CN114663565A

CN114663565A - Rendering display method and device, computer equipment and storage medium

Info

Publication number: CN114663565A
Application number: CN202210335189.4A
Authority: CN
Inventors: 黄肖丹
Original assignee: Beijing Zitiao Network Technology Co Ltd
Current assignee: Beijing Zitiao Network Technology Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-06-24
Also published as: WO2023185660A1

Abstract

The disclosure provides a rendering display method, a rendering display device, a computer device and a storage medium, wherein the method comprises the following steps: acquiring a target model of a rock terrain to be rendered, and determining a skin area of the rock terrain to be rendered for the target model based on gradient information corresponding to cloud points of each point in the target model; performing skin plot division on the skin area based on the earth surface characteristics corresponding to the skin area to obtain at least one skin plot of the rock terrain to be rendered; for any skin plot, matching a corresponding target calibration skin plot for the skin plot from preset calibration skin plots, and determining corresponding target skin patch data for the skin plot based on skin patch data corresponding to the target calibration skin plot; and rendering and displaying the rock terrain of the target model based on the determined target skin patch data respectively corresponding to each skin parcel.

Description

Rendering display method and device, computer equipment and storage medium

Technical Field

The present disclosure relates to the field of computer technologies, and in particular, to a rendering display method and apparatus, a computer device, and a storage medium.

Background

Under application scenes such as games, the construction requirements of scenes exist, for example, the construction requirements of game scenes exist, and many mountains with rock landforms are distributed in the game scenes. In some possible cases, rock terrain can be rendered for the mountains in a manual drawing mode, so that the reality of the mountains in the displaying process is improved. However, since mountains are widely distributed in scenes, if a manual drawing mode is adopted, the workload is large, and the efficiency is low.

Disclosure of Invention

The embodiment of the disclosure at least provides a rendering display method, a rendering display device, computer equipment and a storage medium.

In a first aspect, an embodiment of the present disclosure provides a rendering display method, including: acquiring a target model of a rock terrain to be rendered, and determining a skin area of the rock terrain to be rendered for the target model based on gradient information corresponding to cloud points of each point in the target model; performing skin plot division on the skin area based on the earth surface features corresponding to the skin area to obtain at least one skin plot of the rock terrain to be rendered; for any skin plot, matching a corresponding target calibration skin plot for the skin plot from preset calibration skin plots, and determining corresponding target skin patch data for the skin plot based on skin patch data corresponding to the target calibration skin plot; and rendering and displaying the rock terrain of the target model based on the determined target skin patch data respectively corresponding to each skin parcel.

In an optional embodiment, the determining, for the target model, a skin region of the rock terrain to be rendered based on gradient information corresponding to cloud points of each point in the target model includes: screening target cloud points of which the corresponding gradient information is in the gradient range from the cloud points of each point on the basis of the gradient information corresponding to the cloud points of each point and a preset gradient range determined for the rock terrain; and determining the skin area based on the position information of the target point cloud point in the target model.

In an optional implementation manner, before performing skin parcel division on the skin region based on the surface features corresponding to the skin region to obtain at least one skin parcel of the rock terrain to be rendered, the method further includes: pre-cutting the skin area to obtain each sub-skin area of the skin area; the skin plot partitioning is carried out on the skin region based on the earth surface features corresponding to the skin region, so as to obtain at least one skin plot of the rock terrain to be rendered, and the method comprises the following steps: determining the earth surface characteristics corresponding to the sub-skin areas respectively based on the earth surface characteristics corresponding to the skin areas; and respectively carrying out covering plot division on each sub-covering region based on the earth surface characteristics respectively corresponding to each sub-covering region to obtain at least one covering plot.

In an alternative embodiment, the pre-cutting the skin region to obtain each sub-skin region of the skin region includes: and pre-cutting the skin area based on a plurality of preset plane directions to obtain sub-skin areas corresponding to the skin area in the plurality of plane directions.

In an optional embodiment, the method further comprises: and in response to the fact that the length of the sub-skin area in any plane direction in the preset direction exceeds a preset length threshold value, performing secondary cutting processing on the sub-skin area in the preset direction, and updating each sub-skin area corresponding to the skin area.

In an alternative embodiment, the pre-cutting the skin region to obtain each sub-skin region of the skin region includes: in response to the inclusion of a hole-shaped skin region in the skin region, determining a corresponding cut line for the hole-shaped skin region; the cutting line is used for splitting the hollow skin area into a plurality of skin areas which are not communicated; and pre-cutting the hole-shaped skin area based on the cutting line determined for the hole-shaped skin area to obtain each sub-skin area of the hole-shaped skin area.

In an optional implementation manner, the dividing the skin parcel of each sub-skin region based on the surface features corresponding to each sub-skin region respectively to obtain the at least one skin parcel comprises: for any sub-skin area, determining a land parcel division auxiliary line for the sub-skin area based on the earth surface characteristics corresponding to the sub-skin area; and carrying out skin plot division on the sub-skin region based on the plot division auxiliary line determined for the sub-skin region to obtain at least one skin plot corresponding to the sub-skin region.

In an optional embodiment, the skin region is divided into at least one skin region based on the region division auxiliary line determined for the sub-skin region, so as to obtain at least one skin region corresponding to the sub-skin region, including: determining a plurality of division nodes on the plot division auxiliary line; and aiming at any division node, carrying out skin plot division on the sub-skin region based on the preset division size of the skin plot and the position of the division node on the plot division auxiliary line to obtain at least one skin plot associated with the division node in the sub-skin region.

In a second aspect, an embodiment of the present disclosure further provides a rendering display apparatus, including: the first processing module is used for acquiring a target model of a rock terrain to be rendered, and determining a skin area of the rock terrain to be rendered for the target model based on gradient information corresponding to cloud points of each point in the target model; the dividing module is used for dividing the skin region into skin plots based on the surface features corresponding to the skin region to obtain at least one skin plot of the rock terrain to be rendered; the second processing module is used for matching a corresponding target calibration skin plot for any skin plot from preset calibration skin plots, and determining corresponding target skin patch data for the skin plot based on skin patch data corresponding to the target calibration skin plot; and the rendering display module is used for rendering and displaying the rock terrain of the target model based on the determined target skin patch data respectively corresponding to each skin parcel.

In an optional embodiment, the first processing module, when determining, for the target model, a skin region of the rock terrain to be rendered based on gradient information corresponding to cloud points of each point in the target model, is configured to: screening target cloud points of which the corresponding gradient information is in the gradient range from the cloud points of each point on the basis of the gradient information corresponding to the cloud points of each point and a preset gradient range determined for the rock terrain; and determining the skin area based on the position information of the target point cloud point in the target model.

In an optional embodiment, before performing skin parcel division on the skin region based on the surface feature corresponding to the skin region to obtain at least one skin parcel of the rock terrain to be rendered, the division module is further configured to: pre-cutting the skin area to obtain each sub-skin area of the skin area; the dividing module is used for dividing the skin plot of the skin region based on the earth surface characteristics corresponding to the skin region to obtain at least one skin plot of the rock terrain to be rendered: determining the earth surface characteristics corresponding to the sub-skin areas respectively based on the earth surface characteristics corresponding to the skin areas; and respectively carrying out covering plot division on each sub-covering region based on the earth surface characteristics respectively corresponding to each sub-covering region to obtain at least one covering plot.

In an alternative embodiment, the dividing module, when performing the pre-cutting process on the skin region to obtain each sub-skin region of the skin region, is configured to: and pre-cutting the skin area based on a plurality of preset plane directions to obtain sub-skin areas corresponding to the skin area in the plurality of plane directions.

In an optional implementation, the dividing module is further configured to: and in response to the fact that the length of the sub-skin area in any plane direction in the preset direction exceeds a preset length threshold value, performing secondary cutting processing on the sub-skin area in the preset direction, and updating each sub-skin area corresponding to the skin area.

In an alternative embodiment, the dividing module performs pre-cutting processing on the skin region to obtain each sub-skin region of the skin region, and is configured to: in response to the inclusion of a hole-shaped skin region in the skin region, determining a corresponding cut line for the hole-shaped skin region; the cutting line is used for splitting the hollow skin area into a plurality of skin areas which are not communicated;

and pre-cutting the hole-shaped skin area based on the cutting line determined for the hole-shaped skin area to obtain each sub-skin area of the hole-shaped skin area.

In an optional implementation manner, the dividing module is configured to, when performing skin parcel division on each sub-skin region based on the earth surface features corresponding to each sub-skin region, respectively, to obtain the at least one skin parcel,: for any sub-skin area, determining a land parcel division auxiliary line for the sub-skin area based on the earth surface characteristics corresponding to the sub-skin area; and carrying out skin plot division on the sub-skin region based on the plot division auxiliary line determined for the sub-skin region to obtain at least one skin plot corresponding to the sub-skin region.

In an optional implementation manner, when the dividing module performs skin parcel division on the sub-skin region based on the parcel division auxiliary line determined for the sub-skin region to obtain at least one skin parcel corresponding to the sub-skin region, the dividing module is configured to: determining a plurality of division nodes on the plot division auxiliary line; and aiming at any division node, carrying out skin plot division on the sub-skin region based on the preset division size of the skin plot and the position of the division node on the plot division auxiliary line to obtain at least one skin plot associated with the division node in the sub-skin region.

In a third aspect, this disclosure also provides a computer device, a processor, and a memory, where the memory stores machine-readable instructions executable by the processor, and the processor is configured to execute the machine-readable instructions stored in the memory, and when the machine-readable instructions are executed by the processor, the machine-readable instructions are executed by the processor to perform the steps in the first aspect or any one of the possible implementations of the first aspect.

In a fourth aspect, this disclosure also provides a computer-readable storage medium having a computer program stored thereon, where the computer program is executed to perform the steps in the first aspect or any one of the possible implementation manners of the first aspect.

For the description of the effects of the rendering display apparatus, the computer device, and the computer-readable storage medium, reference is made to the description of the rendering display method, which is not repeated herein.

According to the rendering display method, the rendering display device, the computer equipment and the storage medium provided by the embodiment of the disclosure, after the target model of the rock terrain to be rendered is obtained, the skin area of the rock terrain to be rendered can be determined for the target model according to the slope information corresponding to the cloud points of each point. In order to determine different skin patch data which are selected for use when the rock terrain is rendered at different positions for the skin region more quickly, the skin region can be further cut into skin plots according to corresponding surface features, and corresponding skin patch data are determined for each skin plot in the skin region by presetting different calibration skin plots and corresponding skin patch data when the rock terrain is rendered, so that the rock terrain of the target model is rendered and displayed. In this way, the skin plots are divided through the surface characteristics of the skin region, so that the skin plots reflect the differences of mountains, the corresponding skin patch data can be determined more easily through matching with the calibrated skin plots, and the terrain rendering efficiency is higher.

In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly described below, and the drawings herein incorporated in and forming a part of the specification illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the technical solutions of the present disclosure. It is appreciated that the following drawings depict only certain embodiments of the disclosure and are therefore not to be considered limiting of its scope, for those skilled in the art will be able to derive additional related drawings therefrom without the benefit of the inventive faculty.

Fig. 1 illustrates a flowchart of a rendering display method provided by an embodiment of the present disclosure;

FIG. 2 illustrates a schematic diagram of a target model provided by an embodiment of the present disclosure;

FIG. 3 is a schematic diagram illustrating a parcel division auxiliary line provided by an embodiment of the present disclosure;

FIG. 4 illustrates a schematic view of a plurality of skin plots provided by embodiments of the present disclosure;

FIG. 5 illustrates a schematic diagram of a specific determination of a skin parcel provided by an embodiment of the present disclosure;

FIG. 6 illustrates a schematic diagram of another specific determination of skin patches provided by embodiments of the present disclosure;

FIG. 7 illustrates a schematic diagram of a target model rendering rock terrain provided by an embodiment of the present disclosure;

FIG. 8 illustrates a schematic diagram of a rendering display apparatus provided by an embodiment of the present disclosure;

fig. 9 shows a schematic diagram of a computer device provided by an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. The components of embodiments of the present disclosure, as generally described and illustrated herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making creative efforts, shall fall within the protection scope of the disclosure.

Research shows that when large scenes such as game scenes are constructed, the requirement for rendering rock terrains in mountains in a large range may appear in order to improve reality. Because the trends, slopes, surface features and the like of the mountains at different positions in the scene are different, the same rock terrain rendering cannot be directly performed on the mountains when the rock terrain is rendered, and different rock terrains are purposefully rendered according to the differences of the mountains. Therefore, the rock terrain rendering of the mountains is usually performed by adopting a manual drawing mode, but the manual drawing mode has large workload and low efficiency due to the fact that the mountains are widely distributed in the scenes.

Based on the research, the present disclosure provides a rendering display method, after obtaining a target model of a rock terrain to be rendered, a skin area of the rock terrain to be rendered may be determined for the target model according to gradient information corresponding to cloud points of each point. In order to determine different skin patch data which are selected for use when the rock terrain is rendered at different positions for the skin region more quickly, the skin region can be further cut into skin plots according to corresponding surface features, and corresponding skin patch data are determined for each skin plot in the skin region by presetting different calibration skin plots and corresponding skin patch data when the rock terrain is rendered, so that the rock terrain of the target model is rendered and displayed. In this way, the skin plots are divided through the surface characteristics of the skin region, so that the skin plots reflect the differences of mountains, the corresponding skin patch data can be determined more easily through matching with the calibrated skin plots, and the terrain rendering efficiency is higher.

The above-mentioned drawbacks are the results of the inventor after practical and careful study, and therefore, the discovery process of the above-mentioned problems and the solutions proposed by the present disclosure to the above-mentioned problems should be the contribution of the inventor in the process of the present disclosure.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

To facilitate understanding of the present embodiment, first, a rendering and displaying method disclosed in the embodiments of the present disclosure is described in detail, where an execution subject of the rendering and displaying method provided in the embodiments of the present disclosure is generally a computer device with certain computing capability, and the computer device includes, for example: a terminal device, which may be a User Equipment (UE), a mobile device, a User terminal, a cellular phone, a cordless phone, a Personal Digital Assistant (PDA), a handheld device, a computing device, a vehicle mounted device, a wearable device, or a server or other processing device. In some possible implementations, the rendering display method may be implemented by a processor calling computer readable instructions stored in a memory.

The rendering display method provided by the embodiment of the disclosure can be applied to scenes such as the game field and animation movie production, for example, in the game field, the production of the game scene, or in the animation movie production scene, the production of the animation scene. In a game scene or an animation scene, various scene-creating objects are usually designed, such as mountains, rivers, deserts and the like. For landscaping by mountains, in order to improve the reality of scenes by mountains, paving the scenes in a larger range according to the characteristics of large range and continuity of mountains in real scenes. Here, the paved mountain landscaping is also the target model that can be obtained. After the target model is obtained, by using the rendering display method provided by the embodiment of the disclosure, skin patch data corresponding to a skin parcel with a smaller granularity can be determined for the target model, so that the rock terrain is rendered and displayed for a mountain by using the skin patch data, and the authenticity is improved.

The following describes a rendering display method provided by the embodiments of the present disclosure.

Referring to fig. 1, a flowchart of a rendering and displaying method provided in the embodiment of the present disclosure is shown, where the method includes steps S101 to S104, where:

s101: acquiring a target model of a rock terrain to be rendered, and determining a skin area of the rock terrain to be rendered for the target model based on gradient information corresponding to cloud points of each point in the target model;

s102: performing skin plot division on the skin area based on the earth surface features corresponding to the skin area to obtain at least one skin plot of the rock terrain to be rendered;

s103: for any skin plot, matching a corresponding target calibration skin plot for the skin plot from preset calibration skin plots, and determining corresponding target skin patch data for the skin plot based on skin patch data corresponding to the target calibration skin plot;

s104: and rendering and displaying the rock terrain of the target model based on the determined target skin patch data respectively corresponding to each skin parcel.

The following describes the details of S101 to S104.

In the above S101, the target model will be described first. Here, the object model specifically includes a model of a rock terrain to be rendered, such as a mountain paved on a game scene or a cartoon scene. In a possible case, a mountain of all or selected partial areas laid in the scene may be used as the determined target model. The target model may be specifically composed of point cloud points, and different positions are set for different point cloud points, so that the target model can display features similar to a mountain in a real scene, for example, a mountain fluctuation form is composed of point clouds with varying heights.

In a real scene, mountains contain steep areas covered by rocks and flat areas covered by vegetation and the like, so that when the rock terrain is rendered for the target model, the skin areas of the rock terrain to be rendered are determined for the target model by using the slope information corresponding to cloud points of each point in the target model.

In one possible case, when determining the skin region of the rock terrain to be rendered for the target model, the following may be used in particular: screening target cloud points of which the corresponding gradient information is in the gradient range from the cloud points of each point on the basis of the gradient information corresponding to the cloud points of each point and a preset gradient range determined for the rock terrain; and determining the skin area based on the position information of the target point cloud point in the target model.

When determining the slope information corresponding to each cloud point, specifically, a reference point cloud point used for representing the bottom surface boundary of the target model is determined from each cloud point based on the position information corresponding to each cloud point; aiming at each point cloud point in the point cloud points, determining distance information respectively corresponding to the point cloud point and the reference point cloud points on the basis of position information corresponding to the point cloud point and position information respectively corresponding to the reference point cloud points; determining corresponding target reference point cloud points in the plurality of reference point cloud points based on the distance information respectively corresponding between the point cloud point and the plurality of reference point cloud points; and determining the slope information corresponding to the point cloud point based on the position information corresponding to the point cloud point and the reference position information corresponding to the target reference point cloud point.

After the position information corresponding to each cloud point is determined, the cloud points of the reference point positioned on the bottom surface boundary in the target model can be determined. Specifically, a plurality of cloud points, which are referred to herein as reference cloud points, are also included at the location of the bottom surface boundary. For any one of the cloud points, the distance information corresponding to the cloud point to the multiple cloud points can be determined according to the position information corresponding to the cloud point and the position information corresponding to the cloud points of the reference points, so that the cloud point of the reference point with the minimum corresponding distance information can be further selected as the target cloud point corresponding to the cloud point. Under the condition that the corresponding target reference point cloud point is determined, an included angle between a connecting line of the point cloud point and the target reference point cloud point and a bottom surface boundary can be determined according to the position information corresponding to the point cloud point and the position information corresponding to the target reference point cloud point, and the included angle is used as gradient information corresponding to the point cloud point.

Here, the manner of determining the gradient information for the point cloud point is only one specific example provided in the embodiment of the present disclosure, and other optional manners of determining the gradient information for the point cloud point are within the protection scope of the present disclosure. In particular implementations, the manner in which the grade information is determined is not limited.

For the rock terrain to be rendered, it can be known from the distribution rule of rocks in a real scene that the rock terrain usually exists within a certain gradient range on a mountain. Therefore, a preset gradient range can be determined for the rock terrain, and then a target point cloud point of the corresponding gradient information in the gradient range is screened out from the cloud points of each point according to the gradient information of the cloud points of each point determined for the target model, so that the skin area of the mountain terrain to be rendered is determined for the target model by utilizing the position information of the target point cloud point in the target model.

Illustratively, referring to fig. 2, a schematic diagram of an object model provided in the embodiment of the present disclosure is shown. By screening the gradient range of cloud points of each point in the target model, the cloud points of the target point can be determined on the surface of the target model to form a dark skin area.

For the above S102, since the target models may be widely distributed, the area actually occupied by the determined skin region may be larger or may be more dispersed. Therefore, in order to more specifically render the rock terrain, before the skin region is divided into the skin plots, the skin region can be pre-cut to obtain each sub-skin region of the skin region, so that the occupied area of the skin region is reduced when the skin plots are divided.

In specific implementation, when the skin region is pre-cut, the skin region may be pre-cut based on a plurality of preset planar directions, so as to obtain sub-skin regions corresponding to the skin region in the plurality of planar directions.

For example, the preset plurality of plane directions may be determined according to a model coordinate system of the target model, for example, a plane direction formed by any two coordinate axes in the model coordinate system is taken as the preset plane direction. In this way, the plurality of sub-skin regions cut out also have features in a planar direction, for example corresponding to a planar direction in which the reaction topography is flat, or to a planar direction in which the reaction topography is steep.

In addition, when the skin region is determined, specifically, the point cloud points in the target model are screened and determined according to the gradient information, so that the problem that the occupied area is still too large for the sub-skin region divided in the plane direction corresponding to the steep reaction topography may occur. In this case, the sub-skin region may be subjected to secondary cutting processing, and each sub-skin region corresponding to the skin region may be updated.

In a specific implementation, for example, the following is used: and in response to the fact that the length of the sub-skin area in any plane direction in the preset direction exceeds a preset length threshold value, performing secondary cutting processing on the sub-skin area in the preset direction, and updating each sub-skin area corresponding to the skin area.

The preset length threshold may be determined according to actual conditions, for example, the maximum length when the sub-skin region is divided is determined according to a preset division size of the skin land block after the skin land block is cut. Or, the maximum occupied area of the sub-skin region when the sub-skin region is divided into skin blocks can be determined according to the actual calculation force of the computer equipment, so as to calculate the maximum length of the sub-skin region in the preset direction. Here, the manner of setting the preset length threshold may be determined according to practical situations, and is not limited herein.

In one possible case, a hollow skin region can also be contained in the skin region. Because the inner surface of the hollow skin area is annular, normal vectors corresponding to cloud points of all points in the hollow skin area have opposite direction changes, and whether a certain position in the skin area is the hollow skin area or not can be determined by utilizing the normal vectors of the cloud points of all points in the skin area. Because the cavernous skin region is the region of UNICOM, consequently directly carry out the cutting of covering land parcel to the cavernous skin region, can make the covering land parcel that acquires be concave polygon, and the matching of this kind of concave polygon's covering land parcel difficult going on with mark covering land parcel, consequently can cut the cavernous skin region, the division of carrying out the covering land parcel is carried out in the sub-covering region after recycling the cutting to avoid obtaining concave polygon's covering land parcel.

In particular, in case it is determined that a hole-shaped skin region is included in the skin region, a corresponding cutting line may be determined for the hole-shaped skin region. The cutting line is used for splitting the hollow skin area into a plurality of skin areas which are not communicated. For example, the cutting line may include a straight line in the maximum depth direction of the cavity skin region, so that the cavity skin region is cut into two sub-skin regions through the pre-cutting process. Or, the cutting line may also include multiple lines, so as to further reduce the area occupied by each sub-skin region obtained after cutting, and facilitate the cutting of the subsequent skin land.

In a possible situation, a situation of a common vertex may occur in the obtained sub-skin region, and if a land partition auxiliary line used in cutting is determined by using the sub-skin region when the sub-skin region is cut, an error may occur in determining the land partition auxiliary line in the sub-skin region of the common vertex. In order to avoid such a problem, for the sub-skin regions sharing the vertex, the vertex position of the vertex shared by some sub-skin region may be adjusted, so that there is no shared vertex between the sub-skin regions, and thus the parcel division auxiliary line may be accurately determined using the sub-skin regions.

And under the condition that each sub-skin area is obtained after pre-cutting treatment, determining the surface characteristics corresponding to each sub-skin area according to the surface characteristics corresponding to the skin area. Specifically, based on the earth surface characteristics corresponding to the sub-skin regions, the skin plots of the sub-skin regions can be divided to obtain at least one skin plot, and therefore skin patch data during rendering of the rock terrain is determined by the skin plots.

In a specific implementation, when the skin block division is performed on each sub-skin region, the following manner may be adopted: for any sub-skin area, determining a land parcel division auxiliary line for the sub-skin area based on the earth surface characteristics corresponding to the sub-skin area; and carrying out skin plot division on the sub-skin region based on the plot division auxiliary line determined for the sub-skin region to obtain at least one skin plot corresponding to the sub-skin region.

Specifically, when determining a parcel division auxiliary line according to the surface features corresponding to the sub-skin regions, refer to fig. 3, which is a schematic diagram of a parcel division auxiliary line provided in an embodiment of the present disclosure. According to the schematic diagram, when the land parcel division auxiliary line is determined by using the surface features corresponding to the sub-skin region, for example, the land parcel division auxiliary line may be formed by connecting point cloud points at ridge line positions corresponding to the surface features in the sub-skin region, that is, the land parcel division auxiliary line having a plurality of turning points is formed by connecting cloud points of partial points at the ridge line with a dark color in the drawing. In a possible case, the auxiliary line for dividing the land parcel can be determined by manually selecting point cloud points, or the auxiliary line for dividing the land parcel can be formed by screening the point cloud points according to the characteristics of the earth surface and connecting the screened point cloud points.

In another possible case, the parcel-dividing auxiliary line may also be determined according to the sub-skin region obtained after the pre-cutting process, for example, a vertex located at a ridge line is determined in the sub-skin region, and then the parcel-dividing auxiliary line is determined along a boundary line of the vertex on the sub-skin region. For the case of sharing the vertex by the sub-skin regions, if the sub-skin regions are used to determine the parcel division auxiliary lines, because the vertex is shared, when the edge line of one sub-skin region is determined along the vertex, the edge line of the shared vertex is easily determined on the other sub-skin region by mistake, and the obtained parcel division auxiliary line cannot represent the surface features, so that after the skin parcels are divided, the matched skin patch data may not accurately reflect the surface features of the target model at the position.

And under the condition that the plot division auxiliary line is determined, performing skin plot division on the sub-skin region by using the plot division auxiliary line to obtain at least one skin plot corresponding to the sub-skin region. Specifically, a plurality of division nodes may be determined on the parcel division auxiliary line; and aiming at any division node, carrying out skin plot division on the sub-skin region based on the preset division size of the skin plot and the position of the division node on the plot division auxiliary line to obtain at least one skin plot associated with the division node in the sub-skin region.

For example, referring to fig. 4, a schematic diagram of obtaining a plurality of skin plots by performing skin plot division on sub-skin regions by using a plot division auxiliary line is provided for the embodiment of the present disclosure. For convenience of description, black lines are marked on a land division auxiliary line, and division nodes are represented by black dots on the marked black lines.

When the division node is determined, an inflection point formed by bending on the auxiliary line for dividing the land parcel can be used as the division node. In a possible case, if there is a long straight line between two inflection points, a node may be further selected from the straight line, for example, a longest length between two divided nodes is set, and when determining the position of the divided node on the auxiliary line for dividing the parcel, the length between two divided nodes is ensured to be smaller than the longest length. Or, at least one division node can be randomly selected on the land parcel division auxiliary line.

After the division nodes are determined from the auxiliary line for dividing the land parcel, the auxiliary line for dividing the sub-skin area can be divided along the land parcel, and the division nodes are used for dividing the sub-skin area. In a possible case, two straight lines may extend from the sub-skin region along two adjacent division nodes on the parcel division auxiliary line, a plurality of nodes may be further determined on the two straight lines, and the two straight lines and the parcel division auxiliary line may be used to divide the skin parcel into parcels for the selected portion of the sub-skin region frame.

Illustratively, referring to fig. 5, a schematic diagram of a specific determination of a skin parcel provided in an embodiment of the present disclosure is shown; the parcel division auxiliary lines shown in fig. 5 are partial parcel division auxiliary lines in fig. 4. For the

division nodes

51 and 52, two straight lines may extend along the sub-skin region, including a straight line 53 shown in dashed form and a straight line 54. On the

straight lines

53 and 54, a plurality of nodes, such as nodes marked as hollow circles in the figure different from the dividing nodes, may be further determined, and with these nodes and the

straight lines

53 and 54 and the selected portions of the sub-skin region frames together with the plot dividing auxiliary lines, a plurality of skin plots, such as skin plots divided in the form of white lines in the figure, may be determined. When determining the plurality of nodes from the straight line, the plurality of nodes may be determined randomly, equidistantly, or according to the topographic features on the straight line, and may be specifically determined according to the actual situation, which is not described herein again. In this way, since the features on the terrain can be referred to when dividing the skinned land, the method can be more suitable for the features of the target model when dividing the skinned land.

In addition, the skin plots can be divided according to the preset division size of the skin plots and the positions of the division nodes on the plot division auxiliary lines to divide the skin plots for the sub-skin areas. For example, see fig. 6, which is another schematic diagram of a specific determination of the skin parcel. For the dividing nodes 61 and the dividing nodes 62, a plurality of skin patches, for example, three skin patches selected by a black line frame, may be divided on the sub-skin region according to the preset dividing size of the skin patches. In this way, the resulting skin patches are more easily controlled in shape to conform to the calibrated skin patches described below than in the manner shown in fig. 5, and therefore are more efficient in subsequent matching of the skin patches.

For the above S103, in the case of determining at least one skin parcel, a corresponding calibrated skin parcel may also be matched for the skin parcel. The calibration skin land can be designed into a rectangular land, such as three rectangular lands with the length-width ratio of 1:2, 1:1 and 2: 1; under the condition of determining the calibration skin plots, corresponding skin patch data can be determined for the calibration skin plots, so that corresponding rock terrain differences can be determined for the calibration skin plots of different shapes through the different skin patch data.

For any skin plot, because the skin plot divided by the skin plot is not guaranteed to be a standard rectangle when the skin plot is divided, an approximate rectangle can be fitted for the skin plot through each vertex of the skin plot. After determining the rectangle corresponding to the skin parcel, using the characteristics of the rectangle, such as the aspect ratio characteristics, the corresponding target skin parcel may be determined in the calibration skin parcel to determine the skin patch data corresponding to the skin parcel.

In one possible case, the calibration skin patch has a fixed size, for example, a size of 10 pixels × 10 pixels, in addition to a specific aspect ratio. And for any skin plot, the sizes of the skin plots are not completely consistent, so that after the corresponding target calibration skin plot is determined, scaling processing can be further performed on skin patch data of the target calibration skin plot to obtain skin patch data capable of covering the skin plot, and the skin patch data can be used as the target skin patch data.

For the above S104, under the condition that the target skin patch data corresponding to each skin parcel is determined, the target model can be rendered and displayed with the rock terrain by using the target skin patch data.

Illustratively, referring to fig. 7, a schematic diagram of an object model rendering rock terrain is provided in an embodiment of the present disclosure. Fig. 7 (a) shows a schematic diagram after the rendering display manner provided by the embodiment of the present disclosure is used to render a rock terrain for the target model, and since the rendering is performed by dividing the skin parcel into skin parcels with smaller granularity when the rock terrain is rendered in the embodiment of the present disclosure, the rendered rock terrain fits the terrain features at different positions in detail compared with the case of performing the integral rock terrain rendering on the target model in a large area in fig. 7 (b), and thus the rendering display result is more realistic.

It will be understood by those skilled in the art that in the method of the present invention, the order of writing the steps does not imply a strict order of execution and any limitations on the implementation, and the specific order of execution of the steps should be determined by their function and possible inherent logic.

Based on the same inventive concept, a rendering display device corresponding to the rendering display method is also provided in the embodiments of the present disclosure, and because the principle of solving the problem of the device in the embodiments of the present disclosure is similar to the rendering display method in the embodiments of the present disclosure, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.

Referring to fig. 8, a schematic diagram of a rendering display apparatus provided in an embodiment of the present disclosure is shown, where the apparatus includes: a first processing module 81, a dividing module 82, a second processing module 83, and a rendering display module 84; wherein the content of the first and second substances,

the first processing module 81 is configured to obtain a target model of a rock terrain to be rendered, and determine a skin area of the rock terrain to be rendered for the target model based on gradient information corresponding to cloud points of each point in the target model;

the dividing module 82 is configured to perform skin parcel division on the skin region based on the surface features corresponding to the skin region to obtain at least one skin parcel of the rock terrain to be rendered;

the second processing module 83 is configured to match a corresponding target calibration skin parcel for any skin parcel from preset calibration skin parcels, and determine corresponding target skin patch data for the skin parcel based on skin patch data corresponding to the target calibration skin parcel;

and a rendering and displaying module 84, configured to render and display the rock terrain of the target model based on the determined target skin patch data corresponding to each skin parcel.

In an optional embodiment, when determining, for the target model, a skin region of the rock terrain to be rendered based on gradient information corresponding to cloud points of each point in the target model, the first processing module 81 is configured to: screening target cloud points of which the corresponding gradient information is in the gradient range from the cloud points of each point on the basis of the gradient information corresponding to the cloud points of each point and a preset gradient range determined for the rock terrain; and determining the skin area based on the position information of the target point cloud point in the target model.

In an optional embodiment, before performing skin parcel division on the skin area based on the surface feature corresponding to the skin area to obtain at least one skin parcel of the rock terrain to be rendered, the dividing module 82 is further configured to: pre-cutting the skin area to obtain each sub-skin area of the skin area; the dividing module 82 is configured to, when performing skin parcel division on the skin region based on the surface features corresponding to the skin region to obtain at least one skin parcel of the rock terrain to be rendered,: determining the earth surface characteristics corresponding to the sub-skin areas respectively based on the earth surface characteristics corresponding to the skin areas; and respectively carrying out covering plot division on each sub-covering region based on the earth surface characteristics respectively corresponding to each sub-covering region to obtain at least one covering plot.

In an alternative embodiment, the dividing module 82, when performing the pre-cutting process on the skin region to obtain each sub-skin region of the skin region, is configured to: pre-cutting the skin area based on a plurality of preset plane directions to obtain sub-skin areas corresponding to the skin area in the plurality of plane directions.

In an optional implementation, the dividing module 82 is further configured to: and in response to the fact that the length of the sub-skin area in any plane direction in the preset direction exceeds a preset length threshold value, performing secondary cutting processing on the sub-skin area in the preset direction, and updating each sub-skin area corresponding to the skin area.

In an alternative embodiment, the dividing module 82 performs pre-cutting on the skin region to obtain each sub-skin region of the skin region, and is configured to: in response to the inclusion of a hole-shaped skin region in the skin region, determining a corresponding cut line for the hole-shaped skin region; the cutting line is used for splitting the hollow skin area into a plurality of skin areas which are not communicated;

In an optional embodiment, when the dividing module 82 performs skin block division on each sub-skin region based on the ground surface features corresponding to each sub-skin region, respectively, to obtain the at least one skin block, the dividing module is configured to: for any sub-skin area, determining a land parcel division auxiliary line for the sub-skin area based on the earth surface characteristics corresponding to the sub-skin area; and carrying out skin plot division on the sub-skin region based on the plot division auxiliary line determined for the sub-skin region to obtain at least one skin plot corresponding to the sub-skin region.

In an optional embodiment, when the dividing module 82 performs skin parcel division on the sub-skin region based on the parcel division auxiliary line determined for the sub-skin region to obtain at least one skin parcel corresponding to the sub-skin region, the dividing module is configured to: determining a plurality of division nodes on the plot division auxiliary line; and aiming at any division node, performing skin parcel division on the sub-skin area based on the preset division size of the skin parcel and the position of the division node on the parcel division auxiliary line to obtain at least one skin parcel associated with the division node in the sub-skin area.

The description of the processing flow of each module in the apparatus and the interaction flow between the modules may refer to the relevant description in the above method embodiments, and will not be described in detail here.

An embodiment of the present disclosure further provides a computer device, as shown in fig. 9, which is a schematic structural diagram of the computer device provided in the embodiment of the present disclosure, and the computer device includes:

a processor 10 and a memory 20; the memory 20 stores machine-readable instructions executable by the processor 10, the processor 10 being configured to execute the machine-readable instructions stored in the memory 20, the processor 10 performing the following steps when the machine-readable instructions are executed by the processor 10:

acquiring a target model of a rock terrain to be rendered, and determining a skin area of the rock terrain to be rendered for the target model based on gradient information corresponding to cloud points of each point in the target model; performing skin plot division on the skin area based on the earth surface features corresponding to the skin area to obtain at least one skin plot of the rock terrain to be rendered; for any skin plot, matching a corresponding target calibration skin plot for the skin plot from preset calibration skin plots, and determining corresponding target skin patch data for the skin plot based on skin patch data corresponding to the target calibration skin plot; and rendering and displaying the rock terrain of the target model based on the determined target skin patch data respectively corresponding to each skin plot.

The storage 20 includes a memory 210 and an external storage 220; the memory 210 is also referred to as an internal memory, and temporarily stores operation data in the processor 10 and data exchanged with the external memory 220 such as a hard disk, and the processor 10 exchanges data with the external memory 220 through the memory 210.

For the specific execution process of the instruction, reference may be made to the step of the rendering display method in the embodiment of the present disclosure, and details are not described here again.

The embodiments of the present disclosure also provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program performs the steps of the rendering display method in the above method embodiments. The storage medium may be a volatile or non-volatile computer-readable storage medium.

The embodiments of the present disclosure also provide a computer program product, where the computer program product carries a program code, and instructions included in the program code may be used to execute the steps of the rendering and displaying method in the foregoing method embodiments, which may be referred to specifically in the foregoing method embodiments, and are not described herein again.

The computer program product may be implemented by hardware, software or a combination thereof. In an alternative embodiment, the computer program product is embodied in a computer storage medium, and in another alternative embodiment, the computer program product is embodied in a Software product, such as a Software Development Kit (SDK), or the like.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In the several embodiments provided in the present disclosure, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present disclosure. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present disclosure, which are used for illustrating the technical solutions of the present disclosure and not for limiting the same, and the scope of the present disclosure is not limited thereto, and although the present disclosure is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope of the disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present disclosure, and should be construed as being included therein. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A rendering display method, comprising:

acquiring a target model of a rock terrain to be rendered, and determining a skin area of the rock terrain to be rendered for the target model based on gradient information corresponding to cloud points of each point in the target model;

performing skin plot division on the skin area based on the earth surface features corresponding to the skin area to obtain at least one skin plot of the rock terrain to be rendered;

for any skin plot, matching a corresponding target calibration skin plot for the skin plot from preset calibration skin plots, and determining corresponding target skin patch data for the skin plot based on skin patch data corresponding to the target calibration skin plot;

and rendering and displaying the rock terrain of the target model based on the determined target skin patch data respectively corresponding to each skin parcel.

2. The method of claim 1, wherein determining a skin region of the rock terrain to be rendered for the target model based on slope information corresponding to each cloud point in the target model comprises:

screening target cloud points of which the corresponding gradient information is in the gradient range from the cloud points of each point on the basis of the gradient information corresponding to the cloud points of each point and a preset gradient range determined for the rock terrain;

and determining the skin area based on the position information of the cloud point of the target point in the target model.

3. The method of claim 1, wherein before performing skin parcel division on the skin region based on the surface features corresponding to the skin region to obtain at least one skin parcel of the rocky terrain to be rendered, the method further comprises:

pre-cutting the skin area to obtain each sub-skin area of the skin area;

the skin plot partitioning is carried out on the skin region based on the earth surface features corresponding to the skin region, so as to obtain at least one skin plot of the rock terrain to be rendered, and the method comprises the following steps:

determining the earth surface characteristics corresponding to the sub-skin areas respectively based on the earth surface characteristics corresponding to the skin areas;

and respectively carrying out covering plot division on each sub-covering region based on the earth surface characteristics respectively corresponding to each sub-covering region to obtain at least one covering plot.

4. The method of claim 3, wherein the pre-cutting the skin region to obtain each sub-skin region of the skin region comprises:

and pre-cutting the skin area based on a plurality of preset plane directions to obtain sub-skin areas corresponding to the skin area in the plurality of plane directions.

5. The method of claim 4, further comprising:

and in response to the fact that the length of the sub-skin area in any plane direction in the preset direction exceeds a preset length threshold value, performing secondary cutting processing on the sub-skin area in the preset direction, and updating each sub-skin area corresponding to the skin area.

6. The method of claim 3, wherein the pre-cutting the skin region to obtain each sub-skin region of the skin region comprises:

in response to the inclusion of a hole-shaped skin region in the skin region, determining a corresponding cut line for the hole-shaped skin region; the cutting line is used for splitting the hollow skin area into a plurality of skin areas which are not communicated;

7. The method according to claim 3, wherein the skin parcel division is performed on each sub-skin region respectively based on the earth surface features corresponding to each sub-skin region respectively to obtain the at least one skin parcel, and the method comprises:

for any sub-skin area, determining a land parcel division auxiliary line for the sub-skin area based on the earth surface characteristics corresponding to the sub-skin area;

and carrying out skin plot division on the sub-skin region based on the plot division auxiliary line determined for the sub-skin region to obtain at least one skin plot corresponding to the sub-skin region.

8. The method according to claim 7, wherein the skin parcel division is performed on the sub-skin region based on the parcel division auxiliary line determined for the sub-skin region, so as to obtain at least one skin parcel corresponding to the sub-skin region, and the method comprises:

determining a plurality of division nodes on the land parcel division auxiliary line;

and aiming at any division node, performing skin parcel division on the sub-skin area based on the preset division size of the skin parcel and the position of the division node on the parcel division auxiliary line to obtain at least one skin parcel associated with the division node in the sub-skin area.

9. A rendering display device, comprising:

the first processing module is used for acquiring a target model of a rock terrain to be rendered, and determining a skin area of the rock terrain to be rendered for the target model based on gradient information corresponding to cloud points of each point in the target model;

the dividing module is used for dividing the skin region into skin plots based on the surface features corresponding to the skin region to obtain at least one skin plot of the rock terrain to be rendered;

the second processing module is used for matching a corresponding target calibration skin plot for any skin plot from preset calibration skin plots, and determining corresponding target skin patch data for the skin plot based on skin patch data corresponding to the target calibration skin plot;

and the rendering display module is used for rendering and displaying the rock terrain of the target model based on the determined target skin patch data respectively corresponding to each skin parcel.

10. A computer device, comprising: a processor, a memory storing machine readable instructions executable by the processor, the processor for executing the machine readable instructions stored in the memory, the processor performing the steps of the rendering display method of any one of claims 1 to 8 when the machine readable instructions are executed by the processor.

11. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a computer device, performs the steps of the rendering display method according to any one of claims 1 to 8.