CA1264878A - Circle/ellipse generation in a graphics system - Google Patents

Circle/ellipse generation in a graphics system

Info

Publication number
CA1264878A
CA1264878A CA000523774A CA523774A CA1264878A CA 1264878 A CA1264878 A CA 1264878A CA 000523774 A CA000523774 A CA 000523774A CA 523774 A CA523774 A CA 523774A CA 1264878 A CA1264878 A CA 1264878A
Authority
CA
Canada
Prior art keywords
clipping
mapping
drawn
curved
circle
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.)
Expired
Application number
CA000523774A
Other languages
English (en)
French (fr)
Other versions
CA1264878C (en
Inventor
Kirk S. Haskell
Bob C.C. Liang
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of CA1264878C publication Critical patent/CA1264878C/en
Publication of CA1264878A publication Critical patent/CA1264878A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T15/00—Three-dimensional [3D] image rendering
    • G06T15/10—Geometric effects
    • G06T15/30—Clipping

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Computer Graphics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Generation (AREA)
  • User Interface Of Digital Computer (AREA)
CA000523774A 1986-01-21 1986-11-25 Circle/ellipse generation in a graphics system Expired CA1264878A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82109886A 1986-01-21 1986-01-21
US821,098 1986-01-21

Publications (2)

Publication Number Publication Date
CA1264878C CA1264878C (en) 1990-01-23
CA1264878A true CA1264878A (en) 1990-01-23

Family

ID=25232498

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000523774A Expired CA1264878A (en) 1986-01-21 1986-11-25 Circle/ellipse generation in a graphics system

Country Status (3)

Country Link
EP (1) EP0232005A3 (OSRAM)
JP (1) JPS62171078A (OSRAM)
CA (1) CA1264878A (OSRAM)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62205479A (ja) * 1986-03-05 1987-09-10 Daikin Ind Ltd Ｃｒｔデイスプレイ装置の特殊図形発生回路
GB2227147B (en) * 1989-01-13 1994-04-13 Sun Microsystems Inc Hardware implementation of clipping and inter-coordinate comparison logic
US5297240A (en) * 1989-01-13 1994-03-22 Sun Microsystems, Inc. Hardware implementation of clipping and intercoordinate comparison logic
US5208909A (en) * 1989-10-23 1993-05-04 International Business Machines Corporation Pre-drawing pick detection in a graphics display system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4371933A (en) * 1980-10-06 1983-02-01 International Business Machines Corporation Bi-directional display of circular arcs

Also Published As

Publication number Publication date
JPH031707B2 (OSRAM) 1991-01-11
EP0232005A2 (en) 1987-08-12
CA1264878C (en) 1990-01-23
JPS62171078A (ja) 1987-07-28
EP0232005A3 (en) 1989-04-26

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Legal Events

Date Code Title Description
MKLA Lapsed
MKLA Lapsed

Effective date: 20010123