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Display apparatus, program and recording medium

A technology for display devices and display devices, applied in static indicators, cathode ray tube indicators, image data processing, etc., can solve the problems of difficult high-speed, difficult to attach conditions, etc., and achieve the effect of high-speed display

Inactive Publication Date: 2010-10-06
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this interpolation needs to set restrictions on the endpoints, and there is a problem that it is difficult to attach conditions
Moreover, there is also the problem that it is difficult to speed up

Method used

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  • Display apparatus, program and recording medium
  • Display apparatus, program and recording medium
  • Display apparatus, program and recording medium

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] 1. Principle of the present invention

[0072] The principle of the present invention will be described below with reference to the accompanying drawings.

[0073] When the present invention draws a curve, it focuses on the curve connecting three points, and selects a line mode corresponding to the determined positional relationship from at least one line mode passing through the first point and the second point, so that it can be displayed through The line between the first point and the second point. By selecting the mode of the line passing through the first point and the second point without calculating the locus of the line passing through the first point and the second point, the line passing through the first point and the second point can be displayed at high speed.

[0074] Furthermore, a holding unit is provided for holding pattern information indicating a correspondence relationship between a positional relationship and a line pattern, and the selection of...

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PUM

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Abstract

A display apparatus is provided with a display device for displaying lines and a control part for controlling the display device. As for given first point, second point and third point, the control part decides a first positional relationship between at least the first point or the second point, and the third point. Then, the control part selects one line pattern corresponding to the decided first positional relationship, from at least one line pattern, which is previously prepared and passes the first point and the second point, and displays a line passing the first point and the second point on the display device, corresponding to the selected line pattern.

Description

technical field [0001] The present invention relates to a display device, a program, and a recording medium including a display device for displaying lines and a control unit for controlling the display device. According to the present invention, it is possible, for example, to display curved characters at a high speed on a display device having a medium or low resolution. Background technique [0002] Outline fonts represent text with the outline of a closed curve. The outline characters are widely used in the technology of displaying characters based on vector data. Outline characters are, for example, TrueType fonts and PostScript fonts. For the curve of the TrueType font, a quadratic B-spline curve is used (see Equation 1). Bezier curves are used for the curves of the PostScript font (see Equation 2). [0003] [Formula 1] [0004] x=(1-t) 2 x 1 +2t(1-t)x 2 +t 2 x 3 [0005] y=(1-t) 2 the y 1 +2t(1-t)y 2 +t 2 the y 3 [0006] 0≤t≤1 [0007] [Formula 2] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/20G09G5/24
CPCG06T11/203G09G5/24G06T11/00G06T11/20
Inventor 小山至幸作田瑞西田收
Owner SHARP KK
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