CN103310476B - A kind of particle emission method and apparatus - Google Patents
A kind of particle emission method and apparatus Download PDFInfo
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- CN103310476B CN103310476B CN201310206872.9A CN201310206872A CN103310476B CN 103310476 B CN103310476 B CN 103310476B CN 201310206872 A CN201310206872 A CN 201310206872A CN 103310476 B CN103310476 B CN 103310476B
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Abstract
The present invention provides a kind of particle emission method and apparatus.The described method includes: receiving the particIe system of selection and the transmitting attribute for particIe system setting, the transmitting attribute includes number of particles N and particle emission parameter, and N is positive integer；N number of particIe system is created, configures identical particle emission parameter for each particIe system；N number of particIe system interval predetermined time emits particle one by one, when emitting particle, sets zero in the coordinate value of the direction of the launch for current transmitting particle, will emit coordinate position of the particle in the direction of the launch and reduced or increase preset value.The present invention can solve the problem of can not generating neat particle effect picture.
Description
Technical field
The present invention relates to field of Computer Graphics, send out more particularly to a kind of particle emission method and a kind of particle
Injection device.
Background technique
Reeves proposes the method that particIe system is fuzzy objective modeling in nineteen eighty-three, and basic thought is fuzzy
Object regards the molecular particle cluster of numerous grains as, and particle can regard simple point as.Each particle all has the attribute of oneself, such as face
Color, shape, size, life cycle and speed etc., the kinetic property of particle determine its state at different times, grain
Son passage at any time and constantly change.
Particle is emitted by particIe system, and a particIe system is common by a particle emitter, multiple particles influence device
It constitutes, i.e., particIe system generates particle effect.
The transmitting of particle emits in space, and in space, the coordinate of three dimensions is respectively X, Y and Z, and observer is from Z
Particle effect is watched in direction, particle relative to observer position preceding or rear, i.e. Z side related to the coordinate value of Z-direction
To presentation be particle emission bandwagon effect.
The problem of background above technology is (such as point transmitting), grain when the initial position of particle emission is identical
The effect that son transmitting is presented but may be rambling, the relationship of none sequence, can not accomplish particle emission all and be from
What foremost emitted, or from what is emitted below, that is to say, according to the particle emission method in background technique, nothing
Method generates neat particle effect picture.
Summary of the invention
The present invention provides a kind of method and device of particle emission, with solve the particle emission method in background technique without
Method generates the problem of neat particle effect picture.
To solve the above-mentioned problems, the invention discloses a kind of particle emission methods, comprising:
The particIe system of selection and the transmitting attribute for particIe system setting are received, the transmitting attribute includes grain
Subnumber amount N and particle emission parameter, N are positive integer；
N number of particIe system is created, configures identical particle emission parameter for each particIe system；
N number of particIe system interval predetermined time emits particle one by one, when emitting particle, will currently emit particle and exist
The coordinate value of the direction of the launch is set as zero, will emit coordinate position of the particle in the direction of the launch and has reduced or increase preset value.
Preferably, the transmitting attribute further includes the neat mode of particle, the neat mode of particle include decaying preceding and
Decaying is rear.
Preferably, described to have emitted the step of coordinate position of the particle in the direction of the launch reduces or increase preset value packet
It includes:
When the neat mode of the particle is decaying when preceding, the coordinate position that will have emitted particle in the direction of the launch increases in advance
If value；
When the neat mode of the particle is decaying when rear, the coordinate position that will have emitted particle in the direction of the launch reduces in advance
If value.
Preferably, by calling particIe system function to configure identical particle emission parameter for each particIe system.
Preferably, each particIe system emits a particle；
The transmitting attribute of the particIe system further includes X-coordinate value and Y-coordinate value, transmitting speed of the particle in transmitting position
Degree, launch angle, transmitting range.
The present invention also provides a kind of particle emission devices, comprising:
Attribute reception module, the transmitting attribute for receiving the particIe system of selection and being arranged for the particIe system,
The transmitting attribute includes number of particles N and particle emission parameter, and N is positive integer；
System creation module configures identical particle emission for each particIe system and joins for creating N number of particIe system
Number；
Particle emission module emits particle for N number of particIe system interval predetermined time one by one, in transmitting particle
When, zero is set in the coordinate value of the direction of the launch by current transmitting particle, particle will have been emitted in the coordinate position of the direction of the launch
Reduction increases preset value.
Preferably, the transmitting attribute further includes the neat mode of particle, the neat mode of particle include decaying preceding and
Decaying is rear.
Preferably, the particle emission module includes:
The first adjustment submodule is used to when the neat mode of the particle be decaying when preceding, will emit particle and emitted
The coordinate position in direction increases preset value；
Second adjustment submodule is used to when the neat mode of the particle be decaying when rear, will emit particle and emitted
The coordinate position in direction reduces preset value.
Preferably, by calling particIe system function to configure identical particle emission parameter for each particIe system.
Preferably, each particIe system emits a particle；
The transmitting attribute of the particIe system further includes X-coordinate value and Y-coordinate value, transmitting speed of the particle in transmitting position
Degree, launch angle, transmitting range.
Compared with prior art, the present invention includes the following advantages:
The present invention creates equivalent grain after the particIe system for receiving selection and for the transmitting attribute of particIe system setting
The multiple particles system of subnumber amount, the transmitting of multiple particles system interval preset time, and in transmitting by the direction of the launch
Coordinate value be set as zero, will emit particle the direction of the launch coordinate position reduction or increase preset value, it is multiple to adjust
Particle the direction of the launch effect, to generate neat particle effect picture.
Detailed description of the invention
Fig. 1 is a kind of flow chart of particle emission method described in the embodiment of the present invention；
Fig. 2 is a kind of structural block diagram of particle emission device described in the embodiment of the present invention；
Fig. 3 is setting particle property schematic diagram in the embodiment of the present invention；
Fig. 4 is the effect picture using the particle emission of the embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
It is described in detail below by implementation process of the embodiment to the method for the invention.
Referring to Fig.1, it illustrates a kind of flow charts of particle emission method described in the embodiment of the present invention.
Step 101, the particIe system for receiving selection and the transmitting attribute for particIe system setting, the transmitting belong to
Property includes number of particles N and particle emission parameter, and N is positive integer.
In the embodiment of the present invention, the setting to particle property can be submitted by preset link, specifically include selection
ParticIe system, and for the transmitting attribute of particIe system setting, transmitting attribute includes emitting how many a particles and particle
Emission parameter.
Specifically, a particIe system is to influence device by a particle emitter, multiple particles to collectively form, particle
System generates particle effect.Then user can select the particle of current interface by the transmitter template in selection template library
The template of particIe system can be added in particle emission scene on corresponding position by effect browser window.
It, can be by triggering in particle effect browser window to particle emission attribute when setting the transmitting attribute of particle
Setting, as shown in figure 3, for setting particle property schematic diagram.In addition to further including the ginseng for emitting particle comprising emitting how many a particles
Number, the transmitting attribute of particIe system can also include X-coordinate value and Y-coordinate value, emission rate, transmitting of the particle in transmitting position
Each attribute such as angle, transmitting range.
In concrete implementation, further, the transmitting attribute of particIe system can also include life, gravity, rotation, fortune
Dynamic range, least, visibility, color density, activity, angle, life change, quantity variation, size X variation, size Y become
Change, velocity variations, Gravity changer, the variation of rotationally-varying, motion range, least variation, size X, Life Cycle in life cycle
Size Y in phase, speed in life cycle, gravity in life cycle, rotation in life cycle, motion range and life in life cycle
Order rebound etc. in the period.Wherein two parameters of life and life change determine the time that particle is being undergone from generating to withering away.
Step 102, the N number of particIe system of creation, configure identical particle emission parameter for each particIe system.
When the transmitting position of particle is identical (by taking transmitting as an example, coordinate in space is (X, Y, Z)), particle is gone back preceding
Be rear, it is related to Z value.According to background technique, according to the setting of step 101, a particIe system emits multiple particles, each
The Z value of particle is identical, the particle effect generated after particle emission be newly generated particle be not up front, nor
Backmost, it be it is random, particle is disorderly and unsystematic.Can not accomplish particle emission be all emitted from foremost, or
It from what is emitted below, that is to say, according to the particle emission method in background technique, neat particle effect can not be generated
Figure.
It, first can be further according to the particle of selection after receiving the particIe system of selection in the embodiment of the present invention
Quantity, creation are equal to the multiple particles system of number of particles, and for the configuration of each particIe system and phase in step 101
Same particle emission parameter.Each particIe system emits a particle, to guarantee that the number of particles generated in total is constant.
Specifically, can be joined by calling particIe system function to configure identical particle emission for each particIe system
Number.
Step 103, N number of particIe system interval predetermined time emit particle one by one, when emitting particle, will currently send out
Radion is set as zero in the coordinate value of the direction of the launch, will emit particle and reduce in the coordinate position of the direction of the launch or increase in advance
If value.
Create N number of particIe system in a step 102, and for each particIe system setting emission parameter after, can be by N
A particle emission is gone out.In order to keep generating after particle emission neat particle effect picture, in the embodiment of the present invention, by N number of grain
The subsystem interval predetermined time emits particle one by one, i.e., N number of particIe system emits particle one by one, and a particIe system sends particle
Afterwards, emit particle after next particIe system separated in time again, also, when emitting each particle, by what is currently emitted
Particle is set as zero in the coordinate value of the direction of the launch, and the coordinate value by emitted particle in the direction of the launch is modified.
Specifically, be arranged particIe system transmitting attribute when, can by be further arranged particle it is neat in a manner of, the grain
Sub neat mode includes decaying in preceding and decaying rear, and decaying in the particle that preceding expression transmitter emits each time is upper primary
After the particle of transmitting position transmitting, user can be appreciated that particle moment wither away process, rather than create process., decline
Subtracting in the rear particle that emits each time of expression transmitter is that position before the upper particle once emitted emits, and user can see
The transients generated to particle, rather than the process withered away.
After receiving the neat mode of particle submitted by preset connection, Background scheduling particIe system function void
SetOrderZ (int curOrderZ, int numOrderZ, float OrderZFactor, bool bOldestInBack),
The relevant parameter for keeping particle neat is set.CurOrderZ indicates current particIe system in the rope of entire particIe system list
Drawing value, numOrderZ indicates that the particIe system sum in particIe system list, OrderZFactor indicate one step,
BOldestInBack indicates whether decaying rear.
It is then that user can see that every petal is created that the process come if created the process bloomed to decay for rear,
And to see that the process that petal withers is then the preceding effect of decaying.Fig. 4 a and Fig. 4 b give using the embodiment of the present invention
The effect picture of particle emission, the neat mode of particle are decaying rear, and it is from front one that comparison diagram 4a and Fig. 4 b, which can be seen that jewel,
One emits.
In the embodiment of the present invention, the step of coordinate position of the particle in the direction of the launch reduces or increase preset value will have been emitted
May include:
Sub-step S11, when the neat mode of the particle be decaying when preceding, particle will have been emitted in the coordinate of the direction of the launch
Position increases preset value；
Sub-step S12, when the neat mode of the particle be decaying when rear, particle will have been emitted in the coordinate of the direction of the launch
Position reduces preset value.
According to the setting of user, selection decaying during emitting current particle, can will emit particle and exist when preceding
The coordinate position of the direction of the launch increases preset value, for example, increasing one step；Selection decaying emits current particle when rear
In the process, it can will emit coordinate position of the particle in the direction of the launch and reduce preset value, for example, reduction one step.
According to the method for background technique, directlys adopt a particIe system and emit N number of particle, since multiple particles are emitting
The coordinate position (i.e. Z value) in direction be it is identical, the transmitting of particle is without sequence, and irregular, observer sees the grain launched
Son may before the picture show, it is also possible to shown since the centre of picture.According to an embodiment of the present invention, it can adjust
Whole multiple particles are in the effect of the direction of the launch, and to decay for preceding, the Z value of the particle generated increases preset value, newborn
At the position Z of particle be 0, in this way, the particle generated every time is emitted since the place remote away from observer, the hair of particle
Penetrating just has sequence, generates neat particle effect picture.Also, when preset value is unit step-length, due to the value very little of step-length,
It will not cause the change of other effects.
When emitting each particle, particIe system ParticleSystem is by calling at processOrderZ () on backstage
The function that reason keeps particle neat.
Specifically, processOrderZ () the realization process includes:
It is constant that current particle position Z=0, x and y are set, newParticle.position.z=0.
Particle position Z value in remaining particIe system of particIe system list is set are as follows: decaying adds when preceding
OrderZFactor value subtracts OrderZFactor value in decaying when rear.
Concrete implementation code is as follows:
According to the present invention, after the particIe system for receiving selection and for the transmitting attribute of particIe system setting, creation
The multiple particles system of equivalent number of particles, the transmitting of multiple particles system interval preset time, and in transmitting by sending out
The coordinate value for penetrating direction is set as zero, will emit coordinate position of the particle in the direction of the launch and has reduced or increase preset value, to adjust
Whole multiple particles the direction of the launch effect, to generate neat particle effect picture.
It should be noted that for the aforementioned method embodiment, for simple description, therefore, it is stated as a series of
Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the sequence of acts described, because according to
According to the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know that,
The embodiments described in the specification are all preferred embodiments, and related movement is not necessarily essential to the invention.
Based on the description of the above method embodiment, the present invention also provides the implementations of the time apparatus for correcting of corresponding 3D file
Example, to realize content described in above method embodiment.
Referring to Fig. 2, it illustrates a kind of structural block diagrams of particle emission device described in the embodiment of the present invention, specifically can wrap
It includes:
Attribute reception module 201, for receiving the particIe system of selection and for the transmitting category of particIe system setting
Property, the transmitting attribute includes number of particles N and particle emission parameter, and N is positive integer；
System creation module 202 configures identical particle for each particIe system and sends out for creating N number of particIe system
Penetrate parameter；
Particle emission module 203 emits particle for N number of particIe system interval predetermined time one by one, in transmitting grain
The period of the day from 11 p.m. to 1 a.m sets zero in the coordinate value of the direction of the launch for current transmitting particle, will emit particle in the coordinate bit of the direction of the launch
It sets reduction or increases preset value.
In the embodiment of the present invention, the transmitting attribute can also include the neat mode of particle, the neat mode packet of particle
Decaying is included in preceding and decaying rear.
In the embodiment of the present invention, the particle emission module may include:
The first adjustment submodule is used to when the neat mode of the particle be decaying when preceding, will emit particle and emitted
The coordinate position in direction increases preset value；
Second adjustment submodule is used to when the neat mode of the particle be decaying when rear, will emit particle and emitted
The coordinate position in direction reduces preset value.
In the embodiment of the present invention, by calling particIe system function to configure identical particle emission for each particIe system
Parameter.
In the embodiment of the present invention, each particIe system emits a particle；
The transmitting attribute of the particIe system further includes X-coordinate value and Y-coordinate value, transmitting speed of the particle in transmitting position
Degree, launch angle, transmitting range.
According to the present invention, after the particIe system for receiving selection and for the transmitting attribute of particIe system setting, creation
The multiple particles system of equivalent number of particles, the transmitting of multiple particles system interval preset time, and in transmitting by sending out
The coordinate value for penetrating direction is set as zero, will emit coordinate position of the particle in the direction of the launch and has reduced or increase preset value, to adjust
Whole multiple particles the direction of the launch effect, to generate neat particle effect picture.
For the embodiment of above-mentioned particle emission device, since it is basically similar to the method embodiment, so description
Fairly simple, the part explanation of related place embodiment of the method shown in Figure 1.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It would have readily occurred to a person skilled in the art that: any combination application of above-mentioned each embodiment is all feasible, therefore
Any combination between above-mentioned each embodiment is all embodiment of the present invention, but this specification exists as space is limited,
This is not just detailed one by one.
The present invention can be used in numerous general or special purpose computing system environments or configuration.Such as: personal computer, service
Device computer, handheld device or portable device, laptop device, multicomputer system, microprocessor-based system, top set
Box, programmable consumer-elcetronics devices, network PC, minicomputer, mainframe computer, including any of the above system or equipment
Distributed computing environment etc..
The present invention can describe in the general context of computer-executable instructions executed by a computer, such as program
Module.Generally, program module includes routines performing specific tasks or implementing specific abstract data types, programs, objects, group
Part, data structure etc..The present invention can also be practiced in a distributed computing environment, in these distributed computing environments, by
Task is executed by the connected remote processing devices of communication network.In a distributed computing environment, program module can be with
In the local and remote computer storage media including storage equipment.
In the present invention, " component ", " device ", " system " etc. refer to the related entities for being applied to computer, such as hardware, firmly
Combination, software or software in execution of part and software etc..In detail, for example, component can with but be not limited to run on place
Manage process, processor, object, executable component, execution thread, program and/or the computer of device.In addition, running on server
On application program or shell script, server can be component.One or more components can be in the process and/or line of execution
Cheng Zhong, and component can be localized and/or be distributed between two or multiple stage computers on one computer, and can be by
Various computer-readable medium operations.Component can also be according to the signal with one or more data packets, for example, coming from one
It is handed over component interaction another in local system, distributed system, and/or network in internet by signal and other systems
The signal of mutual data is communicated by locally and/or remotely process.
Finally, it is to be noted that, herein, the terms "include", "comprise" not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including described want
There is also other identical elements in the process, method, article or equipment of element.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Above to a kind of particle emission method and device provided by the present invention, it is described in detail, it is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand
Method and its core concept of the invention；At the same time, for those skilled in the art is having according to the thought of the present invention
There will be changes in body embodiment and application range, in conclusion the content of the present specification should not be construed as to the present invention
Limitation.
Claims (6)
1. a kind of particle emission method characterized by comprising
The particIe system of selection and the transmitting attribute for particIe system setting are received, the transmitting attribute includes population
It measures N and particle emission parameter, N is positive integer；
N number of particIe system is created, configures identical particle emission parameter for each particIe system；
N number of particIe system interval predetermined time emits particle one by one, when emitting particle, will currently emit particle and emit
The coordinate value in direction is set as zero, will emit coordinate position of the particle in the direction of the launch and has reduced or increase preset value；
The transmitting attribute further includes the neat mode of particle, the neat mode of particle include decaying in preceding and decaying rear, when
The neat mode of particle is decaying when preceding, will emit coordinate position of the particle in the direction of the launch and has increased preset value；Work as institute
Stating the neat mode of particle is decaying when rear, will emit coordinate position of the particle in the direction of the launch and has reduced preset value.
2. the method according to claim 1, wherein by calling particIe system function to be directed to each particIe system
Configure identical particle emission parameter.
3. the method according to claim 1, wherein each particIe system emits a particle；
The transmitting attribute of the particIe system further includes X-coordinate value and Y-coordinate value, emission rate, hair of the particle in transmitting position
Firing angle degree, transmitting range.
4. a kind of particle emission device characterized by comprising
Attribute reception module, it is described for receiving the particIe system of selection and for the transmitting attribute of particIe system setting
Emitting attribute includes number of particles N and particle emission parameter, and N is positive integer；
System creation module configures identical particle emission parameter for each particIe system for creating N number of particIe system；
Particle emission module emits particle for N number of particIe system interval predetermined time one by one, will when emitting particle
Current transmitting particle is set as zero in the coordinate value of the direction of the launch, will emit particle in the coordinate position reduction of the direction of the launch or
Increase preset value；
The transmitting attribute further includes the neat mode of particle, and the neat mode of particle includes decaying in preceding and decaying rear；
The particle emission module includes:
The first adjustment submodule is used to when the neat mode of the particle be decaying when preceding, will emit particle in the direction of the launch
Coordinate position increase preset value；
Second adjustment submodule is used to when the neat mode of the particle be decaying when rear, will emit particle in the direction of the launch
Coordinate position reduce preset value.
5. device according to claim 4, which is characterized in that by calling particIe system function to be directed to each particIe system
Configure identical particle emission parameter.
6. device according to claim 4, which is characterized in that each particIe system emits a particle；
The transmitting attribute of the particIe system further includes X-coordinate value and Y-coordinate value, emission rate, hair of the particle in transmitting position
Firing angle degree, transmitting range.
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