a = {
["测试1"] = {{ 634, 573, 0xb99d79},{ 634, 574, 0xc8a76f},{ 634, 575, 0xc8a76e},{ 634, 576, 0xd7ae75},{ 634, 583, 0xc5964d},{ 634, 589, 0x937037},{ 644, 588, 0xfffdee},{ 636, 597, 0x957340},{ 640, 597, 0xeab45c}},
["测试2"] = {{ 634, 573, 0xb99d79},{ 634, 574, 0xc8a76f},{ 634, 575, 0xc8a76e},{ 634, 576, 0xd7ae75},{ 634, 583, 0xc5964d},{ 634, 589, 0x937037},{ 644, 588, 0xfffdee},{ 636, 597, 0x957340},{ 640, 597, 0xeab45c}},
~~~假如很多~~
["测试999"] = {{ 634, 573, 0xb99d79},{ 634, 574, 0xc8a76f},{ 634, 575, 0xc8a76e},{ 634, 576, 0xd7ae75},{ 634, 583, 0xc5964d},{ 634, 589, 0x937037},{ 644, 588, 0xfffdee},{ 636, 597, 0x957340},{ 640, 597, 0xeab45c}},
}
怎么能准确地获取到需要的坐标