HALCON 19.11.0.0 / HALCON Operator Reference / Graphics / Output
ClassesClasses | | Operators

disp_arcT_disp_arcDispArcDispArc (Operator)

Name

disp_arcT_disp_arcDispArcDispArc — Displays circular arcs in a window.

Signature

disp_arc( : : WindowHandle, CenterRow, CenterCol, Angle, BeginRow, BeginCol : )

Herror T_disp_arc(const Htuple WindowHandle, const Htuple CenterRow, const Htuple CenterCol, const Htuple Angle, const Htuple BeginRow, const Htuple BeginCol)

void DispArc(const HTuple& WindowHandle, const HTuple& CenterRow, const HTuple& CenterCol, const HTuple& Angle, const HTuple& BeginRow, const HTuple& BeginCol)

void HWindow::DispArc(const HTuple& CenterRow, const HTuple& CenterCol, const HTuple& Angle, const HTuple& BeginRow, const HTuple& BeginCol) const

void HWindow::DispArc(double CenterRow, double CenterCol, double Angle, Hlong BeginRow, Hlong BeginCol) const

static void HOperatorSet.DispArc(HTuple windowHandle, HTuple centerRow, HTuple centerCol, HTuple angle, HTuple beginRow, HTuple beginCol)

void HWindow.DispArc(HTuple centerRow, HTuple centerCol, HTuple angle, HTuple beginRow, HTuple beginCol)

void HWindow.DispArc(double centerRow, double centerCol, double angle, int beginRow, int beginCol)

Description

disp_arcdisp_arcDispArcDispArcDispArc displays one or several circular arcs in the output window. An arc is described by its center point (CenterRowCenterRowCenterRowCenterRowcenterRow,CenterColCenterColCenterColCenterColcenterCol), the angle between start and end of the arc (AngleAngleAngleAngleangle in radians) and the first point of the arc (BeginRowBeginRowBeginRowBeginRowbeginRow,BeginColBeginColBeginColBeginColbeginCol). The arc is displayed in clockwise direction. The parameters for output can be determined - as with the output of regions - with the operators set_colorset_colorSetColorSetColorSetColor, set_grayset_graySetGraySetGraySetGray, set_drawset_drawSetDrawSetDrawSetDraw, etc. It is possible to draw several arcs with one call by using tupel parameters. For the use of colors with several arcs, see set_colorset_colorSetColorSetColorSetColor.

Attention

The center point has to be within the window. The radius of the arc has be at least 2 pixel.

Execution Information

Parameters

WindowHandleWindowHandleWindowHandleWindowHandlewindowHandle (input_control)  window → HWindow, HTupleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)

Window handle.

CenterRowCenterRowCenterRowCenterRowcenterRow (input_control)  arc.center.y → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Row coordinate of center point.

Default value: 64

Suggested values: 0, 64, 128, 256

Typical range of values: 0 ≤ CenterRow CenterRow CenterRow CenterRow centerRow ≤ 511 (lin)

Minimum increment: 1

Recommended increment: 1

CenterColCenterColCenterColCenterColcenterCol (input_control)  arc.center.x → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Column coordinate of center point.

Default value: 64

Suggested values: 0, 64, 128, 256

Typical range of values: 0 ≤ CenterCol CenterCol CenterCol CenterCol centerCol ≤ 511 (lin)

Minimum increment: 1

Recommended increment: 1

AngleAngleAngleAngleangle (input_control)  arc.angle.rad → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Angle between start and end of the arc (in radians).

Default value: 3.1415926

Suggested values: 0.0, 0.785398, 1.570796, 3.1415926, 6.283185

Typical range of values: 0.0 ≤ Angle Angle Angle Angle angle ≤ 6.283185 (lin)

Minimum increment: 0.01

Recommended increment: 0.1

Restriction: Angle > 0.0

BeginRowBeginRowBeginRowBeginRowbeginRow (input_control)  arc.begin.y(-array) → HTupleHTupleHtuple (integer / real) (int / long / double) (Hlong / double) (Hlong / double)

Row coordinate of the start of the arc.

Default value: 32

Suggested values: 0, 64, 128, 256

Typical range of values: 0 ≤ BeginRow BeginRow BeginRow BeginRow beginRow ≤ 511 (lin)

Minimum increment: 1

Recommended increment: 1

BeginColBeginColBeginColBeginColbeginCol (input_control)  arc.begin.x(-array) → HTupleHTupleHtuple (integer / real) (int / long / double) (Hlong / double) (Hlong / double)

Column coordinate of the start of the arc.

Default value: 32

Suggested values: 0, 64, 128, 256

Typical range of values: 0 ≤ BeginCol BeginCol BeginCol BeginCol beginCol ≤ 511 (lin)

Minimum increment: 1

Recommended increment: 1

Example (HDevelop)

open_window(0,0,-1,-1,'root','visible','',WindowHandle)
set_draw(WindowHandle,'fill')
set_color(WindowHandle,'white')
Row := 100
Column := 100
disp_arc(WindowHandle,Row,Column,3.14,Row+10,Column+10)
close_window(WindowHandle)

Result

disp_arcdisp_arcDispArcDispArcDispArc returns 2 (H_MSG_TRUE).

Possible Predecessors

open_windowopen_windowOpenWindowOpenWindowOpenWindow, set_drawset_drawSetDrawSetDrawSetDraw, set_colorset_colorSetColorSetColorSetColor, set_coloredset_coloredSetColoredSetColoredSetColored, set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidth, set_rgbset_rgbSetRgbSetRgbSetRgb, set_hsiset_hsiSetHsiSetHsiSetHsi

Alternatives

disp_circledisp_circleDispCircleDispCircleDispCircle, disp_ellipsedisp_ellipseDispEllipseDispEllipseDispEllipse, disp_regiondisp_regionDispRegionDispRegionDispRegion, gen_circlegen_circleGenCircleGenCircleGenCircle, gen_ellipsegen_ellipseGenEllipseGenEllipseGenEllipse

See also

open_windowopen_windowOpenWindowOpenWindowOpenWindow, set_colorset_colorSetColorSetColorSetColor, set_drawset_drawSetDrawSetDrawSetDraw, set_rgbset_rgbSetRgbSetRgbSetRgb, set_hsiset_hsiSetHsiSetHsiSetHsi

Module

Foundation

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HALCON Operator Reference 19.11.0.0 Copyright © 1996-2019 MVTec Software GmbH