public struct PointF : IEquatable<PointF>Optimized for graphics programming where high performance with moderate precision is required. Provides all essential vector operations while maintaining memory efficiency.
针对需要中等精度高性能的图形编程而优化， 提供了所有必要的向量运算，同时保持内存效率。
var pointA = new PointF(1.5f, 2.5f);
var pointB = new PointF(3.0f, 4.0f);
float distance = (float)pointA.DistanceTo(pointB);
PointF sum = pointA + pointB;| PointF | Represents a single-precision floating-point 2D point with geometric operations 表示具有几何运算的单精度浮点二维点 |
| Add | Vector addition (component-wise) 向量加法（分量相加） |
| CrossProduct(PointF) | Calculates cross product with another vector (returns double precision) 计算与另一个向量的叉积（返回双精度） |
| CrossProduct(PointF, PointF) | Calculates 2D cross product magnitude (returns double precision) 计算二维叉积大小（返回双精度） |
| Distance | Calculates Euclidean distance between two points (returns double precision) 计算两点之间的欧几里得距离（返回双精度） |
| DistanceTo | Calculates distance to another point (returns double precision) 计算到另一个点的距离（返回双精度） |
| DotProduct(PointF) | Calculates dot product with another vector (returns double precision) 计算与另一个向量的点积（返回双精度） |
| DotProduct(PointF, PointF) | Calculates dot product of two vectors (returns double precision) 计算两个向量的点积（返回双精度） |
| Equals | Determines if two points are exactly equal 确定两个点是否完全相等 |
| GetType | Gets the Type of the current instance. (继承自 Object。) |
| Multiply | Scales the point by a double-precision factor (returns float) 使用双精度因子缩放点（返回浮点） |
| Negate | Negates both coordinates (additive inverse) 对两个坐标取反（加法逆元） |
| Plus | Identity operation - returns the point unchanged 恒等运算 - 返回未改变的点 |
| Subtract | Vector subtraction (component-wise) 向量减法（分量相减） |
| ToString |
Returns a string representation of the point
返回点的字符串表示形式
(重写 ValueTypeToString) |
| Addition(PointF, PointF) | Vector addition operator 向量加法运算符 |
| Multiply(PointF, Double) | Scalar multiplication operator 标量乘法运算符 |
| Subtraction(PointF, PointF) | Vector subtraction operator 向量减法运算符 |
| UnaryNegation(PointF) | Unary negation operator 一元取反运算符 |
| UnaryPlus(PointF) | Unary plus operator - returns the point unchanged 一元加运算符 - 返回未改变的点 |
| X | The X-coordinate (single-precision floating-point) X坐标（单精度浮点） |
| Y | The Y-coordinate (single-precision floating-point) Y坐标（单精度浮点） |