43 lines
1.3 KiB
43 lines
1.3 KiB
#include <opencv2/v4d/v4d.hpp> |
|
|
|
using namespace cv; |
|
using namespace cv::v4d; |
|
|
|
int main() { |
|
Ptr<V4D> window = V4D::make(Size(1280, 720), cv::Size(), "Font Rendering with GUI"); |
|
|
|
//The text color. NanoGUI uses rgba with floating point |
|
nanogui::Color textColor = {0.0f, 0.0f, 1.0f, 1.0f}; |
|
//The font size |
|
float size = 40.0f; |
|
//The text |
|
string hw = "hello world"; |
|
//Setup the GUI |
|
window->nanogui([&](FormHelper& form) { |
|
//Create a light-weight dialog |
|
form.makeDialog(5, 30, "Settings"); |
|
//Create a group |
|
form.makeGroup("Font"); |
|
//Create a from variable. The type of widget is deduced from the variable type. |
|
form.makeFormVariable("Font Size", size, 1.0f, 100.0f, true, "pt", "Font size of the text crawl"); |
|
//Create a color picker |
|
form.makeColorPicker("Text Color", textColor, "The text color"); |
|
}); |
|
|
|
window->run([&]() { |
|
//Render the text at the center of the screen |
|
window->nvg([&](const Size& sz) { |
|
using namespace cv::v4d::nvg; |
|
clear(); |
|
fontSize(size); |
|
fontFace("sans-bold"); |
|
fillColor(Scalar(textColor.b() * 255, textColor.g() * 255, textColor.r() * 255, 255)); |
|
textAlign(NVG_ALIGN_CENTER | NVG_ALIGN_TOP); |
|
text(sz.width / 2.0, sz.height / 2.0, hw.c_str(), hw.c_str() + hw.size()); |
|
}); |
|
|
|
//Display the framebuffer in the native window |
|
return window->display(); |
|
}); |
|
} |
|
|
|
|