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<h1 class="declaration">procedure sbcpln</h1>
<p>
This subroutine plots a diffusively-lit, semi-transparent, coloured plane through a unit cell. All (x,y,z) values are taken to be given in world coordinates. The z-component of the eye-poisition should be positive and that of all the lattice-vertices should be negative; the viewing-screen is fixed at z=0.
<br><br><b><font size=+2>Syntax</font></b><br>
sbcpln EYE,LATICE,IC1,IC2,LIGHT,SLNORM,APOINT,ICEDGE,ITRANS
<br><br><b><font size=+2>Arguments</font></b><br>
<table CELLSPACING=0 CELLPADDING=0 WIDTH="100%">
<tr VALIGN=TOP><td nowrap>ARGUMENT </td>
<td> TYPE I/O DIMENSION DESCRIPTION</td></tr>
<tr VALIGN=TOP><td nowrap>EYE: </td>
<td> R*4 I 3 (x,y,z) coordinate of eye-position.</td></tr>
<tr VALIGN=TOP><td nowrap>LATICE: </td>
<td> R*4 I 3 x 4 (x,y,z) coordinates of the origin</td></tr>
<tr VALIGN=TOP><td nowrap> </td>
<td> and the a, b & C lattice-vertices.</td></tr>
<tr VALIGN=TOP><td nowrap>IC1,IC2: </td>
<td> I*4 I - Lowest & highest colour-index to be</td></tr>
<tr VALIGN=TOP><td nowrap> </td>
<td> used for the shading.</td></tr>
<tr VALIGN=TOP><td nowrap>LIGHT: </td>
<td> R*4 I 3 (x,y,z) direction of flood-light.</td></tr>
<tr VALIGN=TOP><td nowrap>SLNORM: </td>
<td> R*4 I 3 (x,y,z) direction of normal to plane.</td></tr>
<tr VALIGN=TOP><td nowrap>APONIT: </td>
<td> R*4 I 3 (x,y,z) coordinate of a point within</td></tr>
<tr VALIGN=TOP><td nowrap> </td>
<td> the plane.</td></tr>
<tr VALIGN=TOP><td nowrap>ICEDGE: </td>
<td> I*4 I - If >=0, it's the colour-index for</td></tr>
<tr VALIGN=TOP><td nowrap> </td>
<td> the boundary of the plane.</td></tr>
<tr VALIGN=TOP><td nowrap>ITRANS: </td>
<td> I*4 I - Level of transparency:</td></tr>
<tr VALIGN=TOP><td nowrap> </td>
<td> 0 = 0%; 1 = 25%; 2 = 50%; 3 = 75%.</td></tr>
</table>
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Copyright © Thomas Ott ---- DPUSER - The Next Generation 3.3 (Rev. )
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