Knob Class for Web-Based 3D Experiment - Interactive Web-Based Virtual Reality with Java 3D - page 352

coordinate.set(radius, 0.0f, frontZ);
outerknobFace.setCoordinate(0, coordinate);
outerknobFace.setNormal(0, outNormal);

coordinate.set(radius, 0.0f, rearZ);
outerknobFace.setCoordinate(1, coordinate);
outerknobFace.setNormal(1, outNormal);

for(int count = 0; count < segmentCount; count++)
{
int index = 2 + count * 2;
tempAngle = segmentAngle * (double)(count + 1);
xDirection = (float)Math.cos(tempAngle);
yDirection = (float)Math.sin(tempAngle);
xKnob = radius * xDirection;
yKnob = radius * yDirection;
outNormal.set(xDirection, yDirection, 0.0f);

coordinate.set(xKnob, yKnob, frontZ);

outerknobFace.setCoordinate(index, coordinate);

outerknobFace.setNormal(index, outNormal);

coordinate.set(xKnob, yKnob, rearZ);

outerknobFace.setCoordinate(index + 1, coordinate);

outerknobFace.setNormal(index + 1, outNormal);

}

newShape = new Shape3D(outerknobFace, look);

PickTool.setCapabilities(newShape, PickTool.INTERSECT_FULL);

this.addChild(newShape);

Appearance dotlook = new Appearance();

Color3f black = new Color3f(0.0f, 0.0f, 0.0f);

Color3f white = new Color3f(1.0f, 1.0f, 1.0f);

Color3f objColor = new Color3f(1.0f, 0.0f, 0.0f);

dotlook.setMaterial(new Material(objColor, black, objColor, white, 100.0f));

Point3f[] verts =

{

// front face

new Point3f(1.0f*radius, -0.06f*radius, 0.52f*length),

new Point3f(1.0f*radius, 0.06f*radius, 0.52f*length),

new Point3f(0.92f*radius, 0.06f*radius, 0.52f*length),

new Point3f(0.92f*radius, -0.06f*radius, 0.52f*length),

// right face

new Point3f(1.0f*radius, -0.06f*radius, -0.52f*length),

new Point3f(1.0f*radius, 0.06f*radius, -0.52f*length),

new Point3f(1.0f*radius, 0.06f*radius, 0.52f*length),

new Point3f(1.0f*radius, -0.06f*radius, 0.52f*length),

// top face

new Point3f(1.0f*radius, 0.06f*radius, 0.52f*length),

new Point3f(1.0f*radius, 0.06f*radius, -0.52f*length),

new Point3f(0.92f*radius, 0.06f*radius, -0.52f*length),