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A method and device for redrawing graphic objects when a flow chart is refreshed

A technology of graphic objects and flowcharts, applied in the field of image processing, can solve the problems of long-term CPU usage, reduced system performance, and low efficiency of flowchart refresh.

Active Publication Date: 2019-01-29
ZHEJIANG SUPCON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the refresh technology of the flow chart is still in the stage of redrawing all the graphic objects on the flow chart. Obviously, the method of redrawing the graphic objects when using the existing flow chart refresh will undoubtedly bring the flow chart refresh The problem of low efficiency, at the same time, the CPU will be continuously occupied for a long time, reducing the performance of the system

Method used

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  • A method and device for redrawing graphic objects when a flow chart is refreshed
  • A method and device for redrawing graphic objects when a flow chart is refreshed

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Embodiment Construction

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0036] The graphic objects on the flowchart in the embodiment of the present invention often need to be driven by data and change dynamically and in real time. For example, in an industrial flow chart, a valve drawn with a graphic object at normal temperature or pressure needs to be displayed in green, while at high temperature or high pressure, the corresponding valve needs to be displayed in red or even flashing; similar changes also in...

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Abstract

The invention discloses a graphic object redraw method and device when a flow chart refreshes. The method comprises the steps: a graphic object which meets a first condition is selected as a direct influence object of a source change object, and the first condition comprises that the direct influence object intersects with a minimum enclosing rectangle before the change of the source change object or a minimum enclosing rectangle after the change of the source change object; a graphic object which meets a second condition is selected as an indirect influence object of the source change object, and the second condition comprises that the indirect influence object intersects a minimum enclosing rectangle of the direct influence object and is arranged above a layer comprising the direct influence object; the step of novel indirect influence object selection is performed circularly, the direct influence object, the indirect influence object and the source change object are redrawn according to the graphic object drawing sequence in flow chart Z direction. According to the invention, from the point of the relationship between graphic objects, if the graphic objects actually need to be redrawn is judged, redraw-required graphic objects are determined as few as possible, and the problem of low redraw efficiency in complex flow chart periodical refresh is effectively solved.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and device for redrawing graphic objects when a flowchart is refreshed. Background technique [0002] Flowchart drawing software usually provides basic elements for drawing flowcharts, such as lines, polylines, rectangles, ellipses, sectors, polygons, buttons, etc. These elements are called graphic objects. In a specific application environment, there is generally an application requirement to display as many graphic objects as possible in the same flowchart. [0003] According to the actual statistical analysis of flowchart applications, the number of graphic objects included in conventional flowcharts is generally about 1000, and the number of graphic objects included in more complex flowcharts may even reach about 4000. Due to some specific application environments, such as the flow chart of an industrial site, there will be a need to display the real-time data values...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/20
CPCG06T11/206
Inventor 罗幸明徐伟强
Owner ZHEJIANG SUPCON TECH
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