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<a class="el" href="dir_000000.html">include</a> / <a class="el" href="dir_000001.html">skia</a></div>
<h1>SkCamera.h</h1><div class="fragment"><pre class="fragment">00001 <span class="preprocessor">#ifndef SkCamera_DEFINED</span>
00002 <span class="preprocessor"></span><span class="preprocessor">#define SkCamera_DEFINED</span>
00003 <span class="preprocessor"></span>
00004 <span class="preprocessor">#include "SkMatrix.h"</span>
00005 <span class="preprocessor">#include "Sk64.h"</span>
00006
00007 <span class="preprocessor">#ifdef SK_SCALAR_IS_FIXED</span>
00008 <span class="preprocessor"></span> <span class="keyword">typedef</span> SkFract SkUnitScalar;
00009 <span class="preprocessor"> #define SK_UnitScalar1 SK_Fract1</span>
00010 <span class="preprocessor"></span><span class="preprocessor"> #define SkUnitScalarMul(a, b) SkFractMul(a, b)</span>
00011 <span class="preprocessor"></span><span class="preprocessor"> #define SkUnitScalarDiv(a, b) SkFractDiv(a, b)</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#else</span>
00013 <span class="preprocessor"></span> <span class="keyword">typedef</span> <span class="keywordtype">float</span> SkUnitScalar;
00014 <span class="preprocessor"> #define SK_UnitScalar1 SK_Scalar1</span>
00015 <span class="preprocessor"></span><span class="preprocessor"> #define SkUnitScalarMul(a, b) SkScalarMul(a, b)</span>
00016 <span class="preprocessor"></span><span class="preprocessor"> #define SkUnitScalarDiv(a, b) SkScalarDiv(a, b)</span>
00017 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00018 <span class="preprocessor"></span>
00019 <span class="comment">// Taken from Rob Johnson's most excellent QuickDraw GX library</span>
00020
00021 <span class="keyword">struct </span>SkUnit3D {
00022 SkUnitScalar fX, fY, fZ;
00023
00024 <span class="keywordtype">void</span> set(SkUnitScalar x, SkUnitScalar y, SkUnitScalar z)
00025 {
00026 fX = x; fY = y; fZ = z;
00027 }
00028 <span class="keyword">static</span> SkUnitScalar Dot(<span class="keyword">const</span> SkUnit3D&, <span class="keyword">const</span> SkUnit3D&);
00029 <span class="keyword">static</span> <span class="keywordtype">void</span> Cross(<span class="keyword">const</span> SkUnit3D&, <span class="keyword">const</span> SkUnit3D&, SkUnit3D* cross);
00030 };
00031
00032 <span class="keyword">struct </span>SkPoint3D {
00033 SkScalar fX, fY, fZ;
00034
00035 <span class="keywordtype">void</span> set(SkScalar x, SkScalar y, SkScalar z)
00036 {
00037 fX = x; fY = y; fZ = z;
00038 }
00039 SkScalar normalize(SkUnit3D*) <span class="keyword">const</span>;
00040 };
00041
00042 <span class="keyword">class </span>SkPatch3D {
00043 <span class="keyword">public</span>:
00044 SkPatch3D();
00045
00046 <span class="keywordtype">void</span> reset();
00047 <span class="keywordtype">void</span> rotate(SkScalar radX, SkScalar radY, SkScalar radZ);
00048 <span class="keywordtype">void</span> rotateDegrees(SkScalar degX, SkScalar degY, SkScalar degZ)
00049 {
00050 this->rotate(SkDegreesToRadians(degX),
00051 SkDegreesToRadians(degY),
00052 SkDegreesToRadians(degZ));
00053 }
00054
00055 <span class="comment">// dot a unit vector with the patch's normal</span>
00056 SkScalar dotWith(SkScalar dx, SkScalar dy, SkScalar dz) <span class="keyword">const</span>;
00057
00058 SkPoint3D fU, fV, fOrigin;
00059 <span class="keyword">private</span>:
00060 <span class="keyword">friend</span> <span class="keyword">class </span>SkCamera3D;
00061 };
00062
00063 <span class="keyword">class </span>SkCamera3D {
00064 <span class="keyword">public</span>:
00065 SkCamera3D();
00066
00067 <span class="keywordtype">void</span> update();
00068 <span class="keywordtype">void</span> computeMatrix(<span class="keyword">const</span> SkPatch3D&, SkMatrix* matrix) <span class="keyword">const</span>;
00069
00070 SkPoint3D fLocation;
00071 SkPoint3D fAxis;
00072 SkPoint3D fZenith;
00073 SkPoint3D fObserver;
00074
00075 <span class="keyword">private</span>:
00076 SkMatrix fOrientation;
00077 };
00078
00079 <span class="preprocessor">#endif</span>
00080 <span class="preprocessor"></span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Tue May 9 14:35:23 2006 for SGL by
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