CN111179430B - Method for displaying linear engineering BIM model at webpage end - Google Patents
Method for displaying linear engineering BIM model at webpage end Download PDFInfo
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- CN111179430B CN111179430B CN201911295836.8A CN201911295836A CN111179430B CN 111179430 B CN111179430 B CN 111179430B CN 201911295836 A CN201911295836 A CN 201911295836A CN 111179430 B CN111179430 B CN 111179430B
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000001960 triggered effect Effects 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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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
- G06T17/10—Constructive solid geometry [CSG] using solid primitives, e.g. cylinders, cubes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
Abstract
A method for exposing a linear engineering BIM model at a web site, comprising: receiving a display instruction triggered by a user, wherein the display instruction comprises information for displaying a section of a preset area of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; displaying the section of the BIM model in sequence based on the matched characteristic points; the order is determined from the display instructions; the feature point database comprises BIM model feature points collected in advance, wherein the BIM model feature points comprise a cutting plane position, a cutting plane angle, a cutting direction and a camera position corresponding to the cutting plane position, the cutting plane angle and the cutting plane direction. The method can directly and quickly position the section of the model, and provides a more visual and efficient checking means.
Description
Technical Field
The invention relates to the technical field of BIM model display, in particular to a method for displaying a linear engineering BIM model at a webpage end.
Background
The Building Information Model (BIM) is a three-dimensional building model built based on various relevant information data of a building engineering project, and simulates real information of a building through digital information. The method has the eight characteristics of information completeness, information relevance (parameterization), information consistency, visualization, coordination, simulation, optimality and diagonality. Project participants such as a construction unit, a design unit, a construction unit, a supervision unit and the like share the same BIM model on the same platform, so that project visualization and fine construction are facilitated.
When the BIM model is displayed at the webpage end at the present stage, only the BIM model is displayed, when the detail part of the model is checked, the model is firstly required to be cut by a cutting tool, and when the cutting surface is opened, a BIM display engine generates a default cutting surface; then the cutting surface is manually moved up and down, left and right, front and back, rotation and the like until the position of the cutting surface is adjusted; and the BIM model is required to be enlarged, reduced and angle-adjusted until the position of a camera in the BIM model engine is adjusted, so that the BIM model effect to be displayed can be achieved. Therefore, when BIM model display is carried out at the webpage end in the prior art, only a simple viewing function is provided, when model details are viewed, only a cutting surface can be manually created, then the cutting surface is moved, and the model display effect is adjusted, so that the display purpose can be achieved. Time and labor are wasted, the efficiency is low, and the best display effect of the BIM model cannot be guaranteed.
Therefore, there is a need for an efficient means to quickly display the interior of the BIM model.
Disclosure of Invention
First, the technical problem to be solved
In order to solve the above problems in the prior art, the present invention provides a method for displaying a linear engineering BIM model at a web page end. The method can directly and quickly position the section of the model, and provides a more visual and efficient checking means.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
a method for exposing a linear engineering BIM model at a web site, comprising: receiving a display instruction triggered by a user, wherein the display instruction comprises information for displaying a section of a preset area of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; displaying the section of the BIM model in sequence based on the matched characteristic points; the order is determined from the display instructions; the feature point database comprises BIM model feature points collected in advance, wherein the BIM model feature points comprise a cutting plane position, a cutting plane angle, a cutting direction and a camera position corresponding to the cutting plane position, the cutting plane angle and the cutting plane direction.
As an improvement of the method of the present invention, comprising: the display instruction is an inquiry display instruction, and the inquiry display instruction comprises information for displaying a section of a preset position of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting surface of the BIM model based on the matched characteristic points.
As an improvement of the method of the present invention, comprising: the display instruction is a play display instruction, and the play display instruction comprises information for displaying a section along the trend of the BIM model from the current position of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; and displaying the section of the BIM model along the trend of the BIM model according to the preset adjacent characteristic point display time interval from the current position of the BIM model based on the matched characteristic points.
As an improvement of the method of the present invention, comprising: the display instruction is an instruction for suspending display, and the instruction for suspending display comprises information for displaying a section of the current position of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting surface of the BIM model based on the matched characteristic points.
As an improvement of the method of the present invention, the method includes displaying the instruction as an instruction to move forward for display, the instruction to move forward for display including information for displaying a section forward along the BIM model from a current position of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; based on the matched characteristic points, starting from the current position of the BIM model, displaying the length of the instruction duration along the cutting plane of the BIM model forwards according to the preset adjacent characteristic point display time interval.
As an improvement of the method of the present invention, comprising: the display instruction is an instruction for backward movement display, and the instruction for backward movement display comprises information for displaying a section backward along the BIM model from the current position of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; based on the matched characteristic points, starting from the current position of the BIM model, displaying time intervals according to preset adjacent characteristic points, and displaying the instruction duration time length of the section of the BIM model backwards along the BIM model.
As an improvement of the method of the present invention, comprising: the display instruction is an instruction for restoring display, and the instruction for restoring display comprises information for displaying a section of the initial position of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting surface of the BIM model based on the matched characteristic points.
As an improvement of the method of the present invention, a section of the BIM model is displayed, comprising: and adjusting the position of the camera to enable the cutting surface of the BIM model to be displayed at the center of the display window in a preset angle, a preset position and a preset size.
As an improvement of the method of the present invention, before receiving the display instruction from the user, further comprising: according to the BIM model and preset BIM model key points, BIM model feature points between adjacent key points are automatically fitted through linear interpolation; constructing a characteristic point database according to the BIM model key points and the BIM model characteristic points; the BIM key points comprise a cutting plane position, a cutting plane angle, a cutting direction and a camera position corresponding to the cutting plane position, the cutting plane angle and the cutting plane direction.
As an improvement of the method of the present invention, before receiving the display instruction from the user, further comprising: setting a section position, a section angle and a section direction which are matched with a camera path according to a preset camera path; selecting BIM model feature points from the camera path and the position, angle and direction of the section matched with the camera path according to a preset rule, and constructing a feature point database; the camera path is set based on the line center line of the linear engineering.
(III) beneficial effects
The beneficial effects of the invention are as follows:
1. the invention considers the characteristics of linear engineering such as highway, railway, rail traffic and the like, and by means of presetting the information of the cutting plane of the BIM model and the corresponding camera position, the mutual relation between the cutting plane and the BIM model is automatically matched when the cutting plane is moved through a simple control, and the model cutting plane is directly and quickly positioned, so that a more visual and efficient checking means is provided.
2. And selecting BIM model feature points from the camera path and the position, angle and direction of the section matched with the camera path, and taking the flexibility of the linear engineering into consideration, wherein the obtained feature point data is comprehensive and accurate.
3. Based on the method of the invention, the functions of 'inquiring', 'playing', 'suspending', 'forward moving', 'backward moving', 'recovering' and the like of the BIM model are realized at the webpage end, the user can flexibly select the six functions according to the details of the model to be checked, the section of the model is directly and rapidly positioned, and the state of the self-adaptive adjusting model in the display window is realized, thereby achieving the display purpose and reducing the complicated process of manually selecting the section and adjusting the model.
Drawings
The invention is described with the aid of the following figures:
FIG. 1 is a flowchart of a method for displaying a linear engineering BIM model at a web page end in an embodiment of the invention;
FIG. 2 is a schematic diagram of playing BIM model according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pause BIM model in accordance with an embodiment of the invention;
FIG. 4 is a schematic diagram of a moving, scaling, rotating BIM model in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram of a forward moving BIM model in accordance with an embodiment of the invention;
FIG. 6 is a schematic diagram of a backward moving BIM model in an embodiment of the invention;
FIG. 7 is a schematic diagram of recovering BIM model in an embodiment of the invention.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.
The linear engineering referred to by the present invention refers to linear engineering such as road, railway, and rail transit line.
The invention provides a method for displaying a linear engineering BIM model at a webpage end, which is shown in figure 1 and comprises the following steps: and receiving a display instruction triggered by a user, wherein the display instruction comprises information for displaying the section of the preset area of the BIM model. Extracting matched characteristic points from a characteristic point database according to the information; displaying the section of the BIM model in sequence based on the matched characteristic points; the order is determined from the display instructions. The feature point database comprises BIM model feature points collected in advance, wherein the BIM model feature points comprise a cutting plane position, a cutting plane angle, a cutting direction and a camera position corresponding to the cutting plane position, the cutting plane angle and the cutting plane direction. By means of preset information of the cutting plane of the BIM model and the corresponding camera position, the mutual relation between the cutting plane and the BIM model is automatically matched when the cutting plane is moved through a simple control.
Preferably, before receiving the display instruction triggered by the user, the method further comprises:
according to the BIM model and preset BIM model key points, BIM model feature points between adjacent key points are automatically fitted through linear interpolation; constructing a characteristic point database according to the BIM model key points and the BIM model characteristic points; the BIM key points comprise a cutting plane position, a cutting plane angle, a cutting direction and a camera position corresponding to the cutting plane position, the cutting plane angle and the cutting plane direction.
Or setting a section position, a section angle and a section direction which are matched with a camera path according to a preset camera path; selecting BIM model feature points from the camera path and the position, angle and direction of the section matched with the camera path according to a preset rule, and constructing a feature point database; the camera path is set based on the line center line of the linear engineering.
In order to efficiently and rapidly show the interior of the BIM model, the invention realizes the functions of ' inquiring ', ' playing ', ' suspending ', ' moving forward ', ' moving backward ', recovering ' and the like of the BIM model on the webpage side based on the method, and the method is concretely as follows.
Querying: and receiving a user-triggered query display instruction, wherein the query display instruction comprises information for displaying a section of a preset position of the BIM model. Extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting surface of the BIM model based on the matched characteristic points. The user inputs mileage information to be checked and can directly locate the section at the corresponding position.
And (3) playing: and receiving a user-triggered instruction for playing and displaying, wherein the instruction for playing and displaying comprises information for displaying a section along the trend of the BIM from the current position of the BIM. Extracting matched characteristic points from a characteristic point database according to the information; and displaying the section of the BIM model along the trend of the BIM model according to the preset adjacent characteristic point display time interval from the current position of the BIM model based on the matched characteristic points. In the form of animation, the section continuously moves from the current position of the BIM model to the tail of the BIM model, as shown in figure 2
Pause: and receiving a user-triggered instruction for suspending display, wherein the instruction for suspending display comprises information for displaying a section of the current position of the BIM model. Extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting surface of the BIM model based on the matched characteristic points. The slice plane to the current position is located directly while the BIM model can be moved, scaled, rotated to see details of the current model, as shown in fig. 3, 4.
Forward movement: the method includes receiving a user-triggered instruction to move a display forward, the instruction to move the display forward including information for displaying a section forward along the BIM model from a current location of the BIM model. Extracting matched characteristic points from a characteristic point database according to the information; based on the matched characteristic points, starting from the current position of the BIM model, displaying the length of the instruction duration along the cutting plane of the BIM model forwards according to the preset adjacent characteristic point display time interval. When the user clicks or presses for a long time, the section moves forward in an animation form, as shown in fig. 5; after the mouse is sprung, the mouse is positioned to a section of the current position, and meanwhile, the BIM model can be moved, zoomed and rotated to view the details of the current model.
And (3) backward moving: receiving a user-triggered instruction to move the display backward, the instruction to move the display backward including information for displaying a section backward along the BIM model from a current position of the BIM model. Extracting matched characteristic points from a characteristic point database according to the information; based on the matched characteristic points, starting from the current position of the BIM model, displaying time intervals according to preset adjacent characteristic points, and displaying the instruction duration time length of the section of the BIM model backwards along the BIM model. When the user clicks or presses for a long time, the section moves backward in an animation form, as shown in fig. 6; after the mouse is sprung, the mouse is positioned to a section of the current position, and meanwhile, the BIM model can be moved, zoomed and rotated to view the details of the current model.
And (5) recovering: receiving a user-triggered instruction for restoring display, wherein the instruction for restoring display comprises information for displaying a section of the initial position of the BIM model; extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting surface of the BIM model based on the matched characteristic points. The cut surface is directly positioned to the initial position, and the initial state is restored, as shown in fig. 7.
Preferably, displaying the cut surface of the BIM model includes: and adjusting the position of the camera to enable the cutting surface of the BIM model to be displayed at the center of the display window in a preset angle, a preset position and a preset size.
Aiming at the characteristics of linear engineering, the invention provides a more visual and efficient checking means. The user can flexibly select the six functions according to the model details to be checked, directly and quickly position the section of the model, and adaptively adjust the state of the model in a display window so as to achieve the display purpose. Reduces the complicated process of manually selecting the section and adjusting the model.
It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and is for enabling those skilled in the art to understand the present invention and implement it accordingly, but the present invention is not limited to the above-described specific embodiments. All changes or modifications that come within the scope of the appended claims are intended to be embraced therein.
Claims (9)
1. A method for exposing a linear engineering BIM model at a web site, the method comprising:
receiving a display instruction triggered by a user, wherein the display instruction comprises information for displaying a section of a preset area of the BIM model, and the display instruction is mileage information to be checked by the user;
extracting matched characteristic points from a characteristic point database according to the information; displaying the section of the BIM model in sequence based on the matched characteristic points; the order is determined from the display instructions;
the feature point database comprises pre-collected BIM model feature points, wherein the BIM model feature points comprise a section position, a section angle, a section direction and a camera position corresponding to the section position, the section angle and the section direction;
before receiving the display instruction triggered by the user, the method further comprises the following steps:
according to the BIM model and preset BIM model key points, BIM model feature points between adjacent key points are automatically fitted through linear interpolation;
constructing a feature point database according to the BIM model key points and the BIM model feature points;
the BIM key points comprise a cutting plane position, a cutting plane angle, a cutting direction and a camera position corresponding to the cutting plane position, the cutting plane angle and the cutting plane direction.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the display instruction is an instruction for inquiring and displaying, and the instruction for inquiring and displaying comprises information for displaying a section of a preset position of the BIM model;
extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting plane of the BIM model based on the matched characteristic points.
3. The method according to claim 1, comprising
The display instruction is an instruction for playing and displaying, and the instruction for playing and displaying comprises information for displaying a section along the trend of the BIM from the current position of the BIM;
extracting matched characteristic points from a characteristic point database according to the information; and displaying the section of the BIM model along the trend of the BIM model according to the preset adjacent characteristic point display time interval from the current position of the BIM model based on the matched characteristic points.
4. The method according to claim 1, comprising
The display instruction is an instruction for suspending display, and the instruction for suspending display comprises information for displaying a section of the current position of the BIM model;
extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting plane of the BIM model based on the matched characteristic points.
5. The method according to claim 1, comprising
The display instruction is an instruction for forward movement display, and the instruction for forward movement display comprises information for displaying a section forward along the BIM model from the current position of the BIM model;
extracting matched characteristic points from a characteristic point database according to the information; and based on the matched characteristic points, starting from the current position of the BIM model, displaying the length of the instruction duration along the cutting plane of the BIM model forward according to the preset adjacent characteristic point display time interval.
6. The method according to claim 1, comprising
The display instruction is an instruction for backward movement display, and the instruction for backward movement display comprises information for displaying a backward section along the BIM model from the current position of the BIM model;
extracting matched characteristic points from a characteristic point database according to the information; and based on the matched characteristic points, starting from the current position of the BIM model, displaying the length of the instruction duration along the cutting plane of the BIM model backwards according to the preset adjacent characteristic point display time interval.
7. The method according to claim 1, comprising
The display instruction is an instruction for restoring display, and the instruction for restoring display comprises information for displaying a section of the initial position of the BIM model;
extracting matched characteristic points from a characteristic point database according to the information; and displaying the cutting plane of the BIM model based on the matched characteristic points.
8. The method of any one of claims 1 to 7, wherein displaying the cut surface of the BIM model comprises
And adjusting the position of the camera to enable the cutting surface of the BIM model to be displayed at the center of the display window in a preset angle, a preset position and a preset size.
9. The method of claim 1, further comprising, prior to said receiving the user-triggered display instruction:
setting a section position, a section angle and a section direction which are matched with a camera path according to the preset camera path;
selecting BIM model feature points from the camera path and the matched section position, section angle and section direction according to a preset rule, and constructing a feature point database;
the camera path is set based on a line centerline of the linear project.
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