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+/*************************************************************************
+ *
+ * $RCSfile: dxfvec.hxx,v $
+ *
+ * $Revision: 1.1.1.1 $
+ *
+ * last change: $Author: hr $ $Date: 2000-09-18 16:30:15 $
+ *
+ * The Contents of this file are made available subject to the terms of
+ * either of the following licenses
+ *
+ * - GNU Lesser General Public License Version 2.1
+ * - Sun Industry Standards Source License Version 1.1
+ *
+ * Sun Microsystems Inc., October, 2000
+ *
+ * GNU Lesser General Public License Version 2.1
+ * =============================================
+ * Copyright 2000 by Sun Microsystems, Inc.
+ * 901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ *
+ * This library 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 for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ * Sun Industry Standards Source License Version 1.1
+ * =================================================
+ * The contents of this file are subject to the Sun Industry Standards
+ * Source License Version 1.1 (the "License"); You may not use this file
+ * except in compliance with the License. You may obtain a copy of the
+ * License at http://www.openoffice.org/license.html.
+ *
+ * Software provided under this License is provided on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ * See the License for the specific provisions governing your rights and
+ * obligations concerning the Software.
+ *
+ * The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ * Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ * All Rights Reserved.
+ *
+ * Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+#ifndef _DXFVEC_HXX
+#define _DXFVEC_HXX
+
+#include <tools/gen.hxx>
+
+
+//------------------------------------------------------------------------------
+//---------------------------- DXFVector ---------------------------------------
+//------------------------------------------------------------------------------
+// Allgemeiner 3D-Vektor mit double
+
+class DXFVector {
+
+public:
+
+ double fx,fy,fz; // public ! - Warum nicht ?
+
+ inline DXFVector(double fX=0.0, double fY=0.0, double fZ=0.0);
+ inline DXFVector(const DXFVector & rV);
+
+ // Addition/Subtraktion:
+ DXFVector & operator += (const DXFVector & rV);
+ DXFVector operator + (const DXFVector & rV) const;
+ DXFVector & operator -= (const DXFVector & rV);
+ DXFVector operator - (const DXFVector & rV) const;
+
+ // Vektorprodukt
+ DXFVector operator * (const DXFVector & rV) const;
+
+ // Skalarprodukt:
+ double SProd(const DXFVector & rV) const;
+
+ // Multiplikation mit Skalar:
+ DXFVector & operator *= (double fs);
+ DXFVector operator * (double fs) const;
+
+ // Laenge:
+ double Abs() const;
+
+ // Vektor gleicher Richtung und der Laenge 1:
+ DXFVector Unit() const;
+
+ // Aequivalenz oder nicht:
+ BOOL operator == (const DXFVector & rV) const;
+ BOOL operator != (const DXFVector & rV) const;
+};
+
+//------------------------------------------------------------------------------
+//---------------------------- DXFTransform ------------------------------------
+//------------------------------------------------------------------------------
+// Eine Transformationsmatrix, spezialisiert auf unser Problem
+
+class DXFTransform {
+
+public:
+
+ DXFTransform();
+ // Zielkoordinate = Quellkoordinate
+
+ DXFTransform(double fScaleX, double fScaleY, double fScaleZ,
+ const DXFVector & rShift);
+ // Zielkoordinate = Verschoben(Skaliert(Quellkoorinate))
+
+ DXFTransform(double fScaleX, double fScaleY, double fScaleZ,
+ double fRotAngle,
+ const DXFVector & rShift);
+ // Zielkoordinate = Verschoben(Gedreht(Skaliert(Quellkoorinate)))
+ // Drehung geshieht um die Z-Achse, fRotAngle in Grad.
+
+ DXFTransform(const DXFVector & rExtrusion);
+ // Transformation "ECS->WCS" per "Entity Extrusion Direction"
+ // und dem "Arbitrary Axis Algorithm"
+ // (Siehe DXF-Docu von AutoDesk)
+
+ DXFTransform(const DXFVector & rViewDir, const DXFVector & rViewTarget);
+ // Transformation Objektraum->Bildraum anhand von Richtung und
+ // Zielpunkt eines ViewPort.
+ // (siehe DXF-Docu von AutoDesk: VPORT)
+
+ DXFTransform(const DXFTransform & rT1, const DXFTransform & rT2);
+ // Zielkoordinate = rT2(rT1(Quellkoorinate))
+
+
+ void Transform(const DXFVector & rSrc, DXFVector & rTgt) const;
+ // Transformation DXFVector nach DXFVector
+
+ void Transform(const DXFVector & rSrc, Point & rTgt) const;
+ // Transformation DXFVector nach SvPoint
+
+ void TransDir(const DXFVector & rSrc, DXFVector & rTgt) const;
+ // Transformation eines relativen Vektors (also kein Verschiebung)
+
+ BOOL TransCircleToEllipse(double fRadius, double & rEx, double & rEy) const;
+ // Versucht, einen Kreis (in der XY-Ebene) zu transformieren, so dass eine
+ // ausgerichtete Ellipse entsteht. Wenn das nicht geht, weil Ellipse
+ // in belibieger Lage entstehen wuerde, wird FALSE geliefert.
+ // (Der Mittelpunkt wird hiermit nicht transformiert, nehme Transform(..))
+
+ ULONG TransLineWidth(double fW) const;
+ // Transformiert die Liniendicke (so gut es geht)
+
+ double CalcRotAngle() const;
+ // Ermittelt den Rotationswinkel um die Z-Achse (in Grad)
+
+ BOOL Mirror() const;
+ // Liefert TRUE, wenn die Matrix ein Linkssystem bildet
+
+private:
+ DXFVector aMX;
+ DXFVector aMY;
+ DXFVector aMZ;
+ DXFVector aMP;
+};
+
+//------------------------------------------------------------------------------
+//------------------------------- inlines --------------------------------------
+//------------------------------------------------------------------------------
+
+
+inline DXFVector::DXFVector(double fX, double fY, double fZ)
+{
+ fx=fX; fy=fY; fz=fZ;
+}
+
+
+inline DXFVector::DXFVector(const DXFVector & rV)
+{
+ fx=rV.fx; fy=rV.fy; fz=rV.fz;
+}
+
+
+inline DXFVector & DXFVector::operator += (const DXFVector & rV)
+{
+ fx+=rV.fx; fy+=rV.fy; fz+=rV.fz;
+ return *this;
+}
+
+
+inline DXFVector DXFVector::operator + (const DXFVector & rV) const
+{
+ return DXFVector(fx+rV.fx, fy+rV.fy, fz+rV.fz);
+}
+
+
+inline DXFVector & DXFVector::operator -= (const DXFVector & rV)
+{
+ fx-=rV.fx; fy-=rV.fy; fz-=rV.fz;
+ return *this;
+}
+
+
+inline DXFVector DXFVector::operator - (const DXFVector & rV) const
+{
+ return DXFVector(fx-rV.fx, fy-rV.fy, fz-rV.fz);
+}
+
+
+inline DXFVector DXFVector::operator * (const DXFVector & rV) const
+{
+ return DXFVector(
+ fy * rV.fz - fz * rV.fy,
+ fz * rV.fx - fx * rV.fz,
+ fx * rV.fy - fy * rV.fx
+ );
+}
+
+
+inline double DXFVector::SProd(const DXFVector & rV) const
+{
+ return fx*rV.fx + fy*rV.fy + fz*rV.fz;
+}
+
+
+inline DXFVector & DXFVector::operator *= (double fs)
+{
+ fx*=fs; fy*=fs; fz*=fs;
+ return *this;
+}
+
+
+inline DXFVector DXFVector::operator * (double fs) const
+{
+ return DXFVector(fx*fs,fy*fs,fz*fs);
+}
+
+
+inline BOOL DXFVector::operator == (const DXFVector & rV) const
+{
+ if (fx==rV.fx && fy==rV.fy && fz==rV.fz) return TRUE;
+ else return FALSE;
+}
+
+
+inline BOOL DXFVector::operator != (const DXFVector & rV) const
+{
+ if (fx!=rV.fx || fy!=rV.fy || fz!=rV.fz) return TRUE;
+ else return FALSE;
+}
+
+#endif
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