bump.html

ANFY特效

                        <p><font size="3">This applet gives an effect of a moving 
                          light source over a bumpy surface, that casts shadow 
                          onto a selected image. You can use two separate images 
                          for the screen and the bumpy filter respectively. Or, 
                          alternatively, use a single image for both purposes. 
                          The latter can reduce the necessary download file size 
                          quite effectively, although good use of two separate 
                          images can create a stunning effect. </font></p>
                        <p><font size="3">[For more <a href="../Applet/bump/anfybump.txt">technical 
                          information</a> about the available parameters, click 
                          <a href="../Applet/bump/anfybump.txt">here</a>.]</font></p>
                        <hr width="90%">
                        <p><font size="3">Most parameters are self-explanatory 
                          and you can always see brief description of each parameter 
                          by moving the mouse pointer over <a href="wizard.html">the 
                          wizard</a>. </font></p>
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                            <td width="41%"><img src="images/bump3.gif" width="235" height="107"></td>
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                              <p>First, look at the left picture, there are two 
                                fields in which you specify image files.</p>
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                              <p><font size="3">The lower file entering space 
                                is enabled only when you check &quot;<b>Alternative 
                                bumpmap image</b>&quot; box. So, these upper and 
                                lower images represent the screen and the bumpy 
                                filter respectively. If you want to reduce the 
                                total download size, leave &quot;<b>Alternative 
                                bumpmap image</b>&quot; box unchecked. </font></p>
                              <p><font size="3">Next, decide the power of the 
                                bumpy filter by selecting a number from the &quot;<b>bump 
                                height</b>&quot; pull-down menu. A higher value 
                                results in a bumpier shadow cast over the screen.</font></p>
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                            <td width="42%"><img src="images/bump2.gif" width="148" height="131"></td>
                            <td width="58%"><font size="3">The applet &quot;<b>Width</b>&quot; 
                              and &quot;<b>Height</b>&quot; are automatically 
                              entered when you specify the screen image and a 
                              &quot;<b>Resolution</b>&quot; value. &quot;<b>Resolution</b>&quot; 
                              is a zooming parameter. </font></td>
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                              <p><font size="3">For instance, the value 2 gives 
                                twice as large an applet size as the screen size, 
                                while the value 1 changes nothing.</font></p>
                              <p><font size="3">Then you decide if textscroll 
                                function is enabled by checking &quot;<b>Enable 
                                textscroll</b>&quot; box.</font> You can also 
                                check &quot;<b>Interactive mode</b>&quot; box, 
                                if you would like the light source controlled 
                                by the mouse pointer.</p>
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                                  <td width="45%"><img src="images/bump4.gif" width="151" height="185"></td>
                                  <td width="55%"><font size="3">Secondly, you 
                                    define light source values. An integral value 
                                    <b>n</b> (&gt;1) for &quot;<b>Light size</b>&quot; 
                                    gives the size of the light source as <b>n</b>th 
                                    power of 2. For instance, If your choice of 
                                    the value is 9, the light source would be 
                                    2^9 * 2^9, i.e., 512 * 512 pixels in size.</font></td>
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                              <p><font size="3">Once you select a &quot;<b>Light 
                                power</b>&quot; value from 1 to 100, you need 
                                to set the contrast at &quot;<b>light Max</b>&quot; 
                                and &quot;<b>Light Min</b>&quot;. &quot;<b>Light 
                                Max</b>&quot; and &quot;<b>Light Min</b>&quot; 
                                take values ranging between 1 and 511. Choose 
                                values so that the difference of them is very 
                                high.</font></p>
                              <p><font size="3"><b>Note</b>: A value for &quot;<b>Light 
                                Max</b>&quot; must be higher than a value for 
                                &quot;<b>Light Min</b>&quot;.</font></p>
                              <p><font size="3">Finally, set the light source 
                                angle at &quot;<b>AngleX</b>&quot; and &quot;<b>AngleY</b>&quot;. 
                                These parameters represent the velocity of light 
                                source movement relative to respective XY co-ordinates. 
                                Higher values mean higher speed.</font></p>
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                        <p><font size="3">We have only discussed about the bump 
                          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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