);

[0007] 4) vertex (Vertex);

[0008] 5) Edge (Edge);

[0009] 6) Face (Face);

[0010] 7) Body.

[0011] Definition of a geometric general solid:

[0012] 1) Extrude Body;

[0013] 2) Revolve Body;

[0014] 3) Sweep Body;

[0015] 4) Cube (Cubic Body);

[0016] 5) Polyhedron (Polyhydron Body);

[0017] 6) Boundary representation body (Brep Body, which can represent an object of any shape).

[0018] The above definition is a common way to define geometry that has...

Examples

Embodiment 1

[0079] see figure 1 , Embodiment 1 of the present invention provides a geometric modeling method of a building body, the method includes the following steps:

[0080] (1) Determine the business parameter information for three-dimensional modeling of the building body.

[0081]The building body is the basic unit of the building, such as: wall, beam, plate, column, etc., and the whole building is composed of these basic units.

[0082] Parametric design of buildings is a method of architectural design. The core idea of ​​this method is to turn all the elements of architectural design into variables of a certain function. By changing the function, or changing the algorithm, we can obtain different Architectural modeling scheme. This method is simply understood as a method that can automatically generate a design scheme through computer technology. The real parametric design is a method of selecting parameters to establish a program and transforming architectural design issues ...

Embodiment 2

[0105] Embodiment 2 of the present invention provides a method for geometrically modeling a wall according to the method of Embodiment 1.

[0106] For buildings, walls are the most widely used, and how to build walls quickly is very important. At the same time, for other building objects, such as: columns, beams, slabs, stairs and other building objects, it is also necessary to use this method for rapid construction.

[0107] The geometrical modeling method of described body of wall comprises:

[0108] (1) Determine the business parameter information for three-dimensional modeling of the wall.

[0109] The business parameter information includes:

[0110] 1) Curve data of the wall: CCurve2d*pCurve2d;

[0111] 2) The thickness from the curve to the left side of the wall: double dLeftWidth;

[0112] 3) Wall thickness: double dWallWidth;

[0113] 4) The inclination angle of the wall: double dLeftAngle, the inclination angle is expressed in radians, the left inclination of th...

Embodiment 3

[0128] Embodiment 3 of the present invention provides a method for geometric modeling of earthwork grading bodies performed in the manner of Embodiment 1.

[0129] The geometrical modeling method of described earthwork grading body comprises:

[0130] (1) Determine the business parameter information for 3D modeling of the earthwork grading body.

[0131] The business parameter information includes:

[0132] 1) Three-dimensional Cartesian coordinate system: CCoordinates3d&placement;

[0133] 2) lower bottom surface: CPolygon*pPolygon, the lower bottom surface can be a two-dimensional area of ​​any shape;

[0134] 3) Grading height: double dHeight;

[0135] 4) Grading width of each side: double*pdWidths.

[0136] (2) Converting the business parameter information of the earthwork grading body into general parameter information required for modeling the boundary representation body (Brep body).

[0137] To construct objects in the shape of earthwork grading bodies, the bounda...

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