TWI729793B - Method of combining multiple 3d digital building models - Google Patents

Abstract

A method of combining multiple 3D building models which is allowable to combine multiple 3D building models at any positions, and delete or hide unnecessary parts to form the appearance of the 3D building model required by the designer, greatly reduce spend a lot of time on working, in order to obtain economic benefits.

Description

Method of combining complex 3D building models

The present invention relates to a method of combining complex three-dimensional building models.

The appearance of a building is often applied to previously designed buildings, such as the roofs, attics, pavilions, etc. of Chinese-style buildings. When designing such buildings, certain architectural features are often repeated on the main body of the building, but The current design method does not provide the function of combining multiple 3D building models. Therefore, the designer still has to draw from scratch, which makes the design and drawing of the 3D building model very tedious and also increases the production cost.

In my country's 2009 paper "3D Architectural Prototype Collage" by Cai Qingyang, he proposed the concept of using 3D collage, and then combined multiple building elements through a simple interface to form the desired architectural appearance. However, the various components separated by the building established in the above paper are separated at the same angle or regularization by default, that is, the collage surface presents a certain angle, so each component can only be reassembled according to the original standard angle. Stickers cannot be combined on any surface according to the needs of the designer. If combined at different angles and positions, conflicts will occur. The conflicting parts of the two 3D building models cannot be deleted or hidden, so it cannot be satisfied. Actual design requirements, but there is a need for improvement.

In view of this, the inventor of the present case made additional research and finally revealed the method of combining plural 3-dimensional building models according to the present invention.

The purpose of the present invention is to provide a method for combining plural 3-dimensional building models, which includes: (a) Create or retrieve at least two 3D building models into a database or catalog, and define the names of each 3D building model and each component; (b) Open a work area, enter the name of the 3D building model specified to be combined, and load the corresponding 3D building model in the database or catalog, and then read each part through the name of each part of the 3D building relevant information; (c) Adjust the combined position and form of the loaded 3D building model; (d) The cross-section of the combination of two 3-dimensional building models; (e) Cut the selected 3-dimensional building model with the cut surface; (f) For the cut 3D building model, delete or hide unnecessary parts; and (g) Complete the combined 3D building model.

The method for combining complex 3D building models disclosed in the present invention, wherein the tangent plane refers to a plane formed by a perpendicular line between the center points of two 3D building models to be combined and a normal line perpendicular to the median line.

The method for combining plural 3-dimensional building models disclosed in the present invention, each of the 3-dimensional building models is composed of a plurality of 3-dimensional components, and the method further establishes the relationship between each of the 3-dimensional components constituting the 3-dimensional building model Relevance.

In the method for combining plural 3-dimensional building models disclosed in the present invention, the correlation between each of the 3-dimensional components refers to the correlation between the relative coordinates of at least two designated 3-dimensional components; or each of the 3-dimensional components and The set reference edge or reference plane or the correlation between the reference points; or the three-dimensional component conforms to the correlation of a function.

The method of combining plural 3-dimensional building models disclosed in the present invention enables the newly combined 3-dimensional building model to delete or hide the 3-dimensional components that do not meet the relevance at the same time.

The method of combining plural 3-dimensional building models disclosed in the present invention allows one of the loaded 3-dimensional building models to be defined as the main building model, and the remaining 3-dimensional building models are defined as sub-building models, so that the master After the building model is combined with a sub-building model, it is redefined as the main building model to be combined with another sub-building model.

The method for assembling complex 3D building models disclosed in the present invention, wherein the cut surface used to cut the 3D building model can be a plane or a curved surface. The above-mentioned curved surface can be a curved surface formed by a free curve or a multi-segmented plane. The multi-fold curved surface is formed, and the cut surface is consistent with the surface of the main building model for combining the joint surface of the sub-building model.

The method for combining plural 3-dimensional building models disclosed in the present invention further includes judging the direction in which the sub-building model joins the main building model, so as to determine the surface of the main building model for receiving the sub-building model, and The surface is defined as the cut surface to cut the sub-building model.

In the method of combining plural 3-dimensional building models disclosed in the present invention, two diagonal lines are calibrated in the overhead direction of the main building model, so that the two diagonal lines divide the main building model into 4 blocks, and make The surface curved surfaces of each block form a tangent plane to cut the sub-building model combined on the block, so that the sub-building model recombined with the main building model can match the surface of the main building model.

The method for assembling plural 3-dimensional building models disclosed in the present invention, wherein the cutting planes used to cut the 3-dimensional building model refer to those that fit any side surface of the main building model along the highest point to the lowest point of the main building model Surface.

The method of combining plural 3-dimensional building models disclosed in the present invention can be clarified by the following description and the accompanying drawings.

Please refer to Fig. 1. The present invention relates to a method for combining complex 3-dimensional building models, which includes: (a) Create or retrieve at least two 3D building models into a database or catalog, and define the names of each 3D building model and each component; (b) Open a work area, enter the name of the 3D building model specified to be combined, and load the corresponding 3D building model in the database or catalog, and then read each part through the name of each part of the 3D building relevant information; (c) Adjust the combined position and form of the loaded 3D building model; (d) The cross-section when establishing the combination of two and three-dimensional building models; (e) Cut the selected 3D building model with the cut surface; (f) Delete or hide the unnecessary parts of the cut 3D building model; and (g) Complete the combined 3D building model.

The method for combining complex 3D building models disclosed in the present invention, wherein the tangent plane refers to a plane formed by the perpendicular line between the center points of the two 3D building models to be combined and the normal line perpendicular to the median line. For example, as shown in Figure 2, let the center point (111) of a 3-dimensional building model (11) and the center point (121) of another 3-dimensional building model (12), when the two 3-dimensional building models (11, 12) After moving to the predetermined combination position, as shown in Figure 3, take the vertical plane formed by the perpendicular line (L) of the two center points (111, 121) and the normal line through the perpendicular line (L) as the tangent plane (20), and use the cut plane (20) to cut the two 3-dimensional building models (11, 12). After the cutting is performed in the present invention, as shown in Figure 4, the unnecessary parts (ie, Figure 3) (Shown by the dashed line) are deleted or hidden to reassemble into a new 3-dimensional building model (13).

The method disclosed in the present invention for assembling a plurality of three-dimensional building models, wherein each of the three-dimensional building models is composed of a plurality of three-dimensional components; the method disclosed in the present invention further establishes each of the three-dimensional building models The correlation between the three-dimensional components; the above-mentioned correlation between the three-dimensional components refers to the correlation between the relative coordinates of at least two designated three-dimensional components (for example, the distance between two three-dimensional components); Or the relevance refers to the relevance between each of the three-dimensional components and the set reference edge or reference surface or reference point; or the three-dimensional component conforms to a functional relevance, and the present invention is not self-limiting. For example, in Figure 3, which constitutes the 3D parts of the 3D building model (11, 12), the correlation between the column (31) and the base (32) means that the center of each column (31) is located The intersection point of two adjacent sides offset (d) by a distance. Therefore, when the present invention completes the cutting, the new 3-dimensional building model (13) can be inserted into the column ( 31a), and delete the column (31b, as shown in Figure 4) that does not meet the association.

As shown in FIG. 6, the method for combining plural 3-dimensional building models disclosed in the present invention makes one of the loaded 3-dimensional building models defined as the main building model, and the remaining 3-dimensional building models are defined as sub-buildings Object model, so that the main building model is combined with a sub-building model and then redefined as the main building model, so as to be combined with another sub-building model.

The method for assembling a complex 3-dimensional building model disclosed in the present invention, wherein the cut surface used to cut the 3-dimensional building model can be a plane or a curved surface, and the above-mentioned curved surface may be a curved surface formed by a free curve or a multi-section plane. The formed multi-fold surface. The cut surface is made to match the surface of the main building model for combining the joint surface of the sub-building model, so that the sub-building model recombined with the main building model can match the surface of the main building model.

The method for assembling plural 3-dimensional building models disclosed in the present invention further includes: judging the direction in which the sub-building model joins the main building model to determine the surface of the main building model for receiving the sub-building model; And define the surface as the cut surface to cut the sub-building model.

The method for combining plural 3-dimensional building models disclosed in the present invention can be implemented by marking two diagonal lines in the top view direction of the main building model, so that the two diagonal lines can divide the main building model into four Block, and make the surface surfaces of each block form a tangent plane to cut the sub-building model combined on the block, so that the sub-building model recombined with the main building model can match the main building model In the implementation of the present invention, when the sub-building model approaches the main building model and when it comes into contact with one of the diagonal projections, the present invention can determine that the sub-building model will be combined in On the block of the main building model, select the section to cut the sub-building model; as shown in Figure 7, the two diagonal lines demarcated in the top view direction of the main building model (11') (L1, L2), divide the main building model (11') into 4 blocks (A, B, C, D), and set the surface of each block (A, B, C, D) to be A tangent plane is formed. When a sub-building model (12') approaches one of the blocks (A) of the main building model (11') and is in contact with one of the diagonal lines (L1), the present invention is The sub-building model (12') is located on the right side of the diagonal line (L1) and will be combined with the block (A) of the main building model (11'). Therefore, the present invention can automatically determine that it is in the main building model (11). The surface surface of the block (A) of') is established as its tangent plane (20), which is used to cut the sub-building model (12') so that the sub-building model (12') can be joined to the main building in a consistent manner Object model (11').

As shown in FIG. 8, the method for combining plural 3-dimensional building models disclosed in the present invention, wherein the cut surface (20) used to cut the 3-dimensional building model refers to the highest point along the main building model (11') (a) The curved surface on either side of the main building model (11') from (a) to the lowest point (b), the present invention is not self-limiting.

The method of assembling plural 3-dimensional building models disclosed in the present invention is to form a tangent plane with a curved surface that matches the surface of the main building model, so the sub-building model can be joined to any position of the main building model at any angle, The occurrence of no broken surface may greatly reduce the occurrence of broken surface.

The method for combining complex 3D building models disclosed in the present invention, wherein the cut surface is an imaginary surface formed by connecting the two ends of the curved surface in the cut 3D building model, and the maximum distance between each point in the curved surface and the imaginary surface is calculated , Offset according to the maximum distance, so that the tangent plane passes through the lowest point of the curved surface. For example, as shown in Figure 9, assuming that the 3-dimensional building model is a curved surface (S), the present invention uses the imaginary surface (F) formed by connecting the two ends of the curved surface (S) to calculate the points in the curved surface (S) The maximum distance (d1) from the imaginary surface (F), and the imaginary surface (F) is translated according to the maximum distance (d1) as its tangent surface (20), so that the tangent surface (20) passes through the lowest point of the curved surface (S) ( P).

Through the method of combining multiple 3D building models disclosed in the present invention, most 3D building models can be combined according to different angles and positions, and unnecessary parts can be deleted or hidden to form the 3D buildings required by the designer. The appearance of the object model can greatly reduce the designer's drawing time and cost, and show the novelty and advancement of the present invention.

The method disclosed in the present invention can be modified and applied without violating the spirit and scope of the present invention, and is not limited to the above-mentioned embodiments.

(11)(12): 3D building model (11’): Sub-building model (12’): Sub-building model (13): New 3D building model (111)(121): Center point (20): section (31)(31a)(31b): Column (32): Pedestal (A)(B)(C)(D): block (d): distance (d1): Maximum distance (L): Mid-perpendicular (L1)(L2): diagonal (F): imaginary face (S): Surface (P): lowest point

Figure 1: The flow chart of the present invention. Figure 2: A schematic diagram of the present invention before combining two 3D building models. Figure 3: A schematic diagram of moving each of the three-dimensional building models in Figure 2 to a predetermined combination position and creating a cut plane. Figure 4: A schematic diagram of the combined two and three-dimensional building model from Figure 3. Figure 5: Figure 4 is a schematic diagram of adding necessary 3D parts according to the set 3D part relevance. Figure 6: is a flow chart of the method of the present invention for assembling 3D building models. Figure 7 is a schematic diagram of the present invention dividing the main building model into multiple blocks. Figure 8: It shows the side view of Figure 7 after completing the combined main and sub-building models. Figure 9; is a schematic diagram showing the method of establishing the cutting surface of the present invention in cutting arc-shaped curved surfaces.

Claims (10)

A method of combining complex 3D building models, including: (a) Create or retrieve at least two 3D building models into a database or catalog, and define the names of each 3D building model and each component; (b) Open a work area, enter the name of the 3D building model specified to be combined, and load the corresponding 3D building model in the database or catalog, and then read each part through the name of each part of the 3D building relevant information; (c) Adjust the combined position and form of the loaded 3D building model; (d) The cross-section of the combination of two and three-dimensional building models; (e) Cut the selected 3-dimensional building model with the cut surface; (f) For the cut 3D building model, delete or hide unnecessary parts; and (g) Complete the combined 3D building model. The method for combining plural 3-dimensional building models as described in claim 1, wherein the tangent plane refers to a plane formed by the perpendicular line between the center points of the two 3-dimensional building models to be combined and the normal line perpendicular to the median line. According to the method of combining plural 3-dimensional building models as described in claim 1, each 3-dimensional building model is composed of a plurality of 3-dimensional components, and further establishing the 3-dimensional components constituting the 3-dimensional building model Relevance. According to the method of combining plural 3-dimensional building models as described in claim 3, the correlation between the three-dimensional components refers to the correlation between the relative coordinates of at least two three-dimensional components specified; or each of the three-dimensional components The relevance between the part and the set reference edge or reference surface or reference point; or make the 3D part conform to a function. The method of combining plural 3-dimensional building models as described in claim 3 or 4 is such that after the newly combined 3-dimensional building model, the 3-dimensional components that do not meet the relevance are deleted or hidden at the same time. The method of combining plural 3-dimensional building models as described in claim 1, so that one of the loaded 3-dimensional building models is defined as the main building model, and the remaining 3-dimensional building models are defined as sub-building models, The main building model is combined with a sub-building model and then redefined as the main building model to be combined with another sub-building model. The method for assembling plural 3-dimensional building models as described in claim 6, wherein the cut surface used to cut the 3-dimensional building model can be a plane or a curved surface, and the above-mentioned curved surface may be a curved surface formed by a free-form curve or a multi-segment A multi-fold curved surface formed by a plane, and the tangent surface is matched with the surface of the main building model for combining the joint surface of the sub-building model. The method for combining plural 3-dimensional building models as described in claim 6, further comprising judging the direction in which the sub-building model joins the main building model to determine the surface of the sub-building model for the main building model , And define the surface as the cut surface to cut the sub-building model. For example, claim 6 reveals a method of combining plural 3-dimensional building models, the two diagonal lines calibrated in the overhead direction of the main building model, so that the two diagonal lines divide the main building model into 4 blocks, and Let the surface curved surfaces of each block form a tangent plane to cut the sub-building model combined on the block, so that the sub-building model recombined with the main building model can match the surface of the main building model. For example, claim 6 discloses a method of combining plural 3D building models, where the cut plane used to cut the 3D building model refers to the surface of any side of the main building model that coincides with the highest point to the lowest point of the main building model Surface.

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