halcon将圆形的网格区域变成黑白棋盘

以下是使用halcon将圆形的网格区域变成黑白棋盘的示例代码：

* 生成圆形网格区域
gen_circle_contour_xld (Circle, 250, 250, 200)
gen_grid_points_circle (Circle, 20, 20, 0, GridPoints)

* 将网格点分组
group_points_distance (GridPoints, GridGroups, 15)

* 生成棋盘图案
gen_rectangle2 (Rectangle, -10, -10, 10, 10, 0)
gen_image_const (WhiteImage, "byte", 500, 500, 255)
gen_image_const (BlackImage, "byte", 500, 500, 0)

* 遍历网格区域，根据网格点分组的结果决定该位置填充黑色或白色
for i := 0 to |GridGroups|-1
    select_obj (GridGroups[i], GridPointsSelected)
    area_center (GridPointsSelected, _, _, Row, Col)
    if (i%2)=0 then
        paste_rectangle2 (BlackImage, Rectangle, Row-10, Col-10)
    else
        paste_rectangle2 (WhiteImage, Rectangle, Row-10, Col-10)
    endif
endfor

* 合并黑白图像
add_image (WhiteImage, BlackImage, ResultImage)

* 显示结果
dev_display (ResultImage)
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