Module raytracer

Package de.grogra.ray.intersection

Class Intersections

java.lang.Object

de.grogra.ray.intersection.Intersections

public class Intersections
extends Object

This is a helpful utility class for intersection calculations. It offers static mehtods to calculate intersections between a ray and a sphere, a box, a cylinder, a cone, a cone frustum, a plane or a parallelogram. For each of this cases there are two methods that can be used: get[object]_T Calculates only the distance of the ray origin to the intersection point. get[object]_IntersectionDescription Calculates diffenrent additional values of the intersection point. !!! It is important that you call get[object]_T first and with the same instance of the local varialbles object and after this second the method get[object]_IntersectionDescription. !!!

Author:

Micha

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Intersections.BoxInput
static class	Intersections.BoxIntersectionInput
static class	Intersections.BoxIntersectionLocalVariables
static class	Intersections.BoxLocalVariables
static class	Intersections.ConeInput
static class	Intersections.ConeLocalVariables
static class	Intersections.CylinderInput
static class	Intersections.CylinderLocalVariables
static class	Intersections.FrustumInput
static class	Intersections.FrustumLocalVariables
static class	Intersections.ObjectOutput
static class	Intersections.ParallelogramInput
static class	Intersections.ParallelogramLocalVariables
static class	Intersections.PlaneInput
static class	Intersections.PlaneLocalVariables
static class	Intersections.SphereInput
static class	Intersections.SphereIntersectionInput
static class	Intersections.SphereIntersectionLocalVariables
static class	Intersections.SphereLocalVariables	This class is used to speed up the sphere intersection calculation.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BOX_BACK
static final int	BOX_BOTTOM
static final int	BOX_FRONT
static final int	BOX_LEFT
static final int	BOX_RIGHT
static final int	BOX_TOP
static final int	EVALUATE_NORMAL
static final int	EVALUATE_POINT
static final int	EVALUATE_SHADER
static final int	EVALUATE_TANGET_VECTORS
static final int	EVALUATE_TRANSPARENCY
static final int	EVALUATE_UV_COORDINATES
static final int	UNDEFINED_PART

Constructor Summary

Constructors

Constructor	Description
Intersections()

Method Summary

Modifier and Type	Method	Description
static boolean	getBox_hasIntersection(Intersections.BoxIntersectionInput input, Intersections.BoxIntersectionLocalVariables local)
static void	getBox_IntersectionDescription(Intersections.BoxInput input, int params, IntersectionDescription desc, Intersections.BoxLocalVariables local)	This method calculates different intersection values. !
static boolean	getBox_T(Intersections.BoxInput input, Intersections.ObjectOutput output, Intersections.BoxLocalVariables local)
static void	getCone_IntersectionDescription(Intersections.ConeInput input, int params, IntersectionDescription desc, Intersections.ConeLocalVariables local)	This method calculates different intersection values. !
static boolean	getCone_T(Intersections.ConeInput input, Intersections.ObjectOutput output, Intersections.ConeLocalVariables local)
static void	getCylinder_IntersectionDescription(Intersections.CylinderInput input, int params, IntersectionDescription desc, Intersections.CylinderLocalVariables local)	This method calculates different intersection values. !
static boolean	getCylinder_T(Intersections.CylinderInput input, Intersections.ObjectOutput output, Intersections.CylinderLocalVariables local)
static void	getFrustum_IntersectionDescription(Intersections.FrustumInput input, int params, IntersectionDescription desc, Intersections.FrustumLocalVariables local)	This method calculates different intersection values. !
static boolean	getFrustum_T(Intersections.FrustumInput input, Intersections.ObjectOutput output, Intersections.FrustumLocalVariables local)
static void	getParallelogram_IntersectionDescription(Intersections.ParallelogramInput input, int params, IntersectionDescription desc, Intersections.ParallelogramLocalVariables local)	This method calculates different intersection values. !
static boolean	getParallelogram_T(Intersections.ParallelogramInput input, Intersections.ObjectOutput output, Intersections.ParallelogramLocalVariables local)
static void	getPlane_IntersectionDescription(Intersections.PlaneInput input, int params, IntersectionDescription desc, Intersections.PlaneLocalVariables local)	This method calculates different intersection values. !
static boolean	getPlane_T(Intersections.PlaneInput input, Intersections.ObjectOutput output, Intersections.PlaneLocalVariables local)
static boolean	getSolidCone_T(Intersections.ConeInput input, Intersections.ObjectOutput output, Intersections.ConeLocalVariables local)
static boolean	getSolidCylinder_T(Intersections.CylinderInput input, Intersections.ObjectOutput output, Intersections.CylinderLocalVariables local)
static boolean	getSolidFrustum_T(Intersections.FrustumInput input, Intersections.ObjectOutput output, Intersections.FrustumLocalVariables local)
static boolean	getSphere_hasIntersection(Intersections.SphereIntersectionInput input, Intersections.SphereIntersectionLocalVariables local)
static void	getSphere_IntersectionDescription(Intersections.SphereInput input, int params, IntersectionDescription desc, Intersections.SphereLocalVariables local)	This method calculates different intersection values. !
static boolean	getSphere_T(Intersections.SphereInput input, Intersections.ObjectOutput output, Intersections.SphereLocalVariables local)
static boolean	isPointInsideBox(Point3d point, Vector3f minValues, Vector3f maxValues)
static boolean	isPointInsideBox(Point3f point, Vector3f minValues, Vector3f maxValues)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

EVALUATE_POINT

public static final int EVALUATE_POINT

See Also:

• Constant Field Values

EVALUATE_NORMAL

public static final int EVALUATE_NORMAL

See Also:

• Constant Field Values

EVALUATE_TANGET_VECTORS

public static final int EVALUATE_TANGET_VECTORS

See Also:

• Constant Field Values

EVALUATE_UV_COORDINATES

public static final int EVALUATE_UV_COORDINATES

See Also:

• Constant Field Values

EVALUATE_TRANSPARENCY

public static final int EVALUATE_TRANSPARENCY

See Also:

• Constant Field Values

EVALUATE_SHADER

public static final int EVALUATE_SHADER

See Also:

• Constant Field Values

UNDEFINED_PART

public static final int UNDEFINED_PART

See Also:

• Constant Field Values

BOX_FRONT

public static final int BOX_FRONT

See Also:

• Constant Field Values

BOX_BACK

public static final int BOX_BACK

See Also:

• Constant Field Values

BOX_TOP

public static final int BOX_TOP

See Also:

• Constant Field Values

BOX_BOTTOM

public static final int BOX_BOTTOM

See Also:

• Constant Field Values

BOX_LEFT

public static final int BOX_LEFT

See Also:

• Constant Field Values

BOX_RIGHT

public static final int BOX_RIGHT

See Also:

• Constant Field Values

Constructor Details

Intersections

public Intersections()

Method Details

isPointInsideBox

public static boolean isPointInsideBox(Point3d point,
 Vector3f minValues,
 Vector3f maxValues)

isPointInsideBox

public static boolean isPointInsideBox(Point3f point,
 Vector3f minValues,
 Vector3f maxValues)

getSphere_hasIntersection

public static boolean getSphere_hasIntersection(Intersections.SphereIntersectionInput input,
 Intersections.SphereIntersectionLocalVariables local)

getBox_hasIntersection

public static boolean getBox_hasIntersection(Intersections.BoxIntersectionInput input,
 Intersections.BoxIntersectionLocalVariables local)

getSphere_T

public static boolean getSphere_T(Intersections.SphereInput input,
 Intersections.ObjectOutput output,
 Intersections.SphereLocalVariables local)

getSphere_IntersectionDescription

public static void getSphere_IntersectionDescription(Intersections.SphereInput input,
 int params,
 IntersectionDescription desc,
 Intersections.SphereLocalVariables local)

This method calculates different intersection values. !IMPORTANT! It is required that the method getSphere_T was executed previously.

getPlane_T

public static boolean getPlane_T(Intersections.PlaneInput input,
 Intersections.ObjectOutput output,
 Intersections.PlaneLocalVariables local)

getPlane_IntersectionDescription

public static void getPlane_IntersectionDescription(Intersections.PlaneInput input,
 int params,
 IntersectionDescription desc,
 Intersections.PlaneLocalVariables local)

This method calculates different intersection values. !IMPORTANT! It is required that the method getPlane_T was executed previously.

getParallelogram_T

public static boolean getParallelogram_T(Intersections.ParallelogramInput input,
 Intersections.ObjectOutput output,
 Intersections.ParallelogramLocalVariables local)

getParallelogram_IntersectionDescription

public static void getParallelogram_IntersectionDescription(Intersections.ParallelogramInput input,
 int params,
 IntersectionDescription desc,
 Intersections.ParallelogramLocalVariables local)

This method calculates different intersection values. !IMPORTANT! It is required that the method getParallelogram_T was executed previously.

getBox_T

public static boolean getBox_T(Intersections.BoxInput input,
 Intersections.ObjectOutput output,
 Intersections.BoxLocalVariables local)

getBox_IntersectionDescription

public static void getBox_IntersectionDescription(Intersections.BoxInput input,
 int params,
 IntersectionDescription desc,
 Intersections.BoxLocalVariables local)

This method calculates different intersection values. !IMPORTANT! It is required that the method getBox_T was executed previously.

getSolidCylinder_T

public static boolean getSolidCylinder_T(Intersections.CylinderInput input,
 Intersections.ObjectOutput output,
 Intersections.CylinderLocalVariables local)

getCylinder_T

public static boolean getCylinder_T(Intersections.CylinderInput input,
 Intersections.ObjectOutput output,
 Intersections.CylinderLocalVariables local)

getCylinder_IntersectionDescription

public static void getCylinder_IntersectionDescription(Intersections.CylinderInput input,
 int params,
 IntersectionDescription desc,
 Intersections.CylinderLocalVariables local)

This method calculates different intersection values. !IMPORTANT! It is required that the method getCylinder_T was executed previously.

getSolidCone_T

public static boolean getSolidCone_T(Intersections.ConeInput input,
 Intersections.ObjectOutput output,
 Intersections.ConeLocalVariables local)

getCone_T

public static boolean getCone_T(Intersections.ConeInput input,
 Intersections.ObjectOutput output,
 Intersections.ConeLocalVariables local)

getCone_IntersectionDescription

public static void getCone_IntersectionDescription(Intersections.ConeInput input,
 int params,
 IntersectionDescription desc,
 Intersections.ConeLocalVariables local)

This method calculates different intersection values. !IMPORTANT! It is required that the method getCone_T was executed previously.

getSolidFrustum_T

public static boolean getSolidFrustum_T(Intersections.FrustumInput input,
 Intersections.ObjectOutput output,
 Intersections.FrustumLocalVariables local)

getFrustum_T

public static boolean getFrustum_T(Intersections.FrustumInput input,
 Intersections.ObjectOutput output,
 Intersections.FrustumLocalVariables local)

getFrustum_IntersectionDescription

public static void getFrustum_IntersectionDescription(Intersections.FrustumInput input,
 int params,
 IntersectionDescription desc,
 Intersections.FrustumLocalVariables local)

This method calculates different intersection values. !IMPORTANT! It is required that the method getFrustum_T was executed previously.