vcl/source/filter/idxf/dxfvec.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
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   9  * This file incorporates work covered by the following license notice:
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <sal/types.h>
  23 #include <vcl/lineinfo.hxx>
  24
  25 class Point;
  26
  27 class DXFLineInfo {
  28 public:
  29     LineStyle       eStyle;
  30     sal_Int32       nDashCount;
  31     double          fDashLen;
  32     sal_Int32       nDotCount;
  33     double          fDotLen;
  34     double          fDistance;
  35
  36     DXFLineInfo() :
  37         eStyle(LineStyle::Solid),
  38         nDashCount(0),
  39         fDashLen(0),
  40         nDotCount(0),
  41         fDotLen(0),
  42         fDistance(0) {}
  43 };
  44
  45
  46 //---------------------------- DXFVector ---------------------------------------
  47
  48 // common 3D vector with doubles
  49
  50 class DXFVector {
  51
  52 public:
  53
  54     double fx,fy,fz; // public ! - why not?
  55
  56     inline DXFVector(double fX=0.0, double fY=0.0, double fZ=0.0);
  57
  58     // summation/subtraktion:
  59     DXFVector & operator += (const DXFVector & rV);
  60     DXFVector   operator +  (const DXFVector & rV) const;
  61     DXFVector   operator -  (const DXFVector & rV) const;
  62
  63     // vector product
  64     DXFVector   operator *  (const DXFVector & rV) const;
  65
  66     // scalar product:
  67     double SProd(const DXFVector & rV) const;
  68
  69     // multiplication with scalar:
  70     DXFVector & operator *= (double fs);
  71     DXFVector   operator *  (double fs) const;
  72
  73     // length:
  74     double Abs() const;
  75
  76     // vector with same direction and a length of 1:
  77     DXFVector Unit() const;
  78
  79     // equivalence or net:
  80     bool operator == (const DXFVector & rV) const;
  81 };
  82
  83
  84 //---------------------------- DXFTransform ------------------------------------
  85
  86 // a transformation matrice specialized for our problem
  87
  88 class DXFTransform {
  89
  90 public:
  91
  92     DXFTransform();
  93         // destination coordinate = source coordinate
  94
  95     DXFTransform(double fScaleX, double fScaleY, double fScaleZ,
  96                  const DXFVector & rShift);
  97         // dest coordinate = translate(scale(source coordinate))
  98
  99     DXFTransform(double fScaleX, double fScaleY, double fScaleZ,
 100                  double fRotAngle,
 101                  const DXFVector & rShift);
 102         // dest coordinate = translate(rotate(scale(source coordinate)))
 103         // rotation around z-axis, fRotAngle in degrees.
 104
 105     DXFTransform(const DXFVector & rExtrusion);
 106         // Transformation "ECS->WCS" via "Entity Extrusion Direction"
 107         // ant the "Arbitrary Axis Algorithm"
 108         // (See DXF-Docu from AutoDesk)
 109
 110     DXFTransform(const DXFVector & rViewDir, const DXFVector & rViewTarget);
 111         // Transformation object space->picture space on the basis of direction
 112         // destination point of a viewport
 113         // (See DXF-Docu from AutoDesk: VPORT)
 114
 115     DXFTransform(const DXFTransform & rT1, const DXFTransform & rT2);
 116         // destination coordinate = rT2(rT1(source coordinate))
 117
 118
 119     void Transform(const DXFVector & rSrc, DXFVector & rTgt) const;
 120         // Transformation from DXFVector to DXFVector
 121
 122     void Transform(const DXFVector & rSrc, Point & rTgt) const;
 123         // Transformation from DXFVector to SvPoint
 124
 125     void TransDir(const DXFVector & rSrc, DXFVector & rTgt) const;
 126         // Transformation of a relative vector (so no translation)
 127
 128     bool TransCircleToEllipse(double fRadius, double & rEx, double & rEy) const;
 129         // Attempt to transform a circle (in xy plane) so that it results
 130         // in an aligned ellipse. If the does not work because an ellipse of
 131         // arbitrary position would be created, sal_False is returned.
 132         // (The center point will not be transformed, use Transform(..))
 133
 134     double CalcRotAngle() const;
 135         // Calculates the rotation angle around z-axis (in degrees)
 136
 137     bool Mirror() const;
 138         // Returns sal_True, if the matrice represents a left-handed coordinate system
 139
 140     LineInfo Transform(const DXFLineInfo& aDXFLineInfo) const;
 141         // Transform to LineInfo
 142
 143 private:
 144     DXFVector aMX;
 145     DXFVector aMY;
 146     DXFVector aMZ;
 147     DXFVector aMP;
 148 };
 149
 150
 151 //------------------------------- inlines --------------------------------------
 152
 153
 154 inline DXFVector::DXFVector(double fX, double fY, double fZ)
 155 {
 156     fx=fX; fy=fY; fz=fZ;
 157 }
 158
 159
 160 inline DXFVector & DXFVector::operator += (const DXFVector & rV)
 161 {
 162     fx+=rV.fx; fy+=rV.fy; fz+=rV.fz;
 163     return *this;
 164 }
 165
 166
 167 inline DXFVector DXFVector::operator + (const DXFVector & rV) const
 168 {
 169     return DXFVector(fx+rV.fx, fy+rV.fy, fz+rV.fz);
 170 }
 171
 172
 173 inline DXFVector DXFVector::operator - (const DXFVector & rV) const
 174 {
 175     return DXFVector(fx-rV.fx, fy-rV.fy, fz-rV.fz);
 176 }
 177
 178
 179 inline DXFVector DXFVector::operator *  (const DXFVector & rV) const
 180 {
 181     return DXFVector(
 182         fy * rV.fz - fz * rV.fy,
 183         fz * rV.fx - fx * rV.fz,
 184         fx * rV.fy - fy * rV.fx
 185     );
 186 }
 187
 188
 189 inline double DXFVector::SProd(const DXFVector & rV) const
 190 {
 191     return fx*rV.fx + fy*rV.fy + fz*rV.fz;
 192 }
 193
 194
 195 inline DXFVector & DXFVector::operator *= (double fs)
 196 {
 197     fx*=fs; fy*=fs; fz*=fs;
 198     return *this;
 199 }
 200
 201
 202 inline DXFVector DXFVector::operator * (double fs) const
 203 {
 204     return DXFVector(fx*fs,fy*fs,fz*fs);
 205 }
 206
 207
 208 inline bool DXFVector::operator == (const DXFVector & rV) const
 209 {
 210     if (fx==rV.fx && fy==rV.fy && fz==rV.fz) return true;
 211     else return false;
 212 }
 213
 214 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */