[Game] 游戏开发中的数学和物理算法：点之间的距离

float Distance2D(Point2D p1,Point2D p2)
{
    float dx=p1.x-p2.x;
    float dy=p1.y-p2.y;
    float distance=sqrt(pow(dx,2)+pow(dy,2));
    return distance;
}

float Distance3D(Point3D p1,Point3D p2)
{
    float dx=p1.x-p2.x;
    float dy=p1.y-p2.y;
    float dz=p1.z-p2.z;
    float distance=sqrt(pow(dx,2)+pow(dy,2)+pow(dz,2));
    return distance;
}

公式：
2D：



3D:

Point2D MidPoint2D(Point2D p1,Point2D p2)
{
    float sx=p1.x+p2.x;
    float sy=p1.y+p2.y;
    Point2D midPoint;
    midPoint.x=sx/2;
    midPoint.y=sy/2;
    return midPoint;
}

Point3D Distance3D(Point3D p1,Point3D p2)
{
    float sx=p1.x+p2.x;
    float sy=p1.y+p2.y;
    float sz=p1.z+p2.z;
    Point3D midPoint;
    midPoint.x=sx/2;
    midPoint.y=sy/2;
    midPoint.z=sz/2;
    return midPoint;
}