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28 lines
752 B
28 lines
752 B
#include <opencv2/v4d/v4d.hpp> |
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int main() { |
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using namespace cv; |
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using namespace cv::viz; |
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Ptr<V4D> v4d = V4D::make(Size(1280, 720), "Vector Graphics"); |
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v4d->setVisible(true); |
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//Creates a NanoVG context and draws a cross-hair on the framebuffer |
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v4d->nvg([](const Size& sz) { |
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//Calls from this namespace may only be used inside a nvg context |
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using namespace cv::viz::nvg; |
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//Draws a cross hair |
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beginPath(); |
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strokeWidth(3.0); |
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strokeColor(Scalar(0,0,255,255)); //BGRA |
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moveTo(sz.width/2.0, 0); |
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lineTo(sz.width/2.0, sz.height); |
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moveTo(0, sz.height/2.0); |
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lineTo(sz.width, sz.height/2.0); |
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stroke(); |
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}); |
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//Display the framebuffer in the native window in an endless loop |
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v4d->run([=](){ return v4d->display(); }); |
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} |
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