JPH03163677A - Picture drawing system for ellipse - Google Patents

Picture drawing system for ellipse

Info

Publication number
JPH03163677A
JPH03163677A JP30398289A JP30398289A JPH03163677A JP H03163677 A JPH03163677 A JP H03163677A JP 30398289 A JP30398289 A JP 30398289A JP 30398289 A JP30398289 A JP 30398289A JP H03163677 A JPH03163677 A JP H03163677A
Authority
JP
Japan
Prior art keywords
ellipse
data
section
control part
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP30398289A
Other languages
Japanese (ja)
Inventor
Tomoaki Kanbara
神原　知明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Solution Innovators Ltd
Original Assignee
NEC Solution Innovators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Solution Innovators Ltd filed Critical NEC Solution Innovators Ltd
Priority to JP30398289A priority Critical patent/JPH03163677A/en
Publication of JPH03163677A publication Critical patent/JPH03163677A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To execute the picture drawing of an ellipse of an arbitrary position and an arbitrary size by inputted numerical data by adding a picture drawing system for the ellipse to a display device. CONSTITUTION:A coordinate transformation control part 31 of an ellipse picture drawing device 30 receives numerical data from a data input part 10, and sends it to a trigonometric function data part 21 of a coordinate value input/output part 20. A data control part 22 of the input/output part 20 reads out X and Y values from the data part 21 and sends (x) and (y) values of an ellipse to the control part 31. The control part 31 sends the (x) and the (y) values to a control part 32, and the control part 32 displays the ellipse on a display 40.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、楕円の描画方式に関し、特に表示装置の楕円
描画方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ellipse drawing method, and particularly to an ellipse drawing method for a display device.

〔従来の技術〕[Conventional technology]

従来、この種の表示装置は、オペレータが入力装置から
入力した数値データでｘ，ｙ方向に同じ値の半径で真円
を描画するものとなっていた。Conventionally, this type of display device draws a perfect circle with the same radius in the x and y directions using numerical data input by an operator from an input device.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来の表示装置では、描画するｘ，　ｙ方向の
半径が同じ値でのみ指定となっているので、楕円を描画
することができないという欠点がある。また、楕円を猫
画しようと思えば直線の組み合わせで行えるが、時間が
かかり、正確さに欠けるという欠点がある。The above-mentioned conventional display device has the disadvantage that it is not possible to draw an ellipse because the radii in the x and y directions for drawing can only be specified with the same value. Also, if you want to draw an ellipse as a cat, you can do it by combining straight lines, but this has the drawbacks of being time consuming and lacking in accuracy.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の楕円の描画方式は、中心点及びｘ，ｙ座標の数
値データを人力するデータ入力手段と、データ入力手段
によって入力されたｘ．ｙ座標の数値データを三角関数
にもとづく楕円用のｘ，−ｙ座標に変換する座標変換手
段と、この座標変換手段により変換されたｘ，ｙ座標を
ディスプレイ装置の画面に可視表示する出力手段とを有
している。The ellipse drawing method of the present invention includes a data input means for manually inputting numerical data of the center point and x, y coordinates, and x. Coordinate conversion means for converting numerical data of the y coordinate into x, -y coordinates for an ellipse based on trigonometric functions; and output means for visually displaying the x, y coordinates converted by the coordinate conversion means on a screen of a display device. have.

〔実施例〕〔Example〕

次に本発明について図面を参照して詳細に説明する。 Next, the present invention will be explained in detail with reference to the drawings.

第１図は、本発明の一実施例を示す。第１図において、
本実施例はデータ入力部１０と座標値入出力部２０と、
楕円描画装置部３０とを含み、データ入力部１０は、楕
円の中心点及びｘ，ｙ座標の数値データを入力するため
のキーボード１１とキーボード１１の入力制御をするた
めのキーボード制御部１２を有している。座標値入出力
部２０は、三角関数の値が記憶されている三角関数デー
タ部２１と三角関数データ部からｘ，ｙ座標値を入力す
るためのデータ制御部２２を有し、楕円描画装置３０は
データ入力部１０から入力された数値データをｘ，ｙ座
標値に変換する座標変換制御部３１とディスプレイ４０
の画面に可視表示する出力制御部３２を有する。FIG. 1 shows one embodiment of the invention. In Figure 1,
This embodiment includes a data input section 10, a coordinate value input/output section 20,
The data input unit 10 includes a keyboard 11 for inputting numerical data of the center point of the ellipse and x, y coordinates, and a keyboard control unit 12 for controlling input of the keyboard 11. are doing. The coordinate value input/output section 20 has a trigonometric function data section 21 in which values of trigonometric functions are stored and a data control section 22 for inputting x and y coordinate values from the trigonometric function data section. are a coordinate conversion control unit 31 that converts numerical data input from the data input unit 10 into x, y coordinate values, and a display 40.
It has an output control section 32 that visually displays on the screen of.

楕円描画装置部３０の座標変換制御部３１は、データ人
力部１０から数値データを受け取り、座標値入出力部２
０の三角関数データ部２１へ送る。座標値入出力部２０
のデータ制御部２２は数値データに該当するｘ，ｙ座標
値を三角関数データ部２ｌから読み出して座標変換制御
部３１に楕円のｘ，ｙ座標値を送る。座標変換制御部３
１はデータ制御部２２から送られてくるｘ，ｙ座標値を
出力制御部３２へ送る。出力制御部３２はディスプレイ
４０に送るべき情報を生威し、これをディスプレイ４０
に送ることにより得るべき楕円が表示される。The coordinate conversion control section 31 of the ellipse drawing device section 30 receives numerical data from the data human power section 10 and converts the coordinate value input/output section 2
0 to the trigonometric function data section 21. Coordinate value input/output section 20
The data control unit 22 reads the x, y coordinate values corresponding to the numerical data from the trigonometric function data unit 2l, and sends the x, y coordinate values of the ellipse to the coordinate transformation control unit 31. Coordinate transformation control section 3
1 sends the x and y coordinate values sent from the data control section 22 to the output control section 32. The output control unit 32 generates information to be sent to the display 40 and sends it to the display 40.
The ellipse that should be obtained by sending it to is displayed.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明はディスプレイ装置に楕円の
描画方式を付加することによりデータ入力装置から入力
された数値データでｘ，ｙ方向に任意の位置及び大きさ
の楕円を描画することが可能となり、今までより拡張さ
れた作図ができる効果がある。As explained above, the present invention adds an ellipse drawing method to the display device, thereby making it possible to draw an ellipse at any position and size in the x and y directions using numerical data input from the data input device. , it has the effect of allowing more extended drawing than ever before.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示す図である。 １０・・・データ入力部、１１・・・キーボード、１２
・・・キーボード制御部、２０・・・座標値入出力部、
２１・・・三角関数データ部、２２・・・データ制御部
、３ ０ ・・楕円描画装置部、 ３ １・・・座標変換制御部、 ３ ２・・・出力制御部、 ４ ０・・・ディスプレイ。FIG. 1 is a diagram showing an embodiment of the present invention. 10...Data input section, 11...Keyboard, 12
...keyboard control section, 20...coordinate value input/output section,
21... Trigonometric function data section, 22... Data control section, 30... Ellipse drawing device section, 3 1... Coordinate transformation control section, 3 2... Output control section, 4 0... display.

Claims (1)

【特許請求の範囲】[Claims] 数値データを入力するための入力装置と、三角関数の値
が記憶されている三角関数データ部と、三角関数データ
部からｘ、ｙ座標値を入力するためのデータ制御部と、
入力装置から入力された数値データをｘ、ｙ座標値に変
換する座標変換制御部と、ディスプレイ画面に可視表示
する出力制御部とを有することを特徴とする楕円の描画
方式。an input device for inputting numerical data, a trigonometric function data section in which values of trigonometric functions are stored, and a data control section for inputting x and y coordinate values from the trigonometric function data section;
An ellipse drawing method comprising: a coordinate conversion control section that converts numerical data input from an input device into x, y coordinate values; and an output control section that visually displays on a display screen.
JP30398289A 1989-11-21 1989-11-21 Picture drawing system for ellipse Pending JPH03163677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30398289A JPH03163677A (en) 1989-11-21 1989-11-21 Picture drawing system for ellipse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30398289A JPH03163677A (en) 1989-11-21 1989-11-21 Picture drawing system for ellipse

Publications (1)

Publication Number Publication Date
JPH03163677A true JPH03163677A (en) 1991-07-15

Family

ID=17927616

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30398289A Pending JPH03163677A (en) 1989-11-21 1989-11-21 Picture drawing system for ellipse

Country Status (1)

Country Link
JP (1) JPH03163677A (en)

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