orx-mesh/org.openrndr.extra.mesh/IndexedPolygon

IndexedPolygon

data class IndexedPolygon(val positions: List<Int>, val textureCoords: List<Int>, val colors: List<Int>, val normals: List<Int>, val tangents: List<Int>, val bitangents: List<Int>) : IIndexedPolygon(source)

Represents a polygon defined by indices corresponding to vertex data such as positions, texture coordinates, colors, normals, tangents, and bitangents. It can be used to describe a geometric shape for rendering or processing in 3D graphics or geometry applications.

Constructors

IndexedPolygon

constructor(positions: List<Int>, textureCoords: List<Int>, colors: List<Int>, normals: List<Int>, tangents: List<Int>, bitangents: List<Int>)

Properties

bitangents

open override val bitangents: List<Int>

List of indices referencing vertex bitangents.

colors

open override val colors: List<Int>

List of indices referencing vertex colors.

normals

open override val normals: List<Int>

List of indices referencing vertex normals.

positions

open override val positions: List<Int>

List of indices referencing the vertex positions.

tangents

open override val tangents: List<Int>

List of indices referencing vertex tangents.

textureCoords

open override val textureCoords: List<Int>

List of indices referencing the texture coordinates.

Functions

base

open fun base(vertexData: IVertexData): Matrix44

isConvex

open fun isConvex(vertexData: IVertexData): Boolean

Determines if the polygon defined by the given vertex data is convex.

isPlanar

open fun isPlanar(vertexData: IVertexData, eps: Double = 0.01): Boolean

Checks if the polygon defined by the given vertex data is planar.

normal

open fun normal(vertexData: IVertexData): Vector3

Computes the normal vector of the polygon based on the given vertex data.

point

fun IIndexedPolygon.point(vertexData: IVertexData, barycentric: Vector3): Point

Computes a Point by interpolating vertex attributes from a 3D polygon using barycentric coordinates.

position

fun IIndexedPolygon.position(vertexData: IVertexData, barycentric: Vector3): Vector3

Computes the 3D position of a point in a polygon using barycentric coordinates.

shiftIndices

fun shiftIndices(positions: Int = 0, textureCoords: Int = 0, colors: Int = 0, normals: Int = 0, tangents: Int = 0, bitangents: Int = 0): IndexedPolygon

Shifts the indices for position, texture coordinates, colors, normals, tangents, and bitangents by the specified amounts and returns a new IndexedPolygon with the updated indices.

toPolygon

open override fun toPolygon(vertexData: IVertexData): Polygon

Converts the provided vertex data into a polygon representation.

triangulate

fun triangulate(vertexData: IVertexData): List<IndexedPolygon>

Triangulates the polygon represented by the provided vertex data.