1 files changed, 143 insertions, 0 deletions
diff --git a/tracker-wii/wii_point_extractor.cpp b/tracker-wii/wii_point_extractor.cpp
new file mode 100644
index 00000000..f1fc013d
--- /dev/null
+++ b/tracker-wii/wii_point_extractor.cpp
@@ -0,0 +1,143 @@
+/*
+* Copyright (c) 2017-2018 Wei Shuai <cpuwolf@gmail.com>
+*
+* Permission to use, copy, modify, and/or distribute this software for any
+* purpose with or without fee is hereby granted, provided that the above
+* copyright notice and this permission notice appear in all copies.
+*/
+
+#include "wii_point_extractor.h"
+
+#include "point_tracker.h"
+#include "wii_frame.hpp"
+
+#include "cv/numeric.hpp"
+#include "compat/math.hpp"
+
+#include <opencv2/videoio.hpp>
+
+#undef PREVIEW
+//#define PREVIEW
+
+#if defined PREVIEW
+#   include <opencv2/highgui.hpp>
+#endif
+
+#include <cmath>
+#include <algorithm>
+#include <cinttypes>
+#include <memory>
+
+#include <QDebug>
+
+using namespace types;
+using namespace pt_module;
+
+
+WIIPointExtractor::WIIPointExtractor(const QString& module_name) : s(module_name)
+{
+
+}
+
+//define a temp draw function
+void WIIPointExtractor::_draw_point(cv::Mat& preview_frame, const vec2& p, const cv::Scalar& color, int thinkness)
+{
+	static constexpr int len = 9;
+
+	cv::Point p2(iround(p[0] * preview_frame.cols + preview_frame.cols / 2),
+		iround(-p[1] * preview_frame.cols + preview_frame.rows / 2));
+
+	cv::line(preview_frame,
+		cv::Point(p2.x - len, p2.y),
+		cv::Point(p2.x + len, p2.y),
+		color,
+		thinkness);
+	cv::line(preview_frame,
+		cv::Point(p2.x, p2.y - len),
+		cv::Point(p2.x, p2.y + len),
+		color,
+		thinkness);
+};
+
+bool WIIPointExtractor::_draw_points(cv::Mat& preview_frame, const struct wii_info &wii, std::vector<vec2>& points)
+{
+	const float W = 1024.0f;
+	const float H = 768.0f;
+	points.reserve(4);
+	points.clear();
+
+	for (unsigned index = 0; index < 4; index++)
+	{
+		const struct wii_info_points &dot = wii.Points[index];
+		if (dot.bvis) {
+			//qDebug() << "wii:" << dot.RawX << "+" << dot.RawY;
+			//anti-clockwise rotate the 2D point
+			const float RX = W - dot.ux;
+			const float RY = H - dot.uy;
+			//vec2 dt((dot.RawX - W / 2.0f) / W, -(dot.RawY - H / 2.0f) / W);
+			//vec2 dt((RX - W / 2.0f) / W, -(RY - H / 2.0f) / W);
+			//vec2 dt((2.0f*RX - W) / W, -(2.0f*RY - H ) / W);
+			vec2 dt;
+			std::tie(dt[0], dt[1]) = to_screen_pos(RX, RY, W, H);
+
+			points.push_back(dt);
+			_draw_point(preview_frame, dt, cv::Scalar(0, 255, 0), dot.isize);
+		}
+	}
+	const bool success = points.size() >= PointModel::N_POINTS;
+
+	return success;
+}
+
+void WIIPointExtractor::_draw_bg(cv::Mat& preview_frame, const struct wii_info &wii)
+{
+	//draw battery status
+	cv::line(preview_frame,
+		cv::Point(0, 0),
+		cv::Point(preview_frame.cols*wii.BatteryPercent / 100, 0),
+		(wii.bBatteryDrained ? cv::Scalar(255, 0, 0) : cv::Scalar(0, 140, 0)),
+		2);
+
+	//draw horizon
+	int pdelta = iround((preview_frame.rows / 4) * tan((wii.Pitch)* M_PI / 180.0f));
+	int rdelta = iround((preview_frame.cols / 4) * tan((wii.Roll)* M_PI / 180.0f));
+
+	cv::line(preview_frame,
+		cv::Point(0, preview_frame.rows / 2 + rdelta - pdelta),
+		cv::Point(preview_frame.cols, preview_frame.rows / 2 - rdelta - pdelta),
+		cv::Scalar(80, 80, 80),
+		1);
+}
+
+
+void WIIPointExtractor::extract_points(const pt_frame& frame_, pt_preview& preview_frame_, std::vector<vec2>& points)
+{
+	const cv::Mat& frame = frame_.as_const<WIIFrame>()->mat;
+	const struct wii_info& wii = frame_.as_const<WIIFrame>()->wii;
+	cv::Mat& preview_frame = *preview_frame_.as<WIIPreview>();
+
+	//create a blank frame
+	//cv::Mat blank_frame(preview_frame.cols, preview_frame.rows, CV_8UC3, cv::Scalar(0, 0, 0));
+	//cv::cvtColor(_frame, _frame2, cv::COLOR_BGR2BGRA);
+	//cv::resize(blank_frame, preview_frame, cv::Size(preview_frame.cols, preview_frame.rows), 0, 0, cv::INTER_NEAREST);
+
+	switch (wii.status) {
+	case wii_cam_data_change:
+		_draw_bg(preview_frame, wii);
+		_draw_points(preview_frame, wii, points);
+		break;
+	case wii_cam_wait_for_connect:
+		char txtbuf[64];
+		sprintf(txtbuf, "%s", "wait for WIImote");
+		//draw wait text
+		cv::putText(preview_frame,
+			txtbuf,
+			cv::Point(preview_frame.cols / 10, preview_frame.rows / 2),
+			cv::FONT_HERSHEY_SIMPLEX,
+			1,
+			cv::Scalar(255, 255, 255),
+			1);
+		break;
+	}
+}
+