pluginbase.Helpers.Geometry.Sphere Struct Reference

Inheritance diagram for pluginbase.Helpers.Geometry.Sphere:

Public Member Functions
	Sphere (Sphere sphere)
	Sphere (Vector3d point, double radius)
	Sphere (double x, double y, double z, double radius)
bool	Contains (Vector3d pt)
double	Distance (Vector3d pt)
bool	Intersects (Ray ray, out double dist)
override string	ToString ()

Public Attributes
Vector3d	Point
double	Radius

Properties
double	Volume [get]

Constructor & Destructor Documentation

Sphere() [1/3]

pluginbase.Helpers.Geometry.Sphere.Sphere

(

Sphere

sphere

)

        {
            this.Point = sphere.Point;
            this.Radius = sphere.Radius;
        }

Sphere() [2/3]

pluginbase.Helpers.Geometry.Sphere.Sphere	(	Vector3d	point,
		double	radius
	)

        {
            this.Point = point;
            this.Radius = radius;
        }

Sphere() [3/3]

pluginbase.Helpers.Geometry.Sphere.Sphere	(	double	x,
		double	y,
		double	z,
		double	radius
	)

        {
            this.Point = new Vector3d(x, y, z);
            this.Radius = radius;
        }

Member Function Documentation

Contains()

bool pluginbase.Helpers.Geometry.Sphere.Contains

(

Vector3d

pt

)

        {
            return (this.Point - pt).Length < this.Radius;
        }

Distance()

double pluginbase.Helpers.Geometry.Sphere.Distance

(

Vector3d

pt

)

        {
            return (this.Point - pt).Length;
        }

Intersects()

bool pluginbase.Helpers.Geometry.Sphere.Intersects	(	Ray	ray,
		out double	dist
	)

Implements pluginbase.Helpers.Geometry.IIntersectable.

        {
            var vpc = this.Point - ray.Point;

            if (Vector3d.Dot(vpc, ray.Direction) < 0.0)
            {
                //Sphere is behind origin point, but need to test
                if (vpc.Length > this.Radius)
                {
                    dist = 0.0;
                    return false;
                }

                Vector3d pc = ray.ProjectPoint(this.Point);
                double pcLen = (pc - this.Point).Length;
                double pcDist = Math.Sqrt(this.Radius*this.Radius - pcLen*pcLen);
                dist = pcDist - (pc - ray.Point).Length;
                return true;
            }

            Vector3d projC = ray.ProjectPoint(this.Point);
            if ((this.Point - projC).Length > this.Radius)
            {
                dist = 0.0;
                return false;
            }

            double pcToC = (projC - this.Point).Length;
            double projDist = Math.Sqrt(this.Radius * this.Radius - pcToC * pcToC);

            if (vpc.Length > this.Radius) //origin outside the sphere
            {
                dist = (projC - ray.Point).Length - projDist;
            }
            else
            {
                dist = (projC - ray.Point).Length + projDist;
            }
            return true;
        }

ToString()

override string pluginbase.Helpers.Geometry.Sphere.ToString

(

)

        {
            return string.Format("[Sphere: Point={0}, Radius={1}]", Point, Radius);
        }

Member Data Documentation

Point

Vector3d pluginbase.Helpers.Geometry.Sphere.Point

Radius

double pluginbase.Helpers.Geometry.Sphere.Radius

Property Documentation

Volume

double pluginbase.Helpers.Geometry.Sphere.Volume

get

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The documentation for this struct was generated from the following file:

• pluginbase/Helpers/Geometry/Sphere.cs