CN110787445A

CN110787445A - Method for generating sandpit sandbag in virtual simulation psychological sand table game

Info

Publication number: CN110787445A
Application number: CN201911107952.2A
Authority: CN
Inventors: 李鹏
Original assignee: Shandong Leadthing Information Science And Technology Co Ltd
Current assignee: Shandong Leadthing Information Science And Technology Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-02-14

Abstract

The invention provides a method for generating a sandpit sandbag in a virtual simulation mental sand table game, which comprises the following steps of: determining a reference point for generating a sand pit or a sand bag; taking the datum point as an end point, and making an axis with a preset length, wherein the preset length is the depth of a sand pit to be generated or the height of a sand bag to be generated; and determining the radius of a circle corresponding to each point on the axis through a Sigmoid function so as to determine the side surface of the sand pit or the sand bag, wherein each circle takes the corresponding point as the center and is perpendicular to the axis. The invention can conveniently and quickly generate the sandpit sandbag in the virtual simulation mental sand table game, and the generated sandpit sandbag has higher fidelity.

Description

Method for generating sandpit sandbag in virtual simulation psychological sand table game

Technical Field

The invention relates to the technical field of virtual simulation, in particular to a generation method of a sandpit sandbag in a virtual simulation mental sand table game.

Background

In the 3D virtual simulation mental sand table game, the landform operation mode and the expression effect are a great technical difficulty. It is very difficult to generate a sandpit or a sandbag with high efficiency and standard, and to make the expression effect of the sandpit or the sandbag completely conform to the shape and the style of the real sandpit and the sandbag.

Disclosure of Invention

The invention provides a method for generating a sandpit sandbag in a virtual simulation mental sandtable game, aiming at solving the technical problems, so that the sandpit sandbag in the virtual simulation mental sandtable game can be conveniently and quickly generated, and the generated sandpit sandbag has higher fidelity.

The technical scheme adopted by the invention is as follows:

a method for generating a sandpit sandbag in a virtual simulation mental sand table game comprises the following steps: determining a reference point for generating a sand pit or a sand bag; taking the reference point as an end point, and making an axis with a preset length, wherein the preset length is the depth of a sand pit to be generated or the height of a sand pack to be generated; and determining the radius of a circle corresponding to each point on the axis through a Sigmoid function so as to determine the side surface of the sand pit or the sand bag, wherein each circle takes the corresponding point as the center and is perpendicular to the axis.

And converting the coordinate position of a window from a user clicking position to the terrain by using a ray, wherein the collision point of the ray and the terrain is used as the datum point.

And taking the distance between the circle center and the reference point as a dependent variable, taking the radius as an independent variable, and substituting the independent variable into the Sigmoid function to calculate the radius of each circle.

The invention has the beneficial effects that:

according to the method for generating the sandpit sandbag in the virtual simulation mental sandtable game, the reference point is determined firstly, the reference point is taken as an end point to be used as an axis with a preset length, then a circle corresponding to each point on the axis is determined through a Sigmoid function, so that the side face of the sandpit or the sandbag is determined, therefore, the sandpit sandbag in the virtual simulation mental sandtable game can be generated conveniently and quickly, and the generated sandpit sandbag is high in fidelity.

Drawings

Fig. 1 is a flowchart of a method for generating a sandpit sandbag in a virtual simulated mental sand table game according to an embodiment of the present invention;

fig. 2 is a graph of Sigmoid function.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the method for generating a sandpit sandbag in a virtual simulation mental sand table game according to the embodiment of the present invention includes the following steps:

and S1, determining a reference point for generating the sand pit or the sand bag.

The coordinate position can be converted from a user clicking position to a window of the terrain by taking a ray, and the collision point of the ray and the terrain is taken as a reference point. In one embodiment of the invention, a user can perform a mouse click operation or a touch click operation in view of different operation modes of different virtual simulation devices.

And S2, taking the reference point as an end point, and making an axis with a preset length, wherein the preset length is the depth of the sand pit to be generated or the height of the sand pack to be generated.

That is, a sand pit with a depth of a predetermined length or a sand bag with a height of a predetermined length may be generated within a range with the predetermined length as a radius from the reference point.

And S3, determining the radius of a circle corresponding to each point on the axis through a Sigmoid function to determine the side surface of the sand pit or the sand bag, wherein each circle takes the corresponding point as the center and is perpendicular to the axis.

The Sigmoid function is expressed as follows:

wherein x is independent variable, y is dependent variable, e determines the smoothness of the function curve, and the Sigmoid function graph is shown in fig. 2.

In the embodiment of the present invention, the distance between the center of the circle and the reference point is used as a dependent variable, and the radius is used as an independent variable, and is substituted into the Sigmoid function to calculate the radius of each circle.

That is, the sandpit or the sandbag can be regarded as being formed by overlapping infinite circles along the axis direction, the radius of each circle and the depth or height of the circle are in Sigmoid function relation, and the largest circle is the top of the sandpit or the bottom of the sandbag.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A method for generating a sandpit sandbag in a virtual simulation mental sand table game is characterized by comprising the following steps:

determining a reference point for generating a sand pit or a sand bag;

taking the reference point as an end point, and making an axis with a preset length, wherein the preset length is the depth of a sand pit to be generated or the height of a sand pack to be generated;

and determining the radius of a circle corresponding to each point on the axis through a Sigmoid function so as to determine the side surface of the sand pit or the sand bag, wherein each circle takes the corresponding point as the center and is perpendicular to the axis.

2. The method for generating a sandpit sandbag in a virtual simulated mental sand table game according to claim 1, wherein a ray is taken from the user click position to the window conversion coordinate position of the terrain, and the collision point of the ray and the terrain is taken as the reference point.

3. The method of claim 1, wherein the distance between the center of the circle and the reference point is used as a dependent variable, and the radius is used as an independent variable, and the distance is substituted into the Sigmoid function to calculate the radius of each circle.