类型 Point
API 文档由 Go 源码生成，内容为英文。
type Point struct {
X float32
Y float32
}Point is one logical-pixel coordinate measured from the top-left.
API 文档由 Go 源码生成，内容为英文。
type Point struct {
X float32
Y float32
}Point is one logical-pixel coordinate measured from the top-left.