Method for rapidly drawing curves multiple times

A technology for drawing curves and curves, which is applied in the field of quickly drawing multiple curves to achieve fast display and improve the drawing speed

Active Publication Date: 2013-01-30
FENGHUO COMM SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] A major problem with unified management is managing capacity

Method used

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  • Method for rapidly drawing curves multiple times
  • Method for rapidly drawing curves multiple times
  • Method for rapidly drawing curves multiple times

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] see figure 1 As shown, the embodiment of the present invention provides a method for quickly drawing multiple curves, including the following steps: selectively calculate the actual drawing points of the curve without greatly affecting the drawing accuracy, and after determining a reasonable initial value, Dynamically adjust the interval value of the actual drawing points according to the calculation results, which can reduce the calculation number of drawing points and thus improve the drawing speed. The specific process is as follows:

[0023] S1. Calculate the length sum of all line segments according to the order of the starting point, middle point, and end point of the curve, and obtain the inverse number as the initial value of the interval value of the actual drawing point of the curve to be drawn;

[0024] S2. The form...

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Abstract

The invention discloses a method for rapidly drawing curves multiple times, which relates to the drawing field of vector graphic images. The method comprises the following steps: according to a curve starting point-middle point-ending point sequence, sequentially computing the reciprocal of the length of a connecting line, and taking the reciprocal as the initial value of an interval value of actual drawing points of a curve to be drawn, selecting a value t according to the interval value, and sequentially obtaining the values of curve points according to a multi-time curve formula; judging whether the calculated coordinate is same as the previous coordinate, if so, doubling the interval value, otherwise, storing the coordinate result into the tail of a curve coordinate column, and continuing to carry out calculation and judgment. According to the invention, based on the optimization of a bezier curve algorithm, through controlling the number of times of recursive iteration and excluding similar points, the number of drawing points is reduced so as to improve the curve drawing speed, therefore, an effect of rapidly drawing curves multiple times under a large amount of data can be achieved.

Description

technical field [0001] The invention relates to the field of drawing vector graphic images, in particular to a method for quickly drawing multiple curves. Background technique [0002] With the development of network IP (Internet Protocol, a protocol for interconnection between networks) and FMC (Fixed-Mobile Convergence, fixed network and mobile network integration), operators' operation and maintenance models will undergo profound changes. The layered management of element types is gradually moving towards integrated management, and at the same time, there are higher requirements for operation and maintenance costs and user experience. Therefore, in order to adapt to the development of future networks, the communication network management system must realize unified management of various types of network elements and fully meet the requirements of integrated network elements. The needs of network operation and maintenance management. [0003] A major problem with unified ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/20
Inventor 郭大鸣
Owner FENGHUO COMM SCI & TECH CO LTD
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