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<title>NeL: NL3D::CLandscape::CBezierPatchZ struct Reference</title>
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<h1>NL3D::CLandscape::CBezierPatchZ Struct Reference</h1><hr><a name="_details"></a><h2>Detailed Description</h2>
A Bezier patch of One value only. NB: unlike <a class="el" href="a02258.html">CBezierPatch</a>, layout is inverted on Y. (NB: same formulas...)
<p>
<p>
Definition at line <a class="el" href="a05863.html#l00824">824</a> of file <a class="el" href="a05863.html">landscape.h</a>.<table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>float </td><td class="memItemRight" valign=bottom><a class="el" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZa0">eval</a> (float <a class="el" href="a04223.html#a626">s</a>, float <a class="el" href="a04223.html#a627">t</a>) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Evaluate. <a href="#NL3D_1_1CLandscape_1_1CBezierPatchZa0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZa1">makeInteriors</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">make default Interiors, according to Vertices and Tangents. <a href="#NL3D_1_1CLandscape_1_1CBezierPatchZa1"></a><br><br></td></tr>
<tr><td colspan=2><br><h2>Data Fields</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>float </td><td class="memItemRight" valign=bottom><a class="el" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a> [4]</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The interiors, ia,ib,ic,id. NB: interiors are points, not vectors. <a href="#NL3D_1_1CLandscape_1_1CBezierPatchZo0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>float </td><td class="memItemRight" valign=bottom><a class="el" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a> [8]</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The tangents ab, ba, bc, cb, cd, dc, da, ad. NB: tangents are points, not vectors. <a href="#NL3D_1_1CLandscape_1_1CBezierPatchZo1"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>float </td><td class="memItemRight" valign=bottom><a class="el" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo2">Vertices</a> [4]</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The vertices a,b,c,d of the quad patch. <a href="#NL3D_1_1CLandscape_1_1CBezierPatchZo2"></a><br><br></td></tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="NL3D_1_1CLandscape_1_1CBezierPatchZa0" doxytag="NL3D::CLandscape::CBezierPatchZ::eval" ></a><p>
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<td class="md" nowrap valign="top"> float NL3D::CLandscape::CBezierPatchZ::eval </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">float </td>
<td class="mdname" nowrap> <em>s</em>, </td>
</tr>
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<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>float </td>
<td class="mdname" nowrap> <em>t</em></td>
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<td></td>
<td class="md">) </td>
<td class="md" colspan="2"> const</td>
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</td>
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<td>
</td>
<td>
<p>
Evaluate.
<p>
<p>
Definition at line <a class="el" href="a05862.html#l02743">2743</a> of file <a class="el" href="a05862.html">landscape.cpp</a>.
<p>
Referenced by <a class="el" href="a05862.html#l02698">NL3D::CLandscape::getHeightFieldDeltaZ()</a>.
<p>
<div class="fragment"><pre>02744 {
02745 <span class="keywordtype">float</span> p;
02746
02747 <span class="keywordtype">float</span> ps2 = ps * ps;
02748 <span class="keywordtype">float</span> ps1 = 1.0f - ps;
02749 <span class="keywordtype">float</span> ps12 = ps1 * ps1;
02750 <span class="keywordtype">float</span> s0 = ps12 * ps1;
02751 <span class="keywordtype">float</span> s1 = 3.0f * ps * ps12;
02752 <span class="keywordtype">float</span> s2 = 3.0f * ps2 * ps1;
02753 <span class="keywordtype">float</span> s3 = ps2 * ps;
02754 <span class="keywordtype">float</span> pt2 = pt * pt;
02755 <span class="keywordtype">float</span> pt1 = 1.0f - pt;
02756 <span class="keywordtype">float</span> pt12 = pt1 * pt1;
02757 <span class="keywordtype">float</span> t0 = pt12 * pt1;
02758 <span class="keywordtype">float</span> t1 = 3.0f * pt * pt12;
02759 <span class="keywordtype">float</span> t2 = 3.0f * pt2 * pt1;
02760 <span class="keywordtype">float</span> t3 = pt2 * pt;
02761
02762 p = <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo2">Vertices</a>[0] * s0 * t0 +
02763 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[7] * s1 * t0 +
02764 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[6] * s2 * t0 +
02765 Vertices[3] * s3 * t0;
02766 p+= <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[0] * s0 * t1 +
02767 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a>[0]* s1 * t1 +
02768 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a>[3]* s2 * t1 +
02769 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[5] * s3 * t1;
02770 p+= <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[1] * s0 * t2 +
02771 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a>[1]* s1 * t2 +
02772 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a>[2]* s2 * t2 +
02773 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[4] * s3 * t2;
02774 p+= Vertices[1] * s0 * t3 +
02775 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[2] * s1 * t3 +
02776 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[3] * s2 * t3 +
02777 Vertices[2] * s3 * t3;
02778
02779 <span class="keywordflow">return</span> p;
02780 }
</pre></div> </td>
</tr>
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<a class="anchor" name="NL3D_1_1CLandscape_1_1CBezierPatchZa1" doxytag="NL3D::CLandscape::CBezierPatchZ::makeInteriors" ></a><p>
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<td class="md" nowrap valign="top"> void NL3D::CLandscape::CBezierPatchZ::makeInteriors </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
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</td>
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<td>
</td>
<td>
<p>
make default Interiors, according to Vertices and Tangents.
<p>
<p>
Definition at line <a class="el" href="a05862.html#l02731">2731</a> of file <a class="el" href="a05862.html">landscape.cpp</a>.
<p>
Referenced by <a class="el" href="a05862.html#l02784">NL3D::CLandscape::setHeightField()</a>.
<p>
<div class="fragment"><pre>02732 {
02733 <span class="keywordtype">float</span> &a = <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo2">Vertices</a>[0];
02734 <span class="keywordtype">float</span> &b = Vertices[1];
02735 <span class="keywordtype">float</span> &c = Vertices[2];
02736 <span class="keywordtype">float</span> &d = Vertices[3];
02737 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a>[0] = <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">Tangents</a>[7] + Tangents[0] - a;
02738 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a>[1] = Tangents[1] + Tangents[2] - b;
02739 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a>[2] = Tangents[3] + Tangents[4] - c;
02740 <a class="code" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">Interiors</a>[3] = Tangents[5] + Tangents[6] - d;
02741 }
</pre></div> </td>
</tr>
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<hr><h2>Field Documentation</h2>
<a class="anchor" name="NL3D_1_1CLandscape_1_1CBezierPatchZo0" doxytag="NL3D::CLandscape::CBezierPatchZ::Interiors" ></a><p>
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<td class="md" nowrap valign="top"> float <a class="el" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo0">NL3D::CLandscape::CBezierPatchZ::Interiors</a>[4]
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</td>
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<td>
</td>
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<p>
The interiors, ia,ib,ic,id. NB: interiors are points, not vectors.
<p>
<p>
Definition at line <a class="el" href="a05863.html#l00831">831</a> of file <a class="el" href="a05863.html">landscape.h</a>. </td>
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<a class="anchor" name="NL3D_1_1CLandscape_1_1CBezierPatchZo1" doxytag="NL3D::CLandscape::CBezierPatchZ::Tangents" ></a><p>
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<td class="md" nowrap valign="top"> float <a class="el" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo1">NL3D::CLandscape::CBezierPatchZ::Tangents</a>[8]
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</td>
<td>
<p>
The tangents ab, ba, bc, cb, cd, dc, da, ad. NB: tangents are points, not vectors.
<p>
<p>
Definition at line <a class="el" href="a05863.html#l00829">829</a> of file <a class="el" href="a05863.html">landscape.h</a>.
<p>
Referenced by <a class="el" href="a05862.html#l02784">NL3D::CLandscape::setHeightField()</a>. </td>
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<a class="anchor" name="NL3D_1_1CLandscape_1_1CBezierPatchZo2" doxytag="NL3D::CLandscape::CBezierPatchZ::Vertices" ></a><p>
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<td class="md" nowrap valign="top"> float <a class="el" href="a02703.html#NL3D_1_1CLandscape_1_1CBezierPatchZo2">NL3D::CLandscape::CBezierPatchZ::Vertices</a>[4]
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<p>
The vertices a,b,c,d of the quad patch.
<p>
<p>
Definition at line <a class="el" href="a05863.html#l00827">827</a> of file <a class="el" href="a05863.html">landscape.h</a>.
<p>
Referenced by <a class="el" href="a05862.html#l02784">NL3D::CLandscape::setHeightField()</a>. </td>
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<hr>The documentation for this struct was generated from the following files:<ul>
<li><a class="el" href="a05863.html">landscape.h</a><li><a class="el" href="a05862.html">landscape.cpp</a></ul>
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