Java 3D Colour Mapped Surface Applet

Java 3D Colour Mapped Surface Applet

This applet has been successfully tested with Netscape and Internet Explorer.

Applet controls.
Steps that were performed for it's construction.

The following software is required for Java 3D to work properly:

1- Java Runtime Environment (JRE) Plug-in. Available Here
2- Java 3D Runtime for the JRE. Available Here

Applet Controls:

First click on the applet to set the GUI focus.

- Number keys 1 - 7 control the background colour.
- Dragging the mouse left and right rotates the surface's orientation by its Y-axis.
- Dragging the mouse up and down zooms the view platform in and out of the scene.

The following steps were performed for it's construction:

1. First a suitable contour map was found, just like the one above.

8625	8720	9080	9504	9800	9980	10160	10320	10480	10880
8616	8840	9280	9680	10160	10200	10280	10440	10560	10520
8672	8944	9376	9800	10080	10256	10504	10780	10600	10340
8840	8910	9260	9496	9680	9850	10240	10400	10480	10160
8700	9088	9280	9500	9660	9800	10010	10216	10440	10100
8920	9230	9640	9760	9900	9880	9880	10160	10440	10100
9200	9400	9700	10010	10080	10080	10070	10224	10330	10000
9344	9640	9840	10160	10440	10320	10400	10440	10300	10080
9296	9510	9800	10060	10320	10680	10800	10640	10300	10090
9384	9620	9820	10060	10320	10640	10800	10500	10200	9980

2. A ten by ten matrix of altitude values was extracted from the contours.

3. A corresponding wireframe model was produced with Java 3D,
hard-coding the altitude values within the program code.

4. A Java class was created for calculating the required geometry
and normals for a flat shaded version of the surface.

5. An additional Java class was created for calculating the required
geometry and normals for a Gouraud shaded version.

100	0	0	0	10	0	0	20	0	0
0	0	10	10	20	10	10	40	20	0
0	100	20	20	20	20	20	50	90	20
0	10	20	50	70	50	40	10	50	0
10	20	20	70	100	80	20	20	10	0
0	10	20	50	70	50	20	10	0	0
0	10	20	20	50	20	20	10	0	0
80	0	10	10	20	10	10	0	50	0
100	0	0	0	10	0	0	10	100	10
50	0	0	0	0	0	0	0	0	50

6. A table was constructed to contain imaginary data for the population of a certain plant species.

7. The previous Java class was extended to produce a colour mapping,
to present the above data about the plant populations across the surface.

8. Finally a different colour scheme was used with also a nice bright wireframe
overlay. Notice that the shininess has been slightly increased as well.

100	0	0	0	10	0	0	20	0	0
0	0	10	10	20	10	10	40	20	0
0	100	20	20	20	20	20	50	90	20
0	10	20	50	70	50	40	10	50	0
10	20	20	70	100	80	20	20	10	0
0	10	20	50	70	50	20	10	0	0
0	10	20	20	50	20	20	10	0	0
80	0	10	10	20	10	10	0	50	0
100	0	0	0	10	0	0	10	100	10
50	0	0	0	0	0	0	0	0	50

100	0	0	0	10	0	0	20	0	0
0	0	10	10	20	10	10	40	20	0
0	100	20	20	20	20	20	50	90	20
0	10	20	50	70	50	40	10	50	0
10	20	20	70	100	80	20	20	10	0
0	10	20	50	70	50	20	10	0	0
0	10	20	20	50	20	20	10	0	0
80	0	10	10	20	10	10	0	50	0
100	0	0	0	10	0	0	10	100	10
50	0	0	0	0	0	0	0	0	50

100	0	0	0	10	0	0	20	0	0
0	0	10	10	20	10	10	40	20	0
0	100	20	20	20	20	20	50	90	20
0	10	20	50	70	50	40	10	50	0
10	20	20	70	100	80	20	20	10	0
0	10	20	50	70	50	20	10	0	0
0	10	20	20	50	20	20	10	0	0
80	0	10	10	20	10	10	0	50	0
100	0	0	0	10	0	0	10	100	10
50	0	0	0	0	0	0	0	0	50