Repository for OpenCV's extra modules
 
 
 
 
 
 

33 lines
882 B

#include <opencv2/v4d/v4d.hpp>
using namespace cv;
using namespace cv::v4d;
class FontRenderingPlan: public Plan {
//The text to render
string hw_ = "Hello World";
public:
FontRenderingPlan(const cv::Size& sz) : Plan(sz) {
}
void infer(Ptr<V4D> win) override {
//Render the text at the center of the screen. Note that you can load you own fonts.
win->nvg([](const Size &sz, const string &str) {
using namespace cv::v4d::nvg;
clear();
fontSize(40.0f);
fontFace("sans-bold");
fillColor(Scalar(255, 0, 0, 255));
textAlign(NVG_ALIGN_CENTER | NVG_ALIGN_TOP);
text(sz.width / 2.0, sz.height / 2.0, str.c_str(),
str.c_str() + str.size());
}, win->fbSize(), hw_);
}
};
int main() {
cv::Ptr<FontRenderingPlan> plan = new FontRenderingPlan(cv::Size(960,960));
cv::Ptr<V4D> window = V4D::make(plan->size(), "Font Rendering");
window->run(plan);
}