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<A NAME="subtract(quicktime.qd.QDPoint, quicktime.qd.QDPoint)"><!-- --></A><H3>
subtract</H3>
<PRE>
public static <A HREF="../../../quicktime/qd3d/math/Vector2D.html">Vector2D</A> <B>subtract</B>(<A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;p1,
                                <A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;p2)</PRE>
<DL>
<DD>Returns a two-dimensional vector that is the result of subtracting the point p2 from p1.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/QD3D/qd3dmathfunc.a.htm#pgfId=3278">QuickDraw3D::Q3Point2D_Subtract</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>p1</CODE> - A two-dimensional point<DD><CODE>p2</CODE> - A two-dimensional point<DT><B>Returns:</B><DD>a Vector2D object</DL>
</DD>
</DL>
<HR>

<A NAME="distance(quicktime.qd.QDPoint, quicktime.qd.QDPoint)"><!-- --></A><H3>
distance</H3>
<PRE>
public static float <B>distance</B>(<A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;p1,
                             <A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;p2)</PRE>
<DL>
<DD>Returns the absolute value of the distance between points p1 and p2.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/QD3D/qd3dmathfunc.b.htm#pgfId=3313">QuickDraw3D::Q3Point2D_Distance</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>p1</CODE> - A two-dimensional point<DD><CODE>p2</CODE> - A two-dimensional point<DT><B>Returns:</B><DD>the distance</DL>
</DD>
</DL>
<HR>

<A NAME="distanceSquared(quicktime.qd.QDPoint, quicktime.qd.QDPoint)"><!-- --></A><H3>
distanceSquared</H3>
<PRE>
public static float <B>distanceSquared</B>(<A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;p1,
                                    <A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;p2)</PRE>
<DL>
<DD>Returns the square value of the distance between points p1 and p2.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/QD3D/qd3dmathfunc.b.htm#pgfId=3351">QuickDraw3D::Q3Point2D_DistanceSquared</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>p1</CODE> - A two-dimensional point<DD><CODE>p2</CODE> - A two-dimensional point<DT><B>Returns:</B><DD>the distance</DL>
</DD>
</DL>
<HR>

<A NAME="rRatio(quicktime.qd.QDPoint, quicktime.qd.QDPoint, float, float)"><!-- --></A><H3>
rRatio</H3>
<PRE>
public static <A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A> <B>rRatio</B>(<A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;p1,
                             <A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;p2,
                             float&nbsp;r1,
                             float&nbsp;r2)</PRE>
<DL>
<DD>Returns the two-dimensional point that lies on the line segment between
 the points p1 and p2 and that is at a distance from the first point determined by
 the ratio r1/(r1 + r2).
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/QD3D/qd3dmathfunc.c.htm#pgfId=3396">QuickDraw3D::Q3Point2D_RRatio</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>p2</CODE> - A two-dimensional point.<DD><CODE>r1</CODE> - A floating-point number.<DD><CODE>r2</CODE> - A floating-point number.<DT><B>Returns:</B><DD>a QDPoint</DL>
</DD>
</DL>
<HR>

<A NAME="add(quicktime.qd.QDPoint, quicktime.qd3d.math.Vector2D)"><!-- --></A><H3>
add</H3>
<PRE>
public static <A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A> <B>add</B>(<A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;point2D,
                          <A HREF="../../../quicktime/qd3d/math/Vector2D.html">Vector2D</A>&nbsp;v)</PRE>
<DL>
<DD>Returns the result of adding a two-dimensional vector to a two-dimensional point.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/QD3D/qd3dmathfunc.d.htm#pgfId=3442">QuickDraw3D::Q3Point2D_Vector2D_Add</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>point2D</CODE> - A two-dimensional point.<DD><CODE>v</CODE> - a two-dimensional vector<DT><B>Returns:</B><DD>a point that is the result of the add.</DL>
</DD>
</DL>
<HR>

<A NAME="subtract(quicktime.qd.QDPoint, quicktime.qd3d.math.Vector2D)"><!-- --></A><H3>
subtract</H3>
<PRE>
public static <A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A> <B>subtract</B>(<A HREF="../../../quicktime/qd/QDPoint.html">QDPoint</A>&nbsp;point2D,
                               <A HREF="../../../quicktime/qd3d/math/Vector2D.html">Vector2D</A>&nbsp;v)</PRE>
<DL>
<DD>Returns the result of subtracting a two-dimensional vector from a two-dimensional point.
	 <BR><BR><b> <a href="http://developer.apple.com/techpubs/quicktime/qtdevdocs/QD3D/qd3dmathfunc.d.htm#pgfId=3468">QuickDraw3D::Q3Point2D_Vector2D_Subtract</a> </b><BR><BR>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>point2D</CODE> - A two-dimensional point.<DD><CODE>v</CODE> - a two-dimensional vector<DT><B>Returns:</B><DD>a point that is the result of the add.</DL>
</DD>
</DL>
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