Class Tri

Represents a triangle in the mesh decimation algorithm. Stores triangle vertices, normals, UVs, and adjacency information.

Inheritance

object

Tri

Namespace: NWH.DWP2.MeshDecimation

Assembly: NWH.DWP2.dll

Syntax

public class Tri

Constructors

| Edit this page View Source

Tri(int, Vert, Vert, Vert, Vector2, Vector2, Vector2)

Initializes a new triangle with vertices, texture coordinates, and establishes vertex relationships.

Declaration

public Tri(int id, Vert v0, Vert v1, Vert v2, Vector2 uv0, Vector2 uv1, Vector2 uv2)

Parameters

Type	Name	Description
int	id	Unique identifier for this triangle.
Vert	v0	First vertex.
Vert	v1	Second vertex.
Vert	v2	Third vertex.
Vector2	uv0	Texture coordinate for first vertex.
Vector2	uv1	Texture coordinate for second vertex.
Vector2	uv2	Texture coordinate for third vertex.

Fields

| Edit this page View Source

defaultIndex0

Original mesh vertex index for vertex 0.

Declaration

public int defaultIndex0

Field Value

Type	Description
int

| Edit this page View Source

defaultIndex1

Original mesh vertex index for vertex 1.

Declaration

public int defaultIndex1

Field Value

Type	Description
int

| Edit this page View Source

defaultIndex2

Original mesh vertex index for vertex 2.

Declaration

public int defaultIndex2

Field Value

Type	Description
int

| Edit this page View Source

deleted

Whether this triangle has been deleted.

Declaration

public bool deleted

Field Value

Type	Description
bool

| Edit this page View Source

id

Unique identifier for this triangle.

Declaration

public int id

Field Value

Type	Description
int

| Edit this page View Source

normal

Face normal vector.

Declaration

public Vector3 normal

Field Value

Type	Description
Vector3

| Edit this page View Source

uv0

Texture coordinate for vertex 0.

Declaration

public Vector2 uv0

Field Value

Type	Description
Vector2

| Edit this page View Source

uv1

Texture coordinate for vertex 1.

Declaration

public Vector2 uv1

Field Value

Type	Description
Vector2

| Edit this page View Source

uv2

Texture coordinate for vertex 2.

Declaration

public Vector2 uv2

Field Value

Type	Description
Vector2

| Edit this page View Source

v0

First vertex of the triangle.

Declaration

public Vert v0

Field Value

Type	Description
Vert

| Edit this page View Source

v1

Second vertex of the triangle.

Declaration

public Vert v1

Field Value

Type	Description
Vert

| Edit this page View Source

v2

Third vertex of the triangle.

Declaration

public Vert v2

Field Value

Type	Description
Vert

| Edit this page View Source

vn0

Vertex normal for vertex 0.

Declaration

public Vector3 vn0

Field Value

Type	Description
Vector3

| Edit this page View Source

vn1

Vertex normal for vertex 1.

Declaration

public Vector3 vn1

Field Value

Type	Description
Vector3

| Edit this page View Source

vn2

Vertex normal for vertex 2.

Declaration

public Vector3 vn2

Field Value

Type	Description
Vector3

Methods

| Edit this page View Source

HasVertex(Vert)

Checks if this triangle contains a given vertex.

Declaration

public bool HasVertex(Vert v)

Parameters

Type	Name	Description
Vert	v	Vertex to check.

Returns

Type	Description
bool	True if the triangle contains the vertex, false otherwise.

| Edit this page View Source

RecalculateAvgNormals(float)

Recalculates averaged vertex normals based on adjacent face normals. Only called when normal recalculation is enabled. Smooths normals even at UV seams.

Declaration

public void RecalculateAvgNormals(float smoothAngleDot)

Parameters

Type	Name	Description
float	smoothAngleDot	Dot product threshold for normal smoothing.

| Edit this page View Source

RecalculateNormal()

Recalculates the face normal using cross product of edge vectors.

Declaration

public void RecalculateNormal()

| Edit this page View Source

RemoveTriangle(History)

Removes this triangle and updates vertex relationships. Records the removal in history for potential undo operations.

Declaration

public void RemoveTriangle(History his)

Parameters

Type	Name	Description
History	his	History object to record the removal.

| Edit this page View Source

ReplaceVertex(Vert, Vert, Vector2, Vector3, History)

Replaces a vertex in this triangle with a new vertex and updates all relationships. Records the replacement in history for potential undo operations.

Declaration

public void ReplaceVertex(Vert vo, Vert vnew, Vector2 newUV, Vector3 newVN, History his)

Parameters

Type	Name	Description
Vert	vo	Old vertex to be replaced.
Vert	vnew	New vertex to replace with.
Vector2	newUV	New texture coordinate.
Vector3	newVN	New vertex normal.
History	his	History object to record the replacement.

| Edit this page View Source

SetDefaultIndices(int, int, int)

Sets the original mesh vertex indices for this triangle.

Declaration

public void SetDefaultIndices(int n0, int n1, int n2)

Parameters

Type	Name	Description
int	n0	Original index for vertex 0.
int	n1	Original index for vertex 1.
int	n2	Original index for vertex 2.

| Edit this page View Source

normalAt(Vert)

Gets the vertex normal for a given vertex.

Declaration

public Vector3 normalAt(Vert v)

Parameters

Type	Name	Description
Vert	v	Vertex to query.

Returns

Type	Description
Vector3	Vertex normal for the vertex, or zero vector if not found.

| Edit this page View Source

setUV(Vert, Vector2)

Sets the texture coordinate for a given vertex.

Declaration

public void setUV(Vert v, Vector2 newuv)

Parameters

Type	Name	Description
Vert	v	Vertex to update.
Vector2	newuv	New texture coordinate.

| Edit this page View Source

setVN(Vert, Vector3)

Sets the vertex normal for a given vertex.

Declaration

public void setVN(Vert v, Vector3 newNormal)

Parameters

Type	Name	Description
Vert	v	Vertex to update.
Vector3	newNormal	New vertex normal.

| Edit this page View Source

uvAt(Vert)

Gets the texture coordinate for a given vertex.

Declaration

public Vector2 uvAt(Vert v)

Parameters

Type	Name	Description
Vert	v	Vertex to query.

Returns

Type	Description
Vector2	Texture coordinate for the vertex, or zero vector if not found.