Graphic object redraw method and device when flow chart refreshes

A graphic object and flow chart technology, applied in the field of image processing, can solve problems such as low flow chart refresh efficiency, long-term CPU occupation, and reduced system performance

Active Publication Date: 2016-04-20
ZHEJIANG SUPCON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Graphic object redraw method and device when flow chart refreshes
  • Graphic object redraw method and device when flow chart refreshes

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this 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 in real time. For example, in an industrial flow chart, the valve drawn by a graphic object needs to be displayed in green at normal temperature or pressure, while at high temperature or high pressure, the corresponding valve needs to be displayed in red or even flashing; similar changes also include graphic objects Move, rotate, fill, scale, ...

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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 flow chart is refreshed. Background technique [0002] Flowchart drawing software usually provides basic elements such as straight lines, polylines, rectangles, ellipses, sectors, polygons, buttons, etc. for drawing flowcharts, and these elements are called graphic objects. In a specific application environment, generally there is an application requirement to display as many graphic objects as possible in the same flow chart. [0003] According to statistical analysis of actual application of flowcharts, 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-ti...

Claims

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Application Information

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