Geometry Objects - Interactive Web-Based Virtual Reality with Java 3D - page 36

Figure 5. Geometry subclasses

Vertex 0

Vertex 2 Vertex 4

Vertex 0 Vertex 4

Vertex 2

Vertex 1 Vertex 3 Vertex 5

Vertex 5

Vertex 1 Vertex 3

PointArray

LineArray

Vertex 0 Vertex 2

Vertex 0

Vertex 2 Vertex 4

Vertex 1

Vertex 3

Vertex 5

Vertex 1

TriangleArray

Vertex 3

QuadArray

Figure 6. Specifying vertices of Shape3D objects

XArray myArray = new XArray(vertexCount, vertexFormat);
// Constructs and initializes an object with number of vertices given by vertexCount and
// type of components present in the vertex is given by vertexFormat.
// There are 4 types of flags that correspond to the mask in vertexFormat. They are
// coordinates, normals, one of color_3 or color_4 (without or with //color information);
// and one of texture_coordinate_2, texture_coordinate_3 or //texture_coordinate_4 (2D, // // 3D or 4D).
XArray myArray = new XArray(vertexCount1, vertexFormat2,
texCoordSetCount, texCoordSetMap);
// Constructs and initializes an object with number of vertices given by vertexCount1 and
// type of components present in vertex is given by vertexFormat. The number of texture // coordinate is given by the texCoordSetCount
and an array that maps texture coordinate // sets to texture units is given by texCoordSetMap.

Figure 7. Right hand coordinate system

+Y

+X

+Z