35 lines
963 B
Go
35 lines
963 B
Go
package g2d
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// PositionToArray 将坐标转换为x、y的数组
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func PositionToArray(x, y int) [2]int {
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return [2]int{x, y}
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}
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// PositionArrayToXY 将坐标数组转换为x和y坐标
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func PositionArrayToXY(position [2]int) (x, y int) {
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return position[0], position[1]
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}
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// PositionClone 克隆一个坐标数组
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func PositionClone(position [2]int) [2]int {
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return [2]int{position[0], position[1]}
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}
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// GetAdjacentPositions 获取一个矩阵中，特定位置相邻的最多四个方向的位置
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func GetAdjacentPositions[T any](matrix [][]T, x, y int) (result [][2]int) {
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width, height := len(matrix), len(matrix[0])
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if tx := x - 1; tx >= 0 {
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result = append(result, PositionToArray(tx, y))
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}
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if tx := x + 1; tx < width {
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result = append(result, PositionToArray(tx, y))
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}
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if ty := y - 1; ty >= 0 {
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result = append(result, PositionToArray(x, ty))
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}
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if ty := y + 1; ty < height {
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result = append(result, PositionToArray(x, ty))
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}
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return
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}
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