opencv20/4.2.cpp at master · arnunan/opencv20 · GitHub

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// Part4.cpp : Этот файл содержит функцию "main". Здесь начинается и заканчивается выполнение программы.
//

#include <iostream>
#include <sstream>

#include <cv.h>
#include <highgui.h>


IplImage* temp = new IplImage();

void my_mouse_callback1(int event, int x, int y, int flags, void* param)
{
	IplImage* image = (IplImage*)param;
	switch (event)
	{
	    case CV_EVENT_LBUTTONDOWN:
	    {

			CvScalar Pixel = cvGet2D(image, x, y);

			std::ostringstream strs;
			strs << Pixel.val[0] << " " << Pixel.val[1] << " " << Pixel.val[2] << " ";
			CvFont font;
			cvInitFont(&font, CV_FONT_HERSHEY_SIMPLEX, 0.3, 0.3);

			temp = cvCloneImage(image);
			cvPutText(temp, strs.str().c_str(), cvPoint(x, y), &font, cvScalarAll(0));

			break;
	    }
		default:
		{
			break;
		}
	}
}

CvRect  box;
bool drawing_box = false;

void draw_box(IplImage* img, CvRect rect) {
	 cvRectangle(img, cvPoint(box.x, box.y), cvPoint(box.x + box.width, box.y + box.height), cvScalar(0x00, 0x00, 0x00));
}

void my_mouse_callback2(int event, int x, int y, int flags, void* param)
{
	IplImage* image = (IplImage*)param;
	switch (event)
	{
	    case CV_EVENT_MOUSEMOVE: {
		     if (drawing_box) {
		         box.width = x - box.x;
		         box.height = y - box.y;
			 }
			 break;
		}
		case CV_EVENT_LBUTTONDOWN: {
		     drawing_box = true;
		     box = cvRect(x, y, 0, 0);
			 break;
		}
		case CV_EVENT_LBUTTONUP: {
			 drawing_box = false;
		     if (box.width < 0) {
			     box.x += box.width;
				 box.width *= -1;
		     }
		     if (box.height < 0) {
				 box.y += box.height;
				 box.height *= -1;
			 }
			 temp = cvCloneImage(image);
			 draw_box(temp, box);
			 break;
		}
		default: {
			 break;
		}
	}
}

bool status_drawing = false;
CvPoint PointA, PointB;
void my_mouse_callback3(int event, int x, int y, int flags, void* param)
{
	IplImage* image = (IplImage*)param;
	switch (event)
	{
	case CV_EVENT_LBUTTONDOWN: {
		status_drawing = true;
		PointA.x = x;
		PointA.y = y;
	}
	case CV_EVENT_LBUTTONUP: {
		status_drawing = false;
		PointB.x = x;
		PointB.y = y;
		temp = cvCloneImage(image);
		cvLine(temp, PointA, PointB, cvScalarAll(0), 1);
		break;
	}
	case CV_EVENT_RBUTTONDOWN: {
		cvCircle(temp, cvPoint(x, y), 5, cvScalarAll(255), 20);

		break;
	}
	default: {
		break;
	}
	}
}


int pos_value = 0;
void position_callback(int position)
{
	pos_value = position * 10;
}

int turn = 0;
void turn_callback(int position)
{
	turn = position;
}


int main(int argc, char* argv[])
{


   ////##################################################################################
     упражнение 4.2 - текст на изображении

    IplImage* Picture = cvLoadImage("../Part3/picture/88.png");
    temp = cvCloneImage(Picture);

    cvNamedWindow("Pixels");
    cvSetMouseCallback("Pixels", my_mouse_callback1, (void*)Picture);

    bool work = true;
    while (work)
    {
    	cvShowImage("Pixels", temp);

    	if (27 == cvWaitKey(15)) // нажатие кнопки ecs
    		work = false;
    }

    cvDestroyWindow("Pixels");

    getchar();
}