CN119399338A - A method for fast rendering of three-dimensional graphics - Google Patents

Abstract

The invention discloses a processing method for rapidly rendering three-dimensional graphics, which comprises the following steps of S1, scanning file data and carrying out format normalization processing, then converting vertex information expressed in double precision and single precision into integers by combining coordinate units, and inputting the integers into a file again for expression, S2, carrying out local centralization processing on coordinate values expressed in the file, correcting the coordinate values relative to a geographic center point to be the coordinate relative to the center point of a file plate, S3, judging whether a surface of a grid unit in a certain direction is the same as a node of a unit associated with the corresponding surface or not.

Description

Processing method for rapidly rendering three-dimensional graph

Technical Field

The invention relates to the technical field of file rendering, in particular to a processing method for rapidly rendering three-dimensional graphics.

Background

At present, various domestic research institutions and scientific research institutions use data expressing oil reservoirs in ECLIPSE format in a large quantity. In the process of three-dimensional rendering of data, as the files are relatively large and the file types are relatively many, the rendering speed is low, and the user experience is affected. How quickly the content of a file is presented on a machine becomes a pain point for users using the file format. The current oil reservoir data file is stored in a space format by using a corner grid mode, and is characterized in that each grid unit is expressed by using eight vertexes, and a computer sequentially renders according to the positions of the grid units to perform geological presentation.

In the process of using three-dimensional visual simulation or digital twin, the loading process is slow due to the large data volume of the oil reservoir file (usually several G or tens of G bytes), the waiting time of a user is long, and the experience effect is poor.

Disclosure of Invention

Therefore, the present invention provides a processing method for fast rendering three-dimensional graphics, so as to solve the above-mentioned problems in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

A processing method for three-dimensional graphic quick rendering comprises the following steps:

S1, scanning file data and carrying out format normalization treatment, then converting vertex information expressed in double precision and single precision into integers by combining coordinate units, and inputting the integers into a file again for expression;

s2, carrying out local centralization treatment on the coordinate values expressed in the file, and correcting the coordinate relative to the geographical central point from the previous coordinate relative to the central point of the file plate;

S3, judging whether the surface of one grid unit in a certain direction is the same as the node of the unit associated with the corresponding surface;

and S4, if the two units are the same, indicating that the surface is blocked by the corresponding surface, marking the surface as invisible, ignoring rendering processing of the units when rendering is performed, otherwise marking the surface as visible, and performing rendering processing.

Further, in S2, the method includes the following steps:

p1, scanning coordinate information of all units described by an oil reservoir file, and calculating a central coordinate point of each unit cell according to a cuboid space containing the units;

P2, calculating the positions of the maximum and minimum center points for the calculated center coordinate points to be relatively large and small;

p3, carrying out average calculation according to the coordinates of the maximum and minimum center line points, and taking the obtained result as the center coordinate of the space expressed by the file;

and P4, recalibrating the coordinate information of the oil reservoir file, calculating the position of the reference center node and carrying out integer processing.

Further, in S3, the method includes the following steps:

Q1, circularly judging whether adjacent cells are contacted in six directions of each grid cell;

Q2, if adjacent units exist in a certain direction, indicating that the direction is blocked by the adjacent units;

And Q3, scanning and marking all units as visible units, and not performing display processing on invisible units.

And Q4, re-recording the visible unit coordinate information to the file after the marking is finished.

Further, in Q2, when there are adjacent cells in all six directions of one cell, it is indicated that the cell is not visible and is not displayed.

Further, the method also comprises the following steps:

S5, carrying out layered expression of the unit content, and rendering according to a layer structure;

s6, each expression unit is divided in layers, and the rendering priority of each layer is set;

and S7, the attribute content of each unit also marks the level of the attribute content.

Further, in S6, the method includes the following steps:

n1, carrying out triangularization expression processing on data expressed by using a corner grid;

n2, numbering and analyzing the triangulated plane nodes to judge whether repeated drawing nodes exist or not;

N3, eliminating repeated nodes, and recording the nodes to be rendered into a memory;

and N4, traversing all nodes to be rendered, and displaying the nodes to a screen by combining the displayed priority after traversing.

The invention has the following advantages:

The file can be compressed greatly, and the processing speed is improved rapidly due to the data volume and format processing;

The converted file can be rapidly loaded by a third party engine, the content of the oil reservoir attribute is smoothly displayed, and the user data loading is remarkably improved;

by adopting the technology used by the invention, the file loading speed of the computer can be increased, the occupation of memory resources can be reduced, and the file content can be displayed more quickly.

Drawings

Fig. 1 is an overall flowchart of a processing method for fast rendering of three-dimensional graphics provided by the invention.

Fig. 2 is a coordinate processing flow chart of a processing method for fast rendering of three-dimensional graphics.

Fig. 3 is a node rendering traversal flowchart of a processing method for fast rendering of three-dimensional graphics provided by the invention.

Detailed Description

Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

As shown in fig. 1 to 3, a processing method for fast rendering of three-dimensional graphics in an embodiment of a first aspect of the present invention includes the following steps:

S1, scanning file data and carrying out format normalization treatment, then converting vertex information expressed in double precision and single precision into integers by combining coordinate units, and inputting the integers into a file again for expression;

s2, carrying out local centralization treatment on the coordinate values expressed in the file, and correcting the coordinate relative to the geographical central point from the previous coordinate relative to the central point of the file plate;

S3, judging whether the surface of one grid unit in a certain direction is the same as the node of the unit associated with the corresponding surface;

S4, if the two units are the same, indicating that the surface is blocked by the corresponding surface, marking the surface as invisible, ignoring rendering processing of the units when rendering is performed, otherwise marking the surface as visible, and performing rendering processing;

In the above embodiment, the data range of each grid cell is reduced, and the amount of computation is reduced. In addition, the content recorded by the reservoir simulation software is usually expressed by combining a coordinate system. In practical application, the unit is usually calculated by taking meters as position, and the measurement data of the oil reservoir file is usually expressed in the form of floating point decimal. The position behind the decimal point in the three-dimensional geological display has not much practical significance with respect to the data as a whole. By the integer (mainly, the number of coordinates in the longitude and latitude direction) processing, the efficiency can be improved no matter the storage and the operation are carried out later.

Example 2

As shown in fig. 1 to 3, a processing method for fast rendering of three-dimensional graphics includes the whole content of embodiment 1, and in addition, in S2, the method includes the following steps:

p1, scanning coordinate information of all units described by an oil reservoir file, and calculating a central coordinate point of each unit cell according to a cuboid space containing the units;

P2, calculating the positions of the maximum and minimum center points for the calculated center coordinate points to be relatively large and small;

p3, carrying out average calculation according to the coordinates of the maximum and minimum center line points, and taking the obtained result as the center coordinate of the space expressed by the file;

P4, recalibrating the coordinate information of the oil reservoir file, calculating and carrying out integer processing by referring to the position of the central node;

The technical effect achieved by the embodiment is that the data expressed by the oil reservoir file is usually underground simulation data, and when the data are presented to a picture of a computer, the topmost layer and the layer facing the direction of a user are seen first. Therefore, in the rendering process, the invention adopts a rendering strategy to firstly render the most concerned part of the user, and other detail parts are sequenced and rendered in parallel according to the weight value of the analysis structure layer.

Files are compressed substantially, and the amount of data and format processing results in a rapid increase in processing speed.

Example 3

As shown in fig. 1 to 3, a processing method for fast rendering of three-dimensional graphics includes the whole content of embodiment 1, and in addition, in S3, the method includes the following steps:

Q1, circularly judging whether adjacent cells are contacted in six directions of each grid cell;

Q2, if adjacent units exist in a certain direction, indicating that the direction is blocked by the adjacent units;

q3, scanning all units and marking whether the units are visible units, and not performing display processing on invisible units;

q4, re-recording the visible unit coordinate information to the file after the marking is finished;

In the above embodiment, the overall information of the entire file includes the total number of units, the total number of layers, the layer list information, the unit list structure of each layer, and the total number of units of each layer and the unit information of the layer.

Example 4

As shown in fig. 1 to 3, a processing method for fast rendering of three-dimensional graphics includes the whole content of embodiment 3, and in addition, in Q2, when there are adjacent cells in all six directions of a cell, it is indicated that the cell is not visible and is not displayed.

Example 5

As shown in fig. 1 to 3, a processing method for fast rendering of three-dimensional graphics includes the whole content of embodiment 1, and in addition, S5, hierarchical expression of unit content, rendering according to a layer structure;

s6, each expression unit is divided in layers, and the rendering priority of each layer is set;

S7, the attribute content of each unit also marks the level of the attribute content;

In the above embodiment, it should be noted that, by adopting the technology used in the present invention, the file loading speed of the computer can be increased, the occupation of memory resources can be reduced, and the file content can be displayed more quickly.

Example 6

As shown in fig. 1 to 3, a processing method for fast rendering of three-dimensional graphics includes the whole content of embodiment 5, and in addition, in S6, the method includes the following steps:

n1, carrying out triangularization expression processing on data expressed by using a corner grid;

n2, numbering and analyzing the triangulated plane nodes to judge whether repeated drawing nodes exist or not;

N3, eliminating repeated nodes, and recording the nodes to be rendered into a memory;

n4, traversing all nodes to be rendered, and displaying the nodes to a screen by combining the displayed priority after traversing;

In the above embodiment, it should be noted that, after the technology adopted by the invention is used, the machine rendering speed is greatly accelerated, the change of the data content of the oil reservoir can be fed back in time, and the method has positive popularization significance in the aspect of digital twin application;

the technical effect achieved by the embodiment is that after the exported custom format file is loaded, the SDK interface is rendered and called to the screen display by using the technology, and the method is mainly applied to the digital twin project related to the oil field.

Claims (6)

1. A processing method for rapidly rendering three-dimensional graphics is characterized by comprising the following steps:

S1, scanning file data and carrying out format normalization treatment, then converting vertex information expressed in double precision and single precision into integers by combining coordinate units, and inputting the integers into a file again for expression;

s2, carrying out local centralization treatment on the coordinate values expressed in the file, and correcting the coordinate relative to the geographical central point from the previous coordinate relative to the central point of the file plate;

S3, judging whether the surface of one grid unit in a certain direction is the same as the node of the unit associated with the corresponding surface;

and S4, if the two units are the same, indicating that the surface is blocked by the corresponding surface, marking the surface as invisible, ignoring rendering processing of the units when rendering is performed, otherwise marking the surface as visible, and performing rendering processing.

2. The method for processing three-dimensional graphics according to claim 1, wherein the step S2 comprises the following steps:

p1, scanning coordinate information of all units described by an oil reservoir file, and calculating a central coordinate point of each unit cell according to a cuboid space containing the units;

P2, calculating the positions of the maximum and minimum center points for the calculated center coordinate points to be relatively large and small;

p3, carrying out average calculation according to the coordinates of the maximum and minimum center line points, and taking the obtained result as the center coordinate of the space expressed by the file;

and P4, recalibrating the coordinate information of the oil reservoir file, calculating the position of the reference center node and carrying out integer processing.

3. The method for processing three-dimensional graphics according to claim 1, wherein the step S3 comprises the following steps:

Q1, circularly judging whether adjacent cells are contacted in six directions of each grid cell;

Q2, if adjacent units exist in a certain direction, indicating that the direction is blocked by the adjacent units;

q3, scanning all units and marking whether the units are visible units, and not performing display processing on invisible units;

and Q4, re-recording the visible unit coordinate information to the file after the marking is finished.

4. A method for fast rendering of three-dimensional graphics according to claim 3, wherein in Q2, when there are adjacent cells in all six directions of a cell, the cell is not visible and is not displayed.

5. The method for processing the three-dimensional graphic rapid rendering according to claim 1, further comprising the steps of:

S5, carrying out layered expression of the unit content, and rendering according to a layer structure;

s6, each expression unit is divided in layers, and the rendering priority of each layer is set;

and S7, the attribute content of each unit also marks the level of the attribute content.

6. The method for processing three-dimensional graphics according to claim 5, wherein the step S6 comprises the steps of:

n1, carrying out triangularization expression processing on data expressed by using a corner grid;

n2, numbering and analyzing the triangulated plane nodes to judge whether repeated drawing nodes exist or not;

N3, eliminating repeated nodes, and recording the nodes to be rendered into a memory;

and N4, traversing all nodes to be rendered, and displaying the nodes to a screen by combining the displayed priority after traversing.