A3DGE - Amateur 3D Game Engine

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Functions and Procedures

Class TPolyhedron

Fields

Unit

Declaration

type TPolyhedron = class(TModel3D)

Description

Describe a polyhedron.

TPolyhedron introduces fields, properties and methods that helps to define and manage the 3D model.

This class doesn't use textures, thus it uses less memory and it's a bit faster than TTexturedPolyhedron.

Hierarchy

TObject
TModel3D
TPolyhedron

Overview

Methods

	`function GetVertexList: TVector3DList;`
	`function GetNormalList: TVector3DList;`
	`function GetPolygonList: TPolygonList;`
	`constructor Create; override;`
	`destructor Destroy; override;`
	`procedure SetNumVertices (const aNum: Integer);`
	`procedure SetVertexList (aVectors: TVector3DList);`
	`procedure SetNumNormals (const aNum: Integer);`
	`procedure SetNormalList (aVectors: TVector3DList);`
	`procedure SetNumPolygons (const aNum: Integer);`
	`procedure SetPolygonList (aPolygons: TPolygonList);`
	`function BoundingSphereRadius: Single; override;`
	`function BoundingBox: TBox; override;`
	`PROCEDURE Render (CONST aObject: TObject3D); OVERRIDE;`

Properties

	`property NumVertices: Integer read GetNumVertices;`
	`property Vertices[constaNdx:Integer]: TVector3D read GetVertex write SetVertex;`
	`property NumNormals: Integer read GetNumNormals;`
	`property Normals[constaNdx:Integer]: TVector3D read GetNormal write SetNormal;`
	`property NumPolygons: Integer read GetNumPolygons;`
	`property Polygons[constaNdx:Integer]: TPolygon read GetPolygon write SetPolygon;`
	`property Materials: TMaterialList read fMaterials;`

Description

Methods

function GetVertexList: TVector3DList;

Get a copy of the vertices.

This is useful as access using the Vertices property might be slightly slower, specially when accessing to a lot of vertices.

See also

TPolyhedron.SetVertexList: Assign a list of vertices.
TPolyhedron.NumVertices: Number of vertices in the mesh.
TPolyhedron.Vertices: Provides access to the vertices.

function GetNormalList: TVector3DList;

Get a copy of the normals.

This is useful as access using the Normals property might be slightly slower, specially when accessing to a lot of normals.

See also

TPolyhedron.SetNormalList: Assign a list of normals.
TPolyhedron.NumNormals: Number of normals.
TPolyhedron.Normals: Provides access to the normals.

function GetPolygonList: TPolygonList;

Get a copy of the polygons.

This is useful as access using the Polygons property might be slightly slower, specially when accessing to a lot of polygons.

See also

TPolyhedron.SetPolygonList: Assign a list of polygons.
TPolyhedron.NumPolygons: Number of polygons.
TPolyhedron.Polygons: Provides access to the polygons.

	`constructor Create; override;`
Constructor.

	`destructor Destroy; override;`
Destructor.

procedure SetNumVertices (const aNum: Integer);

Set number of vertices of the polyhedron.

See also

TPolyhedron.SetVertexList: Assign a list of vertices.
TPolyhedron.GetVertexList: Get a copy of the vertices.
TPolyhedron.NumVertices: Number of vertices in the mesh.
TPolyhedron.Vertices: Provides access to the vertices.

procedure SetVertexList (aVectors: TVector3DList);

Assign a list of vertices.

This will replace all vertices with the given list. It also change the number of vertices.

See also

TPolyhedron.GetVertexList: Get a copy of the vertices.
TPolyhedron.NumVertices: Number of vertices in the mesh.
TPolyhedron.Vertices: Provides access to the vertices.

procedure SetNumNormals (const aNum: Integer);

Set number of normals used by the polyhedron.

See also

TPolyhedron.SetNormalList: Assign a list of normals.
TPolyhedron.GetNormalList: Get a copy of the normals.
TPolyhedron.NumNormals: Number of normals.
TPolyhedron.Normals: Provides access to the normals.

procedure SetNormalList (aVectors: TVector3DList);

Assign a list of normals.

This will replace all normals with the given list. It also change the number of normals.

See also

TPolyhedron.GetNormalList: Get a copy of the normals.
TPolyhedron.NumNormals: Number of normals.
TPolyhedron.Normals: Provides access to the normals.

procedure SetNumPolygons (const aNum: Integer);

Set number of polygons of the polyhedron.

See also

TPolyhedron.SetPolygonList: Assign a list of polygons.
TPolyhedron.GetPolygonList: Get a copy of the polygons.
TPolyhedron.NumPolygons: Number of polygons.
TPolyhedron.Polygons: Provides access to the polygons.

procedure SetPolygonList (aPolygons: TPolygonList);

Assign a list of polygons.

This will replace all polygons with the given list. It also change the number of polygons.

See also

TPolyhedron.GetPolygonList: Get a copy of the polygons.
TPolyhedron.NumPolygons: Number of polygons.
TPolyhedron.Polygons: Provides access to the polygons.

function BoundingSphereRadius: Single; override;

Calculate the bounding sphere radius of the model.

This method uses current Vertices to calculate the radius.

See also

TPolyhedron.Vertices: Provides access to the vertices.

function BoundingBox: TBox; override;

Returns the bounding box limits.

This method uses current Vertices to calculate the bounding box.

See also

TPolyhedron.Vertices: Provides access to the vertices.

	`PROCEDURE Render (CONST aObject: TObject3D); OVERRIDE;`
Renders the polyedron.

Properties

property NumVertices: Integer read GetNumVertices;

Number of vertices in the mesh.

See also

TPolyhedron.Vertices: Provides access to the vertices.
TPolyhedron.SetNumVertices: Set number of vertices of the polyhedron.

property Vertices[constaNdx:Integer]: TVector3D read GetVertex write SetVertex;

Provides access to the vertices.

See also

TPolyhedron.NumVertices: Number of vertices in the mesh.
TPolyhedron.SetNumVertices: Set number of vertices of the polyhedron.
TPolyhedron.SetVertexList: Assign a list of vertices.

property NumNormals: Integer read GetNumNormals;

Number of normals.

See also

TPolyhedron.Normals: Provides access to the normals.
TPolyhedron.SetNumNormals: Set number of normals used by the polyhedron.

property Normals[constaNdx:Integer]: TVector3D read GetNormal write SetNormal;

Provides access to the normals.

See also

TPolyhedron.NumVertices: Number of vertices in the mesh.
TPolyhedron.SetNumNormals: Set number of normals used by the polyhedron.
TPolyhedron.SetNormalList: Assign a list of normals.
TPolyhedron.NumPolygons: Number of polygons.
TPolyhedron.SetNumPolygons: Set number of polygons of the polyhedron.
TPolyhedron.SetPolygonList: Assign a list of polygons.

property NumPolygons: Integer read GetNumPolygons;

Number of polygons.

See also

TPolyhedron.Polygons: Provides access to the polygons.
TPolyhedron.SetNumPolygons: Set number of polygons of the polyhedron.

	`property Polygons[constaNdx:Integer]: TPolygon read GetPolygon write SetPolygon;`
Provides access to the polygons.

	`property Materials: TMaterialList read fMaterials;`
Materials used by the model.

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