kercylan98
c7a6e09926
CalcRayIsIntersect 根据给定的位置和角度生成射线，检测射线是否与多边形发生碰撞 CalcRadianWithAngle 根据角度 angle 计算弧度 CalcLineSegmentIsIntersect 计算两条线段是否相交 CalcLineSegmentSlope 计算线段的斜率 CalcLineSegmentIntercept 计算线段的截距 ConvertLineSegmentGeneric 转换线段的泛型类型为特定类型 Point.Min 注释为 Max 的问题修复
63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
package geometry
|
|
|
|
import (
|
|
"github.com/kercylan98/minotaur/utils/generic"
|
|
"math"
|
|
)
|
|
|
|
// Circle 圆形
|
|
type Circle[V generic.SignedNumber] struct {
|
|
Shape[V]
|
|
}
|
|
|
|
// Radius 获取圆形半径
|
|
func (slf Circle[V]) Radius() V {
|
|
for _, point := range slf.Points() {
|
|
return CalcDistanceWithPoint(slf.Centroid(), point)
|
|
}
|
|
panic("circle without any points")
|
|
}
|
|
|
|
// Centroid 获取圆形质心位置
|
|
func (slf Circle[V]) Centroid() Point[V] {
|
|
return CalcRectangleCentroid(slf.Shape)
|
|
}
|
|
|
|
// Overlap 与另一个圆是否发生重叠
|
|
func (slf Circle[V]) Overlap(circle Circle[V]) bool {
|
|
return slf.CentroidDistance(circle) < slf.Radius()+circle.Radius()
|
|
}
|
|
|
|
// Area 获取圆形面积
|
|
func (slf Circle[V]) Area() V {
|
|
return V(math.Pi * math.Pow(float64(slf.Radius()), 2))
|
|
}
|
|
|
|
// Length 获取圆的周长
|
|
func (slf Circle[V]) Length() V {
|
|
return V(2 * math.Pi * float64(slf.Radius()))
|
|
}
|
|
|
|
// CentroidDistance 计算与另一个圆的质心距离
|
|
func (slf Circle[V]) CentroidDistance(circle Circle[V]) V {
|
|
return CalcCircleCentroidDistance(slf, circle)
|
|
}
|
|
|
|
// NewCircle 通过传入圆的半径和需要的点数量，生成一个圆
|
|
func NewCircle[V generic.SignedNumber](radius V, points int) Circle[V] {
|
|
angle := 2.0 * math.Pi / float64(points)
|
|
var shape = make(Shape[V], points)
|
|
for i := 0; i < points; i++ {
|
|
curAngle := float64(i) * angle
|
|
x := radius * V(math.Cos(curAngle))
|
|
y := radius * V(math.Sin(curAngle))
|
|
shape = append(shape, NewPoint(x, y))
|
|
}
|
|
return shape.ToCircle()
|
|
}
|
|
|
|
// CalcCircleCentroidDistance 计算两个圆质心距离
|
|
func CalcCircleCentroidDistance[V generic.SignedNumber](circle1, circle2 Circle[V]) V {
|
|
return CalcDistanceWithPoint(circle1.Centroid(), circle2.Centroid())
|
|
}
|