Class InsidenessCalculator

This class contains functions for determining whether a point is within an open mesh.

It is intended for use with the corners of voxel cubes, as seen in Tileset.

Inheritance

System.Object

InsidenessCalculator

Inherited Members

System.Object.ToString()

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

Namespace: CarbideFunction.Wildtile

Syntax

public static class InsidenessCalculator

Methods

GetLineIntersectionZDistance(Quaternion, Vector3, Triangle)

This function calculates the distance of the line to the contact point on the triangle.

Declaration

public static float GetLineIntersectionZDistance(Quaternion rayInverseOrientation, Vector3 rayOffset, Triangle tri)

Parameters

Type	Name	Description
Quaternion	rayInverseOrientation	The quaternion that rotates the mesh into ray space, so that the ray points along the positive Z axis.
Vector3	rayOffset	The vector that the ray starts at after rotating to ray space.
Triangle	tri	The triangle to test against.

Returns

Type	Description
System.Single

IsWithinHalfSpace(Vector2, Vector2, Vector2)

This function calculates if a 2D point is within the half space defined by two vertices.

Declaration

public static bool IsWithinHalfSpace(Vector2 queryPoint, Vector2 vertex0, Vector2 vertex1)

Parameters

Type	Name	Description
Vector2	queryPoint
Vector2	vertex0
Vector2	vertex1

Returns

Type

Description

System.Boolean

Argument state Return value The two vertices are the same Returns true The two vertices are different and not colinear with queryPoint Returns true if queryPoint is clockwise of vertex1 from vertex0. Otherwise, returns false. The two vertices are different and colinear with queryPoint Returns true or false arbitrarily, but deterministically. Swapping vertex0 and vertex1 is guaranteed to give the opposite result.

IsWithinTriangle(Vector2, Vector2, Vector2, Vector2)

This function calculates if a 2D point is within a 2D triangle.

Declaration

public static InsidenessCalculator.LineIntersectionResult IsWithinTriangle(Vector2 queryPoint, Vector2 vertex0, Vector2 vertex1, Vector2 vertex2)

Parameters

Type	Name	Description
Vector2	queryPoint
Vector2	vertex0
Vector2	vertex1
Vector2	vertex2

Returns

Type	Description
InsidenessCalculator.LineIntersectionResult	If two triangles share vertices but do not overlap, this function is guaranteed to return non-Missed for at most one of the triangles - there are no cases where a ray will hit two smooth triangles.

LineIntersectionWithTri(Quaternion, Vector2, Triangle)

This function calculates whether a 2D point projected along the Z axis hits a triangle, and, if so, which side of the triangle it hits.

Declaration

public static InsidenessCalculator.LineIntersectionResult LineIntersectionWithTri(Quaternion rayInverseOrientation, Vector2 ray2dOffset, Triangle tri)

Parameters

Type	Name	Description
Quaternion	rayInverseOrientation	The quaternion that rotates the mesh into ray space, so that the ray points along the positive Z axis.
Vector2	ray2dOffset	The 2D vector to project the ray along the Z axis after rotating to ray space.
Triangle	tri	The triangle to test against.

Returns

Type	Description
InsidenessCalculator.LineIntersectionResult

LineSegmentIntersectionWithTri(Quaternion, Vector3, Triangle)

This function detects if a ray intersects with a triangle, and, if so, which side of the triangle it hits.

This function uses pre-processed parameters so that the caller can precalculate the ray parameters before passing them to many functions. This obfuscates the code but also speeds it up.

Declaration

public static InsidenessCalculator.LineIntersectionResult LineSegmentIntersectionWithTri(Quaternion rayInverseOrientation, Vector3 rayOffset, Triangle tri)

Parameters

Type	Name	Description
Quaternion	rayInverseOrientation	The quaternion that rotates the mesh into ray space, so that the ray points along the positive Z axis.
Vector3	rayOffset	The vector that the ray starts at after rotating to ray space.
Triangle	tri	The triangle to test against.

Returns

Type	Description
InsidenessCalculator.LineIntersectionResult