OZ++ Sample: OpenGLCVImageViews |
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*
* Copyright (c) 2019 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
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*
* OpenGLCVImageViews.cpp
*
*****************************************************************************/
//2019/01/03
#include <opencv2/stitching.hpp>
#define String _XtString
#include <oz++/StringT.h>
#include <oz++/opengl/OpenGLMainView.h>
#include <oz++/opengl/OpenGLView.h>
#include <oz++/opengl/OpenGLGC.h>
#include <oz++/opengl/OpenGLTexture2D.h>
#include <oz++/opengl/OpenGLBulletinBoard.h>
#undef String
#include <oz++/opencv/OpenCVImageInfo.h>
#include <oz++/opencv/OpenCVImageView.h>
#include <oz++/opencv/OpenCVImageFileReader.h>
namespace OZ {
class MainView :public OpenGLMainView {
public:
private:
//Inner OpenCVImageView class start
class SimpleCVView: public OpenCVImageView {
private:
cv::Mat originalImage;
cv::Mat scaledImage;
public:
virtual void display()
{
show(scaledImage);
}
public:
SimpleCVView(OpenGLBulletinBoard* parent, const char* name, Args& args)
:OpenCVImageView(parent, name, args)
{
try {
const char* filename = (const char*)args.get(XmNimageFileName);
int imageLoadingFlag = args.get(XmNimageLoadingFlag);
loadImage(filename, imageLoadingFlag);
} catch (OZ::Exception ex) {
caught(ex);
}
}
~SimpleCVView()
{
}
void loadImage(const char* filename,
int imageLoadingFlag= CV_LOAD_IMAGE_COLOR)
{
try {
originalImage = readImage(filename, imageLoadingFlag);
scaleImage(originalImage, scaledImage, 60);
refresh();
} catch (OZ::Exception& ex) {
caught(ex);
}
}
};
//Inner OpenGLView class starts.
class SimpleGLView: public OpenGLView {
private:
OpenGLGC gc;
OpenGLTexture2D texture;
bool textured;
cv::Mat blurredImage;
StringT<char> imageFile;
int imageLoadingFlag;
private:
void imageToTexture()
{
try {
int width = 0;
int height = 0;
OpenGLImageInfo imageInfo;
OpenCVImageInfo cvImageInfo;
cvImageInfo.getImageInfo(blurredImage, imageInfo);
texture.image(imageInfo);
} catch (OZ::Exception& ex) {
caught(ex);
}
}
public:
virtual void display()
{
if (textured == false) {
imageToTexture();
textured = true;
}
//Set a proportional perspective.
gc.matrixMode(GL_PROJECTION);
gc.loadIdentity();
gc.perspective(16.0, (double)width() / (double)height(), 0.3, 90.0);
gc.matrixMode(GL_MODELVIEW);
gc.clearColor(1.0, 1.0, 1.0, 1.0);
gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gc.begin(GL_QUADS);
texture.coord(0.0, 0.0);
gc.vertex(-1.0, 1.0, 1.0);
texture.coord(1.0, 0.0);
gc.vertex( 1.0, 1.0, 0.0);
texture.coord(1.0, 1.0);
gc.vertex( 1.0, -1.0, 1.0);
texture.coord(0.0, 1.0);
gc.vertex(-1.0, -1.0, 0.0);
gc.end();
}
virtual void resize(int w, int h)
{
if (w == 0 || h == 0) {
return;
}
gc.matrixMode(GL_PROJECTION);
gc.loadIdentity();
gc.ortho(-1.25, 1.25, -1.25, 1.25, 1., 20.);
gc.matrixMode(GL_MODELVIEW);
gc.loadIdentity();
gc.lookAt(0., 0., 10., 0., 0., 0., 0., 1., 0.);
}
virtual void initialize()
{
gc.enable(GL_DEPTH_TEST);
gc.enable(GL_TEXTURE_2D);
gc.rotate(20.0, 0.0, 0.0, 1.0);
texture.bind();
texture.parameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
texture.parameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR);
texture.env(GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
void blur(cv::Mat& originalImage)
{
int ksize = 13;
int sigma = 10;
ksize = (ksize/2)*2 + 1;
blurredImage = cv::Mat::zeros(originalImage.size(),
originalImage.type() );
//Blur operation is applied to the original image.
cv::GaussianBlur(originalImage, blurredImage, cv::Size(ksize, ksize),
(double)sigma, //sigmaX,
(double)sigma); //sigmaY
}
public:
SimpleGLView(OpenGLBulletinBoard* parent, const char* name, Args& args)
:OpenGLView(parent, name, args)
{
textured = false;
const char* filename = (const char*)args.get(XmNimageFileName);
int imageLoadingFlag = args.get(XmNimageLoadingFlag);
if (filename) {
OpenCVImageFileReader reader;
cv::Mat image = reader.load(filename, imageLoadingFlag);
blur(image);
}
}
~SimpleGLView()
{
}
};
//Inner class ends.
private:
SmartPtr<OpenGLBulletinBoard> bboard;
SmartPtr<SimpleGLView> glView;
SmartPtr<SimpleCVView> cvView;
void resize(Dimension w, Dimension h)
{
if (cvView && glView) {
cvView -> reshape(0, 0, w/2-1, h);
glView -> reshape(w/2+1, 0, w/2-2, h);
}
}
public:
MainView(OpenGLApplication& applet, const char* name, Args& args)
:OpenGLMainView(applet, name,
args.set(XmNopenGLBufferType, OpenGL_DOUBLE_BUFFER))
{
Args ar;
bboard = new OpenGLBulletinBoard(this, "", ar);
const char* filename = "../../opencv/images/flower.png";
ar.reset();
ar.set(XmNopenGLBufferType, (XtArgVal)getBufferType());
ar.set(XmNimageFileName, filename);
ar.set(XmNimageLoadingFlag, cv::IMREAD_COLOR);
glView = new SimpleGLView(bboard, "", ar);
ar.reset();
ar.set(XmNopenGLBufferType, (XtArgVal)getBufferType());
ar.set(XmNimageFileName, filename);
ar.set(XmNimageLoadingFlag, cv::IMREAD_COLOR);
cvView = new SimpleCVView(bboard, "", ar);
sendConfigureEvent();
char title[PATH_MAX];
sprintf(title, "%s - %s", filename, name);
set(XmNtitle, title);
}
~MainView()
{
}
};
}
//
int main(int argc, char** argv)
{
try {
const char* appclass = argv[0];
OpenGLApplication applet(appclass, argc, argv);
Args args;
args.set(XmNwidth, 800);
args.set(XmNheight, 400);
MainView view(applet, argv[0], args);
view.realize();
applet.run();
} catch (OZ::Exception& ex) {
caught(ex);
}
return 0;
}