📄 tunnel2.html
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<p><font size="3">First, decide the <b>applet size</b>
and the <b>resolution</b>, which enlarges the
internally calculated image and works as a zooming
factor. Set it at 1, if you want the best result.</font></p>
<p><font size="3">Second, set an image for texture
mapping of the tunnel surface.</font></p>
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<p><font size="3">Then you decide if textscroll
function is enabled by checking "<b>Enable
textscroll</b>" box.</font> </p>
<p><font size="3">You can also check "<b>Interactive
mode</b>" box, if you would like the light
source controlled by the mouse pointer. </font></p>
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<p><font size="3">Now you set a camera position
at "<b>Observer</b>"(x, y, z).</font></p>
<p><font size="3">Light is defined by the
"<b>Max</b>" and "<b>Min</b>"
intensity and the descending rate "<b>Dec.</b>".
</font></p>
<p><font size="3">Two more options concerning
light effect. The first one is the <b>shading
enabler</b>. With this parameter enabled,
the vanishing point and its surrounding
area are darkened, and produce realistic
looking of a tunnel.</font></p>
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<td colspan="2" height="2"><font size="3">The second
option is "<b>Reverse light</b>". This
inverts the shading. So, if you don't enable shading
effect, this parameter changes nothing.</font></td>
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<p><font size="3">Next, you set the "<b>Radius</b>"
of the tunnel. This in fact changes the
size of the vanishing area, regardless your
choice of tunnels is cylindrical or parallel.</font></p>
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<p><font size="3">With "<b>Square</b>"
parameter checked, the tunnel becomes parallel,
whereas the default tunnel is cylindrical.</font></p>
<p><font size="3">You can control <b>rotation
speed</b> and <b>advancing speed</b> too.</font></p>
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<td width="63%">Finally, bends controls. These
values have no effect if your choice of tunnel
is parallel one. Set the number of bends,
minimum and maximum size of bends and bends
size increment at "<b>Num</b>",
"<b>Size min.</b>", "<b>Size
max.</b>" and "<b>Size inc.</b>"
respectively. </td>
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<td width="100%" colspan="2">The bends increment
value together with "<b>Offset</b>"
and "<b>Offset incremen</b>t" values
control the movement of the tunnel. You can
produce breathing effect by proper setting.</td>
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<p><font size="3">We have only discussed about the tunnel
2 specific parameters. For generic parameters, please
read <a href="wizard.html">wizard</a> section.</font></p>
<p><font size="3">Proceed to<a href="wizard.html#4"> the
textscroll menu</a> if you have checked the textscroll
box; otherwise go to <a href="wizard.html#5">the expert
menu</a>.</font></p>
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