Update to 2.0.0 tree from current Fremantle build

[opencv] / samples / c / example_cmake / minarea.c

diff --git a/samples/c/example_cmake/minarea.c b/samples/c/example_cmake/minarea.c
new file mode 100755 (executable)
index 0000000..c03da82
--- /dev/null
+++ b/samples/c/example_cmake/minarea.c
@@ -0,0 +1,107 @@
+#ifdef _CH_
+#pragma package <opencv>
+#endif
+
+#ifndef _EiC
+#include "cv.h"
+#include "highgui.h"
+#include <stdlib.h>
+#endif
+
+#define ARRAY  1
+
+int main( int argc, char** argv )
+{
+    IplImage* img = cvCreateImage( cvSize( 500, 500 ), 8, 3 );
+#if !ARRAY        
+    CvMemStorage* storage = cvCreateMemStorage(0);
+#endif
+
+    cvNamedWindow( "rect & circle", 1 );
+        
+    for(;;)
+    {
+        char key;
+        int i, count = rand()%100 + 1;
+        CvPoint pt0, pt;
+        CvBox2D box;
+        CvPoint2D32f box_vtx[4];
+        CvPoint2D32f center;
+        CvPoint icenter;
+        float radius;
+#if !ARRAY            
+        CvSeq* ptseq = cvCreateSeq( CV_SEQ_KIND_GENERIC|CV_32SC2, sizeof(CvContour),
+                                     sizeof(CvPoint), storage );
+        for( i = 0; i < count; i++ )
+        {
+            pt0.x = rand() % (img->width/2) + img->width/4;
+            pt0.y = rand() % (img->height/2) + img->height/4;
+            cvSeqPush( ptseq, &pt0 );
+        }
+#ifndef _EiC /* unfortunately, here EiC crashes */
+        box = cvMinAreaRect2( ptseq, 0 );
+#endif
+        cvMinEnclosingCircle( ptseq, &center, &radius );
+#else
+        CvPoint* points = (CvPoint*)malloc( count * sizeof(points[0]));
+        CvMat pointMat = cvMat( 1, count, CV_32SC2, points );
+
+        for( i = 0; i < count; i++ )
+        {
+            pt0.x = rand() % (img->width/2) + img->width/4;
+            pt0.y = rand() % (img->height/2) + img->height/4;
+            points[i] = pt0;
+        }
+#ifndef _EiC
+        box = cvMinAreaRect2( &pointMat, 0 );
+#endif
+        cvMinEnclosingCircle( &pointMat, &center, &radius );
+#endif
+        cvBoxPoints( box, box_vtx );
+        cvZero( img );
+        for( i = 0; i < count; i++ )
+        {
+#if !ARRAY                
+            pt0 = *CV_GET_SEQ_ELEM( CvPoint, ptseq, i );
+#else
+            pt0 = points[i];
+#endif
+            cvCircle( img, pt0, 2, CV_RGB( 255, 0, 0 ), CV_FILLED, CV_AA, 0 );
+        }
+
+#ifndef _EiC
+        pt0.x = cvRound(box_vtx[3].x);
+        pt0.y = cvRound(box_vtx[3].y);
+        for( i = 0; i < 4; i++ )
+        {
+            pt.x = cvRound(box_vtx[i].x);
+            pt.y = cvRound(box_vtx[i].y);
+            cvLine(img, pt0, pt, CV_RGB(0, 255, 0), 1, CV_AA, 0);
+            pt0 = pt;
+        }
+#endif
+        icenter.x = cvRound(center.x);
+        icenter.y = cvRound(center.y);
+        cvCircle( img, icenter, cvRound(radius), CV_RGB(255, 255, 0), 1, CV_AA, 0 );
+
+        cvShowImage( "rect & circle", img );
+
+        key = (char) cvWaitKey(0);
+        if( key == 27 || key == 'q' || key == 'Q' ) // 'ESC'
+            break;
+
+#if !ARRAY
+        cvClearMemStorage( storage );
+#else
+        free( points );
+#endif
+    }
+    
+    cvDestroyWindow( "rect & circle" );
+    return 0;
+}
+
+#ifdef _EiC
+main(1,"convexhull.c");
+#endif
+