CN112116678A - Irregular virtual pointer display method for liquid crystal instrument and liquid crystal instrument - Google Patents
Irregular virtual pointer display method for liquid crystal instrument and liquid crystal instrument Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000001788 irregular Effects 0.000 title claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 22
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T13/00—Animation
- G06T13/80—2D [Two Dimensional] animation, e.g. using sprites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/206—Drawing of charts or graphs
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Abstract
The invention provides an irregular virtual pointer display method of a liquid crystal instrument and the liquid crystal instrument, the method comprises the following steps: acquiring a pre-display range of instrument data, and determining a rotation angle corresponding to an instrument pointer according to a UI (user interface) design effect of an instrument; establishing a first table based on the corresponding relation between the pre-display numerical value and the instrument pointer angle in the instrument data pre-display range; establishing a second table based on the corresponding relation between the instrument pointer angle and the pointer picture; and calculating animation drawing times between the pre-displayed numerical value and the current value, and after starting animation drawing, sequentially displaying the pointer pictures within the animation drawing times according to the corresponding relations of the pre-displayed numerical value, the instrument pointer angle and the pointer pictures in the first table and the second table. Based on the scheme, the accurate display of the instrument pointer on the instrument panels in different shapes can be realized, the dynamic display effect of the liquid crystal instrument pointer is improved, and the user experience is improved.
Description
Technical Field
The invention relates to the field of automobile instruments, in particular to a method for displaying an irregular virtual pointer of a liquid crystal instrument and the liquid crystal instrument.
Background
Compared with the pure physical structure of the traditional instrument, the liquid crystal instrument has various display styles, and the display data is easy to change and is widely applied to automobile instruments. With the development of liquid crystal instrument technology, higher requirements are provided for display content and display effect, and the display effect of the traditional mechanical pointer rotating around the circle center is difficult to meet the requirements of consumers.
The current liquid crystal instrument shows, adopts the rotatory refresh of fixed picture to realize the pointer and rotates, to multiple shape dials such as non-circular dial plate, because the rotation angle of scale and pointer on the panel board is nonlinear, and pointer length needs to change, if adopt conventional display method, the instrument shows that the precision is on the low side, and the picture display effect is relatively poor.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method for displaying an irregular virtual pointer of a liquid crystal instrument and a liquid crystal instrument, so as to solve the problems of low instrument display accuracy and poor display effect.
In a first aspect of the embodiments of the present invention, a method for displaying an irregular virtual pointer of a liquid crystal instrument is provided, including:
acquiring a pre-display range of instrument data, and determining a rotation angle corresponding to an instrument pointer according to a UI (user interface) design effect of an instrument;
establishing a first table based on the corresponding relation between the pre-display numerical value and the instrument pointer angle in the instrument data pre-display range;
establishing a second table based on the corresponding relation between the instrument pointer angle and the pointer picture;
and calculating animation drawing times between the pre-displayed numerical value and the current value, and after starting animation drawing, sequentially displaying the pointer pictures within the animation drawing times according to the corresponding relations of the pre-displayed numerical value, the instrument pointer angle and the pointer pictures in the first table and the second table.
In a second aspect of the embodiments of the present invention, there is provided a liquid crystal instrument, including:
the acquisition module is used for acquiring the instrument data pre-display range and determining the rotation angle corresponding to the instrument pointer according to the instrument interface UI design effect;
the first table generation module is used for establishing a first table based on the corresponding relation between the pre-display numerical value in the pre-display range of the instrument data and the angle of the instrument pointer;
the second table generation module is used for establishing a second table based on the corresponding relation between the instrument pointer angle and the pointer picture;
and the display module is used for calculating animation drawing times between the pre-displayed numerical value and the current value, and sequentially displaying the pointer pictures within the animation drawing times according to the corresponding relations of the pre-displayed numerical value, the instrument pointer angle and the pointer picture in the first table and the second table after animation drawing is started.
In the embodiment of the invention, after the pre-display range of the instrument data and the rotation angle corresponding to the instrument pointer are determined, the table is established, the corresponding relation among the pre-display numerical value, the angle of the instrument pointer and the pointer picture is determined, and the corresponding pointer picture is obtained for display when animation drawing is carried out, so that the problems of low instrument display precision and poor display effect are solved, the accurate display of the instrument pointer on instrument panels in different shapes can be ensured, meanwhile, the size of the pointer can be adaptively changed, the rotation animation effect is realized, the display effect of the liquid crystal instrument can be effectively improved, and the user experience is improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for displaying an irregular virtual pointer of a liquid crystal instrument according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an effect of an irregular virtual pointer display of a liquid crystal instrument according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a liquid crystal instrument according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons skilled in the art without any inventive work shall fall within the protection scope of the present invention, and the principle and features of the present invention shall be described below with reference to the accompanying drawings.
The terms "comprises" and "comprising," when used in this specification and claims, and in the accompanying drawings and figures, are intended to cover non-exclusive inclusions, such that a process, method or system, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for displaying an irregular virtual pointer of a liquid crystal instrument according to an embodiment of the present invention, including:
as shown in fig. 2, for a non-circular instrument panel, when the instrument panel is an oval, when the values displayed by the instrument are 0, 45 and 90 respectively, although the same values are added, the lengths of the pointers a, b and c are different, and the value of × 1 is not equal to × 2, since the scales on the instrument panel and the pointer rotation angle are non-linear and can not be calculated, the pointer length can be changed in order to accurately point to the scales, and it is necessary to determine the correspondence between the pointer rotation and the instrument panel scales.
S101, acquiring a pre-display range of instrument data, and determining a rotation angle corresponding to an instrument pointer according to a UI design effect of an instrument interface;
and determining a pre-display range of the meter data, wherein the display range of the data is [ n, m ], n is the minimum value, m is the maximum value, delta t is the time interval of minimum refreshing or drawing of the animation, and delta v is the minimum display precision of the meter numerical value.
And determining the actual rotation angle of the pointer according to the UI design effect, setting the starting angle of the pointer as arcS and the ending angle of the pointer as arcE.
S102, establishing a first table based on the corresponding relation between the pre-display numerical value in the pre-display range of the instrument data and the angle of an instrument pointer;
since the pointer rotation angle cannot be obtained by calculation, the pointer angle corresponding to each display value can be obtained by searching data.
Illustratively, the pointer angle for each desired display value between m and n is determined to form a table Arc [ num ], such as: arc [ n ] ═ arcS, Arc [ n + Δ v ] ═ arcS +0.5, Arc [ n +2 Δ v ] ═ arcS +0.7, …, and Arc [ m ] ═ arcE.
Where, Arc [ num ] represents the first table, Arc [ num ] may represent Arc [ n + i Δ v ] ═ arcS + a, n is the minimum value in the data display range, i represents the number of frames, Δ v represents the minimum display accuracy of the meter value, arcS is the pointer start angle, a is the angle increment, where n + i Δ v is not more than m, and arcS + a is not more than arcE.
S103, establishing a second table based on the corresponding relation between the instrument pointer angle and the pointer picture;
when actually displaying, the picture displayed by the pointer is related to the pointing angle of the pointer, and a table IMG [ arc ] is formed according to the pointer angle corresponding to different pointer pictures, such as: IMG [ arcS ] ═ image1, IMG [ arcS +0.5] ═ image2, …, and IMG [ arcE ] ═ image n.
Where IMG [ arc ] represents the second table, IMG [ arc ] may represent IMG [ arcS + a ] ═ imagei, arcS is the pointer start angle, a is the angle increment, i represents the metering parameter, i is 1,2,3 …, N.
And S104, calculating animation drawing times between the pre-displayed numerical value and the current value, and after animation drawing is started, sequentially displaying the pointer pictures within the animation drawing times according to the corresponding relations of the pre-displayed numerical value, the instrument pointer angle and the pointer picture in the first table and the second table.
Specifically, the number of times of animation drawing between the pre-displayed value and the current value is calculated according to the following formula: count ═ (nextV-currentV)/Δ v;
wherein, Count represents the animation drawing times, currentV represents the current value, nextV represents the pre-display value, and Δ v represents the minimum display precision of the meter value.
Specifically, animation drawing is started, the frameCnt is set as the current frame number, the animation process is driven by the continuous increase of the frameCnt, and the ratio of the frameCnt: initial value: 0 end value: count.
Setting the time of each interval delta t of the liquid crystal instrument to draw the instrument pointer;
calculating the meter value to be displayed in the pre-display frame: vtmp ═ currentV + frameCnt Δ v;
determining the pointer angle needing to be displayed according to the pointer angle of the instrument corresponding to the numerical value needing to be displayed in the first table: armarc ═ Arc [ vtmp ];
determining the pointer picture to be displayed according to the pointer picture corresponding to the instrument pointer angle to be displayed in the second table: imimg ═ IMG [ airarc ];
displaying the effect of the pointer after the rotation angle airmar based on the display of the current pointer picture and the pointer picture aimImg to be displayed;
where vtmp represents an instrument value to be displayed, airarc represents a pointer angle to be displayed, aimImg represents a pointer picture to be displayed, currentV represents a current value, framecnt represents a current frame number, Δ v represents a minimum display precision of the instrument value, Arc [ vtmp ] represents a pointer angle corresponding to vtmp in the first table, and IMG [ airarc ] represents a pointer angle corresponding to airarc in the second table.
Based on the method provided by the embodiment of the invention, the instrument display precision can be improved, the dynamic animation display effect is realized, and the user experience is ensured.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 3 is a schematic structural diagram of a liquid crystal instrument provided in an embodiment of the present invention, where the instrument includes:
the obtaining module 310 is configured to obtain a pre-display range of meter data, and determine a rotation angle corresponding to a meter pointer according to a UI design effect of a meter interface;
the first table generating module 320 is configured to establish a first table based on a corresponding relationship between a pre-display numerical value and an instrument pointer angle in an instrument data pre-display range;
the second table generating module 330 is configured to establish a second table based on a corresponding relationship between the meter pointer angle and the pointer picture;
and the display module 340 is configured to calculate animation drawing times between the pre-displayed numerical value and the current value, and after animation drawing is started, sequentially display the pointer pictures within the animation drawing times according to the corresponding relationship between the pre-displayed numerical value, the meter pointer angle, and the pointer picture in the first table and the second table.
Specifically, the number of times of animation drawing between the pre-displayed value and the current value is calculated according to the following formula: count ═ (nextV-currentV)/Δ v;
wherein, Count represents the animation drawing times, currentV represents the current value, nextV represents the pre-display value, and Δ v represents the minimum display precision of the meter value.
Optionally, the display module 340 includes:
the setting unit is used for setting the time of each interval delta t of the liquid crystal instrument to draw the instrument pointer;
the calculation unit is used for calculating the meter value required to be displayed by the pre-display frame: vtmp ═ currentV + frameCnt Δ v;
the first determining unit is used for determining the pointer angle needing to be displayed according to the pointer angle of the instrument corresponding to the numerical value needing to be displayed in the first table: armarc ═ Arc [ vtmp ];
the second determining unit is used for determining the pointer picture to be displayed according to the pointer picture corresponding to the instrument pointer angle to be displayed in the second table: imimg ═ IMG [ airarc ];
the display unit displays the effect of the pointer after the rotation angle airmar based on the display of the current pointer picture and the pointer picture aimImg to be displayed;
where vtmp represents an instrument value to be displayed, airarc represents a pointer angle to be displayed, aimImg represents a pointer picture to be displayed, currentV represents a current value, framecnt represents a current frame number, Δ v represents a minimum display precision of the instrument value, Arc [ vtmp ] represents a pointer angle corresponding to vtmp in the first table, and IMG [ airarc ] represents a pointer angle corresponding to airarc in the second table.
It will be appreciated by those of ordinary skill in the art that in one embodiment, the liquid crystal meter comprises a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing steps S101 to S104 when executing the computer program to implement the display of an irregular virtual pointer on the meter. In another embodiment, the computer program may also be stored in a computer readable storage medium, such as a flash memory.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. An irregular virtual pointer display method for a liquid crystal instrument comprises the following steps:
acquiring a pre-display range of instrument data, and determining a rotation angle corresponding to an instrument pointer according to a UI (user interface) design effect of an instrument;
establishing a first table based on the corresponding relation between the pre-display numerical value and the instrument pointer angle in the instrument data pre-display range;
establishing a second table based on the corresponding relation between the instrument pointer angle and the pointer picture;
and calculating animation drawing times between the pre-displayed numerical value and the current value, and after starting animation drawing, sequentially displaying the pointer pictures within the animation drawing times according to the corresponding relations of the pre-displayed numerical value, the instrument pointer angle and the pointer pictures in the first table and the second table.
2. The system according to claim 1, wherein the calculating the number of animation drawing times between the pre-displayed value and the current value is specifically:
calculating the animation drawing times between the pre-display value and the current value according to the following formula:
Count＝(nextV-currentV)/Δv；
wherein, Count represents the animation drawing times, currentV represents the current value, nextV represents the pre-display value, and Δ v represents the minimum display precision of the meter value.
3. The system according to claim 1, wherein the sequentially displaying the pointer pictures within the animation drawing times according to the corresponding relationship between the pre-displayed numerical values, the instrument pointer angles and the pointer pictures in the first table and the second table comprises:
setting the time of each interval delta t of the liquid crystal instrument to draw the instrument pointer;
calculating the meter value to be displayed in the pre-display frame: vtmp ═ currentV + frameCnt Δ v;
determining the pointer angle needing to be displayed according to the pointer angle of the instrument corresponding to the numerical value needing to be displayed in the first table: armarc ═ Arc [ vtmp ];
determining the pointer picture to be displayed according to the pointer picture corresponding to the instrument pointer angle to be displayed in the second table: imimg ═ IMG [ airarc ];
displaying the effect of the pointer after the rotation angle airmar based on the display of the current pointer picture and the pointer picture aimImg to be displayed;
where vtmp represents an instrument value to be displayed, airarc represents a pointer angle to be displayed, aimImg represents a pointer picture to be displayed, currentV represents a current value, framecnt represents a current frame number, Δ v represents a minimum display precision of the instrument value, Arc [ vtmp ] represents a pointer angle corresponding to vtmp in the first table, and IMG [ airarc ] represents a pointer angle corresponding to airarc in the second table.
4. A liquid crystal instrument comprising:
the acquisition module is used for acquiring the instrument data pre-display range and determining the rotation angle corresponding to the instrument pointer according to the instrument interface UI design effect;
the first table generation module is used for establishing a first table based on the corresponding relation between the pre-display numerical value in the pre-display range of the instrument data and the angle of the instrument pointer;
the second table generation module is used for establishing a second table based on the corresponding relation between the instrument pointer angle and the pointer picture;
and the display module is used for calculating animation drawing times between the pre-displayed numerical value and the current value, and sequentially displaying the pointer pictures within the animation drawing times according to the corresponding relations of the pre-displayed numerical value, the instrument pointer angle and the pointer picture in the first table and the second table after animation drawing is started.
5. The liquid crystal meter according to claim 4, wherein the calculating the number of animation drawing between the pre-displayed value and the current value is specifically:
calculating the animation drawing times between the pre-display value and the current value according to the following formula:
Count＝(nextV-currentV)/Δv；
wherein, Count represents the animation drawing times, currentV represents the current value, nextV represents the pre-display value, and Δ v represents the minimum display precision of the meter value.
6. The liquid crystal meter of claim 4, wherein the display module comprises:
the setting unit is used for setting the time of each interval delta t of the liquid crystal instrument to draw the instrument pointer;
the calculation unit is used for calculating the meter value required to be displayed by the pre-display frame: vtmp ═ currentV + frameCnt Δ v;
the first determining unit is used for determining the pointer angle needing to be displayed according to the pointer angle of the instrument corresponding to the numerical value needing to be displayed in the first table: armarc ═ Arc [ vtmp ];
the second determining unit is used for determining the pointer picture to be displayed according to the pointer picture corresponding to the instrument pointer angle to be displayed in the second table: imimg ═ IMG [ airarc ];
the display unit displays the effect of the pointer after the rotation angle airmar based on the display of the current pointer picture and the pointer picture aimImg to be displayed;
where vtmp represents an instrument value to be displayed, airarc represents a pointer angle to be displayed, aimImg represents a pointer picture to be displayed, currentV represents a current value, framecnt represents a current frame number, Δ v represents a minimum display precision of the instrument value, Arc [ vtmp ] represents a pointer angle corresponding to vtmp in the first table, and IMG [ airarc ] represents a pointer angle corresponding to airarc in the second table.
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| CN113525082A (en) * | 2021-06-27 | 2021-10-22 | 东风电驱动系统有限公司 | Method and device for planning motion of virtual pointer of full liquid crystal instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113525082A (en) * | 2021-06-27 | 2021-10-22 | 东风电驱动系统有限公司 | Method and device for planning motion of virtual pointer of full liquid crystal instrument |
| CN113525082B (en) * | 2021-06-27 | 2022-07-15 | 东风电驱动系统有限公司 | Method and device for planning motion of virtual pointer of all-liquid crystal instrument |
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