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Method and device used for displaying geometrical characteristic of graph in electronic whiteboard

A geometric feature, electronic whiteboard technology, applied in the display technology field of interactive whiteboard system, can solve the problem of not providing the center of gravity, center line, vertical line, circumscribed circle, inscribed circle, etc.

Inactive Publication Date: 2012-07-11
HANVON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current electronic whiteboards generally only display basic information such as vertices, interior angles, and side lengths, and do not provide information such as center of gravity, centerline, perpendicular line, circumscribed circle, and inscribed circle.

Method used

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  • Method and device used for displaying geometrical characteristic of graph in electronic whiteboard
  • Method and device used for displaying geometrical characteristic of graph in electronic whiteboard
  • Method and device used for displaying geometrical characteristic of graph in electronic whiteboard

Examples

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no. 1 example

[0050] The first embodiment: display method of geometric features of graphics in electronic whiteboard

[0051] The present invention proposes the first embodiment, with reference to figure 2 It is a flowchart of a method for displaying geometric features of graphics in an electronic whiteboard, including the following steps:

[0052] Step 101: draw the geometric figure selected by the input device in the drawing area of ​​the electronic whiteboard according to the movement track of the input device of the electronic whiteboard;

[0053] Step 102: call the geometric feature corresponding to the geometric figure, and display the geometric feature in the geometric figure in real time;

[0054] Step 103: Record the movement track of the size control point of the geometric figure dragged by the input device, calculate the corresponding coordinates of the geometric features that need to be displayed in the geometric figure according to the obtained movement track, and draw and ...

no. 2 example

[0084] The second embodiment: display device for geometrical characteristics of graphics in electronic whiteboard

[0085] First please refer to Figure 6 , which is the second embodiment proposed by the present invention, is a structural diagram of a device for displaying graphic geometric features in an electronic whiteboard, including: a selection module, a calculation module and a display module.

[0086]The selection module provides a selection function menu, and selects the geometric figures to be displayed and the geometric features of the geometric figures to be displayed according to the selection of the input device. The input device can be an electronic whiteboard marker, a finger and a touch pen. The selection function menu includes: magnifying glass function, brush function, fill color function, curve drawing function, geometry drawing function, setting function, selection function, save function, etc. The geometry drawing function may further select the geome...

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Abstract

The invention relates to a method used for displaying a geometrical characteristic of a graph in an electronic whiteboard, and belongs to the technical field of graphic processing. The method comprises the following steps of: according to the shifting track of an input device of the electronic whiteboard, drawing a geometrical figure selected by the input device on a drawing region of the electronic whiteboard; and invoking corresponding geometrical characteristics of the geometrical figure, and displaying the geometrical characteristics in the geometrical figure in real time; and recording the shifting track of a size control point of the geometrical figure dragged by the input device, calculating corresponding co-ordinates of the geometrical characteristics required to be displayed of the geometrical figure according to the obtained shifting track, and drawing and displaying the geometrical characteristics in real time. The method provided by the invention is capable of realizing display of multifold geometrical characteristics of the geometrical figure and adjusting the geometrical characteristics in real time according to the shifting track of the geometrical figure dragged by the input device, improving the interactivity and enjoyment of the electronic whiteboard in an education teaching process, thereby increasing teaching effects.

Description

[0001] technical field [0002] The invention belongs to the field of electronic whiteboards, and more specifically relates to the display technology of an interactive whiteboard system. [0003] Background technique [0004] Interactive electronic systems include interactive electronic whiteboards, tablet computers, etc. The interactive electronic system has the characteristics of flexibility and interactivity. The electronic whiteboard is connected to the computer through the touch screen, and the projection device projects the content on the computer to the touch screen. Through the application program running on the personal computer, the user clicks and writes on the touch screen Complete the interaction with the computer to form an interactive, large-screen conference and teaching environment. [0005] In ordinary electronic whiteboards, users can choose the geometric figures they want to display, such as triangles, quadrilaterals, pentagons, etc. In addition to bas...

Claims

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Application Information

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IPC IPC(8): G09B5/02G06F3/048G06F3/0488
Inventor 杨岚周宏杰
Owner HANVON CORP
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