CN101576789B - Method for maintaining and modifying cross-screen writing stroke attributes in display wall positioning system - Google Patents
Method for maintaining and modifying cross-screen writing stroke attributes in display wall positioning system Download PDFInfo
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- CN101576789B CN101576789B CN2009100402780A CN200910040278A CN101576789B CN 101576789 B CN101576789 B CN 101576789B CN 2009100402780 A CN2009100402780 A CN 2009100402780A CN 200910040278 A CN200910040278 A CN 200910040278A CN 101576789 B CN101576789 B CN 101576789B
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Abstract
The invention relates to a method, which comprises: performing class encapsulation on each display unit of a display wall, and performing class encapsulation on lines drawn by a light pen each time; using data members to record general attributes such as stroke color, stroke thickness and the like of a certain display unit object in a display unit class, and arranging a line container inside the display unit to store the drawn lines; and judging the position of a coordinate point of a first stroke of a Chinese character first and then processing the stroke attribute according to the position of the coordinate point of the first stroke of the Chinese character under the condition of drawing a line from the first stroke of the Chinese character. The invention provides the method capable of supporting the arbitrary alteration of the attributes such as label and written stroke in a large-screen display wall system by people simultaneously. The invention not only can realize the maintenanceand alteration of the attributes such as the stroke color and the stroke thickness of lines on the current screen but also can realize the maintenance of the stroke attributes of the lines in the who le display wall positioning system under the condition of cross-screen writing and labeling.
Description
Technical field
The present invention relates to the combination field of locating technology, particularly a kind ofly support in the combination positioning system that many people write simultaneously that the attribute of stroke writing keeps and the change method between a plurality of screens.
Background technology
Along with giant-screen is pieced together the development of wall display technique, piecing together the wall location technology based on the large-scale interactive touch of piecing together wall display system has also had the development of advancing by leaps and bounds.Large-screen combination positioning system provides multiple application processing functions such as integrated information demonstration and mutual control for the user.
In the back location technology of existing large-screen splicing wall, can realize single-point location or multipoint positioning, promptly support many people on the assembly wall, to finish simultaneously and write the location.On hardware, only need to install a common camera additional, then it is connected on the PC, with serial ports as shown in Figure 1 in each display unit back of piecing together wall.In addition, as long as acquire an infrared fileter and infrared light emission pen again.Positioning principle is as follows: when infrared light pen is pressed on screen, and infrared light pen circuit turn-on, nib place emission infrared light.The infrared light that light pen sends is photographed by the camera that is in the screen back, and camera extracts the coordinate that spot center is determined the light pen position, then data such as light pen coordinate is sent on the PC.
In the large-screen interactive formula is used, can require to provide similar functions such as map label or electronic whiteboard usually, and require to support simultaneously multi-person labeling.Piece together wall in existing large scale and write, mark (such as 1 * 9 assembly wall) in the application system, if the operator who writes, marks on some screens wants to change the color or the thickness attribute of stroke, if adopt the mode of traditional menu or tool bar control, other marks person certainly will will be had influence on, and will go to the specific region of piecing together wall and remove click tools hurdle or menu, handle like this and not only lose time but also do not meet requirement of actual application with resource.Therefore, provide a kind of maintenance or the change method that can support many people in the large-screen splicing wall system, to write, mark simultaneously attributes such as stroke weight and color particularly important, particularly dispatch application functions such as mark, electronic whiteboard at the electronic chart of large-scale command centre.
Summary of the invention
The object of the invention provides between a kind of convenient and practical a plurality of assembly wall positioning units and strides maintenance and the change method that stroke property was write, marked to screen.Specifically, following 3 points are arranged:
Stroke property unanimity when 1, realizing striding screen, i.e. institute's lines of drawing unanimity about assembly wall seam;
2, intelligence continues line, promptly behind the lines of drawing a certain attribute, has changed the general stroke property in the current display unit, want again then to prolong above-mentioned lines, and maintenance and above-mentioned lines stroke property is consistent;
3, can change the attribute of each display unit stroke of combination simultaneously, make whole assembly wall stroke property reach consistent.
For achieving the above object, the present invention by the following technical solutions:
The hardware platform that this method realizes is a positioning system behind the combination of prior art, and as shown in Figure 1, each is pieced together wall display unit rear and places a camera, gathers and catch on the display screen coordinate of the infrared light spot that or many infrared light pens send.Realize that principle and mode are as follows:
In application software, each display unit of combination is encapsulated with class; And also encapsulate with class for the each lines of drawing of light pen.In the display unit class, write down attributes such as the general stroke color of a certain display unit object and thickness with data member.(attributes such as so-called general stroke color and thickness, be meant non-when striding screen lines or disconnected rat tail, the stroke property of using when drawing lines.) and in the lines class, also design has attributes such as the color of the concrete a certain lines of storage and thickness.
Generally speaking, attribute such as the color of the lines that produce during setting-out and thickness all is to be provided with according to the general stroke property of storing in this display unit object.If attributes such as the general stroke color of a certain display unit and thickness in the change combination, can not have influence on attributes such as the color of the vague generalization stroke in other display units and thickness.
If when striding the screen setting-out, will certainly produce disconnected pen at assembly wall seam crossing, and two lines that disconnected pen place produces belong to two display unit objects about seam, if do not handle, then above-mentioned two lines then can carry out lines respectively according to attributes such as the color of the vague generalization stroke of two display units about seam and thicknesses to be drawn, and this will certainly cause attributes such as the front and back color of lines and thickness inconsistent.Therefore, in order to keep the consistance of attributes such as stroke color and thickness, to handle striding attributes such as screen color of line and thickness, be consistent before and after making attributes such as the color of striding the screen lines and thickness, but can not have influence on attribute such as general lines and color in adjacent two display units.
In addition, we may repeatedly change the general stroke property of a certain display unit when writing or mark, thereby have multiple color on a certain display unit.Such as, we had before drawn lines azury in a certain display unit, we want again to continue to keep identical attributive character promptly to draw the lines of same pattern again near these lines then, but do not want to change general stroke property in this display unit.At this moment we also can take to stride the implementation method that the screen stroke property keeps, promptly differentiate automatically close on lines and pick up previous we drew the stroke property of those light blue lines, and continue to draw new lines as attribute temporarily with this attribute.
It is as follows to piece together the attribute maintenance and the change performing step of striding screen writing stroke in the wall positioning system:
A, display unit is encapsulated with class, and the member variable of storage vague generalization stroke property (attributes such as stroke color and thickness) is set;
B, lines are encapsulated, and the member variable (as color, the thickness of stroke, and these lines produce and the system time that finishes etc.) of storage lines attribute is set with class;
C, the lines container is set in display unit stores the lines of being drawn,, N lines container is set then if each display unit supports that N props up pen;
When d, first stroke of a Chinese character drafting lines, judge the position at first stroke of a Chinese character coordinate points place earlier, handle stroke property according to first stroke of a Chinese character coordinate points position again:
(i) if coordinate points near seam, and is to stride the screen setting-out, then according to the attribute of striding screen connection processing stroke;
When (ii) lines were drawn in the first stroke of a Chinese character, if coordinate points not at seam crossing, but has lines near the first stroke of a Chinese character, and the end points of first stroke of a Chinese character point off-line bar was approaching or partially overlap with a certain lines, then picked up the attribute that the closes on lines attribute as newly-built prolongation lines automatically;
If (iii) (i), (ii) 2 all be false, then handle, promptly when creating the lines object, with the general stroke property setting and the new attribute of creating lines of change of screen as common lines.
Among the described step a, attributes such as general stroke color and thickness, be meant non-striding when shielding lines or disconnected rat tail, the stroke property of using when drawing lines, each display unit can be provided with the vague generalization stroke property parameter that this general stroke property also can directly be duplicated adjacent display cell or be specified display unit separately, can reduce the trouble that each display unit all needs Reparametrization and selects the attribute result.
Among the described step c, because every infrared light pen all is the indifference pen, promptly their infrared lights of sending all are the same for camera, and camera can only be discerned one or more hot spots, specifically is that certain light pen sends and can not discern certain hot spot.So when attributes such as processing stroke color and thickness, adopt intelligent the processing, produce the lines object according to the class of lines described in the b, and these lines are stored in this N the lines container of setting, prepare against it is drawn demonstration in program, and will draw lines according to the time of record stroke attribute changes.
In steps d, we can get close on the certain number of pixels of seam judge whether for stride the screen write, the mark stroke, general light pen from seam within S (as 10) pixel, and the time that closes in the display unit system time that every lines produce and current first coordinate points that produces when striding the screen setting-out according to seam contrasts, if satisfy the mistiming in small range, for example the mistiming is less than T, and apart from seam within S pixel, think that then stroke strides screen trend, and generate and to stride the screen line, duplicate the stroke property of striding the previous display unit of screen and keep parameter to continue to write as the attribute of striding the screen line, the mark operation.
When lines are drawn in the first stroke of a Chinese character in the described steps d, if judge that coordinate points is not at seam crossing, but lines are arranged near the first stroke of a Chinese character, and the end points of first stroke of a Chinese character point off-line bar in M (as 3) pixel with interior or partially overlap with a certain lines, the attribute that then is judged as near lines or coincidence lines keeps demand, will pick up the attribute of the attribute of approaching or coincidence lines as newly-built prolongation lines automatically.
In the described steps d, when the change color attribute, can change the stroke property of each display unit respectively, promptly the operator of each display unit does not worry having influence on other operators' stroke property.The stroke property that can also change whole all display units of assembly wall simultaneously reaches the consistance of whole screen writing stroke attribute.
The invention described above is based on pieces together in the wall positioning system many people and writes, marks stroke property simultaneously and keep and the change method.Its beneficial effect is, provides a kind of and can support many people to change the attribute of mark, stroke writing simultaneously arbitrarily in the large-screen splicing wall system.Can realize keeping and change attributes such as the color of current screen lines stroke and thickness, can be implemented in again and stride in the whole assembly wall positioning system that screen is write, the maintenance of lines stroke property when marking.Particularly dispatch application functions such as mark, electronic whiteboard at the electronic chart of large-scale command centre.Realized that a kind of many people carry out the mark of man-machine interaction simultaneously, mode of operation and stroke property disposal route efficiently such as write.And lines attributes such as in-plant change mark, writing and drawing have satisfied the more and more demand of hommization.
Description of drawings
Fig. 1 is a cell schematics in the positioning system behind the combination of prior art;
The process flow diagram of stroke property method to set up during Fig. 2 be the many people of present embodiment in piecing together wall positioning system mark, writing and drawing;
Fig. 3 is that the present embodiment stroke property is provided with the dialog box synoptic diagram.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
It is example that present embodiment can recognize two infrared light pen dot systems simultaneously with each back positioning shooting head, and promptly a screen is supported 2 light pens.
Stroke property kept and the process flow diagram of change method when as shown in Figure 2, to be the many people of present embodiment strode screen mark, writing and drawing in piecing together wall positioning system.The detailed process step is as follows:
1, will piece together each display unit of wall encapsulates with class respectively, the stroke demand of writing, mark according to each display unit is provided with parameter values such as the stroke color of each display unit and thickness, and is stored as the member variable of attributes such as vague generalization stroke color and thickness;
2, with class lines are encapsulated, each display unit is supported 2 pens, 2 lines containers then is set stores the lines of being drawn;
When 3, lines are drawn in the first stroke of a Chinese character, judge the position at first stroke of a Chinese character coordinate points place earlier, if light pen drops near 10 pixels of seam, adjacent display cell detect also in 10 milliseconds that light pen is drawn information and near seam 10 pixels stride the screen setting-out with interior being judged as, then according to the attribute of striding screen connection processing stroke, the preceding stroke property parameter of screen is duplicated and assignment is given the lines property parameters of current drafting with striding;
4, write, be provided with when marking and the change color attribute at the non-screen of striding, can be provided with and change the stroke property of each display unit respectively, promptly the operator of each display unit does not worry having influence on other operators' stroke property.Can also reach the consistance that stroke property was write, marked to whole screen by specifying display unit to send the stroke property that a special command forces to be provided with and to change whole all display units of assembly wall simultaneously such as first display unit.
Stroke property method to set up of the present invention can realize keeping the color and the thickness of current screen lines stroke constant, can be implemented in again in the whole combination scope when striding the screen mark, keeping initial lines stroke property until finishing when time marking, writing when writing.
The user can use light pen analog mouse right button to operate the change setting that enters stroke property on each unit of assembly wall, as shown in Figure 3.
Specific implementation principle and mode are as follows:
When the long-time original place of light pen touches, the analog mouse right button, attributes such as ejection stroke color are provided with dialog box, and only the line color and the thickness of current screen are changed, such as in 1 * 3 assembly wall, if in second display screen, click out properties dialog with light pen, then only the line color and the thickness of second screen are changed, then remain unchanged at first and the 3rd screen.If there is the situation of striding screen, the lines of then striding screen are consistent, and do not influence the attribute of other original in this screen stroke.Hit operation owing to considering that properties dialog will be given me a little with light pen, so the indication range of properties dialog can not exceed a certain display unit, the indication range that can simulate right button is less than display unit.
1, light pen is pressed for a long time, and the analog mouse right button ejects and shows the stroke properties dialog:
A. light pen is pressed, the register system time;
B. the light pen sustained touch keeps coordinate position motionless, continues 2 seconds;
C. light pen lifts, and shows the stroke properties dialog.And the lines attribute of current screen is provided with state is the drafting of forbidding the current screen lines.
2, light pen is clicked screen, if the light pen position is the position of a certain option in the stroke property frame, accordingly the attribute of two stroke lines in this screen is changed accordingly;
3, if light pen is clicked " OK " key in the properties dialog, confirm to be provided with and close box, if light pen is clicked " Cancel " button, then abandon setting just now, close box.And the lines attribute is provided with state is changed to the drafting that recovers the current screen lines.
4,, then create the lines object according to the stroke property in the current screen if not simulating right button is provided with the stroke property demand.
5, when striding the drafting of screen connection mark, the lines attribute current according to the attribute record of connecting line in the previous screen is provided with, when light pen is striden the screen continuous marking, extracted the attribute that the lines attribute assignment that writes down in the previous screen is given the lines of current new establishment when writing, but do not change the attribute of other original strokes in the current screen, the color and the thickness of only just striding the lines that shield connection and create that change, it is consistent with the thickness attribute promptly only to keep striding the color of shielding line, and does not influence the non-attribute of screen line in current display unit of striding.
Above-described embodiment of the present invention does not constitute the qualification to protection domain of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (5)
1. maintenance of piecing together to stride the screen writing stroke attribute in the wall positioning system and change method is characterized in that it may further comprise the steps:
A, display unit is encapsulated with class, and the member variable of storage vague generalization stroke property is set;
B, lines are encapsulated, and the member variable of storage lines attribute is set with class;
C, the lines container is set in display unit stores the lines of being drawn;
When d, first stroke of a Chinese character drafting lines, judge the position at first stroke of a Chinese character coordinate points place earlier, handle stroke property according to first stroke of a Chinese character coordinate points position again:
(i) if coordinate points near seam, and is to stride the screen setting-out,, duplicates the stroke property of striding the previous display unit of screen and keep parameter to continue to write, mark operation as the attribute of striding the screen line then according to the attribute of striding screen connection processing stroke;
When (ii) lines were drawn in the first stroke of a Chinese character, if coordinate points not at seam crossing, but has lines near the first stroke of a Chinese character, and the end points of first stroke of a Chinese character point off-line bar was approaching or partially overlap with a certain lines, then picked up the attribute that the closes on lines attribute as newly-built prolongation lines automatically;
(iii) above-mentioned if (i), (ii) 2 all be false, then handle, promptly when creating the lines object, with the general stroke property setting and the new attribute of creating lines of change of screen as common lines.
2. stride the maintenance and the change method of screen writing stroke attribute in the assembly wall positioning system as claimed in claim 1, it is characterized in that, in step a, each display unit is provided with the vague generalization stroke property separately, perhaps directly duplicates the vague generalization stroke property parameter of adjacent display cell or appointment display unit.
3. stride the maintenance and the change method of screen writing stroke attribute in the assembly wall positioning system as claimed in claim 1, it is characterized in that, in step c, produce the lines object according to the class of lines described in the b, and with these lines object storage in the lines container, in order to it is drawn demonstration in program.
4. stride the maintenance and the change method of screen writing stroke attribute in the assembly wall positioning system as claimed in claim 1, it is characterized in that, in steps d, when if lines are drawn in the first stroke of a Chinese character coordinate points from seam in S pixel, and seam is closed on every system time and current time contrast of striding first coordinate points that produces when shielding setting-out that lines produce in the display unit, mistiming is less than T, think that then stroke strides screen trend, and generate and to stride the screen line, duplicate the stroke property of striding the previous display unit of screen and keep parameter to continue to write, mark operation as the attribute of striding the screen line.
5. stride the maintenance and the change method of screen writing stroke attribute in the assembly wall positioning system as claimed in claim 1, it is characterized in that, in steps d, if coordinate points was not at seam crossing when lines were drawn in the first stroke of a Chinese character, but lines are arranged near the first stroke of a Chinese character, and the end points of first stroke of a Chinese character point off-line bar, then is judged as near lines or the attribute that overlaps lines and keeps demand with interior or partially overlap with a certain lines M pixel, will pick up automatically near or overlap the attribute of the attribute of lines as newly-built prolongation lines.
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| CN101576789A (en) | 2009-11-11 |
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