TW331000B - Method for determining crossing points of two overlapping figures - Google Patents

Method for determining crossing points of two overlapping figures

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Publication number
TW331000B
TW331000B TW083112236A TW83112236A TW331000B TW 331000 B TW331000 B TW 331000B TW 083112236 A TW083112236 A TW 083112236A TW 83112236 A TW83112236 A TW 83112236A TW 331000 B TW331000 B TW 331000B
Authority
TW
Taiwan
Prior art keywords
point
outline
crossing points
value
crossing
Prior art date
Application number
TW083112236A
Other languages
Chinese (zh)
Inventor
Sheng-Jer Ding
Original Assignee
Eten Information System Co 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 Eten Information System Co Ltd filed Critical Eten Information System Co Ltd
Priority to TW083112236A priority Critical patent/TW331000B/en
Application granted granted Critical
Publication of TW331000B publication Critical patent/TW331000B/en

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Abstract

A method for determining crossing points of two overlapping figure outlines, where the figure is represented by a closed outline description format that includes a data array of points on the outline, includes the following steps: (1) prepare a memory space for storing a background value corresponding to the point data array and a foreground value corresponding to the point data inside the outline; (2) read the stored values in the memory space along the point data on the outline of the figure; (3) from P1 to P2, if the corresponding values stored in memory change from the foreground value to the background value then let point P2 be an out-crossing point; (4) from P1 to P2, if the corresponding values stored in memory change from the background value to the foreground value then let point P2 be an in-crossing point.
TW083112236A 1994-12-28 1994-12-28 Method for determining crossing points of two overlapping figures TW331000B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW083112236A TW331000B (en) 1994-12-28 1994-12-28 Method for determining crossing points of two overlapping figures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW083112236A TW331000B (en) 1994-12-28 1994-12-28 Method for determining crossing points of two overlapping figures

Publications (1)

Publication Number Publication Date
TW331000B true TW331000B (en) 1998-05-01

Family

ID=58262662

Family Applications (1)

Application Number Title Priority Date Filing Date
TW083112236A TW331000B (en) 1994-12-28 1994-12-28 Method for determining crossing points of two overlapping figures

Country Status (1)

Country Link
TW (1) TW331000B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102722267A (en) * 2005-07-01 2012-10-10 吉田健治 Dot pattern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102722267A (en) * 2005-07-01 2012-10-10 吉田健治 Dot pattern

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Legal Events

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MM4A Annulment or lapse of patent due to non-payment of fees