mirror of
https://github.com/Laex/Delphi-OpenCV.git
synced 2024-11-16 16:25:53 +01:00
7fcbee712c
Multidemo [+] fback_c (cvCalcOpticalFlowFarneback) [+] minarea (cvMinEnclosingCircle, cvMinAreaRect2) Signed-off-by: Laex <laex@bk.ru>
133 lines
3.7 KiB
ObjectPascal
133 lines
3.7 KiB
ObjectPascal
{$APPTYPE CONSOLE}
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{$POINTERMATH ON}
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// JCL_DEBUG_EXPERT_GENERATEJDBG OFF
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// JCL_DEBUG_EXPERT_INSERTJDBG OFF
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// JCL_DEBUG_EXPERT_DELETEMAPFILE OFF
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program minarea;
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{$R *.res}
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uses
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System.SysUtils,
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uLibName in '..\..\..\include\uLibName.pas',
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highgui_c in '..\..\..\include\highgui\highgui_c.pas',
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core_c in '..\..\..\include\ñore\core_c.pas',
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Core.types_c in '..\..\..\include\ñore\Core.types_c.pas',
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imgproc.types_c in '..\..\..\include\imgproc\imgproc.types_c.pas',
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imgproc_c in '..\..\..\include\imgproc\imgproc_c.pas',
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legacy in '..\..\..\include\legacy\legacy.pas',
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calib3d in '..\..\..\include\calib3d\calib3d.pas',
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imgproc in '..\..\..\include\imgproc\imgproc.pas',
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haar in '..\..\..\include\objdetect\haar.pas',
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objdetect in '..\..\..\include\objdetect\objdetect.pas',
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tracking in '..\..\..\include\video\tracking.pas',
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Core in '..\..\..\include\ñore\core.pas';
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{$DEFINE ARRAY }
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Var
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img: pIplImage;
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{$IFNDEF ARRAY}
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storage: pCvMemStorage;
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{$ELSE}
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points: pCvPoint;
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pointMat: TCvMat;
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{$ENDIF}
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key: Integer;
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i: Integer;
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count: Integer;
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pt0, pt: TCvPoint;
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box: TCvBox2D;
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box_vtx: TBoxPoints;
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center: TCvPoint2D32f;
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icenter: TCvPoint;
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radius: Single;
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ptseq: pCvSeq;
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begin
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try
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WriteLn('This program demonstrates finding the minimum enclosing box or circle of a set');
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WriteLn('of points using functions: minAreaRect() minEnclosingCircle().');
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WriteLn('Random points are generated and then enclosed.');
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WriteLn('Call:');
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WriteLn('minarea');
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img := cvCreateImage( cvSize( 500, 500 ), 8, 3 );
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{$IFNDEF ARRAY}
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storage := cvCreateMemStorage(0);
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{$ENDIF}
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cvNamedWindow('rect & circle', 1);
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While True do
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begin
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count := random(100) + 1;
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{$IFNDEF ARRAY}
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ptseq := cvCreateSeq(CV_SEQ_KIND_GENERIC or CV_32SC2, sizeof(TCvContour), sizeof(TCvPoint), storage);
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for i := 0 to count - 1 do
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begin
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pt0.x := random(img^.width div 2) + img^.width div 4;
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pt0.y := random(img^.height div 2) + img^.height div 4;
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cvSeqPush(ptseq, @pt0);
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end;
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{$IFNDEF _EiC} // * unfortunately, here EiC crashes */
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box := cvMinAreaRect2(ptseq);
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{$ENDIF}
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cvMinEnclosingCircle(ptseq, @center, @radius);
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{$ELSE}
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points := Allocmem(count * sizeof(TCvPoint));
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pointMat := cvMat(1, count, CV_32SC2, points);
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for i := 0 to count - 1 do
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begin
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pt0.x := random(img^.width div 2) + img^.width div 4;
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pt0.y := random(img^.height div 2) + img^.height div 4;
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points[i] := pt0;
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end;
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{$IFNDEF _EiC}
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box := cvMinAreaRect2(@pointMat, 0);
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{$ENDIF}
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cvMinEnclosingCircle(@pointMat, @center, @radius);
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{$ENDIF}
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cvBoxPoints(box, box_vtx);
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cvZero(img);
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for i := 0 to count - 1 do
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begin
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{$IFNDEF ARRAY}
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pt0 := pCvPoint(CV_GET_SEQ_ELEM(SizeOf(TCvPoint), ptseq, i))^;
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{$ELSE}
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pt0 := points[i];
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{$ENDIF}
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cvCircle(img, pt0, 2, CV_RGB(255, 0, 0), CV_FILLED, CV_AA, 0);
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end;
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{$IFNDEF _EiC}
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pt0.x := cvRound(box_vtx[3].x);
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pt0.y := cvRound(box_vtx[3].y);
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for i := 0 to 3 do
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begin
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pt.x := cvRound(box_vtx[i].x);
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pt.y := cvRound(box_vtx[i].y);
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cvLine(img, pt0, pt, CV_RGB(0, 255, 0), 1, CV_AA, 0);
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pt0 := pt;
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end;
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{$ENDIF}
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icenter.x := cvRound(center.x);
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icenter.y := cvRound(center.y);
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cvCircle(img, icenter, cvRound(radius), CV_RGB(255, 255, 0), 1, CV_AA, 0);
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cvShowImage('rect & circle', img);
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if cvWaitKey(0) = 27 then
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Break;
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{$IFNDEF ARRAY}
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cvClearMemStorage(storage);
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{$ELSE}
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freemem(points);
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{$ENDIF}
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end;
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cvDestroyWindow('rect & circle');
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except
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on E: Exception do
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WriteLn(E.ClassName, ': ', E.Message);
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end;
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end.
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