opengl-picking/Selection.h at master · Rookiee/opengl-picking · GitHub

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#ifndef SELECTION_H
#define SELECTION_H

#include <vector>
using namespace std;

#include "math3d.h"

class Selection
{
public:
	Selection(void);
	~Selection(void);

	/*** 画出选择区域 ***/
	void draw_area();

	/*** 计算选中的点， 并突出显示 ***/
	void highlight_selected_pts();

	void get_selected_pts_index(vector<int> &);
	void set_config(M3DVector3f *pts, int _nr, M3DVector2f _left_bottom, M3DVector2f _right_top, M3DMatrix44f model_view, M3DMatrix44f proj, int viewport[]);

	/*** 还可以添加一些helper函数 ***/

private:
	bool drop_in_area(M3DVector3f x);
	void cal_selected_index();

private:
	M3DVector3f *pts;
	int nr;

	M3DVector2f left_bottom, right_top;
	M3DMatrix44f model_view, proj;
    int viewport[4];

	vector<int> vec_selected_pts_index;
};

#endif // endif