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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+// MARKER(update_precomp.py): autogen include statement, do not remove
+#include "precompiled_basegfx.hxx"
+
+#include "testtools.hxx"
+
+#include <basegfx/point/b2dpoint.hxx>
+#include <basegfx/vector/b2dvector.hxx>
+#include <basegfx/range/b2drange.hxx>
+#include <basegfx/curve/b2dcubicbezier.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+
+#include <algorithm>
+
+
+namespace basegfx
+{
+ namespace testtools
+ {
+ Plotter::Plotter( ::std::ostream& rOutputStream ) :
+ mrOutputStream(rOutputStream),
+ maPoints(),
+ mbFirstElement( true )
+ {
+ // output gnuplot setup. We switch gnuplot to parametric
+ // mode, therefore every plot has at least _two_
+ // functions: one for the x and one for the y value, both
+ // depending on t.
+ mrOutputStream << "#!/usr/bin/gnuplot -persist" << ::std::endl
+ << "#" << ::std::endl
+ << "# automatically generated by basegfx::testtools::Plotter, don't change!" << ::std::endl
+ << "#" << ::std::endl
+ << "set parametric" << ::std::endl
+ // This function plots a cubic bezier curve. P,q,r,s
+ // are the control point elements of the corresponding
+ // output coordinate component (i.e. x components for
+ // the x plot, and y components for the y plot)
+ << "cubicBezier(p,q,r,s,t) = p*(1-t)**3+q*3*(1-t)**2*t+r*3*(1-t)*t**2+s*t**3" << ::std::endl
+
+ // This function plots the derivative of a cubic
+ // bezier curve. P,q,r,s are the control point
+ // components of the _original_ curve
+ << "cubicBezDerivative(p,q,r,s,t) = 3*(q-p)*(1-t)**2+6*(r-q)*(1-t)*t+3*(s-r)*t**2" << ::std::endl
+
+ // Plot a line's x component of a line in implicit
+ // form ax + by + c = 0
+ << "implicitLineX(a,b,c,t) = a*-c + t*-b" << ::std::endl
+
+ // Plot a line's y component of a line in implicit
+ // form ax + by + c = 0
+ << "implicitLineY(a,b,c,t) = b*-c + t*a" << ::std::endl
+
+ // Plot a line's component of a line between a and b
+ // (where a and b should be the corresponding
+ // components of the line's start and end point,
+ // respectively)
+ << "line(a,b,t) = a*(1-t) + b*t" << ::std::endl << ::std::endl
+ << "# end of setup" << ::std::endl << ::std::endl
+
+ // Start the actual plot line
+ << "plot [t=0:1] ";
+ }
+
+ namespace
+ {
+ class PointWriter
+ {
+ public:
+ PointWriter( ::std::ostream& rOutputStream ) :
+ mrOutputStream( rOutputStream )
+ {
+ }
+
+ void operator()( const B2DPoint& rPoint ) const
+ {
+ mrOutputStream << rPoint.getX() << "\t" << rPoint.getY() << ::std::endl;
+ mrOutputStream << "e" << ::std::endl;
+ }
+
+ private:
+ ::std::ostream& mrOutputStream;
+ };
+ }
+
+ Plotter::~Plotter()
+ {
+ // End the plot line
+ mrOutputStream << ::std::endl;
+
+ // write stored data points. Cannot write before, since
+ // this is an inline dataset, which must be after the plot <...>
+ // line
+ ::std::for_each( maPoints.begin(), maPoints.end(), PointWriter(mrOutputStream) );
+ }
+
+ void Plotter::plot( const B2DPolygon& rPoly )
+ {
+ const sal_uInt32 pointCount( rPoly.count() );
+
+ if( pointCount < 1 )
+ return;
+
+ if( pointCount == 1 )
+ {
+ plot( rPoly.getB2DPoint(0) );
+ return;
+ }
+
+ sal_uInt32 i;
+ for( i=0; i<pointCount-1; ++i )
+ {
+ if(rPoly.isNextControlPointUsed(i) || rPoly.isPrevControlPointUsed(i + 1))
+ {
+ const B2DCubicBezier aBezierPlot(
+ rPoly.getB2DPoint(i), rPoly.getNextControlPoint(i),
+ rPoly.getPrevControlPoint(i + 1), rPoly.getB2DPoint(i + 1));
+
+ plot(aBezierPlot);
+ }
+ else
+ {
+ plot( rPoly.getB2DPoint(i), rPoly.getB2DPoint(i+1) );
+ }
+ }
+ }
+
+ void Plotter::plot( const B2DPolyPolygon& rPolyPoly )
+ {
+ const sal_uInt32 nPolyCount( rPolyPoly.count() );
+
+ sal_uInt32 i;
+ for( i=0; i<nPolyCount; ++i )
+ {
+ plot( rPolyPoly.getB2DPolygon(i) );
+ }
+ }
+
+ void Plotter::plot( const B2DPoint& rPoint )
+ {
+ maPoints.push_back( rPoint );
+ writeSeparator();
+ mrOutputStream << "'-' using ($1):($2) title \"Point " << maPoints.size() << "\" with points";
+ }
+
+ void Plotter::plot( const B2DRange& rRect )
+ {
+ // TODO: do that also as a data file plot. maPoints must
+ // then become polymorph, but WTF.
+
+ // decompose into four lines
+ plot( B2DPoint(rRect.getMinX(),
+ rRect.getMinY()),
+ B2DPoint(rRect.getMaxX(),
+ rRect.getMinY()) );
+ plot( B2DPoint(rRect.getMaxX(),
+ rRect.getMinY()),
+ B2DPoint(rRect.getMaxX(),
+ rRect.getMaxY()) );
+ plot( B2DPoint(rRect.getMaxX(),
+ rRect.getMaxY()),
+ B2DPoint(rRect.getMinX(),
+ rRect.getMaxY()) );
+ plot( B2DPoint(rRect.getMinX(),
+ rRect.getMaxY()),
+ B2DPoint(rRect.getMinX(),
+ rRect.getMinY()) );
+ }
+
+ void Plotter::plot( const B2DPoint& rStartPoint, const B2DPoint& rEndPoint )
+ {
+ writeSeparator();
+ mrOutputStream << "line(" << rStartPoint.getX()
+ << "," << rEndPoint.getX()
+ << ",t), "
+ << "line(" << rStartPoint.getY()
+ << "," << rEndPoint.getY()
+ << ",t)";
+ }
+
+ void Plotter::plot( const B2DCubicBezier& rCurve )
+ {
+ writeSeparator();
+ mrOutputStream << "cubicBezier(" << rCurve.getStartPoint().getX()
+ << "," << rCurve.getControlPointA().getX()
+ << "," << rCurve.getControlPointB().getX()
+ << "," << rCurve.getEndPoint().getX()
+ << ",t), "
+ << "cubicBezier(" << rCurve.getStartPoint().getY()
+ << "," << rCurve.getControlPointA().getY()
+ << "," << rCurve.getControlPointB().getY()
+ << "," << rCurve.getEndPoint().getY()
+ << ",t)";
+ }
+
+ void Plotter::writeSeparator()
+ {
+ if( mbFirstElement )
+ {
+ mbFirstElement = false;
+ }
+ else
+ {
+ mrOutputStream << ", ";
+ }
+ }
+
+ }
+}