CN108543311A - A method of automatically generating scene vegetation system - Google Patents
A method of automatically generating scene vegetation system Download PDFInfo
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- CN108543311A CN108543311A CN201810359270.XA CN201810359270A CN108543311A CN 108543311 A CN108543311 A CN 108543311A CN 201810359270 A CN201810359270 A CN 201810359270A CN 108543311 A CN108543311 A CN 108543311A
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- plants
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- automatically generating
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
- A63F13/60—Generating or modifying game content before or while executing the game program, e.g. authoring tools specially adapted for game development or game-integrated level editor
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
- A63F2300/60—Methods for processing data by generating or executing the game program
- A63F2300/66—Methods for processing data by generating or executing the game program for rendering three dimensional images
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Cultivation Of Plants (AREA)
Abstract
The present invention provides a kind of methods automatically generating scene vegetation system, include the following steps：1）The flowers and plants attribute of editor ground surface material；2）It preserves and generates flowers and plants allocation list；3）Load flowers and plants allocation list；4）Traverse landform minimum unit, according to the weight of landform material, draw the density map of vegetation, the density value of vegetation group information calls flowers and plants to create interface and create interface according to flowers and plants and return the result to judge whether that vegetation can be created in the landform minimum unit.The present invention will draw landform and is combined with plantation flowers and plants, then reuses rational optimization algorithm, has not only improved production efficiency but also improved rendering effect.
Description
Technical field
The present invention relates to game engine development technique field, more particularly to a kind of side automatically generating scene vegetation system
Method.
Background technology
In 3D engine projects, flowers and plants are the basic elements of a scene.Traditional plantation flowers and plants method, is existed by mouse
There is the place that ground shows to click or pull plantation, when the oversized quantity of scene is excessive, when a variety of geography and climates, production efficiency
It is extremely low.The density domination of traditional cultivation method, a variety of flowers and plants mixed plantings, the sparse processing in edge wait these problems to be required for U.S.
The considerable workload of art.The flowers and plants of traditional cultivation method plantation record once plantation and achieve, must first be deleted if you need to change
It plants again.
Game improves game rendering efficiency, flowers and plants is rendered using billboard technique to save resource mostly.Bulletin board wash with watercolours
The flowers and plants dyed, expression effect are false.
During traditional landform makes, art designing makes landform texturing, flowers and plants material according to the demand of planning
Textures, model of place and textures.Scene editorial staff makes Terrain Elevation data, brushes landform material quality data processed, plantation landform flower
Careless data put five steps of landform object object.
Invention content
In order to solve the shortcomings of the prior art, the purpose of the present invention is to provide one kind automatically generating scene vegetation system
The method of system.
To achieve the above object, a kind of method automatically generating scene vegetation system provided by the invention, which is characterized in that
Include the following steps：
1）The flowers and plants attribute of editor ground surface material；
2）It preserves and generates flowers and plants allocation list；
3）Load flowers and plants allocation list；
4）Landform minimum unit is traversed, according to the weight of landform material, the density value of the density map for drawing vegetation, vegetation group information
It calls flowers and plants to create interface and create interface according to flowers and plants and return the result to judge whether to create in the landform minimum unit to plant
Quilt.
Further, the flowers and plants attribute includes global property, organizes the material properties of attribute and flowers and plants model resource；It is described
Global property includes that fade out starting point, shade of indication range, shade fades out range；Described group of attribute include flowers and plants model resource, close
Angle value, LOD switch attributes, random angles scaling switch, patch ground switch, gradient coefficient.
Further, step 1）The flowers and plants attribute of editor ground surface material, including increase and be arranged vegetation attribute, it creates
Group, and setting group attribute.
Further, the flowers and plants create the attribute value of the current Traversal Unit of interface, are carried out to the weighted value of material
Calorific power judges, if the weighted value of material is less than 0.4F, judges that the landform minimum unit cannot plant vegetation；If material
Weighted value be greater than or equal to 0.4F, then calculate plantation probability and to plantation probability judge.
Further, weighted value (density value of vegetation)+density map of plantation probability=Random (the 1.0F)+vegetation
Density value, wherein the codomain of density map density value is [- 1.0F, 1.0F].
Further, if plantation probability is less than 1, failure is returned, judges that the landform minimum unit cannot plant plant
Quilt；If planting probability is greater than or equal to 1, calculates the inclined degree of the landform minimum unit and it is judged.
Further, (landform normal line vector dot is straight up by inclined degree=1.0F-of the landform minimum unit
Vector).
Further, if the inclined degree of the landform minimum unit is more than the gradient coefficient of flowers and plants, failure is returned,
Judge that the landform minimum unit cannot plant vegetation；If the inclined degree of the landform minimum unit is less than or equal to flowers and plants
Gradient coefficient, then return to success.
Further, if call vegetation plantation interface returns successfully, planting location for (Random (0.5F)+nx,
Ny, Random (0.5F)+nz), the coordinate of mesorelief minimum unit is（Nx, ny, nz）.
The present invention, which provides, a kind of solves that traditional flowers and plants plantation efficiency is low, and bulletin board rendering effect is poor, overall effect
It is difficult to adjust, the method for not supporting the technical problems such as secondary editor.The key point of the present invention is to draw landform and plants flowers and plants
Be combined, then reuse rational optimization algorithm, not only improved production efficiency but also improved rendering effect.
In addition, the flowers and plants planted in batches in the present invention, support geometry instantiation to draw, rendering effect is further improved
Rate.
The invention has the advantages that：
（1）Improve plantation efficiency
During making landform, it is pre-configured with the flowers and plants model of (or subsequent modification) good material matching（It is one or more）,
Set the parameters such as density, size.Then flowers and plants have just been planted automatically in brush landform material, when switching brush landform material,
Also it can automatically switch the type of plantation flowers and plants.Flowers and plants progress synchronous with brush landform material is planted, the work of flowers and plants making is eliminated
Sequence.
（2）Abundant scene overall effect
According to landform material flexible configuration flowers and plants type, quantity, density, during brush landform, current landform material
Mixing intensity also can be as the controlling elements of flowers and plants density.Therefore, the transition of fading out of the mixing of the more materials of landform, boundary is isopycnic
Variation, can influence the distribution of flowers and plants, and more traditional to manually control planting density distribution more reasonable.
（3）Facilitate modification
This method supports whenever change the configuration parameter of the flowers and plants of landform, including additions and deletions, replacement, sparse processing, at size
Reason etc..And support the change of landform, for example landform needs height fluctuating modification, flowers and plants completely can be with automatic adaptation, tradition kind
The flowers and plants of plant need to delete manually, remake, and large area change is extremely difficult.
（4）Support true flowers and plants model
Automatic planting flowers and plants, flowers and plants are the common model file of scene.Model file herein can be flower, grass, tree, stone
The scene objects such as head, shell, crops, the fine arts can arbitrarily make, unrestricted, the expression effect of flowers and plants, depend on the fine arts
Design and making.
The present invention is to operate and promoted production to the optimization for brushing landform material quality data processed and plantation landform flowers and plants data progress
A kind of method of effect.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, and with the present invention's
Embodiment together, for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the flow chart according to a kind of method automatically generating scene vegetation system of the present invention；
Fig. 2 is the flow chart that interface is created according to the flowers and plants of embodiments of the present invention.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Fig. 1 is according to a kind of flow chart of method automatically generating scene vegetation system of the present invention, and Fig. 2 is according to this hair
The flowers and plants of bright embodiment create the flow chart of interface.Below with reference to Fig. 1 and Fig. 2, scene is automatically generated to the present invention
The method of vegetation system is described in detail.
First, in step 101, the flowers and plants attribute of editor ground surface material.Flowers and plants attribute includes global property (for example, display
Fade out starting point, shade of range, shade fades out range etc.), group attribute is (for example, flowers and plants model resource, density value, LOD switching belong to
Property, random angles scaling switch, patch ground switch, gradient coefficient etc.), the material properties of flowers and plants model resource, one of which earth's surface
Material corresponds to multigroup flowers and plants.
In this step, it needs first to edit ground surface material, such as textures, Ambient, Diffuse, Specular etc..Herein
On the basis of, it can increase and be arranged some flowers and plants attributes, wherein flow is：Establishment group, then setting group attribute, as described above,
Group attribute includes model, density, size etc..Can be that every group of material increases multigroup flowers and plants, multigroup flower in brush landform material
Grass can be planted according to the attribute of oneself simultaneously.
In step 102, preserves and generate flowers and plants allocation list.When having configured the flowers and plants attribute of landform material, just establish
The related information of landform material and flowers and plants sowing parameter, these many related informations are stored in a mapping table, constitute
The control information of our flowers and plants implant systems.When scene is kept, which just stores into configuration file.
In step 103, flowers and plants allocation list is loaded.When loading scenario, it can execute and load the allocation list, be loaded into memory
In, as the control information for creating flowers and plants.
The flowers and plants layout effect most cases automatically generated have met generation demand.But if still have to distributed effect
Higher requirement, it is desirable to which local adjustment or change, technical scheme of the present invention is to this offer support.The technical program provides one
The technology of kind hand brush density, directly controls the Density Distribution of flowers and plants.So-called hand brush density, just as brushing landform material processed
The same operation, density of setting value, brush system operation adjust density value, continue brush system, until meet demand.In our meetings of backstage
By a kind of density map of flowers and plants of brush system operation generation or mask is made to scheme, to record the density information manually adjusted.No
The region of hand brush is that will not generate the density map.
In step 104-106, landform minimum unit will be traversed, calls flowers and plants to create interface, and created according to calling flowers and plants
Returning the result for interface decides whether to plant flowers and plants.
Wherein, when traversing a certain landform minimum unit and when going to establishment flowers and plants step（Landform material quality data at this time
It has loaded）, obtain landform the list of surface material and each material weight information, then by unit（Landform minimum unit）It takes
Material indexes, material weight, our times coordinate, density map information, then passes to these parameters and creates flowers and plants interface, connects
Mouth, which returns, successfully then to carry out step 106 and provides to need the information such as the position, orientation, the size that create, and unsuccessfully expression does not need for return
It creates, continues step 107.
The function that flowers and plants described in the step 105 of Fig. 1 create interface is that can judge can be in current Traversal Unit kind
Plant flowers and plants.The course of work that the flowers and plants involved in the step 105 of Fig. 1 create interface is described in detail with reference to Fig. 2：First in step
Rapid 201, the attribute value of current Traversal Unit is obtained, then the weighted value of landform unit material matter is judged in step 202：When
The weighted value of itself of material is less than 0.4F, then is directly judged as to plant；When the weighted value of itself of material is more than or equal to
When 0.4F, then next step, i.e. step 203 are carried out, wherein F is floating-point values.In step 203, plantation probability is calculated, is led to
Cross plantation probability（Density）It can be planted to control, weighted value+density map of plantation probability=Random (1.0F)+flowers and plants is close
Angle value.Wherein, density map density value can be negative value and honest, and what is indicated when negative value is to reduce plantation probability（Final purpose
It is to reduce planting density）, indicate to increase plantation probability when positive value（Final purpose is to increase planting density）.It is right in step 204
Plantation probability is judged：When planting probability less than 1, then failure is returned to, expression cannot plant flowers and plants herein；When plantation probability
When more than or equal to 1, then next step, i.e. step 205 are carried out, wherein Random (x) indicates to take one to float at random from the sections 0-x
Points.In step 205, the inclined degree of geomorphic unit, inclined degree=1.0F-of landform minimum unit are calculated（Landform normal
Vectorial dot is vectorial straight up）.In step 206, according to the current landform minimum unit being calculated in step 205
The inclined degree of elemental area and the gradient coefficient of flowers and plants are judged, if the inclined degree of landform minimum unit is less than or equal to
The gradient coefficient of flowers and plants, then it represents that this region can plant flowers and plants, return successfully；, whereas if the inclination of landform minimum unit
Degree is more than the gradient coefficient of flowers and plants, then it represents that this region cannot plant flowers and plants, return to failure.
Referring back to Fig. 1, if step 105 returns successfully, flowers and plants are planted in step 106 kind.If the minimum unit of landform
For u, the world coordinates of the unit is (nx, ny, nz), then the planting location returned=（Random (0.5F)+nx, ny,
Random(0.5F) + nz）.Other azimuth informations, rotation information similarly execute random function generation.Here it has used random
Number, needs before calling random function, sets fixed random seed, here using the world coordinates of the unit as broadcasting kind
Son.Benefit using world coordinates as random seed is not only to have ensure that the random number in different units is variant, but also can guarantee every
Position is constant when secondary establishment.
If step 106 returns to failure, then it represents that the plantation probability that the unit calculates is smaller, is unsatisfactory for plantation and wants
It asks.
It can be seen that, if upper flowers and plants are planted in each unit, by the weight of landform material, the density map of drafting, flowers and plants
Three factors of density value of group information influence.
During planting flowers and plants, when plantation flowers and plants region is precipitous inclined-plane, if the flowers and plants of plantation are upward always,
Then flowers and plants model can be caused to have the problem inside interspersed inclined-plane.It would be expected that calculating the court on the inclined-plane of the target point of plantation in this programme
To then using the direction when front bevel as the vertical direction of flowers and plants, guarantee flowers and plants are to be affixed on ground always, are looked unfamiliar backwards to ground
It is long, to solve the problems, such as that flowers and plants model interts inclined-plane.
The flowers and plants of generation are in the when geometry instantiation render used in terms of rendering.About geometry instantiation render, please refer to
Related description document.Thus every flowers and plants only have recorded coordinate information inside program, without being created that a large amount of scenario objects.
The brush process of the present invention can be executed as conventional brush landform material.It will be real-time when brushing landform material processed
Update show flowers and plants.It is of course also possible to select to show flowers and plants when closing brush is processed.
In the above-described embodiments, the situation that vegetation is flowers and plants is described, it should be understood that, flowers and plants can
Think other any models in scene vegetation system.
One of ordinary skill in the art will appreciate that：The foregoing is only a preferred embodiment of the present invention, and does not have to
In the limitation present invention, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art
For, still can to foregoing embodiments record technical solution modify, or to which part technical characteristic into
Row equivalent replacement.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of method automatically generating scene vegetation system, which is characterized in that include the following steps：
1）The flowers and plants attribute of editor ground surface material；
2）It preserves and generates flowers and plants allocation list；
3）Load flowers and plants allocation list；
4）Landform minimum unit is traversed, according to the weight of landform material, the density value of the density map for drawing vegetation, vegetation group information
It calls flowers and plants to create interface and create interface according to flowers and plants and return the result to judge whether to create in the landform minimum unit to plant
Quilt.
2. a kind of method automatically generating scene vegetation system according to claim 1, which is characterized in that the flowers and plants category
Property comprising global property, organize attribute and flowers and plants model resource material properties；The global property is light comprising indication range, shade
Go out starting point, shade fades out range；Described group of attribute includes flowers and plants model resource, density value, LOD switch attributes, random angles contracting
It decontrols and closes, switchs to patch, gradient coefficient.
3. a kind of method automatically generating scene vegetation system according to claim 1, which is characterized in that step 1）It is described
The flowers and plants attribute of editor ground surface material, including increase and be arranged vegetation attribute, establishment group, and setting group attribute.
4. the method according to claim 1 for automatically generating scene vegetation system, which is characterized in that the flowers and plants create and connect
Mouth receives the attribute value of current Traversal Unit, calorific power judgement is carried out to the weighted value of material, if the weighted value of material is less than
0.4F then judges that the landform minimum unit cannot plant vegetation；If the weighted value of material is greater than or equal to 0.4F, calculate
Plantation probability simultaneously judges plantation probability.
5. the method according to claim 4 for automatically generating scene vegetation system, which is characterized in that the plantation probability=
Weighted value (density value of vegetation)+density map density value of Random (1.0F)+vegetation, wherein the codomain of density map density value
For [- 1.0F, 1.0F].
6. the method according to claim 4 or 5 for automatically generating scene vegetation system, which is characterized in that if plantation is general
Rate is less than 1, then returns to failure, judge that the landform minimum unit cannot plant vegetation；If planting probability is greater than or equal to 1,
It then calculates the inclined degree of the landform minimum unit and it is judged.
7. the method according to claim 6 for automatically generating scene vegetation system, which is characterized in that the landform is minimum single
Inclined degree=1.0F-of member (landform normal line vector dot is vectorial straight up).
8. the method according to claim 7 for automatically generating scene vegetation system, which is characterized in that if the landform is most
The inclined degree of junior unit is more than the gradient coefficient of flowers and plants, then returns to failure, judge that the landform minimum unit cannot plant plant
Quilt；If the inclined degree of the landform minimum unit is less than or equal to the gradient coefficient of flowers and plants, success is returned.
9. the method according to claim 8 for automatically generating scene vegetation system, which is characterized in that if calling vegetation kind
It plants interface to return successfully, then planting location is (Random (0.5F)+nx, ny, Random (0.5F)+nz), and mesorelief is minimum
The coordinate of unit is（Nx, ny, nz）.
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Cited By (8)
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| CN110264553A (en) * | 2019-07-19 | 2019-09-20 | 网易（杭州）网络有限公司 | The method and apparatus of surface vegetation processing |
| CN111524214A (en) * | 2020-06-04 | 2020-08-11 | 广州西山居世游网络科技有限公司 | Method and device for manufacturing vegetation biological community |
| WO2020190565A1 (en) * | 2019-03-19 | 2020-09-24 | Highwire Games Llc | Dynamic 3d environment generation |
| CN111882640A (en) * | 2020-07-24 | 2020-11-03 | 上海米哈游天命科技有限公司 | Rendering parameter determination method, device, equipment and storage medium |
| CN111882636A (en) * | 2020-07-24 | 2020-11-03 | 上海米哈游天命科技有限公司 | Picture rendering method, device, equipment and medium |
| CN111888763A (en) * | 2020-08-26 | 2020-11-06 | 网易（杭州）网络有限公司 | Method and device for generating obstacles in game scene |
| CN113368503A (en) * | 2021-07-06 | 2021-09-10 | 福建天晴在线互动科技有限公司 | Method and system for reusing terrain material |
| CN114344894A (en) * | 2022-03-18 | 2022-04-15 | 腾讯科技（深圳）有限公司 | Scene element processing method, device, equipment and medium |
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| CN111882640A (en) * | 2020-07-24 | 2020-11-03 | 上海米哈游天命科技有限公司 | Rendering parameter determination method, device, equipment and storage medium |
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| CN111888763A (en) * | 2020-08-26 | 2020-11-06 | 网易（杭州）网络有限公司 | Method and device for generating obstacles in game scene |
| CN111888763B (en) * | 2020-08-26 | 2024-02-02 | 网易（杭州）网络有限公司 | Method and device for generating obstacle in game scene |
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