CN113504882B - Multi-system multi-region display method - Google Patents
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- CN113504882B CN113504882B CN202110478705.4A CN202110478705A CN113504882B CN 113504882 B CN113504882 B CN 113504882B CN 202110478705 A CN202110478705 A CN 202110478705A CN 113504882 B CN113504882 B CN 113504882B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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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
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/29—Instruments characterised by the way in which information is handled, e.g. showing information on plural displays or prioritising information according to driving conditions
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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
- B60K37/00—Dashboards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use 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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- 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
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/18—Information management
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- Combustion & Propulsion (AREA)
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Abstract
The invention provides a multi-system multi-area display method, which comprises the following steps: step 1, loading a display template, and creating a display area object according to the display template; step 2, storing the display area objects into a linked list in sequence; step 3, receiving display content of each display area, traversing the linked list, and drawing each display area through a frame buffer area; step 4, refreshing each display area drawn by the frame buffer area to a display for display; step 5, judging whether the display area updating operation is detected, if so, entering the next step; and step 6, updating the display area according to a preset rule. The invention realizes the free customization of multi-system multi-region display.
Description
Technical Field
The invention relates to the technical field of display, in particular to a multi-system multi-region display method.
Background
Along with the development of automobile intellectualization, vehicle-mounted equipment for running multiple systems (such as QNX+android) is becoming mainstream gradually, so that the large-screen and intelligent development of digital instruments and central control systems is vigorous, and various display modes are developed, namely multi-screen display and partitioned display on a large screen.
Different types of information are displayed on a large screen in a partitioned mode, wherein the information includes security domain information such as meters and multimedia entertainment related information. Different types of information display implementation require different operating systems, for example, meter related functions and information require QNX operating systems to implement, and multimedia entertainment related contents and information require Android operating systems to implement.
However, the display area dividing mode of the large-screen partition display is generally preset by a system, and cannot be increased, reduced, enlarged or reduced by a user, so that free customized experience cannot be brought to the user.
Accordingly, there is a need for further improvements in the art.
Disclosure of Invention
The invention provides a multi-system multi-region display method, which aims to overcome the defects in the prior art and realize free customization of multi-system multi-region display.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides a multi-system multi-area display method, which comprises the following steps:
step 1, loading a display template, and creating a display area object according to the display template;
step 2, storing the display area objects into a linked list in sequence;
step 3, receiving display content of each display area, traversing the linked list, and drawing each display area through a frame buffer area;
step 4, refreshing each display area drawn by the frame buffer area to a display for display;
step 5, judging whether the display area updating operation is detected, if so, entering the next step;
and step 6, updating the display area according to a preset rule.
Specifically, the step 6 includes:
step 601, if the operation of splitting the display area is detected, performing the operation according to a first preset rule;
step 602, if the operation of merging the display areas is detected, performing the operation according to a second preset rule;
step 603, if the operation of moving the display area is detected, the operation is performed according to a third preset rule.
Specifically, the first preset rule is:
a1, acquiring a serial number of a selected display area, and acquiring each vertex coordinate of a corresponding display area;
a2, calculating starting point coordinates and ending coordinates of each vertex of the two sub-areas after splitting according to the splitting direction;
a3, updating coordinates of each vertex of the selected area;
step A5, creating a new display area object;
and step A6, updating the linked list according to the new display area object, and returning to the step 3.
Specifically, the second preset rule is:
step B1, acquiring a serial number of a selected display area, and acquiring each vertex coordinate of a corresponding display area;
step B2, calculating the coordinates of each vertex of a final display area formed by the selected display areas;
step B3, judging whether the final display area is rectangular, if so, entering the next step, otherwise prompting that the combination cannot be performed;
step B4, modifying the vertex coordinates of the selected first display area into the vertex coordinates of the final display area;
and B5, deleting other display areas except the first display area in the selected display areas from the linked list, updating the display area serial number, and returning to the step 3.
Specifically, the third preset rule is:
step C1, acquiring coordinate values of an initial moving point, and judging a display area to which the initial moving point belongs;
step C2, obtaining vertical distances between the initial moving point and four sides of the display area to which the initial moving point belongs, and taking a projection point corresponding to the shorter one of the vertical distances as a datum point to be determined;
step C3, acquiring a moving direction, and taking a pending datum point which is the same as the moving direction as a final datum point;
step C4, generating a datum line orthogonal to the moving direction through the final datum point;
step C5, determining a display area to be adjusted, wherein the adjustment display area is an adjacent and connected display area overlapped with the datum line;
step C6, obtaining the movement amount of the display area;
and C7, determining the coordinates of the display area to be adjusted according to the moving direction and the moving amount.
Specifically, the step C7 includes: if the moving direction is vertical, the ordinate increasing amount of each vertex of the display area to be adjusted on the same side of the moving direction is a moving amount, and the abscissa is kept unchanged; if the moving direction is horizontal, the abscissa of each vertex of the display area to be adjusted on the same side of the moving direction is the moving amount, and the ordinate is kept unchanged.
Further, after the step 5, the method further comprises:
step 51, judging the entering direction of the updating operation, if the updating operation enters from the preset direction, entering the next step, otherwise, entering the step 6;
step 52, obtaining the current road condition level, judging whether the current road condition level belongs to the safety level, if yes, entering the next step, otherwise, sending out prompt information for prohibiting the user operation.
Specifically, the step 52 includes:
step 52-1, defining a current road condition level, the current road condition level
R=k1×w1+k2×w2+k3×w3, where W1 represents a first parameter of surrounding vehicles related to the host vehicle, W2 represents a second parameter of surrounding pedestrians related to the host vehicle, W3 represents a third parameter of surrounding traffic settings related to the host vehicle, and K1, K2, K3 represent corresponding first, second, and third factors of the first, second, and third parameters, respectively;
52-2, detecting whether a vehicle is in front of the lane, if yes, setting the first factor K1 to 1 and entering the next step, otherwise, setting the first factor K1 to 0;
52-3, obtaining the distance between the vehicle and the front vehicle and the relative vehicle speed, and calculating a first collision time tc1;
step 52-4, determining a first parameter W1;
52-5, detecting whether a pedestrian exists in front of the vehicle, if yes, setting the second factor K2 to be 1 and entering the next step, otherwise, setting the second factor K2 to be 0;
52-6, obtaining the distance between the vehicle and the pedestrian and the relative vehicle speed, and calculating a second collision time tc2;
56-7, determining a second parameter W2;
52-8, detecting whether a traffic light exists in front of the host vehicle, if so, setting the third factor K3 to be 1 and entering the next step, otherwise, setting the third factor K3 to be 0;
52-9, obtaining the current speed of the vehicle and the distance between the current speed and the traffic light, and calculating the probability P (%) of running the red light;
52-10, determining a third parameter W3;
step 52-11, determining the current road condition level R, judging whether R is larger than a road condition threshold value R0, if yes, judging that the current road condition level belongs to a dangerous level, and if not, judging that the current road condition level belongs to a safety level.
Specifically, the first parameter w1=tr/tc 1, where tr is the reaction time.
Specifically, the second parameter w2=tr/tc 2, where tr is the reaction time.
Specifically, the third parameter w3=p/P0, where P0 represents a reference probability.
The invention has the beneficial effects that: the invention creates the display area object according to the display template, stores the display area object into the linked list, receives the display content of each display area, traverses the linked list, draws each display area through the frame buffer area to refresh the display, and updates the display area according to the update operation of the display area by the user, thereby realizing the free customization of multi-system multi-area display.
Drawings
FIG. 1 is a flow chart of a multi-system multi-region display method of the present invention;
fig. 2 is a schematic diagram of the pending fiducial of the present invention.
Detailed Description
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which are for reference and illustration only, and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the present embodiment provides a multi-system multi-area display method, including:
step 1, loading a display template, and creating a display area object according to the display template.
In this embodiment, the display template includes the number, the start coordinate, the end coordinate, and the operating system to which each display area belongs.
For convenience of description, the display area in this embodiment is rectangular, and the non-rectangular display area processing method is similar to that of the rectangular display area.
And step 2, sequentially storing the display area objects into a linked list.
A linked list is a non-continuous, non-sequential storage structure on physical storage units, consisting of a series of nodes, the logical order of data elements being achieved by the order of pointer links in the linked list.
In this embodiment, the numbers of the objects in the display areas are all nodes in the linked list.
And step 3, receiving the display content of each display area, traversing the linked list, and drawing each display area through a frame buffer area.
The frame buffer area is a two-dimensional array formed by pixels and comprises color buffer, depth buffer, template buffer and accumulation buffer; each memory cell corresponds to a pixel on the screen and the entire frame buffer corresponds to a frame of image.
In this embodiment, the display contents of the display areas are output by different systems according to actual needs. For example, meter rotation speed information provided by the QNX system is displayed in the display area 1, and song information provided by the android system is displayed in the display area 2.
And 4, refreshing each display area drawn by the frame buffer area to a display for display.
And 5, judging whether the display area updating operation is detected, and if so, entering the next step.
And step 6, updating the display area according to a preset rule.
In this embodiment, the step 6 includes:
step 601, if the operation of splitting the display area is detected, the operation is performed according to a first preset rule.
In this embodiment, the first preset rule is:
a1, acquiring a serial number of a selected display area, and acquiring each vertex coordinate of a corresponding display area;
a2, calculating starting point coordinates and ending coordinates of each vertex of the two sub-areas after splitting according to the splitting direction;
a3, updating coordinates of each vertex of the selected area;
step A5, creating a new display area object;
and step A6, updating the linked list according to the new display area object, and returning to the step 3.
In this embodiment, the splitting direction includes a transverse direction and a longitudinal direction.
Step 602, if the operation of merging the display areas is detected, the operation is performed according to a second preset rule.
In this embodiment, the second preset rule is:
step B1, acquiring a serial number of a selected display area, and acquiring each vertex coordinate of a corresponding display area;
step B2, calculating the coordinates of each vertex of a final display area formed by the selected display areas;
step B3, judging whether the final display area is rectangular, if so, entering the next step, otherwise prompting that the combination cannot be performed;
step B4, modifying the vertex coordinates of the selected first display area into the vertex coordinates of the final display area;
and B5, deleting other display areas except the first display area in the selected display areas from the linked list, updating the display area serial number, and returning to the step 3.
Step 603, if the operation of moving the display area is detected, the operation is performed according to a third preset rule.
In this embodiment, the third preset rule is:
and C1, acquiring coordinate values of the initial moving point, and judging a display area to which the initial moving point belongs.
And C2, obtaining the vertical distance between the initial moving point and the four sides of the display area to which the initial moving point belongs, and taking the projection point corresponding to the shorter vertical distance as a to-be-determined reference point.
As shown in fig. 2, the point M is a starting moving point, the number of the display area is 2, the vertices are P1, P2, P3, and P4, and vertical projections are made from the point M to the sides P1P2, P2P3, P3P4, and P4P1 to obtain projection points N1, N2, N3, and N4, wherein N1 and N3 are vertical projection points, N2, and N4 are horizontal projection points, and the distances between the projection points and the point M are l1, l2, l3, and l4, wherein l1 < l3, and l4 < l2, and then N1 and N4 are respectively used as the vertical undetermined reference point and the horizontal undetermined reference point.
And C3, acquiring a moving direction, and taking the undetermined datum point which is the same as the moving direction as a final datum point.
And C4, generating a datum line orthogonal to the moving direction through the final datum point.
For example, if the moving direction is a vertical movement, a reference line in the horizontal direction is generated, whereas if the moving direction is a horizontal movement, a reference line in the vertical direction is generated.
As shown in fig. 2, if the moving direction is the vertical direction, the reference line is N1J.
And C5, determining a display area to be adjusted, wherein the adjustment display area is an adjacent and connected display area overlapped with the datum line.
For example, in fig. 2, the adjacent and connected display areas overlapping the reference line N1J are the display area 1 and the display area 3.
And C6, acquiring the movement amount of the display area.
The movement amount of the display area can be calculated by acquiring the starting and ending coordinates of the movement point.
And C7, determining the coordinates of the display area to be adjusted according to the moving direction and the moving amount.
In this embodiment, the step C7 includes: if the moving direction is vertical, the ordinate increasing amount of each vertex of the display area to be adjusted on the same side of the moving direction is a moving amount, and the abscissa is kept unchanged; if the moving direction is horizontal, the abscissa of each vertex of the display area to be adjusted on the same side of the moving direction is the moving amount, and the ordinate is kept unchanged.
Example 2
Unlike embodiment 1, this embodiment further includes, after the step 5:
and 51, judging the entering direction of the updating operation, if the updating operation enters from the preset direction, entering the next step, otherwise, entering the step 6.
The entering direction refers to the direction in which the hand of the operator enters the display screen area.
In this embodiment, the preset direction is a driving direction.
The entering direction of the hand of the operator can be judged by arranging the infrared detection device on the vehicle, and when the infrared sensor of the driving position is shielded at first, the hand of the operator can be judged to enter from the side of the driving position; the direction of the operator's hand into the display screen area may also be determined by other means, such as image recognition.
Step 52, obtaining the current road condition level, judging whether the current road condition level belongs to the safety level, if yes, entering the next step, otherwise, sending out prompt information for prohibiting the user operation.
The current road condition level needs to be determined according to the reaction distance (front vehicle, pedestrian, obstacle distance, relative vehicle speed, weather, etc.).
In this embodiment, the step 52 includes:
step 52-1, defining a current road condition level, where the current road condition level r=k1×w1+k2×w2+k3×w3, where W1 represents a first parameter of surrounding vehicles related to the host vehicle, W2 represents a second parameter of surrounding pedestrians related to the host vehicle, W3 represents a third parameter of surrounding traffic settings related to the host vehicle, and K1, K2, and K3 represent corresponding first, second, and third factors of the first, second, and third parameters, respectively.
Step 52-2, detecting whether a vehicle is in front of the lane, if yes, setting the first factor K1 to 1 and entering the next step, otherwise, setting the first factor K1 to 0.
Step 52-3, obtaining the distance between the vehicle and the front vehicle and the relative vehicle speed, and calculating the first collision time tc1.
Step 52-4, determining a first parameter W1.
In this embodiment, the first parameter w1=tr/tc 1, where tr is the reaction time, may be obtained by calibration.
52-5, detecting whether a pedestrian exists in front of the vehicle, if yes, setting the second factor K2 to be 1 and entering the next step, otherwise, setting the second factor K2 to be 0;
and 52-6, acquiring the distance between the vehicle and the pedestrian and the relative vehicle speed, and calculating the second collision time tc2.
Step 56-7, determining a second parameter W2.
In this embodiment, the second parameter w2=tr/tc 2, where tr is the reaction time.
And 52-8, detecting whether a traffic light exists in front of the host vehicle, if so, setting the third factor K3 to be 1 and entering the next step, otherwise, setting the third factor K3 to be 0.
And 52-9, acquiring the current speed of the vehicle and the distance between the current speed and the traffic light, and calculating the probability P (%) of running the red light.
Step 52-10, determining a third parameter W3.
In this embodiment, the third parameter w3=p/P0, where P0 represents the reference probability, which can be obtained by calibration, in this embodiment p0=50%.
Step 52-11, determining the current road condition level R, judging whether R is larger than a road condition threshold value R0, if yes, judging that the current road condition level belongs to a dangerous level, and if not, judging that the current road condition level belongs to a safety level.
The road condition threshold value R0 is empirical data and can be obtained through calibration.
The above disclosure is illustrative of the preferred embodiments of the present invention and should not be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (6)
1. A multi-system multi-region display method, comprising:
step 1, loading a display template, and creating a display area object according to the display template;
step 2, storing the display area objects into a linked list in sequence;
step 3, receiving display content of each display area, traversing the linked list, and drawing each display area through a frame buffer area;
step 4, refreshing each display area drawn by the frame buffer area to a display for display;
step 5, judging whether the display area updating operation is detected, if so, entering the next step;
step 51, judging the entering direction of the updating operation, if the updating operation enters from the preset direction, entering the next step, otherwise, entering the step 6;
step 52, obtaining the current road condition level, judging whether the current road condition level belongs to the safety level, if yes, entering the next step, otherwise, sending prompt information for prohibiting the user operation;
step 6, updating the display area according to a preset rule;
the step 52 includes:
step 52-1, defining a current road condition level, where the current road condition level r=k1×w1+k2×w2+k3×w3, where W1 represents a first parameter of surrounding vehicles related to the host vehicle, W2 represents a second parameter of surrounding pedestrians related to the host vehicle, W3 represents a third parameter of surrounding traffic settings related to the host vehicle, and K1, K2, and K3 represent corresponding first, second, and third factors of the first, second, and third parameters, respectively;
52-2, detecting whether a vehicle is in front of the lane, if yes, setting the first factor K1 to 1 and entering the next step, otherwise, setting the first factor K1 to 0;
52-3, obtaining the distance between the vehicle and the front vehicle and the relative vehicle speed, and calculating a first collision time tc1;
step 52-4, determining a first parameter W1;
52-5, detecting whether a pedestrian exists in front of the vehicle, if yes, setting the second factor K2 to be 1 and entering the next step, otherwise, setting the second factor K2 to be 0;
52-6, obtaining the distance between the vehicle and the pedestrian and the relative vehicle speed, and calculating a second collision time tc2;
56-7, determining a second parameter W2;
52-8, detecting whether a traffic light exists in front of the host vehicle, if so, setting the third factor K3 to be 1 and entering the next step, otherwise, setting the third factor K3 to be 0;
52-9, obtaining the current speed of the vehicle and the distance between the current speed and the traffic light, and calculating the probability P (%) of running the red light;
52-10, determining a third parameter W3;
52-11, determining a current road condition level R, judging whether the R is larger than a road condition threshold R0, if yes, judging that the current road condition level belongs to a dangerous level, otherwise, judging that the current road condition level belongs to a safety level;
the first parameter w1=tr/tc 1, where tr is the reaction time;
the second parameter w2=tr/tc 2, where tr is the reaction time;
the third parameter w3=p/P0, where P0 represents a reference probability.
2. The multi-system multi-region display method according to claim 1, wherein the step 6 comprises:
step 601, if the operation of splitting the display area is detected, performing the operation according to a first preset rule;
step 602, if the operation of merging the display areas is detected, performing the operation according to a second preset rule;
step 603, if the operation of moving the display area is detected, the operation is performed according to a third preset rule.
3. The multi-system multi-region display method of claim 2, wherein the first preset rule is:
a1, acquiring a serial number of a selected display area, and acquiring each vertex coordinate of a corresponding display area;
a2, calculating starting point coordinates and ending coordinates of each vertex of the two sub-areas after splitting according to the splitting direction;
a3, updating coordinates of each vertex of the selected area;
step A5, creating a new display area object;
and step A6, updating the linked list according to the new display area object, and returning to the step 3.
4. The multi-system multi-region display method of claim 2, wherein the second preset rule is:
step B1, acquiring a serial number of a selected display area, and acquiring each vertex coordinate of a corresponding display area;
step B2, calculating the coordinates of each vertex of a final display area formed by the selected display areas;
step B3, judging whether the final display area is rectangular, if so, entering the next step, otherwise prompting that the combination cannot be performed;
step B4, modifying the vertex coordinates of the selected first display area into the vertex coordinates of the final display area;
and B5, deleting other display areas except the first display area in the selected display areas from the linked list, updating the display area serial number, and returning to the step 3.
5. The multi-system multi-region display method of claim 2, wherein the third preset rule is:
step C1, acquiring coordinate values of an initial moving point, and judging a display area to which the initial moving point belongs;
step C2, obtaining vertical distances between the initial moving point and four sides of the display area to which the initial moving point belongs, and taking a projection point corresponding to the shorter one of the vertical distances as a datum point to be determined;
step C3, acquiring a moving direction, and taking a pending datum point which is the same as the moving direction as a final datum point;
step C4, generating a datum line orthogonal to the moving direction through the final datum point;
step C5, determining a display area to be adjusted, wherein the adjustment display area is an adjacent and connected display area overlapped with the datum line;
step C6, obtaining the movement amount of the display area;
and C7, determining the coordinates of the display area to be adjusted according to the moving direction and the moving amount.
6. The multi-system multi-region display method according to claim 5, wherein the step C7 comprises: if the moving direction is vertical, the ordinate increasing amount of each vertex of the display area to be adjusted on the same side of the moving direction is a moving amount, and the abscissa is kept unchanged; if the moving direction is horizontal, the abscissa of each vertex of the display area to be adjusted on the same side of the moving direction is the moving amount, and the ordinate is kept unchanged.
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