# Exercise 10: Use of texture

### Using Geometry with pre-generated texture coordinates (eg Sphere).

Load a jpg image as a texture, associate it with an Appearance, then create a Sphere with that appearance.

 Texture Sphere Textured Sphere

## Tips

Appearance app = new Appearance();
app.setTexture( ??? );
Sphere sphere = new Sphere(1.0f, Sphere.GENERATE_TEXTURE_COORDS, app);

To load the texture use the TextureLoader class in the com.sun.j3d.utils.image package.

### Creating your own Geometry and texture coordinates (eg IndexedTriangleArray).

Same as the previous exercise but here we create our own geometry and texture coordinates.

 Texture Indexed Triangle Array Textured Indexed Traingle Array

## Tips

private Geometry createGeometry()
{
IndexedTriangleArray ita = new IndexedTriangleArray(4, IndexedTriangleArray.COORDINATES | IndexedTriangleArray.TEXTURE_COORDINATE_2, 6);

ita.setCoordinate(0, new Point3d(0, 0, 0));
ita.setCoordinate(1, new Point3d(1, 0, 0));
ita.setCoordinate(2, new Point3d(0, 1, 0));
ita.setCoordinate(3, new Point3d(1, 1, 0));

ita.setCoordinateIndex(0, 0);
ita.setCoordinateIndex(1, 1);
ita.setCoordinateIndex(2, 2);

ita.setCoordinateIndex(3, 1);
ita.setCoordinateIndex(4, 3);
ita.setCoordinateIndex(5, 2);

ita.setTextureCoordinate( ??? ); // repeat 4 times

ita.setTextureCoordinateIndex( ??? ); // repeat 6 times

return ita;
}

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