Arc drafting method based on pen in pen type user interface
A user interface and circular arc technology, applied in the field of human-computer interaction, can solve the problems of wasting switching time, switching times, and switching paths.
Inactive Publication Date: 2011-06-22
INST OF SOFTWARE - CHINESE ACAD OF SCI
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, these graphical user interface-based application software often have a problem called "round-trip travel": when users want to build a complex geometric figure, they often have to complete many different mouse clicks, many times Different button clicks need to switch back and forth between different clicks, which leads to a waste of too much switching time, switching times, and switching paths
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0055] Figure 4 The process of using the method of the present invention to simulate "ruler and compass construction" and draw an angle bisector is shown, and its steps include:
[0056] 1. The user clicks point B with the tip of the pen to confirm that the center of the circle is B, and the virtual compass changes from black to green;
[0057] 2. The user tilts the body of the pen, and the compass expands. The user adjusts the inclination angle and azimuth of the pen body. The distance between the two fulcrums of the compass, that is, the radius of the circle, changes accordingly until the expected radius of the circle is obtained. The user spins the body of the pen (towards Spin in the same direction, or spin back and forth, etc.) to fix the radius, and...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a pen-based circular arc drawing method in a pen-based user interface, and belongs to the technical field of human-computer interaction. The method comprises the following steps: a) a processing system takes a point selected by a user as the circle center of a circular arc; b) the processing system reads the inclination angle of a pen body, and determines the circle radiusby a set method according to the inclination angle, wherein the circle radius is changed along with the change of the inclination angle; c) the processing system fixes the circle radius according to an instruction of the user; d) the processing system draws the circular arc according to the circle center and the circle radius, simultaneously reads the change of the azimuth angle of the pen body, and determines the central angle of the circular arc by the set method according to the change of the azimuth angle, wherein the central angle is changed along with the change of the azimuth angle; and e) the processing system fixes the central angle according to an instruction of the user, ends drawing, and returns to the initial state. The method can be used in wide technical fields such as education, engineering design and drawing, map navigation simulation and the like.
Description
technical field [0001] The invention relates to a pen-type user interface, in particular to a pen-based arc drawing method, and belongs to the technical field of human-computer interaction. Background technique [0002] Among the application fields of the pen-type user interface, the field of education is a very important and very special application field. In the process of learning geometric knowledge, students should not only learn some basic concepts and basic theorems, but also learn the construction method of geometric figures to explore the relationship between geometric figures. Ruler-and-compass construction is a very useful way to construct geometric figures (see Ruler-and-compass construction, http: / / en.wikipedia.org / wiki / Compass_and_straightedge). The "ruler" in the drawing of a ruler and compass refers to a straightedge without scale, which is only used to connect two points; "ruler" refers to a compass used to draw circles and arcs with a fixed radius. , the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/80
Inventor 田丰姜映映陈明炫戴国忠王宏安
Owner INST OF SOFTWARE - CHINESE ACAD OF SCI